JP2006220207A - Tying head with clamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reasonable tying head with a clamp constructed with a tying condition maintaining function and a clamping function combined in a compact manner. <P>SOLUTION: The tying head with the clamp comprises a supporting column part 7 to be inserted into a mounting hole 3 of a panel plate 2, a supporting part 6 to be applied to a portion 2a around the mounting hole 3, a pair of engaging pieces 8, 8 formed on the side wall of the supporting column part 7, and a band insertion hole 5 vertically passing through the supporting column part 7. In the insertion hole 5, an engaging pawl 11 is cantilevered and supported which has an engaging protruded portion 11a engageable with an engaging recessed portion 4a of a tying band B. The engaging pawl 11 is positioned on the supporting column part 11 so that the engaging protruded portion 11a at the most front end of the engaging pawl 11 is arranged at a position from the front end of the supporting column part 7 closer to the base end side by a distance L equivalent to a length range of about 1.5 times or more a pitch Yp between adjacent mountain portions 4b each formed between adjacent engaging recessed portions 4a, 4b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a bundling head for maintaining a bundling band in a tightened state surrounding a wire harness or a tube group, and a mounting hole formed in a fastening object such as a panel plate The present invention relates to a bundling head with a clamp having a clamp for being inserted into and locked in.

  As shown in FIG. 2, this type of binding head with a clamp is formed such that a support column 7 is inserted into a mounting hole 3 formed in a fastening object 2 and extends from the outer periphery of the upper end of the support column 7 to the side. The support portion 6 that covers the peripheral portion 2 a of the mounting hole 3 and the outer peripheral portion of the support column portion 7, and sandwiches the peripheral portion 2 a of the mounting hole 3 in the fastening target 2 by cooperation with the support portion 6. And a insertion portion 5 for inserting a binding band that is formed so as to penetrate from the base end side that is the support portion side to the distal end side of the support portion 7. . As an example of such a configuration, a binding head with a clamp disclosed in Patent Document 1 is known.

  Patent Document 1 discloses that both ends of a binding band that surrounds the object to be bound by being bent on a loop are passed through insertion holes formed in a support column, and both ends are inserted into the insertion holes. In this case, it is configured such that the tension state of the binding band is maintained by restraining the support band portion (restraint portion). In this way, the bundling state maintaining function and the clamping function are compactly integrated into a compact bundling head with a clamp to lock and fix the bundling object such as a wire harness to the fastening target in a bundled state. This can be realized with extremely compact parts.

  However, in the above-mentioned Patent Document 1, there is almost no description of a specific configuration in which the end portion of the binding band is locked to the support column portion in the insertion hole. In the specification of Patent Document 1, the flat band plate-shaped band is inserted and restrained by punching, or the unevenness formed on the surface of the band and the reverse formed on the inner wall surface of the support column. There is only a statement that it is impossible to move the band back by the pawl, but those drawings are not drawn. Therefore, from the thing of patent document 1, it only stops disclosing the technical thought regarding "the state which tied the binding band to the support | pillar part, and latches the binding band to the support | pillar part", and it is unclear how to constitute. It is a thing.

That is, although the clamping function is disclosed in Patent Document 1, it should be noted that the configuration for performing the binding state maintaining function has not yet been disclosed, and eventually the binding state maintaining function. The binding head with the clamp, in which both the clamping function and the clamping function are compactly integrated, has not been completed.
Japanese Utility Model Publication No.59-10464

  It is an object of the present invention to clearly realize a configuration in which a binding band is locked inside an insertion hole of a support column, thereby providing a binding head with a clamp having various advantages, that is, a function of maintaining a binding state and a clamping function. And provide a reasonable binding head with a clamp that is compactly integrated.

According to the first aspect of the present invention, in the bundling head with a clamp, the column portion 7 inserted into the attachment hole 3 formed in the fastening target 2 and the upper end outer peripheral portion of the column portion 7 are formed to expand laterally. A support portion 6 that covers the peripheral portion 2 a of the mounting hole 3 and an outer peripheral portion of the support column 7, and the peripheral portion 2 a of the mounting hole 3 in the fastening target 2 by cooperation with the support portion 7. A clamping portion 8 for sandwiching the support band, and a through-hole 5 for inserting a binding band formed by penetrating the support portion 7 from the base end side serving as the support portion to the distal end side of the support portion 7; Have
On the side walls 5A and 5B of the insertion hole 5, there are engagement protrusions 11a that are freely engageable by entering into the engagement recesses 4a formed on the surface of the binding band B inserted through the insertion hole 5. The engagement claw 11 formed on the cantilever is supported so as to protrude from the proximal end side toward the distal end side in order to prevent the binding band B from moving in the direction from the distal end side toward the proximal end side. As
The engagement protrusion 11a on the foremost side of the engagement claw 11 has a pitch Yp of about 1.5 between adjacent ones of the crests 4b formed between the adjacent engagement recesses 4a, 4a. The engagement claw 11 is positioned with respect to the support column 11 so as to be disposed at a position close to the base end side from the distal end of the support column 7 by a distance L corresponding to a length range equal to or more than doubled. It is characterized by being.

  The invention according to claim 2 is the binding head with a clamp according to claim 1, wherein the distance L is about 1.5 times or more of the pitch Yp and about 3.0 times or less of the pitch Yp. It is characterized by being set to a range.

  The invention according to claim 3 is the binding head with clamp according to claim 1 or 2, wherein the binding band B inserted into the insertion hole 5 is provided on the proximal end side of the insertion hole 5 with the engaging claw 11. A guide portion 16 for guiding and guiding to a normal position with respect to is formed.

  The invention according to claim 4 is a fastening state in which the fastening object 2 is clamped by the clamp part 8 and the support part 6 in the binding head with a clamp according to any one of claims 1 to 3. Are characterized in that the positions of the base portion 11t of the engaging claw 11 and the mounting hole 3 in the penetration direction of the insertion hole 5 are the same or substantially the same. .

  The invention according to claim 5 is the binding head with a clamp according to any one of claims 1 to 4, wherein the support portion 6 is a portion around the mounting hole 3 between the support portion 6 and the clamp portion 8. 2a is formed so as to be elastically displaceable in the insertion direction of the insertion hole 5, so that the central region 6A of the support portion 6 in plan view is thicker than the surrounding portion 6B. And the position of the end 6a of the thick wall portion 6A is closer to the laterally outer side than the boundary portion s between the support portion 6 and the support column portion 7 on the distal end side. Is.

The invention according to claim 6 is the binding head with a clamp according to any one of claims 1 to 5, wherein the clamp portion 8 is cantilevered on both sides of the front end portion of the column portion 7. It is composed of a pair of engagement pieces that extend toward the support portion 6 in the state and are formed with an engagement step portion 9 that can be engaged with the peripheral portion 2a of the mounting hole 3 outside the tip portion. ,
When the support column 7 is inserted into the mounting hole 3, the pair of engaging pieces 8, 8 is elastically deformed inward by sliding contact with the mounting hole surrounding portion 2a, and the engaging stepped portion is formed. 9 is engaged with the attachment hole peripheral portion 2a of the fixing object 2, and a fixing state is achieved in which the fixing object 2 is sandwiched between the pair of engaging pieces 8, 8 and the support portion 6. It is comprised so that it may be comprised.

  According to a seventh aspect of the present invention, in the binding head with clamp according to the sixth aspect, the side walls 7c and 7d of the support column 7 have a meat for promoting elastic deformation of the engagement piece 8 inward. The shaving part 13 is recessed and formed.

  The invention according to claim 8 is the binding head with clamp according to claim 6 or 7, wherein each of the pair of side walls 7c and 7d on the front and rear sides or the left and right side walls 7a to 7d of the front and rear side walls 7a to 7d of the support column 7 is provided. The engagement claw 11 is supported inside the side walls 7a and 7b where the engagement piece 8 is formed and the engagement piece 8 is not formed.

  The invention according to a ninth aspect is the binding head with a clamp according to any one of the first to eighth aspects, wherein the insertion holes 5 are stacked in a back-to-back state in which the respective engagement concave portions 4a face outward. The binding band B can be inserted, and a pair of the engaging claws 11 that are engaged with the respective engaging recesses 4a are formed.

  According to the first aspect of the present invention, as will be described in detail in the embodiment, the most distal side of the engaging convex portion of the locking claw provided in the column portion and the engaging concave portion of the binding portion of the binding band Position the engagement claw with respect to the support column so that there is a support column that is approximately 1.5 times longer than the band crest pitch of the binding band at the tip side of the engagement point In the occlusal state where the engaging convex portion and the engaging concave portion are engaged regardless of the cutting position of the binding band, one or more surplus band peak portions can be secured. In other words, in order to obtain sufficient tensile strength of the binding band, one or more surplus band crests are required, and in order to satisfy this whether the cutting position is a crest or a crevice, The distance between the engagement convex part on the most advanced side of the joint claw and the tip of the column part is about 1.5 times or more the pitch between the adjacent parts of the crests formed between the adjacent engagement concave parts. What should I do?

  As a result, one or more surplus band crests are secured regardless of the cutting position of the binding band, reliability is added to the function of locking and holding the binding band by the engaging claws, and sufficient tension is provided. Thus, it is possible to provide a bundling head with a clamp for bundling a bundling object.

  According to the invention of claim 2, the distance between the engagement convex portion on the most distal side of the engagement claw and the tip of the support column is about 1.5 times to about 3.0 times the peak pitch of the binding band. By setting to the range, it is possible to provide a bundling head with a clamp that can achieve the above-described effect according to the first aspect of the present invention, while avoiding an increase in the length of the support column and making it compact.

  According to the invention of claim 3, the substantial vertical width of the insertion hole is a value slightly larger than the total thickness of the pair of band members, and the binding band can be smoothly inserted into the insertion hole, and the insertion hole can be inserted without rattling. There is an advantage that a good engagement operation as expected between the bundling band and the engagement claw can be obtained by a simple structural device such that the guide portion is provided.

  According to the fourth aspect of the present invention, it is possible to secure the advantage that it is possible to guard or reinforce the root portion of the engaging claw, that is, the portion that is susceptible to stress concentration at the cross-section changing portion, at the peripheral portion of the mounting hole. It is possible to provide a bundling head with a clamp that can be realized economically without adding a member by a structural device that uses the object well.

  According to the invention of claim 5, although it will be described in detail in the embodiment, stress concentration and bending displacement related to bending to the non-existing side of the object to be fixed in the peripheral portion of the support portion are less likely to occur, and the object to be fixed Can be obtained more stably, that is, the elastic clamping state of the object to be fastened by the support portion and the clamp portion.

  According to the sixth aspect of the present invention, the clamp portion is constituted by the pair of engagement pieces, and the binding head with the clamp is stopped by the engagement between the engagement step portion at the distal end of the engagement piece and the peripheral portion of the attachment hole. It can be stably locked and fixed to the attachment hole to be attached.

  According to the seventh aspect of the present invention, the inner end portion of the engagement piece can enter the inner side of the outline of the side wall of the support column, so that the movable range of the swing movement of the engagement piece can be increased inward. Thereby, while suppressing the size of the mounting hole, a sufficient movement area of the engaging piece can be taken, and a convenient fixing means to the fixing object by the engaging action of the engaging piece is provided. Therefore, it is possible to provide a bundling head with a clamp that can be realized without causing a reduction in size and is excellent in usability.

  According to the invention of claim 8, although described in detail in the embodiment, since the pair of engaging pieces and the pair of engaging claws are distributed to the front and rear and the left and right of the support column, the portion below the support portion The necessary functions (the locking function to the mounting hole and the binding function of the binding band) can be realized while achieving compactness.

  According to the ninth aspect of the present invention, since the pair of binding bands are inserted through the insertion holes in a back-to-back state, it is impossible to distribute the engaging claws for engaging the respective locking portions on both sides of the binding l band pair. In addition, a bundling head with a clamp that can be arranged compactly on the column and can rationally configure a fastening function to a fastening target and a bundling holding function of a bundling band has been realized.

  Hereinafter, embodiments of a binding head with a clamp according to the present invention will be described with reference to the drawings. 1 is a perspective view of a binding fixture with a binding band engaged with a binding head with a clamp, FIG. 2 is a cross-sectional view of the binding fixture in a direction along the longitudinal direction of the wire harness, and FIG. 3 is a longitudinal direction of the wire harness. 4 is a cross-sectional view of the binding fixture in a direction perpendicular to the cross-sectional view, FIG. 4 is an enlarged cross-sectional view of the main part showing the engagement state between the binding head with clamp and the panel plate, and FIGS. 5 to 9 are cross-sectional views of the single binding head with clamp. It is a surface view, a front view and a side view, a bottom view, a longitudinal sectional view, a perspective view and a partial plan view. FIG. 10 is a cross-sectional view of the main part showing an inconvenient situation example when cutting the surplus band, and FIG. 11 is a cross-sectional view of the main part showing the engagement state between the engaging claw and the band end after the inconvenient situation of FIG. 12 is an enlarged cross-sectional view of the main part showing the positional relationship between the engaging claw and the column part, and FIGS. 13 and 14 are cross-sectional views of the main part showing other examples.

[Example 1]
The binding head with clamp according to the first embodiment is configured as a binding head A with clamp in the binding fixture 1 for cooperating with the binding band B to clamp the wire harness W to the binding and fastening object 2. That is, the binding head A with a clamp and the binding band B inserted and locked thereto are used to bind the wire harness W to the panel panel 2 of an automobile, which is an example of an object to be fixed, so that the binding can be locked. A tool 1 is configured.

  1 to 3 show a state in which the wire harness W is bound and locked to the panel plate 2 using the binding fixture 1, and the binding fixture 1 is locked to the mounting hole 3 of the panel plate. It is composed of two parts: a binding head A with a clamp to be fixed and a binding band B that is locked and fixed to the binding head A with a clamp while surrounding the wire harness W. That is, the wire harness W composed of a group of a plurality of electric wires r is locked and fixed to the binding head A with clamp in a state where the wire harness W is surrounded by the binding band B and tightened, and the binding fixture 1 with the wire harness W is This is a structure that is locked and fixed to the panel plate 2 by the binding head A with a clamp.

  As shown in FIGS. 1 to 3, the binding band B is a recess 4 a that is recessedly formed on one of the front and back surfaces of a band member 4 made of a synthetic resin material having flexibility such as nylon and polypropylene. And the crest part 4b formed between the adjacent recessed parts 4a is a thing of the structure in which the latching | locking part 4K formed by alternately and continuously forming was formed. Although this binding band is not shown in the figure, for example, a band supplied by unwinding from a band reel wound around a rotating reel is cut into an appropriate length and used.

  As shown in FIGS. 5 to 7, the binding head A with clamp is an oval shape formed in the panel plate (an example of an object to be fixed) 2 with an insertion hole 5 for inserting the binding band B. The support portion 6 that covers the peripheral portion 2a of the mounting hole 3, the support portion 7 that protrudes from the support portion 6 and is inserted into the attachment hole 3, and the both sides of the lower end portion of the support portion 7 are cantilevered. A pair of engaging pieces 8 that extend toward the support portion 6 in a supported state and that are formed with an engaging step portion 9 that is engageable with the peripheral portion 2a of the mounting hole 3 outside the upper end portion; 8 and is made of a flexible synthetic resin material such as nylon or polypropylene. When the support column 7 is inserted into the mounting hole 3, the pair of engaging pieces 8 and 8 are elastically deformed inward by sliding contact with the inner peripheral surface 3n of the mounting hole 3 (see FIG. 4). ) When the engagement step 9 is engaged with the mounting hole surrounding portion 2a of the panel plate 2, the panel plate 2 is elastically held between the pair of engagement pieces 8, 8 and the support portion 6. Configured to be brought.

  The support portion 6 is formed in a skirt shape having an oval shape in plan view according to the shape of the mounting hole 3, and has a thick central region 6 </ b> A continuous to the upper end portion of the support column portion 7 and its surroundings. And a skirt portion (an example of a peripheral portion) 6B. Then, as shown in FIGS. 4 and 8, in order to urge the peripheral portion 2a of the mounting hole 3 between the pair of left and right engaging pieces (an example of a clamp portion) 8, 8, the vertical direction (insertion hole) 3), the central region 6A of the support portion 6 in plan view is set to a thick portion thicker than the surrounding peripheral portion, and the thick portion The position of the end 6a of 6A is closer to the laterally outer side than the boundary portion s with the support column 7 on the lower side (front end side) of the support portion 6. The advantages of this configuration are as follows.

  The skirt portion 6B has both elastic force and strength as a shape in which the outer peripheral portion is slightly lowered and the heel is turned down in order to elastically hold the panel plate 2 together with the pair of engagement pieces 8 and 8. The hoop tension effect is exhibited. Despite such a shape, the skirt portion 6B, which is a peripheral portion, is moved upward as indicated by a virtual line in FIG. The position of the boundary portion s is moved closer to the inner side than the end 6a of the thick portion 6A so that the inconvenience of so-called “turning over” is less likely to occur. As a result, stress concentration related to the upward bending of the skirt portion 6B is less likely to occur, and it is difficult to bend upward, and a favorable elastic clamping state of the panel plate 2 can be obtained more stably. Yes.

  The strut portion 7 is a substantially cylindrical portion through which the insertion holes 5 through which the both end portions 4t and 4t of the band member 4 are inserted in a back-to-back state are vertically penetrated, and the front and rear inner walls 5A to 5D of the insertion holes 5 are formed. Each of the front inner side wall 5A and the rear inner side wall 5C has an engagement convex portion 11a that can be freely engaged by entering the engagement concave portion 4a formed on the surface of each band end portion 4t, 4t. The engaging claw 11 formed on the portion is cantilevered so as to protrude obliquely from the proximal end side to the distal end side of the column portion 7. That is, the engaging claw 11 is integrally formed in a state of being continuous with the thick column portion 7A at the boundary between the upper thick column portion 7A and the lower thin column portion 7B. The joint convex part 11a and the engagement trough part 11b between them are formed.

  When the binding band B tries to move downward in the direction from the upper side (base end side) to the lower side (tip end side) of the support column portion 7 due to the shape of the engaging claw 11 and the cantilever support structure, The engaging claw 11 is elastically displaced backward by a swinging movement with the base portion 11t with respect to the column portion 7 as a virtual center, and allows the binding band B to move downward. However, when the binding band B is about to move in the direction from the lower side to the upper side, the engaging claw 11 will bite into the recess 4a by the upward swinging movement with the root portion 11t as the virtual center. (So-called self-locking phenomenon), and the binding band B is moved upward (moving in the direction from the distal end side to the proximal end side of the binding band), that is, the insertion hole 5 is pulled out from the support portion 6 side. It is blocked.

  Next, as shown in FIGS. 2, 4, and 6, a pair of engagement pieces 8 that are clamp parts are formed in a cantilevered support state that protrudes obliquely upward from the left and right of the lower end part of the column part 7. In addition, it is possible to swing and deform left and right around the root portion 8a of the lower end portion, and an engaging step portion 9 including first to third step portions 9A to 9C is formed outside the upper end portion. Each of the step portions 9A to 9C is composed of a corner portion having a vertical wall 9t and a horizontal wall 9y, and each vertical wall 9t is a curved surface having an arcuate plan view shape that matches the shape of the mounting hole 3. Is formed. Further, the two-sided sandwiching angle θ between the vertical wall 9t and the horizontal wall 9y is set to 95 degrees.

  More specifically, each step portion 9A to 9C (engagement step portion 9) includes a vertical wall 9t along the inner peripheral surface 3n of the mounting hole 3 in the panel plate 2 and a peripheral portion 2a of the mounting hole 3 in the panel plate 2. And a lateral wall 9y along the outer surface (lower surface) of the inner wall, and in the fastened state (the state shown in FIGS. 2 and 4) inserted into the mounting hole 3, the gap between the lateral wall 9y and the outer surface 2A is sandwiched. The engaging step 9 is formed so that the angle α exists at a slight value. Here, the included angle α is set to 4 to 10 degrees, preferably 5 to 6 degrees. In the first embodiment, the two-sided sandwiching angle θ formed by the vertical wall 9t and the horizontal wall 9y is set to about 95 degrees. That is, the angle formed by the inner peripheral surface 3n of the mounting hole 3 and the lower outer surface 2A of the panel plate 2 is a right angle (90 degrees or almost 90 degrees), and is formed by the vertical wall 9t and the horizontal wall 9y. The two-side sandwich angle (angle) is set to a value (95 to 96 degrees) obtained by adding the gap sandwich angle α to a right angle (90 degrees or almost 90 degrees).

  The first to third step portions 9A to 9C are selectively used depending on the thickness of the panel plate 2. In the case of the thin panel plate 2 having a small thickness, as shown in FIG. When the hole 3 is engaged with the first step portion 9A and the thick panel board 2 is thick, the mounting hole 3 is engaged with the third step portion 9C as shown in FIG. 14 (b). To come. And when the thickness of the panel board 2 is standard thickness (medium thickness), as shown in FIG.2 and FIG.4, the attachment hole 3 engages with the 2nd step part 9B. Regardless of the thickness, the size of the mounting hole 3 is the same, and the selection of the first to third step portions 9A to 9C is adjusted depending on the swing displacement of the engagement piece 8. The engagement piece 8 and the engagement step portion 9 are formed so that the clearance angle α is 5 degrees regardless of the plate thickness.

Next, the positional relationship of the engaging claw 11 with respect to the column portion 7 will be described. As shown in FIGS. 3, 5, and 12, the engagement convex portion 11 a on the most distal side (lowermost end side) of the engagement claw is adjacent to the peak portion 4 b in the locking portion 4 </ b> K of the band member 4. The distance between the lower end (front end) and the upper end side (base end side) of the support column 7 is set at a distance corresponding to a length range that is approximately 1.5 times or more of the pitch. The claw 11 is positioned with respect to the column portion 7. Specifically, the peak pitch, which is the pitch between the adjacent peak portions 4b of the locking portion 4K, is Yp, and the engagement center position 12 of the foremost engagement convex portion 11a (the concave portion 4a of the band member 4). (The position corresponding to the vertical center of the vertical axis) and the lower end of the support column 7 is L,
L ≧ 1.5Yp …… (1)
It is designed so that

More preferably, the engagement protrusion 11a on the most distal side (bottom end side) of the engagement claw is about 1.5 times or more the pitch between adjacent ones of the crests 4b in the locking portion 4K of the band member 4. And when it is set to be arranged at a position close to the upper end side (base end side) from the lower end (tip end) of the column part 7 by a distance corresponding to a length range of about 3.0 times or less. good. That is,
L = YP × (1.5 to 3.0) (2)
It is designed so that In FIG. 12 and the like, it is set to approximately “L = 2.7 Yp”. The above formulas (1) and (2) are for the following reason.

  From the experimental data, the cutting edge 4K has a sufficient proof strength when a strong pulling force is applied to the binding band B in the occlusal state where the engaging claw 11 is engaged with the recess 4a of the band member 4. It has been found that the minimum requirement is that at least one peak 4b exists on the tip side of the recess 4a into which the side engaging protrusion 11a is engaged. In other words, from the viewpoint of the tensile strength of the binding band B, it is good that the remaining peak portion 4b is large (one or more peaks), but if it increases, the lower end position of the column portion 7 is too low, that is, the column portion 7 There is a disadvantage that the length becomes unnecessarily long. Therefore, if the surplus mountain part 4b existing below the engagement convex part 11a on the most front side is set to be 1 to 2 mountains, it is advantageous that both sufficient tensile strength and compactness can be achieved. .

  Accordingly, the column portion 7 including the engaging claw 11 is set so that the remaining peak portion 4b is 1-2 in design, that is, the vertical distance L = Yp × (1-2). It seems good, but it has been found that doing so can cause inconvenience. The binding band B inserted through the insertion hole 5 is cut at the lower end line of the support column 7 by a dedicated cutting blade 20 in a state where the binding band B is tightened by a tightening device (not shown). The actual situation is that the thickness of the harness W and the set tightening force of the binding band are not determined due to the recess 4a or the peak 4b. In the band member 4, the pitch between the adjacent peak portions 4 b and the pitch between the adjacent valley portions 4 a are the same (= Yp) (see FIG. 12).

  Therefore, as an example, in order to leave one surplus mountain portion 4b, as shown in FIG. 10 and FIG. 11, in a situation where L = Yp is designed, the cutting portion of the band member 4 by the cutting blade 20 is the mountain portion 4a. In this case, the engaging convex portion 11a of the engaging claw 11 is in a positional relationship on the peak portion 4b of the band member 4 (in this positional relationship, as shown in FIG. It is slightly swung to the thin column part 7B side). Therefore, at the same time when the band member 4 is cut at the peak portion 4a, each band end portion 4t is pulled upward by the tension of the binding, and as shown in FIG. 11, the engagement convex portion 11a of the engagement claw 11 is cut. It engages with the recessed part 4a adjacent to the lower part at the time (state of FIG. 10). That is, the binding band B is displaced upward by a half mountain (Yp / 2) of the mountain part 4b.

  Accordingly, when the distance L between the upper and lower sides is set to the length corresponding to the pitch Yp of one mountain portion 4b, the band end portion 4t is cut at the peak portion 4b by the above-described shift movement at the time of cutting, and thereafter In the state where the engaging claw 11 and the binding band B are engaged with each other, there is a possibility that the surplus mountain portion 4b remains only a half mountain and a sufficient tensile strength cannot be obtained (see FIG. 11). In order to avoid this inconvenient situation, it is calculated backward from the situation where the engaging projection 11a of the engaging claw 11 is located at the peak 4b of the band member 4, and 1.5 peaks (1.5 pitch) of the peak 4b. It can be seen that a distance equal to or greater than (1.5 Yp) may be set as the vertical distance L (L ≧ 1.5 Yp). However, depending on the shape of the crest 4b (trapezoidal teeth, triangular teeth, etc.), for example, there is a possibility of functioning even at 1.4 Yp, so the expression “about 1.5 Yp” is used. And in order to avoid the lengthening of the support | pillar part 7 and simplification of the dimension setting of the distance L between upper and lower sides, it is actually good to design as 1.5Yp <= L <= 3.0Yp.

  As shown in FIG. 12, if the pitch between adjacent ones of the peaks 4b is Yp, the engagement center 12 of the engagement projection 11a on the most distal side and the engagement projection 11a on the engagement center 11a are provided. The distance from the engagement center 12 is Yp equal to the peak pitch, and the recess pitch between the engagement recesses 4a of the locking portion K is also Yp. As the shape of the engaging convex portion 11a in the engaging claw 11, it is sufficient that there is a stop surface 22 that comes into contact with the lower inclined side 21 of the engaging concave portion 4a, and a shape that exactly fits into the engaging concave portion 4a is necessary. It doesn't mean.

  As shown in FIGS. 4, 6, and 8, on the upper portions of the left and right outer walls 7 c and 7 d in the support column 7, a shaving for accelerating the inward elastic deformation of the engagement piece 8. The part 13 is recessed. That is, as the support column 7 is inserted into the insertion hole 3, the left and right engagement pieces 8, 8 are in sliding contact with the inner peripheral surface 3 n and elastically deformed inward, but the engagement piece 8 is required to pass through the insertion hole 3. Is in the most inwardly deformed state (the state indicated by the phantom line in FIG. 4), the tip inner portion 14 enters the shaving portion 13.

  That is, the movable range of the swing movement of the engagement piece 8 is increased inward so that the tip inner portion 14 can temporarily enter the inner side of the outer lines of the left and right side walls 7c, 7d of the support column 7. As shown in phantom lines in FIG. 14, this action is achieved when the panel plate 2 is thick even when the panel plate 2 is thin [see FIG. 14 (a)] [see FIG. 14 (b)]. But it works as well. However, in order to compensate for the strength reduction of the base portion of the column portion 7 due to the formation of the meat cutting portion 13, as shown in FIGS. 6 and 7, the meat cutting on the left and upper portions of the right side walls 7c and 7d of the column portion 7 is performed. A reinforcing wall 15 is formed integrally with the front side or rear side portion of the portion 13 so as to project laterally in a triangular shape, and the reinforcement strength of the column portion 7 itself and the strengthening strength of the support portion 6 are enhanced. Is planned.

  By having such a configuration, a large engagement step portion 9 having three step portions, ie, first to third step portions 9A to 9C, is provided at the tip, and the versatile and convenient engagement piece 8 is obtained. However, the presence of the shaving portion 13 increases the inwardly movable swinging region so that the mounting hole 3 need not be enlarged as much as possible. In other words, while following the mounting hole 3 having a prescribed shape and size such as an oval shape, the number of engagement steps of the engagement step portion 9 can be increased and fixed according to various thicknesses of the panel plate 2. A bundling head A with a clamp that is excellent in usability can be realized.

  Next, the positional relationship between the engagement piece 8 and the engagement claw 11 will be described. As shown in FIGS. 7 to 9, engaging claws are engaged with the inner sides of the front and rear side walls 7a and 7b, that is, the inner front side wall 5A and the inner rear side wall 5B, of the front and rear left and right side walls (outer walls) 7a to 7d. 11 and the engagement piece 8 is supported by the left and right side walls 7c and 7d. That is, since the pair of engaging pieces 8 and 8 and the pair of engaging claws 11 and 11 are distributed to the front and rear and the left and right of the support column 7, while the size of the portion below the support 6 is reduced, Necessary functions (locking function to the mounting hole 3 and binding function of the binding band B) can be realized. And since the pair of engaging pieces 8 and 8 are provided in the longitudinal direction side of the oval mounting hole 3, the binding head A with a clamp is formed in comparison with the case where the front and rear side walls 7a and 7b are provided on the short side. There is also an advantage that the panel plate 2 can be stably engaged and supported with little play.

  As shown in FIGS. 8 and 9, on the proximal end side (supporting portion 6 side) of the insertion hole 5, the binding band B inserted into the insertion hole 5 is guided and guided to a normal position with respect to the engaging claw 11. The guide portion 16 is formed. The lateral width D of the insertion hole 5 through which the band members 4, 4 in the back-to-back state are passed is set to a value slightly larger than the width dimension of the band member 4, and the vertical width E is to secure a swing movement region of the engaging claws 11. In particular, the value is clearly larger than twice the thickness of the band member 4. Therefore, in order to guide the position of the band members 4 and 4 in the longitudinal width direction to an appropriate position where each locking portion 4K is just engaged with the engaging claw 11, the flat portions 4H on both sides of the locking portion 4K, Elongated guide portions 16 adjacent to 4H are formed at the four corners of the insertion hole 5, respectively.

  Due to the total of four guide portions 16, the substantial vertical width F of the insertion hole 5 is slightly larger than the total thickness of the pair of band members 4 and 4, and the binding band B is inserted into the insertion hole 5 without backlash. And maintaining the positional relationship in which the engaging portions 4K of the band members 4 and 4 and the corresponding engaging claws 11 are engaged satisfactorily as expected. In addition, the upper and lower ends of the insertion hole 5 are formed with guide surfaces 17, 18, and 19 for inclined introduction of the band member 4 so as to facilitate the insertion of the band member 4, and the band member 4 can be smoothly inserted. It can be done. These introduction guide surfaces 17, 18, 19 can also be defined as “guide portions” for facilitating the insertion of the support column 7 into the insertion hole 5.

[Example 2]
In the fixed state where the panel plate 2 is clamped by the locking pieces (clamp portions) 8 and 8 and the support portion 6, the one shown in FIG. This is a binding head A with a clamp configured such that the positions (height levels) in the penetration direction of the insertion holes 5 are the same or substantially the same. Even in this case, 1.5Yp ≦ L ≦ 3.0Yp is established between the vertical distance L between the lower end of the engaging claw 11 and the lower end of the support column 7 and the peak portion pitch Yp of the locking portion 4K. In FIG. 13, the front and rear side walls 7A and 7B and the mounting hole 3 of the support column 7 are drawn so as to have a deliberate gap. There is an advantage that it is possible to guard or reinforce the root portion 11t, which is also a portion that is easily subjected to stress concentration at the cross-sectional change portion between the 7A and the thin-walled column portion 7B, with the peripheral portion 2a of the mounting hole 3.

  Various changes can be made to the clamp part, such as one made of a male screw and a nut formed on the outer periphery of the column part 7 in addition to the engagement piece 8. In addition, as a fastening target, various changes such as plates forming bodies of vehicles, agricultural machines, construction machines, etc., frames of industrial machines, and the like can be made.

The perspective view which shows the binding fixture in use condition Sectional front view of the binding fixture of FIG. Sectional side view of the binding fixture of FIG. The enlarged front view which shows the engagement state of an engagement piece and a mounting hole Cross-sectional side view of binding head with clamp The binding head with clamp is shown, (a) is a front view, (b) is a side view. Bottom view of bundling head with clamp Cross-sectional front view of binding head with clamp The bundling head with clamp is shown, (a) is a perspective view, (b) is a plan view of the main part. Action diagram showing band cutting situation with engagement claw on mountain Sectional drawing of the principal part which shows the state which the engagement nail | claw engaged with the recessed part after the cutting condition of FIG. The expanded sectional view of the principal part which shows the engagement state of an engaging claw and a band member Sectional drawing which shows the structure where the base part of an engaging claw is located inside a mounting hole It is an enlarged view of the principal part which shows the engagement state of an engagement piece and a mounting hole, (a) is when the thickness of a panel board is thin, (b) is when the thickness of a panel board is thick

Explanation of symbols

2 Attachment object 2a Surrounding part 3 Mounting hole 4 Band member 4a Engaging concave part 4b Mountain part 5 Insertion hole 5A, 5B Side wall of insertion hole 6 Support part 6A Central area (thick part)
6B Peripheral part 6a End of thick part 7 Column part 7a-7d Side wall 8 Clamp part 9 Engagement step part 11 Engagement claw 11a Engagement convex part 11t Root part 16 Guide part s Boundary part of support part and support part A Bundling head with clamp B Bundling band L Distance between the engagement convex part on the most advanced side and the tip of the column part Yp Mountain part pitch

Claims (9)

A support column that is inserted into a mounting hole formed in a fastening target, a support unit that is formed to extend laterally from the outer periphery of the upper end of the support column, and covers the peripheral part of the mounting hole, and an outer periphery of the support column A clamp portion for sandwiching a peripheral portion of the attachment hole in the fastening object by cooperation with the support portion; and the support portion from the base end side that is the support portion side to the support portion. And a through-hole for binding band insertion formed to penetrate through the distal end side of the
On the side wall of the insertion hole, there is an engagement claw having an engagement projection formed at the tip of the engagement band formed in the engagement recess formed on the surface of the binding band inserted through the insertion hole. In order to prevent movement of the binding band in the direction from the distal end side toward the proximal end side, the binding band is cantilevered so as to protrude from the proximal end side toward the distal end side, and
The length range in which the engagement convexity on the foremost side of the engagement claw is about 1.5 times or more the pitch between the adjacent ones of the crests formed between the adjacent engagement recesses. A binding head with a clamp in which the engaging claw is positioned with respect to the column portion so that the engagement claw is disposed at a position close to the base end portion side from the distal end of the column portion by a distance corresponding to.   2. The bundling head with clamp according to claim 1, wherein the distance is set to a length range of about 1.5 times or more of the pitch and about 3.0 times or less of the pitch.   The clamp according to claim 1 or 2, wherein a guide portion for guiding and guiding a binding band to be inserted into the insertion hole to a normal position with respect to the engagement claw is formed on a proximal end side of the insertion hole. Bundling head.   In the fastened state in which the fastening target is clamped by the clamp part and the support part, the base part of the engaging claw and the attachment hole have the same or substantially the same position in the penetration direction of the insertion hole. The bundling head with a clamp according to any one of claims 1 to 3, wherein the binding head is configured to be.   The support portion is formed so as to be elastically displaceable in the insertion direction of the insertion hole so as to elastically sandwich a peripheral portion of the mounting hole between the support portion and the clamp portion, and the center of the support portion in plan view The region is set to be a thick part thicker than the surrounding peripheral part, and the position of the end of the thick part is laterally outward from the boundary part between the support part and the support part. The bundling head with a clamp according to any one of claims 1 to 4, wherein The clamp part is cantilevered on both sides of the front end part of the support column, and extends toward the support part. The clamp part is engageable with a peripheral part of the mounting hole outside the front end part. Composed of a pair of engaging pieces formed with an engaging stepped portion,
When the support column is inserted into the mounting hole, the pair of engaging pieces elastically deform inward by sliding contact with the mounting hole surrounding portion, and the engaging stepped portion is fixed to the fixing target. 6. The device according to claim 1, wherein the device is engaged with a peripheral portion of the mounting hole so as to provide a fixed state in which the fixed object is sandwiched between the pair of engagement pieces and the support portion. The bundling head with a clamp according to one item.   The bundling head with a clamp according to claim 6, wherein a wall shaving portion for accelerating elastic deformation of the engagement piece inward is formed in the side wall portion of the support column.   The engagement piece is formed on each of the front and rear or the pair of left and right side walls of the front and rear left and right side walls of the support column, and the engagement claw is supported inside the side wall on which the engagement piece is not formed. The bundling head with a clamp according to claim 6 or 7. The insertion holes can be inserted with a pair of binding bands stacked in a back-to-back state with the respective engagement recesses facing outward, and a pair of engagement claws that are individually engaged with the respective engagement recesses The bundling head with a clamp according to any one of claims 1 to 8, wherein:

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