JP2003056525A - Connection fixture for wire rod or bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection fixture for a wire rod or a bar facilitating the handling and usable without troubles. SOLUTION: A lock member 8 is slidably displaceably supported to a body 2, so as to reciprocate facing to an insertion hole 5. The sliding displacement direction of the lock member 8 is set diagonal with respect to the direction of the insertion hole 5, so that a clamping action end part 8a of the lock member 8 is displaced to the side of an entrance 5a of the insertion hole 5, with the lock member 8 being displaced slidably to the side of the insertion hole 5. A spring 9, energizing the lock member 8 for advancing toward the insertion hole is provided and a guide surface 8b guiding the tip of the wire rod 1 inserted into the insertion hole 5 to a space between the clamping action end part 8a of the lock member 8 and the inner wall of the insertion hole 5, is formed in the portion of the lock member 8 which is headed toward the insertion hole entrance 5a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting fixture used for connecting various wire rods, rods such as pipes and reinforcing bars to each other or fixing them to a predetermined place.

[0002]

2. Description of the Related Art As a connecting and fixing tool for wire rods, for example, as disclosed in Japanese Patent Laid-Open No. 11-303824,
Inside the body with the insertion hole for the wire to be connected,
By equipping the locking member with the locking action portion at both ends rotatably around the fulcrum, and inserting the wire rod from both ends of the insertion hole, the locking action portion of the locking member and the inner wall of the insertion hole There is a structure in which the wire rod is sandwiched and fixed so as to prevent the wire rod from coming off.

Further, as disclosed in Japanese Patent Application Laid-Open No. 2001-20916, a free roller-shaped locking member having serrations engraved on the outer peripheral surface is incorporated inside a body having a wire rod insertion hole. There is known a structure in which a wire is inserted and urged toward the insertion hole side by a spring, and the wire rod inserted from the insertion hole is clamped and fixed between the locking member and the inner wall of the insertion hole in a retaining state.

[0004]

In the former structure, since the two wire rods are sandwiched by both ends of a common locking member that rotates integrally, the posture of the locking member is restrained by sandwiching one wire rod. Therefore, it is difficult to evenly sandwich and fix both wire rods. Moreover, it is not possible to connect wires having different diameters.

On the other hand, in the latter structure, since the wire rod is independently sandwiched and fixed by the two sets of locking members, it has an advantage that it is easier to handle than the former one. If the wire is inserted randomly, the wire will enter between the locking member and the spring, and the intended clamping and fixing action will not be exerted, or the spring will move from its normal position and move to its original position. There is a risk of failure such as not returning to the above.

The present invention has been made paying attention to such a point, and a connecting fixture for wire rods or rods, which is easy to insert and mount wire rods and which can be used without trouble, is provided. The main purpose is to provide.

[0007]

In order to achieve the above object, the present invention is configured as follows. That is,
According to the first aspect of the present invention, by inserting the linear or rod-shaped connected member into the insertion hole formed in the body, the connected member is prevented from coming off between the inner wall of the insertion hole and the internal locking member. A connecting fixture for wire rods or rods, which is configured to be clamped in a fixed state, wherein the locking member is slidably supported on the body so as to move forward and backward facing the insertion hole, and the locking member is also provided. The sliding displacement direction of the locking member is set obliquely to the direction of the insertion hole so that the clamping action end of the locking member is displaced toward the entrance side of the insertion hole as the sliding displacement of the locking member toward the insertion hole side. , An elastic member for urging the locking member toward the insertion hole is provided, and at the portion of the locking member facing the insertion hole entrance, the tip of the connected member inserted into the insertion hole is attached to the locking member. A guide surface that guides between the clamping action end and the inner wall of the insertion hole Forms wherein the are.

According to the above construction, even if the member to be connected is randomly inserted into the insertion hole, the tip of the member to be connected is guided and moved along the guide surface formed on the engaging member, so that the engaging member is clamped. By being guided between the end portion and the inner wall of the insertion hole and further continuing insertion, the locking member pushed by the connected member slides in the direction of retracting from the insertion hole against the elastic member, and The connecting member is appropriately clamped between the clamping action end of the locking member and the inner wall of the insertion hole. When a force is applied to the connected member in this state in the pull-out direction, the locking member that receives the force toward the entrance side of the insertion hole tends to slide and displace in the direction of further advancing into the insertion hole, and the biting into the connected member further occurs. It becomes stronger and the coming off of the connected member is strongly prevented.

According to a second aspect of the present invention, in the first aspect of the present invention, the body is formed with an opening for inserting a fixing releasing tool for retracting and sliding the locking member against the spring. It is characterized by

According to the above construction, when the member to be connected is pulled out, the fixing release tool is inserted into the opening formed in the body to forcibly retract and displace the locking member against the spring, thereby connecting the member to be connected. It is possible to release the clamped fixation of.

According to a third aspect of the present invention, in the first aspect of the present invention, a pair of insertion holes whose opening directions are opposite to each other are formed at both ends of the body, and the locking member is provided inside and inside each insertion hole. It is characterized by being deployed.

According to the above structure, the two connected members can be connected to each other by inserting and fixing the two connected members in the pair of insertion holes. In this case, since the locking members of the respective insertion holes function independently, even if the diameters of the connected members are different, they are firmly fixed without affecting each other.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the body is provided with a connecting portion for fixing to another object.

According to the above construction, the body can be fixed to the proper place of the structure by fixing the body to the proper place of the structure and inserting and connecting the connected member to the body. In this case, if a single insertion port is formed in the body, one connected member can be connected and fixed to the structure, and if a plurality of insertion ports are formed in the body, 1
One or a plurality of connected members can be connected and fixed to the structure.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a connecting fixture A configured to connect two wire rods (members to be connected) 1. 3 is a perspective view of the disassembled connecting and fixing tool, FIG. 4 is an exploded perspective view of constituent members, FIG. 5 is a vertical sectional side view of the connecting and fixing tool, and FIG. 6 is a sectional view taken along the line aa in FIG. .

As shown in FIGS. 1 and 2, the body 2 of the connecting fixture A comprises a block-shaped inner body 3 having a pair of flat side surfaces, and a cylindrical outer body 4 which is externally fitted and fixed to the block-shaped inner body 3. A pair of insertion holes 5 penetrating both ends of the body 2 are formed in the opposing joint surfaces of the bodies 3 and 4, respectively. Then, as shown in FIGS. 3 and 4, on both side surfaces of the inner body 3, a square groove 6 forming the insertion hole 5 and a diamond-shaped concave portion 7 facing the square groove 6 are formed. A locking member 8 for fixing the wire rod and a spring 9 are incorporated in 7. Although not shown, the two sets of the rectangular groove 6 and the recessed portion 7 formed on both side surfaces of the inner body 3 are formed in a vertically inverted posture.

The locking member 8 is formed by the inclined surface 7s of the recess 7 facing each other.
It is slidably displaced along and inserted into and supported by the insertion hole 5 so that it is displaced toward the inlet 5a side of the insertion hole 5 as the locking member 8 advances toward the insertion hole 5. It has become. Further, a sandwiching action end portion 8 a having saw-tooth-shaped irregularities is formed on an end side of the locking member 8 facing the insertion hole 5, and one end portion of the locking member 8 is provided with the insertion hole 5. The facing guide surface 8b is formed to be inclined.

The spring 9 is formed by bending a leaf spring material and is mounted between the bottom of the recess 7 and the locking member 8.
The elastic restoring force urges the locking member 8 to slide toward the insertion hole 5. The spring 9 corresponds to the elastic member in the present invention.

The connecting fixture A of this embodiment is constructed as described above, and when the wire rod 1 is not inserted,
As shown in FIG. 5 and FIG. 6, the holding member 8 is in a state in which the clamping action end portion 8a enters the insertion hole 5 and the guide surface 8b faces the entrance 5a of the insertion hole 5.

In this state, when the wire rod 1 is inserted into the insertion hole 5, the tip of the wire rod 1 is guided along the guide surface 8b of the locking member 8 as shown in FIG. It is guided between the inner wall of the hole 5. By continuing the insertion,
As shown in FIGS. 8 and 9, the locking member 8 pushed by the wire rod 1
Is slid and displaced in the direction of retracting from the insertion hole 5 against the spring 9, and the wire rod 1 is clamped between the clamping action end portion 8a of the locking member 8 and the inner wall of the insertion hole 5.

In this state, when a force is applied to the wire rod 1 in the pull-out direction, the locking member 8 which receives a force toward the inlet 5a side of the insertion hole 5 tends to be slid and displaced in a direction to further advance into the insertion hole 5, The bite into the wire rod 1 becomes stronger, and the wire rod 1 is strongly prevented from coming out.
In this way, the two wire rods 1 can be connected by inserting and fixing the wire rods 1 from the opposite sides into the pair of insertion holes 5.

As shown in FIGS. 1 and 10, the outer body 4 of the body 1 is formed with a vertically elongated hole-shaped opening 10 which obliquely faces the locking member 8 provided therein. By inserting a fixing release tool 11 such as a thin rod from 10 and forcibly retracting the locking member 8 against the spring 9, the wire rod clamping action by the locking member 8 is released, and the wire rod 1 is inserted. It can be extracted from the hole 5 to the inlet 5a side.

FIG. 11 illustrates another embodiment of the present invention. In this example, a flange-shaped connecting portion 12 is formed at an end portion of an outer body 4 that constitutes the body 2, and the connecting portion 12 is used to connect and fix the body 2 to a structure 13 or the like with screws 14 or the like. Then, by inserting and connecting the wire rod 1, one end of the wire rod 1 can be fixed to a predetermined location such as the structure 13. In this example, in order to fix one wire rod 1, a single insertion hole 5 is formed in the body 2.
Although the locking member 8 is formed by forming the above, when a plurality of wire rods 1 are fixed, a plurality of insertion holes 5 may be formed and the locking member 8 may be installed in each insertion hole 5.

The present invention can also be implemented in the following modes. (1) The inner body 3 may be fitted into the outer body 4 and the locking member 8 and the spring 9 may be attached to each of the inner bodies 3.

(2) The spring 9 is not limited to a leaf spring, and a coil spring or a rubber block spring may be used.

(3) The number of the locking members 8 incorporated in the body 2 having the connecting portion is arbitrary, and the plurality of locking members 8 are incorporated side by side and the direction of the inlet 5a of the insertion hole 5 is made the same. With this, it becomes possible to arrange and fix a plurality of wire rods 1. It is also possible to incorporate a plurality of locking members 8 and to make the direction of the inlet 5a of the insertion hole 5 different.

(4) The position of the opening 10 into which the fixing release tool 11 is inserted can be appropriately changed. For example, the opening is formed so that the locking member 8 easily retracts along the sloped surface 7s of the recess 7. You may provide 10 in the diagonal direction along the slope 7s. Further, in applications where it is not necessary to pull out the wire rod 1 connected to the connecting fixture A, the opening 10 for inserting the fixing release tool 11 may not be provided.

[0028]

As is apparent from the above description, according to the present invention, the following effects can be expected. Claim 1
According to the invention of claim 1, even if the member to be connected is inserted into the insertion hole in a random manner, it can be properly guided and held between the holding action end portion of the locking member and the inner wall of the insertion hole. The member to be connected is inserted between the spring and the spring,
The locking member and the spring will not come off from their proper positions, and a highly reliable connecting fixture that can be handled easily can be obtained. Further, when the tip of the connected member comes into contact with the guide surface and is guided, the locking member moves backward against the urging force of the elastic member, so that the clamping action part of the locking member and the inner wall of the insertion hole. It is possible to set a narrow interval between
In other words, the same connecting fixture can be used to accommodate connected members of various diameters.

According to the second aspect of the present invention, it is possible to easily release the sandwiched fixing of the member to be connected and pull out the member to be connected from the connecting fixture.

According to the invention of claim 3, the effect of the invention of claim 1 is brought about, and two members to be connected can be easily connected via a connecting fixture. Further, it is possible to easily connect the connected members having different diameters.

According to the invention of claim 4, in addition to the effect of the invention of claim 1, it can be effectively utilized when fixing the member to be connected to a predetermined place such as a structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a connecting fixture in a wire rod connected state.

FIG. 2 is a perspective view of a connecting fixture.

FIG. 3 is a perspective view of a disassembled connecting fixture.

FIG. 4 is an exploded perspective view of constituent members.

FIG. 5 is a vertical sectional side view of the connecting fixture.

6 is a sectional view taken along line aa in FIG.

FIG. 7 is a vertical sectional side view showing an initial state of insertion.

FIG. 8 is a vertical cross-sectional side view showing a connected and fixed state.

9 is a sectional view taken along line bb in FIG.

10 is a sectional view taken along line cc in FIG.

FIG. 11 is a vertical cross-sectional side view showing a connecting fixture according to another embodiment.

[Explanation of symbols]

1 Connected member (wire) 2 body 5 insertion holes 5a entrance 8 locking member 8a clamping action end 8b Guideway 9 springs 10 openings 11 Fixing release tool 12 Connection

Claims (4)

[Claims] 1. An inner wall of an insertion hole is formed by inserting a linear or rod-shaped connected member into the insertion hole formed in the body.
A connecting fixture for a wire rod or a rod configured to sandwich and fix a member to be connected between an internal locking member and a retaining member, the locking member moving forward and backward facing the insertion hole. Is supported by the body so as to be slidable, and the holding member of the locking member is displaced toward the inlet side of the insertion hole as the locking member slides toward the insertion hole side. The slide displacement direction is set obliquely to the direction of the insertion hole, and an elastic member that biases the locking member toward the insertion hole is installed. A connecting fixture for wire rods or rods, characterized in that a guide surface is formed for guiding the tip of the connected member inserted into the space between the clamping action end of the locking member and the inner wall of the insertion hole. 2. The connection fixing tool according to claim 1, wherein the body is formed with an opening for inserting a fixing release tool for retracting and sliding the locking member against a spring. A connecting fixture for wire rods or rods. 3. The connecting fixture according to claim 1, wherein a pair of the insertion holes whose opening directions are opposite to each other are formed at both ends of the body, and the locking member is provided inside the insertion holes. A connecting fixture for wire rods or rods, which is characterized by being deployed. 4. The connecting fixture according to any one of claims 1 to 3, wherein the body is provided with a connecting portion for fixing to another object. Fixture.