Fixture

Abstract

The present invention provides a fixing device that is attached to and secured to a fixed member, and whose operation can be changed according to the environment. [Solution] The fixing device 3 has a main body 4 through which a rod-shaped member to be fixed 1 passes, and a shaft member 8 that is supported by the main body 4 and rotates. When the shaft member 8 is rotated clockwise by an operating member 2 attached to the end of the shaft member 8, the arc-shaped contact surface of the shaft member 8 is pressed against the member to be fixed 1. When the shaft member 8 is rotated counterclockwise, the arc-shaped contact surface of the shaft member 8 is also pressed against the member to be fixed 1, thereby fixing the fixing device 3 to the member to be fixed 1.

Description

Technical Field

[0001] The present invention relates to a fixture that is attached to a fixed member and fixed thereto.

Background Art

[0002] Conventionally, as a clamp used for connecting pipes at a temporary scaffolding or the like at a construction site, for example, there is a technique described in Patent Document 1 below (hereinafter referred to as "Known Invention 1"). The clamp according to Known Invention 1 has a structure in which a pipe is gripped by a clamp body and a lid body. One end of the clamp body and one end of the lid body are connected via a hinge, and the other end of the clamp body and the other end of the lid body are connected via a bolt and a nut. The lid body opens and closes with respect to the clamp body via a hinge, and after the pipe is passed through, the lid body is closed and the nut is tightened, so that the pipe is gripped by the clamp body and the lid body.

[0003] In addition, conventionally, a clamp 100 according to the prior art shown in FIG. 13 has been used for positioning a sensor or the like. In this clamp 100, since a slit 103 is formed at an end of a cubic main body 101, the end is split into two, and the end portions are a pair of clamp pieces 102 facing each other through the slit 103. A bolt 104 passes through the clamp piece 102, and the slit 103 leads to a hole 105 penetrating the main body 101. Therefore, when the bolt 104 is tightened with a support column (not shown) passed through the hole 105, the clamp pieces 102 approach each other and the support column is gripped. Since the two holes 105 formed in the main body 101 are arranged perpendicular to each other, the clamp 100 can move up and down and back and forth, and can be fastened to the support column at an arbitrary position. By connecting a plurality of clamps 100 and support columns, the clamp 100 can be arranged at a desired position. Therefore, if a sensor or the like (not shown) is attached to the clamp 100, the sensor can be placed in a desired space.

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-148148 [Overview of the project] [Problems that the invention aims to solve]

[0005] As described above, in the publicly known invention, the pipe is gripped by tightening a nut at one end. Therefore, when loosening the nut, the same end must be used for the operation, and the direction in which the nut is rotated is fixed whether it is being tightened or loosened. Consequently, the range of motion required for operation is limited.

[0006] Similarly, in the conventional clamp 100, the clamp piece 102 narrows and grips the support column when the bolt 105 is tightened, so the same operation is required for the bolt 105 when it is loosened. Also, whether the bolt 105 is being tightened or loosened, the direction in which the bolt 105 is rotated is fixed. Therefore, the actions required for operation are limited. Furthermore, the clamp piece 102 must have an open end due to the slit 103, meaning that it can only be formed at the end.

[0007] This invention was proposed in view of the above circumstances, and aims to provide a fixing device whose operation can be changed according to the environment. [Means for solving the problem]

[0008] To achieve the above objective, the fixing device according to the present invention comprises a main body portion having a gripping hole through which a rod-shaped member to be fixed is passed, and a shaft member inserted into the main body portion in a direction perpendicular to the gripping hole and rotating with the direction perpendicular to the gripping hole as the axis of rotation, wherein the shaft member is eccentric with respect to the axis of rotation and has an eccentric portion exposed on the inner circumferential surface of the gripping hole, an arc-shaped contact surface portion formed on the eccentric portion that contacts the side surface of the member to be fixed in the circumferential direction, a supported portion connected to both ends of the eccentric portion and supported by the main body portion, and an operated portion formed at the end of the supported portion that is exposed on the outer surface of the main body portion, wherein the shaft member rotates via an operating member connected to the operated portion, returning from an extended state in which the arc-shaped contact surface portion protrudes from the inner circumferential surface of the gripping hole to the extended state, and during the rotation of the shaft member, the arc-shaped contact surface portion does not protrude from the inner circumferential surface of the gripping hole.

[0009] The fixing device according to the present invention is characterized in that when the shaft member rotates in one direction, the arc-shaped contact surface is pressed against the member to be fixed in one direction, resulting in a one-way fixing state, and when the shaft member rotates in the opposite direction, the arc-shaped contact surface is pressed against the member to be fixed in the opposite direction, resulting in a reverse-way fixing state.

[0010] The fixing device according to the present invention is characterized in that the operated portion is formed at the respective ends of both of the supported portions.

[0011] The fixing device according to the present invention is characterized in that the main body portion has a support hole into which the shaft member is inserted, and the operated portion is formed on the end face of the supported portion that is exposed in the support hole.

[0012] The fixing device according to the present invention is characterized in that the operated portion is located inside the outer surface of the main body. Furthermore, the fixing device according to the present invention is characterized by having a plurality of gripping holes with different orientations, and having the shaft member for each of the gripping holes. [Effects of the Invention]

[0013] The fixing device according to the present invention comprises a main body portion having a gripping hole through which a rod-shaped member to be fixed is passed, and a shaft member inserted into the main body portion in a direction perpendicular to the gripping hole and rotating with the direction perpendicular to the gripping hole as the axis of rotation. The shaft member has an eccentric portion that is eccentric with respect to the axis of rotation and exposed on the inner circumferential surface of the gripping hole, an arc-shaped contact surface portion formed on the eccentric portion that contacts the side surface of the member to be fixed in the circumferential direction, a supported portion connected to both ends of the eccentric portion and supported by the main body portion, and an operated portion formed at the end of the supported portion and exposed on the outer surface of the main body portion. The shaft member rotates via an operating member connected to the operated portion, returning to the protruding state from a protruding state where the arc-shaped contact surface portion protrudes from the inner circumferential surface of the gripping hole, and during the rotation of the shaft member, the arc-shaped contact surface portion does not protrude from the inner circumferential surface of the gripping hole. As the shaft member rotates, it changes between an extended state and a non-extended state. When the member to be fixed is not passed through the gripping hole, the shaft member rotates from the extended state to the non-extended state, and then rotates again to return to the extended state. In other words, the extended and non-extended states are repeated as the shaft member rotates. When the member to be fixed is passed through the gripping hole, in the extended state, the arc-shaped contact surface protrudes into the gripping hole and contacts the member to be fixed. The arc-shaped contact surface is pressed against the side surface of the member to be fixed, thereby fixing the member to the fixing device. Therefore, the shaft member rotates from the extended state to the non-extended state, and then rotates again to return to the extended state. Thus, the operation can be changed according to the environment.

[0014] The fixing device according to this invention achieves a unidirectional fixing state where, when the shaft member rotates in one direction, the arc-shaped contact surface is pressed against the member to be fixed in that direction, and a reverse-directional fixing state where, when the shaft member rotates in the opposite direction, the arc-shaped contact surface is pressed against the member to be fixed in the opposite direction. Therefore, for example, if the member to be fixed is inserted into the gripping hole in the non-extended state, and the shaft member rotates in one direction, it becomes a unidirectional extension state and the member to be fixed is fixed, and if it rotates in the opposite direction, it becomes a reverse-directional extension state and the member to be fixed is also fixed. Thus, the operation for rotating the shaft member can be changed according to the environment.

[0015] The fixing device according to this invention has the operated portion formed at each end of both supported portions. That is, the shaft member can be rotated whether the operating member is connected to one end or to the other end. Therefore, the operation can be changed according to the environment. For example, an operator can connect the operating member to the operated portion at one end, rotate the shaft member in one direction to extend it and fix the fixed member to the fixing device, and then, when removing the fixing device, connect the operating member to the operated portion at the other end, rotate the shaft member in the opposite direction to retract it and release the fixed member.

[0016] The fixing device according to this invention has a main body portion having a support hole into which a shaft member is inserted, and an operated portion formed on the end face of the supported portion exposed in the support hole. Therefore, the shaft member can rotate within the support hole. In other words, no member that would hinder rotation comes into contact with the outer surface of the shaft member, and the external force that causes the shaft member to rotate acts on the end face of the supported portion, so it does not hinder the rotation of the shaft member.

[0017] In the fixing device according to this invention, the operated portion is located inside the outer surface of the main body. With this configuration, the operated portion does not protrude from the outer surface of the main body, and therefore does not interfere with surrounding members. [Brief explanation of the drawing]

[0018] [Figure 1] Figure 1 is an external perspective view of the fastener in use according to an embodiment of the present invention. [Figure 2] Figure 2 is an exploded perspective view of a fastener according to an embodiment of the present invention. [Figure 3] Figure 3 is a cross-sectional view taken along line III-III in Figure 5, and is a side cross-sectional view of the shaft member in the fastener according to an embodiment of the present invention. [Figure 4] Figure 4 is a view taken via arrow IV in Figure 3, and is a first external view of the shaft member in the fixing device according to an embodiment of the present invention. [Figure 5]FIG. 5 is a view from the direction V in FIG. 3 and is a second external view of the shaft member in the fixture according to the embodiment of the present invention. [Figure 6] FIG. 6 is a view from the direction VI in FIG. 3 and is a third external view of the shaft member in the fixture according to the embodiment of the present invention. [Figure 7] FIG. 7 is a schematic front explanatory view for explaining the state in which the fixed member is released in the state of use of the fixture according to the embodiment of the present invention. [Figure 8] FIG. 8 is a schematic side explanatory view for explaining the state in which the fixed member is released in the state of use of the fixture according to the embodiment of the present invention. [Figure 9] FIG. 9 is a schematic front explanatory view for explaining the first aspect of the state in which the fixed member is fixed in the state of use of the fixture according to the embodiment of the present invention. [Figure 10] FIG. 10 is a schematic side explanatory view for explaining the first aspect of the state in which the fixed member is fixed in the state of use of the fixture according to the embodiment of the present invention. [Figure 11] FIG. 11 is a schematic front explanatory view for explaining the second aspect of the state in which the fixed member is fixed in the state of use of the fixture according to the embodiment of the present invention. [Figure 12] FIG. 12 is a schematic side explanatory view for explaining the second aspect of the state in which the fixed member is fixed in the state of use of the fixture according to the embodiment of the present invention. [Figure 13] FIG. 13 is an external perspective view of a conventional clamp.

Embodiments for Carrying Out the Invention

[0019] Hereinafter, a fixture according to an embodiment of the present invention will be described based on the drawings. FIGS. 1 and 2 show the fixture 3 according to the present embodiment. In the following description, as shown in FIG. 1, the longitudinal direction of the fixed member 1 to which the fixture 3 is fixed is taken as the front (Forward) or the rear (Backward), and the direction orthogonal to the fixed member 1 is taken as the down (Up), down (Down), right side (Right Side), and left side (Left Side).

[0020] As shown in Figure 1, the fixing device 3 is attached to and fixed to the fixed member 1, which is a cylindrical rod shape, and prevents a device or the like (not shown) that has been passed through the fixed member 1 from coming out of the fixed member 1. The fixing device 3 has a main body 4 that is attached to the fixed member 1 and a shaft member 8 that is supported by the main body 4 and rotates. An operating member 2 is attached to the shaft member 8, and the shaft member 8 rotates as the operating member 2 rotates. The operating member 2 is, for example, a long rod shape with a hexagonal cross-section, a so-called hex wrench. The operating member 2 is detachable from the shaft member 8. The shape of the operating member 2 is arbitrary.

[0021] As shown in Figures 1 and 2, the main body 4 is approximately a rectangular parallelepiped. The main body 4 has a gripping hole 5 through which the fixed member 1 passes, and a support hole 6 through which the shaft member 8 passes. The gripping hole 5 is cylindrical in shape, following the side shape of the fixed member 1, and penetrates the center of the front and rear outer surfaces of the main body 4 in the front-rear direction. The support hole 6 is cylindrical in shape, following the shaft member 8, and penetrates the upper part of the left and right outer surfaces of the main body 4 in the left-right direction, perpendicular to the gripping hole 5 and connected to the gripping hole 5. That is, the gripping hole 5 and the support hole 6 overlap, causing a part of both the gripping hole 5 and the support hole 6 to open, forming an opening 7. The opening 7 opens a part of the upper portion of the inner circumferential surface that forms the gripping hole 5, and opens a part of the lower portion of the inner circumferential surface that forms the support hole 6, forming the boundary between the gripping hole 5 and the support hole 6. On the outer western side of the main body 4, around the support hole 6, an identifier A, such as an arrow indicating the rotation direction of the shaft member 8, is displayed.

[0022] The shaft member 8 is a rod-shaped structure with a circular cross-section, and has an eccentric portion 13 in the center, with supported portions 9 connected to both ends of this eccentric portion 13. The eccentric portion 13 and the supported portions 9 are connected in a straight line. A portion of the eccentric portion 13 has an outer surface that is formed in a concave arc shape around its circumference. Each end of both supported portions 9 has an operated portion 12 to which the operating member 2 is connected. The operated portion 12 is the end face 10 of the supported portion 9 and a hexagonal groove 11 formed on this end face 10. The shape of the groove 11 is arbitrary as long as the operating member 2 fits into it.

[0023] The shaft member 8 is passed through the support hole 6 of the main body 4, the supported portion 9 is supported by the main body 4, and the eccentric portion 13 is positioned in the opening 7. The eccentric portion 13 is exposed on the inner circumferential surface of the gripping hole 5. The end face 10 and groove 11 are exposed from the support hole 6 on the left and right outer surfaces of the main body 4, but are either flush with the left and right outer surfaces of the main body 4 or are located inside the left and right outer surfaces of the main body 4. The shaft member 8 rotates in the support hole 6 with the left-right direction, which is perpendicular to the gripping hole 5, as the axis of rotation 21.

[0024] Here, the shaft member 8 will be described in detail based on the drawings. Figures 3 to 6 show the external appearance and cross-section of the shaft member 8. Figure 3 shows the cross-section of the shaft member 8, Figure 4 shows the external appearance viewed in the direction of arrow IV in Figure 3, Figure 5 shows the external appearance viewed in the direction of arrow V in Figure 3, and Figure 6 shows the external appearance viewed in the direction of arrow VI in Figure 3.

[0025] As shown in Figures 3 to 6, the rotation axis 21 of the shaft member 8 passes through the center of the supported portion 9. The eccentric portion 13 consists of a base portion 14 connected to the supported portion 9 and a constricted portion 15 connected to the base portion 14 and positioned between the base portions 14. The base portion 14 and the constricted portion 15 are formed on an eccentric axis 22 passing through their respective centers. The eccentric axis 22 is eccentric with respect to the rotation axis 21, and the eccentric portion 13 is formed within the outer circumferential surface of the supported portion 9. More specifically, the circumference of the base portion 14, which is the largest circumference of the eccentric portion 13, is smaller than the circumference of the supported portion 9, and is either aligned with the projected circumference P, which is the projection of the supported portion 9 when viewed from the axial direction of the rotation axis 21, or is inside the projected circumference P. In other words, because the eccentric portion 13 is eccentric with respect to the rotation axis 21, if the base portion 14 protrudes from the projected circumference P, the portion of the outer surface of the base portion 14 that protrudes from the projected circumference P is appropriately ground to align with the projected circumference P (connecting surface 20). Therefore, the base portion 14 is not a perfect circle with respect to the eccentric axis 22 as the center, and the outer surface of the base portion 14 does not protrude from the projected circumference P.

[0026] The constricted portion 15 gradually decreases in diameter from both ends toward the center. The outer circumferential surface of the constricted portion 15 is concave arc-shaped around its circumference and is a curved surface that follows the side shape of the fixed member 1. The constricted portion 15 has a non-contact surface portion 16 that does not contact the fixed member 1 and an arc-shaped contact surface portion 17 that contacts the fixed member 1. The arc-shaped contact surface portion 17 is composed of a first arc-shaped contact surface portion 18 and a second arc-shaped contact surface portion 19. The non-contact surface portion 16, the first arc-shaped contact surface portion 18, and the second arc-shaped contact surface portion 19 are all located inside the outer circumferential surface of the supported portion 9 and are formed inside the projected circumference P. The non-contact surface portion 16 is located on the opposite side of the eccentric axis 22 with respect to the rotation axis 21, and is, for example, in the range below a virtual perpendicular line V2 with respect to a virtual straight line V1 passing through the rotation axis 21 and the eccentric axis 22. The first arc-shaped contact surface 18 is located on the eccentric axis 22 side with respect to the rotation axis 21, and is, for example, in the range behind the virtual straight line V1 and above the virtual vertical line V2 (upper right in Figure 3). The second arc-shaped contact surface 19 is located on the eccentric axis 22 side with respect to the rotation axis 21, and is, for example, in the range in front of the virtual straight line V1 and above the virtual vertical line V2 (upper left in Figure 3). The ranges of the non-contact surface 16, the first arc-shaped contact surface 18, and the second arc-shaped contact surface 19 are arbitrary.

[0027] As described above, this embodiment is formed. Next, the effects of this embodiment will be explained with reference to the drawings, along with their operation. Figures 7 to 12 show an overview of the fastener 3 in use. Figures 7 and 8 show a state in which the arc-shaped contact surface portion 17 of the shaft member 8 does not protrude from the inner circumferential surface of the gripping hole 5 (hereinafter, regardless of whether the member to be fixed 1 is passed through the gripping hole 5 or not, the state in which the arc-shaped contact surface portion 17 does not protrude from the inner circumferential surface of the gripping hole 5 will be referred to as the "non-protruding state"), and the fastener 3 is released and can be attached to and detached from the member to be fixed 1 (hereinafter referred to as the "released state"). Figures 9 and 10 show a state in which the first arc-shaped contact surface portion 18 of the shaft member 8 protrudes from the inner circumferential surface of the gripping hole 5 in one direction D1 (hereinafter, regardless of whether the member to be fixed 1 is passed through the gripping hole 5 or not, the state in which the first arc-shaped contact surface portion 18 protrudes from the inner circumferential surface of the gripping hole 5 in one direction D1 will be referred to as the "one-way protrusion state"), and the fixing device 3 is fixed to the member to be fixed 1 by pressing the first arc-shaped contact surface portion 18 against the member to be fixed 1 in one direction D1 (hereinafter referred to as the "one-way fixed state"). Figures 11 and 12 show a state in which the second arc-shaped contact surface portion 19 of the shaft member 8 protrudes from the inner circumferential surface of the gripping hole 5 toward the reverse direction D2 (hereinafter, regardless of whether the member to be fixed 1 is passed through the gripping hole 5, the state in which the second arc-shaped contact surface portion 19 protrudes from the inner circumferential surface of the gripping hole 5 toward the reverse direction D2 will be referred to as the "reverse direction protrusion state"), and the fixing device 3 is fixed to the member to be fixed 1 by pressing the second arc-shaped contact surface portion 19 toward the member to be fixed 1 toward the reverse direction D2 (hereinafter referred to as the "reverse direction fixed state"). In addition, the orientation of the operating member 2 is also described below, but since the operating member 2 is detachably attached to the shaft member 8, the orientation of the operating member 2 is arbitrary and is not limited to the embodiments described below.

[0028] As shown in Figures 7 and 8, in the released state, the operating member 2 is oriented upward. The non-contact surface portion 16 of the shaft member 8 is exposed from the opening 7, and the arc-shaped contact surface portion 17 of the shaft member 8 is positioned away from the opening 7 and oriented toward the inner surface of the support hole 6 relative to the opening 7. That is, the constricted portion 15 does not protrude from the inner circumferential surface of the gripping hole 5 of the main body portion 4 into the inside of the gripping hole 5, but is located on the outside or inner circumferential surface of the gripping hole 5, away from and not in contact with the fixed member 1. Therefore, by passing the fixed member 1 through the gripping hole 5, the fixing device 3 can be positioned at any position on the fixed member 1.

[0029] In the released state, when the operating member 2 is gradually tilted backward (to the right in Figure 8), it enters a one-way fixed state in a one-way extended state. As shown in Figures 9 and 10, as the operating member 2 rotates, the shaft member 8 rotates in one direction D1 (clockwise in Figure 10) around the rotation axis 21, and the first arc-shaped contact surface portion 18 of the shaft member 8 is positioned outside the support hole 6 with respect to the opening 7. That is, since the eccentric axis 22 of the eccentric portion 13 is eccentric with respect to the rotation axis 21, as the shaft member 8 rotates, the first arc-shaped contact surface portion 18 of the eccentric portion 13 gradually protrudes inward from the inner circumferential surface of the gripping hole 5 in the main body portion 4 through the opening 7 in one direction D1, pressing down on the fixed member 1 in one direction D1.

[0030] In the open state shown in Figures 7 and 8, or the one-way fixed state shown in Figures 9 and 10, when the operating member 2 is gradually tilted forward (to the left in Figures 8 and 10), it enters the reverse-direction fixed state in the reverse-direction extension state. As shown in Figures 11 and 12, as the operating member 2 rotates, the shaft member 8 rotates in the reverse direction D2 (counterclockwise in Figure 12) around the rotation axis 21, and the second arc-shaped contact surface portion 19 of the shaft member 8 is positioned outside the support hole 6 with respect to the opening 7. That is, since the eccentric axis 22 of the eccentric portion 13 is eccentric with respect to the rotation axis 21, as the shaft member 8 rotates, the second arc-shaped contact surface portion 19 of the eccentric portion 13 gradually protrudes inward from the inner circumferential surface of the gripping hole 5 in the main body portion 4 through the opening 7 in the reverse direction D2, pressing down on the fixed member 1 in the reverse direction D2.

[0031] Therefore, whether the shaft member 8 rotates in one direction D1 or in the opposite direction D2 via the operating member 2, it will be either fixed in one direction or fixed in the opposite direction. Also, if the shaft member 8 rotates in the opposite direction D2 from the fixed state in one direction, it will enter a released state during the rotation, and then return to the fixed state in the opposite direction. Similarly, if the shaft member 8 rotates in one direction D1 from the fixed state in the opposite direction, it will enter a released state during the rotation, and then return to the fixed state in one direction. Thus, the operation can be changed according to the environment.

[0032] The operated portion 12 to which the operating member 2 is connected is the end face 10 of the supported portion 9 and the hexagonal groove 11 formed on this end face 10, and is formed at the respective ends of both supported portions 9. Therefore, the shaft member 8 can be rotated whether the operating member 2 is connected to the right groove 11 or the left groove 11. Thus, the operation can be changed according to the environment.

[0033] Since the operating member 2 can be detachably attached to the groove 11 of the supported portion 9, the operating member 2 can be connected to the groove 11 by changing its orientation and position. Therefore, the operation can be changed according to the environment.

[0034] The end face 10 of the supported portion 9 is either flush with the left and right outer surfaces of the main body portion 4, or positioned inward from the left and right outer surfaces of the main body portion 4. Therefore, the shaft member 8 can rotate within the support hole 6. In other words, no member that would hinder rotation comes into contact with the outer surface of the shaft member 8, and since the external force that causes the shaft member 8 to rotate acts on the end face 10, it does not hinder the rotation of the shaft member 8. Furthermore, since the operated portion 12 does not protrude from the outer surface of the main body portion 4, the operated portion 12 does not interfere with surrounding members.

[0035] On the left and right outer surfaces of the main body 4, around the support hole 6, identifiers A, such as arrows, are displayed to indicate the direction in which the operating member 2 should be rotated. When the operating member 2 is removed, the direction of rotation to the released state becomes unknown, but by indicating the direction to be fixed in one direction or fixed in the opposite direction, it becomes clear which state will be reached by rotating the shaft member 8 in which direction.

[0036] The arc-shaped contact surface 17 is a curved surface that conforms to the side shape of the fixed member 1, and therefore contacts the side of the fixed member 1 in the circumferential direction. Because the contact area between the fixed member 1 and the arc-shaped contact surface 17 is planar, the fastener 3 is difficult to detach from the fixed member 1. This prevents damage to the fixed member 1 and wear of the arc-shaped contact surface 17 caused by misalignment between the two. Furthermore, because the two make surface contact, the fastener 3 is firmly fixed to the fixed member 1, and in principle, no components that generate elastic force to press the arc-shaped contact surface 17 against the fixed member 1 are required, allowing for a smaller design. Moreover, the absence of such components reduces the number of parts.

[0037] In the fixing device 3, the arc-shaped contact surface 17 of the shaft member 8 is formed inward from the outer circumferential surface of the supported portion 9 on the shaft member 8. With this configuration, when the arc-shaped contact surface 17 is pressed against the fixed member 1, the shaft member 8 intersects with the fixed member 1 with the rotation axis 21 of the shaft member 8 approaching the outer surface of the fixed member 1. In other words, because the shaft member 8 is closer to the fixed member 1, a smaller design is possible.

[0038] In the fastener 3, the eccentric portion 13 of the shaft member 8 is eccentric with respect to the rotation axis 21 and is formed within the outer circumferential surface of the supported portion 9. That is, since the base portion 14 is aligned with the projected circumference P by the connecting surface 20, the eccentric portion 13 is on the same plane as the outer circumferential surface of the supported portion 9 on the shaft member 8, or inside this outer circumferential surface. Therefore, although the eccentric portion 13 is eccentric, it does not protrude outside the outer circumferential surface of the supported portion 9. With this configuration, in the design of the fastener 3, the diameter of the supported portion 9 can be considered as the diameter of the shaft member 8, without relying on the diameter of the eccentric portion 13, making the design and assembly of the components easier.

[0039] The state of the fixing device 3 changes due to the shaft member 8, and since the shaft member 8 is inserted into the support hole 6, the position of the shaft member 8 is not limited to the end of the main body 4. In other words, it is not a configuration that can only be formed at the end, as in the prior art. Therefore, a configuration with multiple gripping holes and shaft members becomes possible.

[0040] In other embodiments of this invention, the operated portion is formed on only one side of the supported portion. In another embodiment, the supported portion is exposed outward from the support hole of the main body, and the operated portion is formed on the protruding end or end face. In another embodiment, the main body has multiple gripping holes and support holes, and a shaft member is inserted into each support hole. For example, in a longitudinal main body, gripping holes and support holes may be alternately formed in the longitudinal direction, or the first gripping hole may penetrate from front to back and the second gripping hole may penetrate from left to right. Thus, multiple members to be fixed can be inserted and fixed into a single fixing device.

[0041] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above. Furthermore, various design modifications can be made to the present invention as long as they do not deviate from the matters described in the claims for utility model registration. [Explanation of symbols]

[0042] 1 Fixed member 2 Operating parts 3 Fixtures 4 Main body part 5. Holding hole 6 Support holes 7 opening 8. Shaft material 9 Supported Departments 10 End face 11 ditch 12 Operated Department 13. Eccentric part 14. Base 15 Hanging Department 16 Non-contact face 17. Arc-shaped contact face 18 First arc-shaped contact face 19 Second arc-shaped contact face 20 Connecting surfaces 21 return shaft 22 Eccentric shaft A identifier P projection circle V1 Qi Xiang Straight Line V2 wants vertical lines D1 Direction D2 in the opposite direction

Claims

1. A main body portion having a gripping hole through which a rod-shaped fixed member is passed, It has a shaft member that is inserted into the main body in a direction perpendicular to the gripping hole and rotates with the direction perpendicular to the gripping hole as its axis of rotation, The aforementioned shaft member, The eccentric portion is eccentric with respect to the rotation axis and is exposed on the inner circumferential surface of the gripping hole, The eccentric portion is formed and has an arc-shaped contact surface that contacts the side surface of the fixed member in the circumferential direction, A supported portion connected to both ends of the eccentric portion and supported by the main body portion, It has an operating portion formed at the end of the supported portion and exposed on the outer surface of the main body portion, The shaft member, when rotated via the operating member connected to the operated part, returns to the protruding state from a state in which the arc-shaped contact surface protrudes from the inner circumferential surface of the gripping hole, and during the rotation of the shaft member, returns to a non-protruding state in which the arc-shaped contact surface does not protrude from the inner circumferential surface of the gripping hole. A fastening device characterized by the following features.

2. As the shaft member rotates in one direction, the arc-shaped contact surface is pressed against the fixed member in one direction, resulting in a unidirectional fixed state. When the shaft member rotates in the opposite direction to the one direction, the arc-shaped contact surface is pressed against the fixed member in the opposite direction, resulting in a reverse-direction fixing state. The fastener according to feature 1.

3. The operated portion is formed at the respective ends of both of the supported portions. A fixing device as described in claim 1 or 2.

4. The main body portion has a support hole into which the shaft member is inserted, The operated portion is formed on the end face of the supported portion that is exposed in the support hole. A fixing device as described in claim 1 or 2.

5. The operated portion is located inside the outer surface of the main body. The fastener according to feature 4.

6. It has a plurality of gripping holes with different orientations, and each of the gripping holes has the shaft member, A fixing device as described in claim 1 or 2.

Images