Movement prevention device

Abstract

To provide a movement preventing tool having a simple structure and easy to operate.SOLUTION: A movement prevention tool is inserted between furniture placed on a floor and the floor to prevent movement, includes a first member in contact with the floor and a second member in contact with a bottom surface of the furniture, and is configured such that a distance between opposing surfaces of the first member and the second member is variable.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a device for preventing movement of caster-equipped equipment such as equipment used in hospitals and copying machines in offices from unexpectedly moving due to an earthquake or the like. [Background technology]

[0002] Various devices have been proposed to prevent caster movement in order to prevent objects with casters from moving due to vibrations or shaking caused by earthquakes or unintended collisions with other devices or fixtures, or from causing bodily injury to people.

[0003] For example, Patent Document 1 discloses a caster with a stopper, in which a locking member engages with the teeth of the wheel rim to prevent the wheel from rotating. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-249001 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the caster with stopper disclosed in Patent Document 1 has a complex structure, such as using gears to prevent rotation, and there is a risk that the manufacturing costs will be high.

[0006] SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a fixture movement prevention device that is simple in structure and easy to operate. [Means for solving the problem]

[0007] The movement prevention device of the present invention is a movement prevention device that is inserted between a piece of furniture placed on a floor and the floor to prevent movement, and is characterized by comprising a first member that contacts the floor and a second member that contacts the bottom surface of the furniture, and is configured so that the distance between the opposing surfaces of the first member and the second member is variable.

[0008] It comprises a first member that contacts the floor and a second member that contacts the bottom surface of the fixture, and is configured so that the distance between the opposing surfaces of the first member and the second member can be changed, so that the first member and the second member can be pressed against the floor and the fixture, respectively, to prevent the fixture from moving.

[0009] The invention described in claim 2 is the movement prevention device described in claim 1, characterized in that a movement prevention case fixed to the first member prevents the second member from moving in the horizontal direction.

[0010] The movement prevention case fixed to the first member prevents the second member from moving horizontally, thereby improving the function of preventing the fixtures from moving.

[0011] The invention described in claim 3 is the movement prevention device described in claim 2, characterized in that the distance between the first member and the second member is adjusted by inserting an insertion member through an insertion port between the first member and the second member.

[0012] The distance between the first and second members is adjusted by inserting an insertion member through the insertion port between the first and second members, so by selecting the thickness dimension of the insertion member, the furniture can be effectively prevented from moving.

[0013] The invention described in claim 4 is a movement prevention device described in any one of claims 1 to 3, characterized in that the distance between the opposing surfaces of the first member and the second member at the insertion port is formed so as to gradually increase toward the front, or the distance between the opposing surfaces of the first member and the second member increases toward the back.

[0014] At the insertion port, the distance between the opposing surfaces of the first and second members is formed so that it gradually widens toward the front, or the distance between the opposing surfaces of the first and second members increases toward the back, making it easier to insert the insertion member or generating stress that moves it toward the back due to vertical pressure.

[0015] The invention described in claim 5 is a movement prevention device described in claim 3, characterized in that the thickness of the tip portion of the insertion member decreases toward the tip, or the thickness of the main body portion of the insertion member increases toward the tip.

[0016] The thickness of the tip portion of the insertion member decreases toward the tip, or the thickness of the main body portion of the insertion member increases toward the tip, making insertion easier or generating stress that moves inward due to vertical pressure.

[0017] The invention described in claim 6 is the movement prevention device described in claim 3, characterized in that the opposing surfaces of the first member and the second member are subjected to a lubricating treatment.

[0018] The opposing surfaces of the first and second members are lubricated, which makes it easy to insert the insertion member.

[0019] The invention described in claim 7 is the movement prevention device described in claim 3, characterized in that it includes a bag-shaped inserted member into which the insert member is inserted between the opposing surfaces of the first member and the second member. is.

[0020] The bag-shaped receiving member into which the inserting member is inserted is provided between the opposing surfaces of the first member and the second member, so that the inserting member can be inserted reliably.

[0021] The invention described in claim 8 is a movement prevention device described in claim 2, characterized in that the distance between the opposing surfaces of the first member and the second member is changed by a conversion device that converts external rotational drive into up and down movement.

[0022] The distance between the opposing surfaces of the first and second members can be changed by a conversion device that converts external rotational drive into vertical movement, so the height of the movement prevention device can be adjusted according to the distance to the bottom of the floor fixture.

[0023] The invention described in claim 9 is a movement prevention device described in claim 7, characterized in that one end is rotatably connected to the first member, the other end is rotatably connected to the second member, and the centers of two bending members configured to be bendable at the center are connected by a screw or a spring.

[0024] One end is rotatably connected to the first member, the other end is rotatably connected to the second member, and the two bending members are configured to be bendable at the center.The centers of the two bending members are connected by a screw or spring, so that the distance between the centers of the two bending members changes by rotating the screw or the elastic force of the spring, thereby changing the height of the movement prevention device.

[0025] The invention described in claim 10 is the movement prevention device described in claim 1, characterized in that at least one of the first member or the second member is made of a directional elastic material.

[0026] Since at least one of the first and second members is made of directional elastic material, the elastic modulus can be selected in the thickness direction and the horizontal direction, thereby effectively preventing furniture from moving.

[0027] An eleventh aspect of the present invention is the movement prevention device according to the first aspect, characterized in that an operating unit for operating the movement prevention device is connected to the first member or the second member.

[0028] Since an operating portion for operating the movement prevention device is connected to the first member or the second member, the movement prevention device can be easily installed. [Brief explanation of the drawings]

[0029] [Figure 1] 10 is an explanatory diagram showing how to insert the movement prevention device 10 under the fixture 100. FIG. [Figure 2] 10 is an explanatory diagram showing how the insertion member 15 is inserted into the insertion opening 14. FIG. [Figure 3] 10 is an explanatory view showing how the inserting member 15 is inserted into the bag-shaped receiving member. [Figure 4] 10 is an explanatory diagram showing how the distance between a first member 11 and a second member 12 connected by a pair of bending members is changed by an insert member. FIG. [Figure 5] 1A and 1B are explanatory diagrams of an inward-bending type and an outward-bending type of center-bending member, respectively. [Figure 6] 10 is an explanatory diagram showing how the movement prevention case 30 prevents the second member 12 from moving in the horizontal direction. FIG. [Figure 7] 10 is an explanatory diagram showing how the movement prevention case separated into upper and lower parts prevents the second member 12 from moving in the horizontal direction. FIG. [Figure 8] 1A and 1B are explanatory diagrams of a vertical type and a horizontal type insertion member stopper, respectively, which prevent the insertion member from being pushed out. [Figure 9] (A) Shape of the opposing surfaces of the first and second members, (B) Shape of the inserted member, which prevents the inserted member from being ejected toward the insertion opening [Figure 10] FIG. 10 is an explanatory diagram showing how a compression spring is attached to the center of opposing bending members to bias the first and second members in a direction increasing the distance between them. DETAILED DESCRIPTION OF THE INVENTION

[0030] An embodiment of the present invention will be described below with reference to the drawings. Fig. 1(A) shows a fixture 100 that needs to be prevented from moving out of control due to an earthquake or other event. Conventionally, fixtures have often been prevented from moving out of control by locking their casters. However, with the recent increase in models with narrow spaces between the fixture and the floor, it has become difficult to install movement prevention devices that lock the casters to prevent the fixture from moving. Therefore, a movement prevention device 10 has been developed that can be inserted between the bottom of the fixture 100 of the present invention and the floor, as shown in Fig. 1(B), which can be used in narrow spaces, to prevent the fixture from moving out of control.

[0031] 2(A) shows an insert member 15 that is inserted between a first member 11 that contacts the floor surface and a second member 12 that contacts the bottom surface of the fixture, increasing the distance between the first member 11 and the second member 12. The combined height of the first member 11 and the second member 12 when the insert member is not inserted is ha. If this height is made smaller than the distance between the fixture 100 and the floor, the movement prevention device 10 can be easily installed between the bottom surface of the fixture and the floor.

[0032] Here, if the insertion opening 14 of the movement prevention device 10 is formed so that the distance between the opposing surfaces of the first member 11 and the second member 12 gradually increases toward the front, it will be easier to insert the insertion member 15. This formation can be achieved in the first member and the second member themselves, or by fixing additional members to the first member and the second member.

[0033] 2(B) shows how insert member 15 is inserted between first member 11 in contact with the floor surface and second member 12 in contact with the bottom surface of the fixture, and the thickness of insert member 15 is added to the thickness of first member 11 and second member 12 to form hb. By making hb larger than the distance between fixture 100 and the floor surface, first member 11 is pressed against the floor surface and second member 12 is pressed against the bottom surface of the fixture, preventing the fixture from moving.

[0034] Here, by subjecting the opposing surfaces of the first member 11 and the second member 12 to a lubrication process, the insertion of the insertion member 15 becomes easier.

[0035] Figure 3 shows the state in which a non-insertion member 13 that guides the insertion of the insertion member 15 is added between the first member 11 and the second member 12. Figure 3(A) shows the state in which the insertion member 15 is inserted from the entrance of the bag-shaped non-insertion member 13.

[0036] 3(B) to 3(C), insert member 15 is inserted further to achieve thickness h, which is the sum of the thickness of insert member 15 and the thickness of first member 11 and second member 12. By making h larger than the distance between fixture 100 and the floor, first member 11 is pressed against the floor and second member 12 is pressed against the bottom surface of the fixture, preventing the fixture from moving.

[0037] Figure 4 shows how the first member 11 and the second member 12 are connected while the distance between them is variable using the folding members 20, 21. In Figure 4(A), the insertion member 15 is not inserted and its height Ha is smaller than the distance between the bottom surface of the fixture 100 and the floor, so the movement prevention device is moved using the movement prevention device operating unit 101 and the movement prevention device 10 is installed in an appropriate location on the fixture and the floor.

[0038] 4(B) to (C) show how the insertion member is inserted between the first member 11 and the second member 12, setting the height of the movement prevention device 10 to Hc. Hc is set to be larger than the distance between the fixture and the floor, so the first member is pressed against the floor and the second member 12 is pressed against the bottom surface of the fixture, preventing the fixture from moving.

[0039] Figure 5 shows a conversion device that converts external rotational drive into vertical movement. This shows an example of using two types of bending members as a conversion device that keeps the distance between the first member 11 and the second member 12 variable. Figure 5(A) shows an inward bending type, and Figure 5(B) shows an outward bending type. The first bending member 23 on the left side of Figure 5 and the second bending member 24 on the right side are connected at their centers with screws. The bearing 231 at the center of the first bending member 23 is a thrust bearing and receives only axial stress, while the center of the second bending member 24 is a screw 241.

[0040] 5(A), if screw 241 is a right-handed screw, turning it clockwise moves screw 241 toward the insertion port in the direction of the arrow, feeding screw 25 inward and pushing thrust bearing 231 further in the direction of the arrow. This increases the distance between the centers of first bending member 23 and second bending member 24, and increases the gap between first member 11 and second member 12.

[0041] 5(B), if screw 241 is a right-handed screw, turning it counterclockwise moves screw 241 toward the front in the direction of the arrow, screws 25 are sent outward, and thrust bearing 231 is pulled toward the front in the direction of the arrow. This decreases the distance between first bending member 23 and second bending member 24, and increases the gap between first member 11 and second member 12.

[0042] When the fixture 100 moves with the movement prevention device installed, the second member pressed against the bottom surface of the fixture tries to move with the fixture, but the first member is pressed against the floor and does not move, so the second member is subjected to horizontal stress. Here, the movement prevention case prevents the second member 12 from deforming.

[0043] 6(A) shows a state in which the second member 12 is housed in the movement prevention case 30 fixed to the first member. In this state, the movement prevention device 10 is inserted between the furniture 100 and the floor.

[0044] 6(B) shows the state in which the second member 12 is raised by rotating the screw 25 from the outside. The lower part of the second member is inside the movement prevention case 30, which prevents the second member from moving when the fixture 100 moves, thereby preventing the fixture 100 from moving.

[0045] 7 shows the case where the movement prevention case is divided into upper and lower halves. The movement prevention case is divided into lower movement prevention case A31 and upper movement prevention case B32, which are nested one inside the other. Movement prevention case A31 is fixed to the first member 11, and movement prevention case B32 is fixed to the second member 12.

[0046] The movement prevention case is divided into movement prevention case A31 and upper movement prevention case B32 and is nested, so even if the height of the movement prevention device increases significantly due to the insertion of insertion member 15, the second member 12 is restrained by the movement prevention case to the first member 11, thereby preventing the fixture 100 from moving.

[0047] Figure 8 shows stoppers 34, 35 that prevent the insertion member 15 from being sent out. Figure 8(A) shows a vertical stopper 34 in which the stopper is inserted from above, and Figure 8(B) shows a vertical stopper 35 in which the stopper is inserted from the side.

[0048] 9(A) shows how the opposing surfaces of the first member 11 and the second member 12 are sloped to prevent the insertion member 15 from being ejected to the outside after insertion. The movement prevention device 10 inserted between the fixture 100 and the floor is subjected to pressure in the vertical direction. This pressure is converted into stress in the depth direction by the slope of the opposing surfaces of the first member 11 and the second member 12, preventing the insertion member from being ejected toward the insertion opening.

[0049] 9(B) shows an insert member 15 in which the thickness of the main body 152 of the insert member 15 increases in the insertion direction to prevent the insert member 15 from being ejected in the direction of the insertion opening after insertion. The movement prevention device 10 inserted between the fixture 100 and the floor is subjected to pressure in the vertical direction. This pressure is converted into stress in the depth direction by the inclination of the opposing surfaces of the first member 11 and the second member 12, preventing the insert member from being ejected in the direction of the insertion opening.

[0050] Figure 10 shows how a stable pressure is applied to the movement prevention device by urging the center of the inward bending member with an elastic body such as a spring in a direction that increases the distance between the opposing surfaces of the first member 11 and second member 12. In Figure 10(A), the compression spring can be placed between the fixture and the alcove in a compressed state. By removing the hook that holds the compression spring in a compressed state with an insert or the like, a stress is applied to the bending member in a direction that increases its length, increasing the distance between the bending members and the distance between the opposing surfaces of the first member 11 and second member 12.

[0051] In the case of outward bending members, the distance between the opposing surfaces of the first member 11 and the second member 12 is increased by biasing the opposing central portions of the bending members with a tension spring in a direction that draws them closer together.

[0052] The first member 11 and the second member may be isotropic elastic bodies, but it is also preferable to reduce lateral deformation by changing the elastic modulus in the vertical and horizontal directions. To change the elastic modulus in the vertical and horizontal directions, for example, a fiber-reinforced composite material such as a plastic material reinforced with carbon fiber or glass fiber is a candidate. This has high rigidity in the direction of the fibers, making it difficult to deform, but low rigidity in the direction perpendicular to the fibers.

[0053] The above-described embodiment is a part of the present invention, and any embodiment including the technical idea of ​​the present invention is included in the technical idea of ​​the present invention. [Explanation of symbols]

[0054] 10 Movement arrester 101 Movement blocker operation section 11 First member 12 Second member 13 Inserted member 15 Insert 151 Insertion member operating section 152 Main Unit 23 First bending member 231 Thrust bearing 24 Second bending member 241 Nut 25 Height adjustment screw 30 Anti-movement case 31 Anti-movement case A 32 Anti-movement case B 34 Vertical stopper 100 Fixtures

Claims

1. A movement prevention device that is inserted between a fixture placed on a floor and the floor to prevent movement, A first member contacting the floor and a second member contacting the bottom surface of the fixture, A movement prevention device characterized in that the distance between the opposing surfaces of the first member and the second member is variable.

2. 2. The movement prevention device according to claim 1, wherein a movement prevention case fixed to the first member prevents the second member from moving in a horizontal direction.

3. The movement prevention device according to claim 2, characterized in that the distance between the first member and the second member is adjusted by inserting an insertion member through an insertion opening between the first member and the second member.

4. A movement prevention device as described in any one of claims 1 to 3, characterized in that the distance between the opposing surfaces of the first member and the second member at the insertion port is formed so as to gradually increase toward the front, or the distance between the opposing surfaces of the first member and the second member increases toward the back.

5. 4. The device for preventing movement according to claim 3, wherein the thickness of the tip portion of the insertion member decreases toward the tip, or the thickness of the main body portion of the insertion member increases toward the tip.

6. 4. The movement prevention device according to claim 3, wherein the opposing surfaces of the first member and the second member are lubricated.

7. 4. The movement prevention device according to claim 3, further comprising a bag-shaped receiving member into which the inserting member is inserted between the opposing surfaces of the first member and the second member.

8. 3. The movement prevention device according to claim 2, wherein the distance between the opposing surfaces of the first member and the second member is changed by a conversion device that converts an external rotational drive into vertical movement.

9. The movement prevention device described in claim 7, characterized in that one end is rotatably connected to the first member, the other end is rotatably connected to the second member, and the centers of two bending members configured to be bendable at the center are connected by a screw or spring.

10. 2. The device for preventing movement according to claim 1, wherein at least one of the first member and the second member is made of a directional elastic material.

11. 2. The movement prevention device according to claim 1, wherein an operating portion for operating the movement prevention device is connected to the first member or the second member.

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