Lock member

Abstract

To provide a lock member capable of improving fixing force and yield strength of the lock member.SOLUTION: A lock member 1 according to an embodiment includes a housing 10 having a first hole 11 into which a bar R having an uneven R1 is inserted and a second hole facing a direction different from the first hole 11, a button portion 20 that can be inserted into the housing 10 from the second hole and has a third hole 23 communicating with the first hole 11 when the button portion 20 is inserted into the housing 10, and an elastic body 30 that biases the button portion 20 in a direction opposite to an insertion direction of the button portion 20 into the housing 10. The inner side 11a of the housing 10 includes a first uneven portion side 11b. The inner surface 23a of the button portion 20 includes a second uneven portion 23b. In a state where the bar R is inserted into the first hole 11 and the third hole 23, the second concave-convex portion 23b is engaged with the concave-convex R1 of the bar R by the biasing force of the elastic body 30, and the concave-convex R1 of the bar R is engaged with the first concave-convex portion 11b.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a locking member. [Background technology]

[0002] Patent Document 1 describes a method for installing suspended scaffolding. In this method, an expansion nut having an expandable / contractable screw hole is inserted onto a long threaded rod that constitutes the suspended scaffolding to secure the suspended scaffolding. The expansion nut includes an outer shell having an insertion hole and a female screw portion housed in the outer shell. The female screw portion includes a pair of blocks and an elastic body interposed between the pair of blocks. Each of the pair of blocks is provided with a threaded piece. The threaded holes are contracted and closed by the biasing force of each threaded piece by the elastic body. When one of the pair of blocks is pressed, the compression of the elastic body causes the threaded pieces to move relatively apart in the pressing direction, allowing the threaded holes to expand.

[0003] Patent Document 2 describes a quick adjustment nut. The quick adjustment nut includes a main body having a first-direction hole through which a shaft is inserted and a second-direction hole intersecting the first-direction hole, and a button having a hole that fits into the second-direction hole of the main body and communicates with the first-direction hole of the main body, through which the shaft is inserted. A spring is attached to this quick adjustment nut. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-172160 [Patent Document 2] U.S. Patent No. 4,693,656 Summary of the Invention [Problem to be solved by the invention]

[0005] The thread groove pieces of the expansion / contraction nut are formed around the entire circumference of the insertion hole. When the expansion / contraction nut and the threaded rod are engaged with each other, the thread grooves of the expansion / contraction nut are located on both sides of the threaded rod in a direction perpendicular to the direction in which the threaded rod extends. This can cause loads to be concentrated on the expansion / contraction nut, which can reduce the fixing force between the expansion / contraction nut and the threaded rod.

[0006] In the above-mentioned quick adjustment nut, a thread is formed only in a portion of the hole in the button portion, and no thread is formed in the portion of the main body that comes into contact with the shaft. Therefore, when the quick adjustment nut and the shaft are engaged with each other, the threads of the shaft may come into contact with the portion without the thread, causing wear, and there is room for improvement in terms of durability.

[0007] An object of the present disclosure is to provide a locking member that can improve fixing force and durability. [Means for solving the problem]

[0008] The locking member according to the present disclosure comprises (1) a housing having a first hole into which a bar having projections and recesses is inserted and a second hole facing in a direction different from the first hole, a button portion insertable into the housing through the second hole and having a third hole that communicates with the first hole when inserted into the housing, and an elastic body that biases the button portion in a direction opposite to the insertion direction of the button portion into the housing. The inner surface of the housing that defines the first hole includes a first projection and recess portion. The inner surface of the button that defines the third hole includes a second projection and recess portion. When the bar is inserted into the first hole and the third hole, the biasing force of the elastic body causes the second projection and recess portion to engage with the projections and recesses of the bar, and the projections and recesses of the bar to engage with the first projection and recess portion.

[0009] In this locking member, the biasing force of the elastic body can engage the second concave-convex portion with the concave-convex portion of the bar, and the concave-convex portion of the bar can engage with the first concave-convex portion. This allows the concave-convex portion of the bar to engage with both the first concave-convex portion and the second concave-convex portion, thereby suppressing wear on the bar and improving the durability of the locking member. When the bar is inserted into the locking member, the biasing force of the elastic body can cause the first and second concave-convex portions of the locking member to engage with the concave-convex portion of the bar. The engagement positions of the concave-convex portion of the bar and the first concave-convex portion in the longitudinal direction of the bar and the engagement positions of the concave-convex portion of the bar and the second concave-convex portion in the longitudinal direction of the bar can be made different from each other. This allows a fixing force to be applied to the bar from different positions, improving the fixing force to the bar. Additionally, the biasing force of the elastic body causes the second concave-convex portion of the button portion to apply a fixing force to the bar in the direction opposite to the insertion direction. At this time, the concave-convex portions of the bar engage with the first concave-convex portion, and a fixing force is applied to the bar from the first concave-convex portion in the insertion direction. Therefore, the direction of the fixing force applied to the bar from the second concave-convex portion can be made different from the direction of the fixing force applied to the bar from the first concave-convex portion, so the bar can be fixed in a balanced manner and the fixing force can be dispersed.

[0010] (2) In the above (1), the first uneven portion may be formed on the opposite side of the first hole as viewed from the imaginary central axis of the first hole. The second uneven portion may be formed on the insertion direction side of the third hole as viewed from the imaginary central axis of the third hole. In this case, the first uneven portion is formed on the opposite side of the elastic body as viewed from the imaginary central axis of the first hole. The second uneven portion is formed on the elastic body side as viewed from the imaginary central axis of the third hole. Therefore, the first uneven portion and the second uneven portion are arranged so as to be alternately arranged. Therefore, the first uneven portion and the second uneven portion can be arranged so as not to be continuous with each other.

[0011] (3) In the above (1) or (2), a fixing member may be provided that fixes the position of the bar in the longitudinal direction of the bar relative to the button by pressing the button in opposite directions when the bar is inserted into the first hole and the third hole. In this case, the button is pressed against the bar by the fixing member while the second concave-convex portion of the button is engaged with the concave-convex portion of the bar. This causes the bar to be pressed in the opposite direction inside the third hole, fixing the position of the bar in the longitudinal direction and preventing movement of the bar in the longitudinal direction. Therefore, the fixing member can firmly fix the locking member to the bar.

[0012] (4) In the above (3), the housing may have a fourth hole facing away from the second hole. The fixing member may press the button portion while inserted into the fourth hole. In this case, the button portion can be pressed against the bar by inserting the fixing member into the fourth hole from outside the housing. This allows the locking member to be firmly and easily fixed to the bar.

[0013] (5) In (4) above, the fixing member may have a threaded portion. The inner surface of the housing defining the fourth hole may include a threaded groove into which the threaded portion is screwed. The fixing member may press the button portion by screwing the threaded portion into the threaded groove. In this case, the locking member can be more firmly and easily fixed to the rod by threading the threaded portion of the fixing member into the threaded groove formed on the inner surface of the housing. [Effects of the Invention]

[0014] According to the present disclosure, the fixing force and bearing strength of the locking member can be improved. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is an exploded perspective view showing a locking member and a rod according to the embodiment. [Figure 2] FIG. 2 is a perspective view showing a housing of the locking member according to the embodiment. [Figure 3]FIG. 4 is a perspective view showing a button portion of the locking member according to the embodiment. [Figure 4] 10(a), (b) and (c) are cross-sectional views of a locking member illustrating the insertion and fixation of a bar into the locking member. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of a locking member according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are designated by the same reference numerals, and duplicate explanations will be omitted as appropriate. The drawings may be partially simplified or exaggerated for ease of understanding, and the dimensional proportions and the like are not limited to those shown in the drawings.

[0017] FIG. 1 is an exploded perspective view showing a locking member 1 and a bar R according to an embodiment. The term "locking member" refers to a member that is fixed to a bar. The locking member is used, for example, to install suspended scaffolding at a construction site. Alternatively, the locking member may be used to adjust the position of a processing machine. As such, the uses of locking members are diverse. Examples of locking members include lock nuts and one-touch nuts. In this embodiment, the locking member 1, which is a lock nut, will be described.

[0018] The locking member 1 includes a housing 10, a button 20, an elastic body 30, and a fixing member 40. The locking member 1 is made of, for example, iron. The button 20 and the rod R are insertable into the housing 10. In the following description, the insertion direction of the button 20 into the housing 10 is referred to as a first direction D1, the longitudinal direction of the rod R when inserted into the housing 10 is referred to as a second direction D2, and the direction perpendicular to both the first direction D1 and the second direction D2 is referred to as a third direction D3. In this embodiment, the direction in which the button 20 is inserted into the housing 10 (the insertion direction described below) may be referred to as up, upper side, or upward, and the direction opposite to the insertion direction (the opposite direction described below) may be referred to as down, lower side, or downward. However, these directions are used for convenience of explanation and do not limit the position or direction of objects.

[0019] The bar R extends in the second direction D2. A cross section of the bar R perpendicular to the second direction D2 is, for example, circular. In one example, the bar R is a round bar. The bar R has irregularities R1. The irregularities R1 are formed on the surface of the bar R. The bar R is, for example, a threaded bar. In this case, the irregularities R1 are threads extending spirally on the surface of the bar R.

[0020] FIG. 2 is a perspective view showing the housing 10 of the locking member 1 according to the embodiment. The housing 10 is a substantially rectangular parallelepiped. The housing 10 is box-shaped with an internal space. The housing 10 has a first surface 10a, a second surface 10b, a third surface 10c, a fourth surface 10d, a fifth surface 10e, and a sixth surface 10f. The first surface 10a to the sixth surface 10f form the surface of the housing 10. The first surface 10a and the second surface 10b face in the second direction D2. The third surface 10c and the fifth surface 10e face in the first direction D1. The fourth surface 10d and the sixth surface 10f face in the third direction D3.

[0021] For example, the housing 10 has a chamfered portion 10A formed between the third surface 10c and the fourth surface 10d, and a chamfered portion 10B formed between the fourth surface 10d and the fifth surface 10e. For example, the housing 10 has a chamfered portion 10C formed between the fifth surface 10e and the sixth surface 10f, and a chamfered portion 10D formed between the sixth surface 10f and the third surface 10c. When the housing 10 has multiple chamfered portions in this way, the housing 10 can be easily gripped.

[0022] The housing 10 has a first hole 11 and a second hole 12. The first hole 11 faces the second direction D2. When viewed from the second direction D2, the first hole 11 is formed, for example, at a position offset from the center of the first surface 10a. The first hole 11 is formed from the first surface 10a toward the inside of the housing 10. For example, the first hole 11 is circular when viewed from the second direction D2. A bar material R is inserted into the first hole 11. The diameter of the first hole 11 is larger than the diameter of the bar material R. The diameter of the first hole 11 is, for example, 10 mm or more and 20 mm or less.

[0023] The housing 10 has, for example, a plurality of first holes 11. In one example, the housing 10 has two first holes 11. However, one first hole 11 may penetrate the housing 10 in the second direction D2. In this way, the number of first holes 11 is not particularly limited. For example, the plurality of first holes 11 are aligned in the second direction D2. In this case, the first holes 11 are formed at positions shifted from the centers of the first surface 10a and the second surface 10b when viewed from the second direction D2. The first holes 11 are formed from the first surface 10a and the second surface 10b toward the inside of the housing 10.

[0024] The housing 10 has an inner surface 11a. The first hole 11 is defined by the inner surface 11a. The inner surface 11a is continuous with the first surface 10a (second surface 10b). The inner surface 11a is curved. The inner surface 11a extends along a circumferential direction B1 of a circle whose center is an imaginary central axis C1 of the first hole 11.

[0025] The inner surface 11a of the housing 10 that defines the first hole 11 includes a first uneven portion 11b. The first uneven portion 11b is formed on a part of the inner surface 11a. Specifically, the first uneven portion 11b is formed on the opposite side of the first hole 11 when viewed from the imaginary central axis C1 of the first hole 11. The "opposite side" will be described in detail when explaining the elastic body 30. Here, the "opposite side" means one side of the first direction D1.

[0026] For example, the first uneven portion 11b is formed on the lower side of the inner surface 11a. The first uneven portion 11b is formed, for example, only on the lower side of the inner surface 11a, and not on the upper side of the inner surface 11a. In this case, the upper side of the inner surface 11a is a smooth surface without unevenness. As an example, the first uneven portion 11b is formed on half the circumference of the inner surface 11a. The first uneven portion 11b is formed on the inner surface 11a on the side of the second hole 12. As an example, the first uneven portion 11b is a screw groove into which the unevenness R1 of the bar R is screwed. In this case, the first uneven portion 11b is formed in a spiral shape.

[0027] The second hole 12 faces in a different direction from the first hole 11. The "different direction" is, for example, the first direction D1. The second hole 12 faces in the first direction D1. The second hole 12 is formed, for example, in the center of the third surface 10c when viewed from the first direction D1. The second hole 12 is formed from the third surface 10c toward the inside of the housing 10. For example, the second hole 12 is circular when viewed from the first direction D1. The diameter of the second hole 12 is larger than the diameter of the first hole 11. The diameter of the second hole 12 is, for example, 20 mm or more and 30 mm or less.

[0028] The housing 10 has a fourth hole 13 facing away from the second hole 12. The fourth hole 13 faces the first direction D1. When viewed from the first direction D1, the fourth hole 13 is formed, for example, in the center of the fifth surface 10e. The fourth hole 13 is formed from the fifth surface 10e toward the inside of the housing 10. For example, the fourth hole 13 is circular when viewed from the first direction D1. The diameter of the fourth hole 13 is smaller than the diameter of the first hole 11. The diameter of the fourth hole 13 is, for example, 5 mm or more and 15 mm or less. A fixing member 40 is inserted into the fourth hole 13.

[0029] The fourth hole 13 is aligned with the second hole 12 along the first direction D1. The fourth hole 13 is in communication with the second hole 12. The fourth hole 13 is integrated with the second hole 12. The diameter of the fourth hole 13 is smaller than the diameter of the second hole 12. The length of the fourth hole 13 in the first direction D1 is shorter than the length of the second hole 12 in the first direction D1.

[0030] The housing 10 has an inner surface 13a. The fourth hole 13 is defined by the inner surface 13a. The inner surface 13a is continuous with the fifth surface 10e. The inner surface 13a is curved. The inner surface 13a of the housing 10 defining the fourth hole 13 includes a screw groove 13b. A screw portion 42 (described later) of the fixing member 40 is screwed into the screw groove 13b. The screw groove 13b is formed, for example, around the entire circumference of the inner surface 13a.

[0031] The housing 10 has a fifth hole 14. The fifth hole 14 faces the second direction D2. The housing 10 has, for example, a plurality of (for example, two) fifth holes 14. However, the number of fifth holes 14 may be one and is not particularly limited. The fifth holes 14 are formed from the first surface 10a and the second surface 10b toward the inside of the housing 10. The plurality of fifth holes 14 are lined up along the second direction D2.

[0032] For example, the fifth hole 14 has a circular shape when viewed from the second direction D2. A fall-out prevention pin 50, which will be described later, is inserted into the fifth hole 14. The diameter of the fifth hole 14 is, for example, 5 mm or more and 15 mm or less. The diameter of the fifth hole 14 is smaller than the diameter of the first hole 11. The fifth hole 14 is aligned with the first hole 11 along the first direction D1.

[0033] 3 is a perspective view showing the button portion 20 of the locking member 1 according to the embodiment. As described above, the button portion 20 can be inserted into the housing 10 through the second hole 12. The button portion 20 has an insertion portion 21, which is a portion inserted into the housing 10, and a flange portion 22. The flange portion 22 is not inserted into the housing 10, for example. The insertion portion 21 is, for example, columnar (cylindrical, as an example). The length of the insertion portion 21 in the first direction D1 is longer than the length of the insertion portion 21 in the second direction D2 and the length of the insertion portion 21 in the third direction D3, for example.

[0034] The button portion 20 has a third hole 23 that communicates with the first hole 11 when inserted into the housing 10. The third hole 23 extends in the second direction D2 inside the insertion portion 21. The third hole 23 faces the second direction D2. The third hole 23 penetrates the insertion portion 21.

[0035] For example, the third hole 23 is circular when viewed from the second direction D2. When the button portion 20 is inserted into the housing 10, the third hole 23 overlaps with the first hole 11 when viewed from the second direction D2. The diameter of the third hole 23 is, for example, the same as the diameter of the first hole 11. A rod R having an irregularity R1 is inserted into the third hole 23. The diameter of the third hole 23 is larger than the diameter of the rod R. The diameter of the third hole 23 is, for example, 10 mm or more and 20 mm or less.

[0036] The button portion 20 has an inner surface 23a. The inner surface 23a is formed in the insertion portion 21. The third hole 23 is defined by the inner surface 23a. The inner surface 23a is curved. The inner surface 23a extends along the circumferential direction B2 of a circle whose center is an imaginary central axis C2 of the third hole 23.

[0037] The inner surface 23a of the button part 20 that defines the third hole 23 includes a second uneven portion 23b. The second uneven portion 23b is formed on a part of the inner surface 23a. Specifically, the second uneven portion 23b is formed on the insertion direction side of the third hole 23 when viewed from the imaginary center axis C2 of the third hole 23. The "insertion direction side" will be described in detail when explaining the elastic body 30. Here, the "insertion direction side" means one side in the first direction D1.

[0038] For example, the second uneven portion 23b is formed on the upper side of the inner surface 23a. For example, the second uneven portion 23b is formed only on the upper side of the inner surface 23a, and not on the lower side of the inner surface 23a. In this case, the lower side of the inner surface 23a is a smooth surface without any unevenness. As an example, the second uneven portion 23b is formed on half the circumference of the inner surface 23a of the button portion 20. The second uneven portion 23b is formed on the side of the inner surface 23a opposite to the flange portion 22. As an example, the second uneven portion 23b is a screw groove into which the unevenness R1 of the bar R is screwed. In this case, the second uneven portion 23b is formed in a spiral shape.

[0039] For example, the flange portion 22 has a larger diameter than the insertion portion 21. The flange portion 22 is plate-shaped (for example, disk-shaped). The length of the flange portion 22 in the first direction D1 is shorter than the length of the flange portion 22 in the second direction D2 and the length of the flange portion 22 in the third direction D3. For example, the diameter of the flange portion 22 is longer than the diameter of the insertion portion 21. Furthermore, the diameter of the flange portion 22 is longer than the diameter of the second hole 12 of the housing 10. A surface of the flange portion 22 facing the first direction D1 is fixed to a surface of the insertion portion 21 facing the first direction D1. The flange portion 22 may be integral with the insertion portion 21. The flange portion 22 makes it easier to insert and press the button portion 20 (insertion portion 21) into the housing 10.

[0040] Referring again to FIG. 1, the elastic body 30 is disposed inside the housing 10. The elastic body 30 is interposed between the inner wall of the housing 10 and the button portion 20. The elastic body 30 is expandable and contractible. One example of the elastic body 30 is a coil spring (helical spring). The elastic body 30 is a spring that has elasticity against compressive force. The elastic body 30 generates a repulsive force when compressed.

[0041] The elastic body 30 biases the button part 20 in the direction opposite to the insertion direction of the button part 20 into the housing 10. The "insertion direction" means the direction in which the button part 20 faces the inside of the housing 10. The "opposite direction" means the direction in which the button part 20 faces the outside of the housing 10. In this embodiment, the "insertion direction" is upward, and the "opposite direction" is downward. The elastic body 30 biases the button part 20 in the direction in which the button part 20 faces the outside of the housing 10.

[0042] The fixing member 40 is located on one side in the first direction D1 when viewed from the housing 10. The fixing member 40 is inserted into the fourth hole 13 of the housing 10. The fixing member 40 has a knob portion 41 and a threaded portion 42. For example, a part of the fixing member 40 forms the knob portion 41, and the remaining part of the fixing member 40 forms the threaded portion 42. Before the fixing member 40 is inserted into the fourth hole 13, the fixing member 40 is oriented so that the threaded portion 42 faces downward, and in this state, the threaded portion 42 is inserted into the fourth hole 13. At least a part of the threaded portion 42 enters the interior of the housing 10 from the fourth hole 13, and the knob portion 41 is located above the housing 10.

[0043] The gripping portion 41 is, for example, annular (for example, circular) when viewed from a direction intersecting the first direction D1. The gripping portion 41 is a portion for gripping the fixing member 40. The length of the gripping portion 41 in the first direction D1 is, for example, 30 mm or more and 50 mm or less. The threaded portion 42 is linear. The threaded portion 42 extends along the first direction D1. A thread is formed on the surface of the threaded portion 42. The length of the threaded portion 42 in the first direction D1 is, for example, 10 mm or more and 20 mm or less.

[0044] 4(a), 4(b), and 4(c) are cross-sectional views of the locking member 1 illustrating the insertion and fixation of a bar R into the locking member 1. When the bar R is inserted into the first hole 11 and the third hole 23, the second uneven portion 23b engages with the uneven portions R1 of the bar R due to the biasing force of the elastic body 30, and the uneven portions R1 of the bar R engage with the first uneven portion 11b. At this time, the first uneven portion 11b is located on the opposite side of the imaginary central axis C1 from the elastic body 30. The second uneven portion 23b is located on the elastic body 30 side from the imaginary central axis C2.

[0045] The first uneven portion 11b and the second uneven portion 23b are arranged so as to be alternately staggered in the second direction D2. The first uneven portion 11b is formed in a part of the first hole 11, and the second uneven portion 23b is formed in a part of the third hole 23. The first uneven portion 11b and the second uneven portion 23b are arranged, for example, in positions that do not face each other along the first direction D1. This arrangement makes it possible to prevent the load applied to the locking member 1 from concentrating at the positions where the first uneven portion 11b and the second uneven portion 23b engage with the unevenness R1 of the bar R.

[0046] 4(a), 4(b), and 4(c), when the fixing member 40 (the lower end of the threaded portion 42) is in contact with the button portion 20, the elastic body 30 is disposed on the outer circumferential side (e.g., radially outward) of a part (e.g., a lower portion) of the threaded portion 42. When the rod R is inserted into the first hole 11 and the third hole 23, the fixing member 40 presses the button portion 20 in opposite directions, thereby fixing the position of the rod R in the second direction D2 relative to the button portion 20.

[0047] 4(a) shows a state in which the button portion 20 is pressed in the insertion direction. For example, when the button portion 20 is pressed in the insertion direction by a finger or the like, a gap S1 is formed between the housing 10 and the rod R, and a gap S2 is formed between the button portion 20 and the rod R. As a result, the first uneven portion 11b of the housing 10 and the second uneven portion 23b of the button portion 20 are both separated from the unevenness R1 of the rod R. Because the first uneven portion 11b and the second uneven portion 23b are separated from the unevenness R1 of the rod R, the locking member 1 can be moved to any position along the second direction D2 relative to the rod R.

[0048] In the state shown in FIG. 4(a), when the pressure on the button portion 20 by a finger or the like is released, the elastic body 30 urges the button portion 20 in the direction opposite to the insertion direction. FIG. 4(b) shows the state in which the button portion 20 is urged in the opposite direction by the elastic body 30. As the button portion 20 is urged in the opposite direction, the second uneven portion 23b of the button portion 20 engages with the uneven portion R1 of the rod R. This urging also causes the uneven portion R1 of the rod R to engage with the first uneven portion 11b of the housing 10. The first uneven portion 11b and the second uneven portion 23b each engage with the uneven portion R1 of the rod R, and the locking member 1 is fixed at any position on the rod R. At this time, the lower end of the screw portion 42 may be separated from the upper end of the button portion 20.

[0049] The fixing member 40 can strengthen the fixing force of the locking member 1 to the rod R. FIG. 4(c) shows a state in which the button portion 20 is firmly fixed to the rod R by the fixing member 40. The fixing member 40 presses the button portion 20 when inserted into the fourth hole 13. More specifically, the screw portion 42 presses the button portion 20 as the screw portion 42 is screwed into the screw groove 13b.

[0050] A part of the button part 20 (the part of the button part 20 above the third hole 23) is sandwiched between the fixing member 40 and the rod R. Then, the fixing member 40 is screwed into the housing 10, whereby the button part 20 is firmly fixed to the rod R. At this time, the button part 20 cannot move in either the insertion direction or the opposite direction. This restricts the movement of the locking member 1 relative to the rod R, and the locking member 1 is firmly fixed to the rod R.

[0051] Referring again to Figure 1, the locking member 1 may further include a fall-out prevention pin 50. The fall-out prevention pin 50 prevents the fixing member 40 inserted into the housing 10 from falling out of the housing 10. The fall-out prevention pin 50 is rod-shaped. The surface of the fall-out prevention pin 50 may be formed with projections and depressions.

[0052] As shown in FIGS. 1, 4(a), 4(b), and 4(c), the anti-fall-out pin 50 is inserted into the fifth hole 14 of the housing 10. The anti-fall-out pin 50 is inserted into the housing 10 along the second direction D2. A through hole 42a is formed in the threaded portion 42 of the fixing member 40 along a direction intersecting (for example, perpendicular to) the first direction D1. By inserting the anti-fall-out pin 50 from the fifth hole 14 into the through hole 42a, even if an attempt is made to remove the fixing member 40 from the fourth hole 13, the anti-fall-out pin 50 is caught on the inner surface of the housing 10, preventing the fixing member 40 from coming out of the housing 10.

[0053] Next, the effects obtained from the locking member 1 according to this embodiment will be described in more detail. In the locking member 1, the biasing force of the elastic body 30 can cause the second uneven portion 23b to engage with the uneven portion R1 of the bar R, and the uneven portion R1 of the bar R to engage with the first uneven portion 11b. As a result, the uneven portion R1 of the bar R engages with the first uneven portion 11b and the second uneven portion 23b, which suppresses wear of the bar R and improves the bearing strength of the locking member 1.

[0054] With the bar R inserted into the locking member 1, the biasing force of the elastic body 30 can cause the first uneven portion 11b and the second uneven portion 23b of the locking member 1 to engage with the uneven portions R1 of the bar R. The engagement position between the uneven portions R1 of the bar R and the first uneven portion 11b in the second direction D2 and the engagement position between the uneven portions R1 of the bar R and the second uneven portion 23b in the second direction D2 can be made different from each other. This allows a fixing force to be applied to the bar R from different positions, thereby improving the fixing force for the bar R.

[0055] In addition, the second uneven portion 23b of the button portion 20 applies a fixing force to the bar R in the direction opposite to the insertion direction due to the biasing force of the elastic body 30. At this time, the uneven portions R1 of the bar R engage with the first uneven portion 11b, and the first uneven portion 11b applies a fixing force to the bar R in the insertion direction. Therefore, the direction of the fixing force applied to the bar R from the second uneven portion 23b can be made different from the direction of the fixing force applied to the bar R from the first uneven portion 11b, so the bar R can be fixed in a balanced manner and the fixing force can be dispersed.

[0056] Furthermore, the biasing force of the elastic body 30 allows the first uneven portion 11b and the second uneven portion 23b to engage with the unevenness R1 of the bar R, thereby preventing the locking member 1 from shifting relative to the bar R. This allows the locking member 1 to be stably fixed to the bar R.

[0057] Furthermore, the first uneven portion 11b is formed on the opposite side (lower side) of the first hole 11 as viewed from the imaginary central axis C1 of the first hole 11. The second uneven portion 23b is formed on the insertion direction side (upper side) of the third hole 23 as viewed from the imaginary central axis C2 of the third hole 23. In this case, the first uneven portion 11b is formed on the side opposite the elastic body 30 as viewed from the imaginary central axis C1 of the first hole 11. The second uneven portion 23b is formed on the elastic body 30 side as viewed from the imaginary central axis C2 of the third hole 23. Therefore, the first uneven portion 11b and the second uneven portion 23b are arranged so as to be alternately arranged. Therefore, the first uneven portion 11b and the second uneven portion 23b can be arranged so as not to be continuous with each other.

[0058] The locking member 1 also includes a fixing member 40 that presses the button portion 20 in opposite directions when the bar R is inserted into the first hole 11 and the third hole 23, and the fixing member 40 fixes the position of the bar R in the second direction D2 relative to the button portion 20. In this case, the button portion 20 is pressed against the bar R by the fixing member 40 with the second uneven portion 23b of the button portion 20 engaged with the uneven portion R1 of the bar R. As a result, the bar R is pressed in the opposite direction inside the third hole 23, fixing the position of the bar R in the second direction D2 and preventing movement of the bar R in the second direction D2. Therefore, the locking member 1 can be firmly fixed to the bar R by the fixing member 40.

[0059] The housing 10 also has a fourth hole 13 facing away from the second hole 12. The fixing member 40 presses the button portion 20 while inserted into the fourth hole 13. In this case, by inserting the fixing member 40 into the fourth hole 13 from outside the housing 10, the button portion 20 can be pressed against the rod R. This allows the locking member 1 to be firmly and easily fixed to the rod R.

[0060] The fixing member 40 also has a threaded portion 42. The inner surface 13a of the housing 10, which defines the fourth hole 13, includes a thread groove 13b into which the threaded portion 42 is screwed. The fixing member 40 presses the button portion 20 when the threaded portion 42 is screwed into the thread groove 13b. In this case, the threaded portion 42 of the fixing member 40 is screwed into the thread groove 13b formed on the inner surface 13a of the housing 10, so that the locking member 1 can be fixed to the rod R more firmly and easily.

[0061] Various embodiments of the locking member according to the present disclosure have been described above. However, the locking member according to the present disclosure is not limited to the contents of the various embodiments described above, and may be further modified within the scope of the gist described in the claims. In other words, the shape, size, material, number, and arrangement of each part of the locking member according to the present disclosure can be changed as appropriate within the scope of the gist described above.

[0062] For example, in the above-described embodiment, the fixing member 40 has the threaded portion 42. However, the fixing member 40 does not have to have the threaded portion 42, and the fixing member may be, for example, a wedge. In this way, the structure and form of the fixing member are not particularly limited. Furthermore, the locking member may not have a fixing member.

[0063] In the above-described embodiment, the first uneven portion 11b of the housing 10 and the second uneven portion 23b of the button 20 are threaded and spirally formed. However, at least one of the first uneven portion of the housing and the second uneven portion of the button does not have to be threaded. For example, the first uneven portion and the second uneven portion may be multiple uneven portions aligned along the longitudinal direction of the bar. The first uneven portion and the second uneven portion only need to have unevenness that engages with the bar, and the shape, number, and form of the unevenness of the first uneven portion and the second uneven portion are not particularly limited. Furthermore, the first uneven portion and the second uneven portion may be formed continuously or intermittently.

[0064] The same applies to the recesses and projections of the bar. That is, the bar only needs to have recesses and projections that engage with the first recesses and projections and the second recesses and projections, and the shape, number, and form of the recesses and projections of the bar are not particularly limited. For example, the bar may be a rebar with multiple recesses and projections aligned along its length. In this case, too, the recesses and projections of the rebar inserted into the first hole of the housing and the third hole of the button engage with the first recesses and projections of the housing and the second recesses and projections of the button, respectively, thereby achieving the same effects as those of the above-described embodiment. [Explanation of symbols]

[0065] 1...locking member, 10...housing, 10a...first surface, 10b...second surface, 10c...third surface, 10d...fourth surface, 10e...fifth surface, 10f...sixth surface, 10A, 10B, 10C, 10D...chamfered portion, 11...first hole, 12...second hole, 11a...inner surface, 11b...first uneven portion, 13...fourth hole, 13a...inner surface, 13b...screw groove, 14...fifth hole, 20...button portion, 2 1...insertion portion, 22...flange portion, 23...third hole, 23a...inner surface, 23b...second uneven portion, 30...elastic body, 40...fixing member, 41...grip portion, 42...screw portion, 42a...through hole, 50...anti-pullout pin, B1, B2...circumferential direction, C1, C2...imaginary central axis, D1...first direction, D2...second direction, D3...third direction, R...rod material, R1...unevenness, S1, S2...gap.

Claims

1. a housing having a first hole into which a rod having projections and recesses is inserted and a second hole facing in a direction different from the first hole; a button portion that is insertable into the housing through the second hole and has a third hole that communicates with the first hole when inserted into the housing; an elastic body that biases the button portion in a direction opposite to the insertion direction of the button portion into the housing; Equipped with an inner surface of the housing that defines the first hole includes a first uneven portion; an inner surface of the button portion that defines the third hole includes a second uneven portion; When the rod is inserted into the first hole and the third hole, the second uneven portion engages with the uneven portion of the rod by the biasing force of the elastic body, and the uneven portion of the rod engages with the first uneven portion. Locking member.

2. the first uneven portion is formed on the opposite side of the first hole as viewed from a virtual center axis of the first hole, the second concave-convex portion is formed on the insertion direction side of the third hole when viewed from a virtual center axis of the third hole. The locking member according to claim 1 .

3. a fixing member that fixes the position of the rod relative to the button portion in the longitudinal direction of the rod by pressing the button portion in the opposite direction with the rod inserted into the first hole and the third hole; The locking member according to claim 1 or 2.

4. the housing has a fourth hole facing away from the second hole; the fixing member presses the button portion when inserted into the fourth hole; The locking member according to claim 3 .

5. the fixing member has a threaded portion, an inner surface of the housing that defines the fourth hole includes a thread groove into which the screw portion is screwed; The fixing member presses the button portion by screwing the screw portion into the screw groove. The locking member according to claim 4.

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