JP2020005842A - Mounting tool - Google Patents

Abstract

To provide a mounting tool having a loosening prevention part for preventing fixation of members with each other by a screw from loosening.SOLUTION: A mounting tool comprises: a plurality of mounting parts 111 and 112 on which a washing machine 200 is placed; a connection part 120 that is disposed between the plurality of mounting parts and that connects the mounting parts with each other; a first member 130 and a second member 140 provided in the connection part; a nut 150 installed in the first member; a screw 160 that can be screwed in the nut and that fixes the first and second members by making a tip 163a in the insertion direction into the nut, butted against the second member 140; and a loosening prevention part that is formed on the tip side of the insertion direction of the screw rather than the nut and that projects inside of the nut so as to come into contact with the screw inserted into the nut. The loosening prevention part constitutes a part of the first member.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a mounting device for mounting a device that generates vibration.

  2. Description of the Related Art As a device for mounting a device that generates vibration such as a washing machine, a mounting device with a caster is known (for example, see Patent Document 1). The above-mentioned mounting device is provided with mounting tables arranged at four corners and side wall portions connecting adjacent mounting tables. Further, in the above-mentioned mounting device, the mounting table and the side wall are integrally formed, and the distance between the mounting tables cannot be changed. Therefore, devices that can be mounted on the mounting device are limited to devices of a specific size.

  On the other hand, Patent Literature 2 has a guide pipe and a column that can slide relative to the pipe, and shifts the position of the column relative to the pipe to reduce the size of the entire instrument. There is disclosed a device for conveying articles provided with an expansion / contraction mechanism capable of changing the distance. The pipe and the post are fixed to each other using screws when maintaining their relative positions.

JP-A-2003-245499 Actual Kaihei 7-9300

  For example, by incorporating the telescopic mechanism described in Patent Literature 2 into the mounting device described in Patent Literature 1, various sizes of devices can be mounted on the mounting device.

  However, when a device that generates vibration such as a washing machine is mounted on the mounting device, there is a possibility that a screw for fixing the pipe and the support column may be loosened or dropped due to the influence of the vibration of the washing machine. . As a result, there is a possibility that the column is displaced with respect to the pipe, and the telescopic mechanism is extended or contracted unintentionally. In addition, the same problem regarding the loosening of the screw may occur in any screw other than the expansion and contraction mechanism that fixes members provided in the mounting device.

  An object of the present invention is to provide a mounting device including a loosening prevention unit that prevents a member from being loosened by screws, in order to solve the above problem.

  The mounting device according to the present invention includes a plurality of mounting portions on which devices that generate vibration are mounted, and a connecting portion that is disposed between the plurality of mounting portions and connects the mounting portions to each other. A first member and a second member included in the connecting portion, a nut attached to the first member, and a screwable screw to the nut, and a distal end in an insertion direction to the nut is attached to the second member. A screw that fixes the first member and the second member by abutting, and is formed on the tip end side of the screw in the insertion direction of the screw with respect to the nut, so that the screw is in contact with the screw inserted into the nut. A looseness preventing portion protruding inward of the nut, wherein the loosening preventing portion is formed by a part of the first member.

  ADVANTAGE OF THE INVENTION According to this invention, the screw which fixes a 1st member and a 2nd member under the influence of the vibration generate | occur | produced by the loosening prevention part provided in the 1st member which is a component member of a mounting instrument loosens. Can be prevented.

It is a perspective view showing the state where a device was mounted on the mounting device concerning an embodiment. FIG. 2 is a plan view showing, on an enlarged scale, a part of the back side of the mounting device as viewed from the direction of arrow 2 </ b> A shown in FIG. 1. It is a perspective view showing a situation before screwing a 1st member and a 2nd member. FIG. 4 is a cross-sectional view taken along line 4A-4A shown in FIG. 3, showing a state before screwing. It is sectional drawing which shows the state after screwing. FIG. 5 is a plan view illustrating an example of the arrangement of a loosening prevention unit, as viewed from a direction of an arrow 6 </ b> A illustrated in FIG. 4. It is a top view which shows the example of arrangement | positioning of a loosening prevention part.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. In addition, the dimensional ratios in the drawings are exaggerated for convenience of description, and may be different from the actual ratios.

  FIG. 1 shows an example of a use state of the mounting device 100 according to the present embodiment. The mounting device 100 can be used, for example, for mounting a device (hereinafter simply referred to as “device”) 200 that generates vibration. The device 200 is, for example, a known drum-type home washing machine. However, the device 200 is not particularly limited as long as it can generate vibration in a state where the device 200 is mounted on the mounting device 100. The device 200 may be for home use or industrial use, and may be used for any purpose. Further, the frequency of vibration generated by the device 200 is not particularly limited.

  As shown in FIG. 1, the mounting device 100 is provided between a plurality of mounting portions 111, 112, 113, 114 on which the device 200 is mounted, and the mounting portions 111, 112, 113, 114. And a connecting portion 120 for connecting the mounting portions 111, 112, 113, 114 to each other.

  Each of the placement units 111, 112, 113, and 114 is arranged at four corners of the placement device 100 as shown in FIG. Adjacent mounting sections are connected via a connecting section 120. The device 200 is placed on each of the placement units 111, 112, 113, and 114, thereby being arranged above the placement device 100. Each of the mounting portions 111, 112, 113, and 114 has a flat upper surface capable of supporting the mounting device 100.

  As shown in FIGS. 1 and 3, the connecting portion 120 includes two first members 130 and one second member 140. In the present embodiment, since the connecting portions 120 included in the mounting device 100 have substantially the same configuration, in the following description, between the mounting portion 111 and the mounting portion 112 (see FIG. 1). The details of the arranged connecting portions 120 will be described, and the description of the other connecting portions 120 will be appropriately omitted.

  As shown in FIGS. 1 and 2, rollers 170 are attached to the bottom surfaces of the mounting portions 111, 112, 113, and 114. The mounting device 100 can also be used as a caster that can transport the device 200 mounted on the mounting device 100 by providing the roller 170.

  The first member 130 and the second member 140 constitute a slide mechanism that adjusts the distance between the mounting portions 111 and 112 by the first member 130 sliding relative to the second member 140. I have.

  As shown in FIG. 2, the first member 130 is provided with an insertion portion 131 into which the second member 140 is inserted. As shown in FIG. 3, the first member 130 slides (slids) with respect to the second member 140 as shown by an arrow aa ′ in a state where a part of the second member 140 is inserted into the insertion portion 131. Ver) is possible. When the first members 130 move in a direction of relatively approaching to each other, the distance between the placement unit 111 and the placement unit 112 (see FIG. 1) decreases. On the other hand, when the first members 130 move in a direction in which the first members 130 are relatively separated from each other, the distance between the placement unit 111 and the placement unit 112 increases. By adjusting the distance between the mounting portions 111 and 112 as described above, the distance can be changed to an appropriate distance according to the type and size of the device 200 mounted on the mounting device 100. it can.

  The first member 130 can be made of, for example, a known resin material. Further, the first member 130 can be formed of, for example, a resin molded product. For example, the later-described loosening prevention unit 135 can be integrally formed with the first member 130 by adding a shape to a part of the first member 130 in a forming process when the first member 130 is manufactured. The second member can be made of, for example, a metal material such as stainless steel.

  The shape and the like of the first member 130 and the second member 140 are not particularly limited as long as the first member 130 and the second member 140 are relatively movable.

  As shown in FIGS. 3, 4, and 5, the mounting device 100 has a nut 150 attached to the first member 130, and can be screwed to the nut 150, and a distal end portion in the insertion direction into the nut 150. A screw 160 that fixes the first member 130 and the second member 140 by abutting the second member 140 on the second member 140 is formed on the distal end side in the insertion direction of the screw 160 with respect to the nut 150. And a slack preventing portion 135 protruding toward the inside of the nut 150 so as to come into contact with the set screw 160.

  As shown in FIG. 3, the nut 150 is disposed on a mounting portion 133 provided on the back side of the first member 130 (the side opposite to the side on which the device 200 is disposed in the mounting device 100). The nut 150 is housed in the internal space 133a of the mounting portion 133, as shown in FIGS. The nut 150 is firmly fixed to the inner wall 133b of the mounting portion 133 so that the nut 150 does not fall off from the mounting portion 133. The nut 150 can be integrally attached to the first member 130 by, for example, outsert by press-fitting. However, the nut 150 may be attached to the first member 130 as long as it is attached to the first member 130. For example, the nut 150 may be integrally attached to the first member 130 by insert molding or the like.

  As the nut 150, a known metal nut having an internal thread portion 151 formed on the inner surface is used.

  As the screw 160, a known screw having a head 161 and a male screw portion 163 is used. Although the specific type of the screw 160 is not particularly limited, for example, a screw having a resin head that can be manually tightened, or a screw that can be tightened by a fastening tool such as a screwdriver can be used.

  The screw pitch of the nut 150 and the screw pitch of the screw 160 are not particularly limited.

  As shown in FIGS. 4 and 5, the loosening prevention unit 135 is configured by a part of the first member 130. As illustrated in FIG. 5, the loosening prevention unit 135 is disposed on one end side of the nut 150 (the end side in the insertion direction of the screw 160 positioned above FIGS. 4 and 5). (The center axis c1 side of the nut 150). Note that no thread groove or the like is formed in the loosening prevention portion 135.

  As shown in FIG. 6, a plurality of loosening prevention portions 135 can be arranged at predetermined intervals in the circumferential direction of the nut 150, for example. In the illustrated example, each of the slack preventing portions 135 is arranged so as to be within a range of a predetermined angle θ1 along the center axis c1 of the nut 150. The angle θ1 is, for example, 30 °. It is to be noted that an equal interval may be provided between each of the slack preventing portions 135 so that the frictional force generated between the loose preventing portions 135 and the screw 160 acts evenly along the circumferential direction of the screw 160. preferable.

  Further, as shown in FIG. 7, the loosening prevention unit 135 can be arranged, for example, such that the angle θ2 corresponding to the range in which the loosening prevention unit 135 is formed is 45 °. As the magnitude of the angle θ2 increases, the frictional force generated between the looseness prevention unit 135 and the screw 160 acts more on the screw 160, so that the occurrence of the loosening can be suitably prevented. However, when tightening the screw 160, it is necessary to apply a larger torque. Therefore, in the mounting device 100, the angle of θ1 shown in FIG. 6 and the angle of θ2 shown in FIG. 7 are taken into consideration in consideration of the magnitude of torque when tightening the screw 160 and the effect of preventing loosening by the loosening prevention unit 135. It can be selected as appropriate.

  In the examples shown in FIGS. 6 and 7, four looseness preventing portions 135 are formed in the circumferential direction, but the number of loosening preventing portions 135 provided on one first member 130 is not particularly limited. The angles θ1 and θ2 shown in FIGS. 6 and 7 are examples, and can be changed to any size. For example, the loosening prevention unit 135 may be arranged along the entire circumference of the nut 150 in the circumferential direction. Further, the length (projection amount) of the slack preventing portion 135 protruding toward the nut 150 and the specific shape in plan view are not particularly limited as long as the loosening of the screw 160 can be prevented (suppressed).

  As shown in FIG. 4, an insertion hole 136 for inserting the screw 160 is formed inside the loosening prevention portion 135. Further, the end 135a of the loosening prevention portion 135 disposed on the nut 150 side has a tapered shape in a cross section along the insertion direction of the screw 160 (cross section in FIGS. 4 and 5). More specifically, the end 135a of the loosening prevention portion 135 is chamfered so as to be inclined toward the central axis c1 of the nut 150. Although the end 135a is a straight line in a sectional view in FIG. 4, for example, the end 135a may have a curved shape (R-processed shape).

  Next, the operation of the loosening prevention unit 135 will be described.

  A user or the like using the mounting device 100 can expand and contract the connecting portion 120 by sliding the first member 130 relative to the second member 140 as described above. The user can reversibly adjust the distance between the adjacent mounting portions 111 and 112 (see FIG. 1) so as to increase or decrease by expanding and contracting the connecting portion 120. . The user tightens the screw 160 to the nut 150 in order to maintain (maintain) the distance between the adjacent mounting portions 111 and 112 after the connecting portion 120 is expanded and contracted (see FIG. 3). When the screw 160 is tightened to the nut 150, as shown in FIG. 5, the distal end portion 163a of the screw 160 abuts against the second member 140 inserted into the insertion portion 131 of the first member 130 (see FIG. 3). . In addition, since the end 135a of the loosening prevention unit 135 is formed in a tapered shape, the resistance applied to the screw 160 when the tip end 163a of the screw 160 reaches the loosening prevention unit 135 through the nut 150 is reduced. be able to. Therefore, the screw 160 can be smoothly moved from the nut 150 side to the loosening prevention unit 135 side.

  The screw 160 applies a fixing force to the second member 140. The loosening prevention portion 135 disposed closer to the distal end in the insertion direction of the screw 160 than the nut 150 contacts the outer peripheral surface near the distal end 163a of the screw 160 protruding toward the distal end of the nut 150. The looseness prevention unit 135 generates a frictional force with the screw 160 by coming into contact with the screw 160. For this reason, the loosening prevention unit 135 is arranged such that a device 200 that generates vibration, such as a washing machine, is disposed on the placing device 100, and the state in which the device 200 is operating and generating vibration occurs for a predetermined period. Even if the screw 160 continues, the screw 160 can be prevented from being loosened.

  Further, since the loosening prevention unit 135 is formed by a part of the first member 130, it is possible to suppress an increase in the number of components of the mounting device 100, to reduce costs and to suppress complexity of manufacturing operations. Can be achieved. In particular, when the first member 130 and the loosening prevention portion 135 are integrally molded with a molded product of a resin material, it is possible to effectively suppress an increase in manufacturing cost and a complicated manufacturing operation. Further, when the first member 130 and the loosening prevention portion 135 are formed of a resin molded product, when the screw 160 passes through the nut 150 and moves toward the second member 140, the shape follows the shape of the outer peripheral surface of the screw 160. The slack preventing portion 135 is deformed. This prevents friction between the outer peripheral surface of the screw 160 and the loosening prevention portion 135 while preventing the movement of the screw 160 in the state where the screw 160 and the loosening prevention portion 135 are in contact with each other. The force can be generated effectively.

  As described above, the mounting device 100 according to the present embodiment is provided between the plurality of mounting portions 111 and 112 on which the device 200 that generates vibration is mounted, and the plurality of mounting portions 111 and 112. A connecting portion 120 for connecting the mounting portions 111 and 112 to each other, a first member 130 and a second member 140 included in the connecting portion 120, a nut 150 attached to the first member 130, and a nut 150 can be screwed. A screw 160 for fixing the first member 130 and the second member 140 by abutting a tip portion 163a of the insertion direction to the nut 150 against the second member 140, and a tip side of the screw 160 in the insertion direction of the screw 160 relative to the nut 150. And a slack preventing portion 135 protruding toward the inside of the nut 150 so as to be in contact with the screw 160 inserted into the nut 150. It is constituted by a portion of the first member 130.

  In the mounting device 100 configured as described above, the first member 130 and the second member 140 are fixed under the influence of the vibration generated from the device 200 by the loosening prevention unit 135 provided on the first member 130. The loosening of the screw 160 can be prevented.

  In addition, a plurality of loosening prevention units 135 are arranged at intervals in the circumferential direction of the nut 150. Therefore, the mounting device 100 can more suitably prevent the screws 160 from being loosened due to the frictional force generated between the screws 160 and the plurality of loosening prevention portions 135.

  Further, an end 135a of the loosening prevention portion 135 arranged on the nut 150 side has a tapered shape in a cross section along the insertion direction of the screw 160. Therefore, the screw 160 can smoothly move from the nut 150 to the loosening prevention portion 135 side.

  Further, the first member 130 and the second member 140 have a sliding mechanism that adjusts the distance between the plurality of mounting portions 111 and 112 by the first member 130 sliding relative to the second member 140. Is configured. The screw 160 fixes the second member 140 to the first member 130, thereby keeping the distance between the plurality of mounting portions 111 and 112 constant. Therefore, the mounting device 100 can adjust the distance between the mounting portions 111 and 112, and can appropriately maintain the adjusted distance.

  As described above, the mounting device according to the present invention has been described through the embodiments. However, the present invention is not limited to only the contents described in the specification, and may be appropriately changed based on the description in the claims. Is possible.

  For example, the specific shape, size, and number of the mounting portion, the number of connecting portions (the first member and the second member), the connection form, the size, and the shape, and the types of the fixed first and second members The combination and the like are not limited to those described in the specification.

  In the description of the embodiment, the screw used for holding (maintaining) the length before and after the expansion and contraction of the connecting portion is exemplified. However, the screw is a mounting member on which a device that generates vibration is mounted. The specific use is not limited as long as it is used for the purpose of fixing the two members at the connecting portion of the tool.

100 mounting equipment,
111, 112, 113, 114 mounting part,
120 couplings,
130 first member,
131 insertion section,
133 mounting part,
135 loosening prevention part,
136 insertion hole,
140 second member,
150 nuts,
160 screws,
163a Screw tip,
200 Equipment that generates vibration.

Claims (4)

A plurality of mounting portions for mounting devices that generate vibration,
A connecting portion that is disposed between the plurality of mounting portions and connects the mounting portions to each other;
A first member and a second member included in the connection portion;
A nut attached to the first member;
A screw that can be screwed to the nut, and fixes the first member and the second member by abutting a tip of the nut in the insertion direction on the second member;
A loosening prevention portion formed at the tip end side of the screw in the insertion direction of the screw, and protruding toward the inside of the nut so as to come into contact with the screw inserted into the nut,
The mounting device, wherein the loosening prevention unit is configured by a part of the first member.   The mounting device according to claim 1, wherein a plurality of the loosening prevention portions are arranged at intervals in a circumferential direction of the nut.   The mounting device according to claim 1, wherein an end portion of the loosening prevention portion disposed on the nut side has a tapered shape in a cross section along a direction in which the screw is inserted. The first member and the second member constitute a slide mechanism that adjusts a distance between the plurality of mounting portions by the first member sliding relative to the second member,
The mounting device according to any one of claims 1 to 3, wherein the screw holds the distance constant by fixing the second member to the first member.