JP5063826B1 - Chained T nut - Google Patents

Abstract

A chained T-nut having a female screw formed with high accuracy is provided.
A plurality of T-nuts arranged in a row and a bridging portion for connecting adjacent T-nuts are integrally formed from a band-shaped metal plate, and both ends of the T-nut are opened. A cylindrical shaft portion 2 provided with an internal thread on the inner surface, a flange portion 5 provided at the peripheral edge of the proximal end opening of the shaft portion 2, and a claw 4 extending from the flange portion 5 to the distal end side of the shaft portion 2. The claw 4 is cut and raised from the outside in the width direction of the belt-shaped metal plate to the inside.
[Selection] Figure 1

Description

  The present invention relates to a chained T-nut in which a plurality of T-nuts are connected in a column.

  Conventionally, a taped T-nut bonded to an adhesive tape in a state where T-nuts are arranged in a row is used (see, for example, Patent Document 1). Since this T-nut is preliminarily aligned on the tape, when driving the T-nut, a simple driving device that does not have an aligner for aligning the T-nut can be used. Have.

  However, taped T-nuts require a process and device for aligning the T-nuts and bonding them to the adhesive tape at the time of production, and the tape is twisted or removed from the T-nuts when packed and shipped. There was an inconvenience that it was expensive and costly.

  On the other hand, a connector having a plurality of terminals is used for wiring of an electric system such as an automobile or a home appliance, and a method of attaching such a connector to a connector while cutting the connected terminals one by one. Is used (see, for example, Patent Document 2).

  Therefore, in view of such technology, the present inventor, when processing a T nut from a metal plate, punches out the T nut leaving a bridging portion between adjacent T nuts to form a plurality of T nuts in a chain shape. I came up with a chained T-nut to be provided and tried to substitute it for the taped T-nut.

JP 2004-17250 A JP 2008-34325 A

  However, in this chain-shaped T-nut, it is necessary to perform female threading of the shaft part in a state where a plurality of T-nuts are connected. It was difficult to do.

  This invention is made | formed in view of the said subject, and aims at provision of the chain | strand-shaped T nut in which the internal thread processing was made | formed accurately.

The invention made in order to solve the above-mentioned problem comprises a plurality of T-nuts arranged in a row integrally formed from a strip-shaped metal plate and a bridging portion for connecting adjacent T-nuts. A cylindrical shaft portion having both ends opened and an internal thread provided on the inner surface, a flange portion provided at the periphery of the proximal end opening of the shaft portion, and a claw extending from the flange portion to the distal end side of the shaft portion And
The claw is raised from the outside to the inside in the width direction of the strip-shaped metal plate (hereinafter, this direction is also referred to as “width direction” in the T-nut and the chain-shaped T-nut). To do.

  As described above, the chain-shaped T-nut of the present invention excludes the claws from the edge in the width direction of the flange portion by the claws being cut and raised from the outside in the width direction of the band-shaped metal plate. When the internal thread is provided on the inner peripheral surface of the shaft, the flange can be fixed by gripping the edge of the flange without the claw from the outside in the width direction, so that the internal thread can be processed with high accuracy. .

In the chain-shaped T-nut according to the present invention, the claw is provided at a position that does not overlap the shaft portion when viewed from the width direction . By doing so, since the internal thread can be processed by sandwiching the outer peripheral surface of the shaft portion from the outside in the width direction, the internal thread can be processed with higher accuracy.

  It is preferable that the chained T-nuts of the present invention are provided in pairs between the flange portions of the adjacent T-nuts. By carrying out like this, it can suppress effectively that a chain | strand-shaped T nut twists.

  In the chain-shaped T-nut of the present invention, it is preferable that the through hole surrounded by the flange portion of the adjacent T-nut and the pair of bridging portions has an elliptical shape, a track shape, and a rounded square shape. By doing so, it is possible to prevent the bridging portion from being bent or twisted at the corner of the through hole, and it is possible to simplify the mold for punching the through hole.

  In the chain-shaped T-nut of the present invention, it is preferable that slits are provided at both end portions in the width direction of the through-holes surrounded by the flange portion and the pair of bridging portions of adjacent T-nuts. Thereby, the said slit part can be opened and the pitch between T nuts can be adjusted.

  It is preferable that the flange portion is formed by raising a claw from an outer peripheral portion of a circular or substantially circular portion punched from the band-shaped metal plate. By carrying out like this, the metal mold | die for forming a flange part can be made into a simple shape.

  The shaft portion may include a diameter-enlarged portion having a larger outer diameter and inner diameter on the proximal end side than the distal end side. By carrying out like this, the said enlarged diameter part can be press-fit in the hole for driving in the T nut provided in the adhering object, and a T nut can be fixed firmly.

  It is preferable that the shaft portion has a caulking scheduled portion that is caulked and fixed to an object to be fixed on the distal end side. By doing so, the T-nut can be firmly fixed to the fixed object.

  It is preferable that the female screw has a deformed portion provided by recessing the outer peripheral surface of the shaft portion from the width direction. By doing so, the bolt screwed into the shaft portion can be engaged with the deformable portion to prevent the bolt from coming off.

  As described above, according to the present invention, it is possible to provide a high-quality chained T-nut in which a female thread is processed with high accuracy in the shaft portion.

(A) top view of chained T-nut according to first embodiment of the present invention, (b) Y-Y cross-sectional view of a type without a caulking planned portion at the shaft tip, and (c) shaft tip It is a YY sectional view taken on the line of a type with a caulking schedule part. (A) And (b) is a sectional view taken along line XX of the chain-shaped T nut shown in FIG. 1 (b), and (c) and (d) are the chain-shaped T shown in FIG. 1 (b). It is a fragmentary perspective view of a nut. FIGS. 1A and 1B are cross-sectional views of the chain-shaped T-nut shown in FIG. 1C, taken along the line XX, and FIGS. 1C and 1D are the chain-shaped T-nut shown in FIG. It is a fragmentary perspective view of a nut. (A) top view of chained T-nut according to second embodiment of the present invention, (b) Y-Y cross-sectional view of a type without a caulking planned portion at the shaft tip, and (c) shaft tip It is a YY sectional view taken on the line of a type with a caulking schedule part. (A) top view of chained T-nut according to third embodiment of the present invention, (b) Y-Y cross-sectional view of a type without a caulking planned portion at the shaft tip, (c) shaft tip It is a YY sectional view taken on the line of a type with a caulking schedule part. (A) top view of chained T-nut according to fourth embodiment of the present invention, (b) Y-Y cross-sectional view of a type without a portion to be caulked at the shaft tip, (c) shaft tip It is a YY sectional view taken on the line of a type with a caulking schedule part. (A) top view of chained T-nut according to fifth embodiment of the present invention, (b) Y-Y cross-sectional view of a type without a caulking planned portion at the shaft tip, and (c) shaft tip It is a YY sectional view taken on the line of a type with a caulking schedule part. (A) top view of chained T-nut according to sixth embodiment of the present invention, (b) Y-Y cross-sectional view of a type without a caulking planned portion at the shaft tip, and (c) shaft tip It is a YY sectional view taken on the line of a type with a caulking schedule part. FIG. 1A is a plan view, FIG. 1B is a side sectional view, and FIG. 3C is a sectional view taken along line ZZ in FIG. is there. It is an example in which the shaft portion of the chain-shaped T-nut of the present invention has an enlarged diameter portion. It is another example in which the shaft portion of the chain-shaped T-nut of the present invention has an enlarged diameter portion. It is an example in which the chain T-nut of the present invention has another flange portion. It is an example of the nail | claw employable as the chain | strand-shaped T nut of this invention. It is explanatory drawing which shows a mode that the caulking scheduled part of T nut bites into a to-be-adhered thing.

Hereinafter, embodiments of the chain T-nut of the present invention will be described in detail with reference to the drawings as appropriate.
In addition, the chain | strand-shaped T nut of this invention is not limited to the following embodiment.

(First embodiment)
Fig.1 (a) is the chain | strand-shaped T nut 10 which concerns on 1st Embodiment of this invention. The chain-shaped T-nut 10 leaves a bridging portion 5 between adjacent T-nuts 1 when the T-nut 1 is sheet-metal processed from a slitter coil (strip-shaped metal plate, not shown) obtained by slitting a coil material of a metal plate. Thus, a plurality of T-nuts 1 are connected in a column.

  As shown in FIG. 2, the T-nut 1 has a cylindrical shaft portion 2 that is open at both ends and provided with an internal thread 2a on the inner surface, and a peripheral edge of a base end side (lower side in FIG. 2) opening of the shaft portion 2. It has the provided flange part 3 and the nail | claw 4 extended from the flange part 3 to the front end side (upper side of FIG. 2) of a shaft part.

  As shown in FIG. 2, the shaft portion 2 of the T-nut 1 of the chain-shaped T-nut 10 is provided with a female screw 2a on the inner peripheral surface over substantially the entire length. On the other hand, like the T-nut 11 of the chain-shaped T-nut 10 </ b> A shown in FIGS. 1C and 3, it is also possible to provide a caulking scheduled portion 12 b that is not provided with a female screw at the tip portion of the shaft portion 12. As shown in FIG. 14, the caulking scheduled portion 12 b is a portion that bites into the fixing object D and is caulked and fixed when the T-nut 11 is driven into the fixing object D.

  As shown in FIG. 1A, the flange portion 3 has a substantially hexagonal shape in plan view. The flange portion 3 is configured such that the claws 4 are not provided on the sides 3b and 3b at both ends in the width direction, so that the sides 3b and 3b are clamped when the internal thread is processed on the inner surface of the shaft portion 2 (see FIG. 9). It is comprised so that it can clamp by.

The claw 4 is formed by cutting the outer peripheral portion of the flange portion 3 from the outer side to the inner side in the width direction of the slitter coil (strip-shaped metal plate) (up and down in FIG. 1A). As shown in FIG. 3, the flange portion 3 is provided on the inner side in the width direction from the end sides 3 b and 3 b of the flange portion 3. There are two pairs of claws 4 on both sides of the T-nut 1 in the column direction (left and right direction in FIG. 1A) across the shaft portion 2, for a total of two pairs of four. When viewed from the width direction perpendicular to the axial direction of the portion 2, the portion 2 is provided at a position not overlapping the shaft portion 2 as shown in FIG.
Since the claw 4 is provided at a position that does not overlap the shaft portion 2 when viewed from the width direction, the position in the width direction of the outer peripheral surface of the shaft portion 2 is set as shown in FIGS. The recessed portion 2c is provided by being depressed, and the deformable portion 2e can be formed in the female screw 2a. By providing the deforming portion 2e, it is possible to prevent the bolts screwed into the shaft portion 2 from coming off.

  The bridging portion 5 is formed so as to leave a central portion between the opposing sides 3a, 3a of the adjacent flange portions 3, 3 when the flange portion 3 is punched from the slitter coil. In this way, by connecting the T nut 1 by leaving a part of the slitter coil as the bridging portion 5, a process and an apparatus for aligning and connecting the T nut after forming the T nut become unnecessary.

  The chain-shaped T-nut 10 is drawn after the entire sheet metal processing such as drawing of the shaft portion 2, cutting and raising of the claw 4, and separation of the flange portion 3 from the surrounding unnecessary portion (not shown) is completed, as shown in FIG. As shown in b), the internal thread 2a is processed on the inner surface of the shaft portion 2 by the tapper A. When female threading is performed, long plate-like clamping means B and clamping means that extend the shaft portion 2 and the flange portion 3 from both sides in the width direction (up and down in FIG. 9A, left and right in FIG. 9C). C clamp and fix each.

  The chain-shaped T-nut 10 is provided at a position where the claw 4 does not overlap the shaft portion 2 when viewed from the width direction (see FIG. 9B), so that the flange portion 3 has the width direction (FIG. 9A). The shaft portion 2 can be clamped by the clamping means B from the up and down direction, and the claws 4 are clamped from the width direction by being provided on the inner sides of the end portions 3b and 3b in the width direction of the flange portion 3. Since the flange part 3 can be clamped by the means C, the female thread can be precisely processed.

(Second Embodiment)
FIG. 4 shows a chained T-nut 20 according to the second embodiment of the present invention. The chain-shaped T-nut 20 has a structure in which adjacent T-nuts 1 are connected by a single bridging portion 25, similarly to the T-nut 10 of the first embodiment. As shown in FIG. 4 (a), the bridging portion 25 has one side 3a (FIG. 4 (a)) that connects the pair of claws 4 and 4 in the width direction of the flange portion 3 (up and down in FIG. 4 (a)). At the end of the upper side).
However, when the adjacent flange portions 3 and 3 are connected by a single bridging portion as in the first embodiment or the second embodiment, the bridging portion may be provided at any position on the side 3a. Needless to say.
In the second embodiment to the sixth embodiment and other embodiments, members common to the first embodiment are denoted by the same reference numerals and description thereof is omitted.

(Third embodiment)
FIG. 5 shows a chained T-nut 30 according to the third embodiment of the present invention. As shown in FIG. 5A, the chain-shaped T-nut 30 is provided with a pair of bridging portions 35 and 35 at both ends in the width direction of the side 3a of the flange portion 3 (vertical direction in FIG. 5A). . By connecting the adjacent T nuts 1 and 1 with the pair of bridging portions 35 and 35 in this way, twisting of the chain T nuts 30 can be effectively suppressed. A rectangular through hole 36 is formed in a portion surrounded by the pair of bridging portions 35 and 35 and the adjacent flange portions 3 and 3.

(Fourth embodiment)
FIG. 6 shows a chained T-nut 40 according to the fourth embodiment of the present invention. As shown in FIG. 6A, the chain T-nut 40 is provided with a pair of bridging portions 45, 45 between adjacent flanges 3 as in the chain T-nut 30 of the third embodiment.

In the chain-shaped T-nut 40, the through hole 46 surrounded by the flange portions 3 and 3 adjacent to the pair of bridging portions 45 and 45 is formed in a substantially elliptical shape. By making the through hole 46 elliptical in this way, it is possible to eliminate the corner portion of the through hole 46 and prevent the bridging portions 45 and 45 from being bent or twisted at the corner portion. Further, by making the through hole 46 elliptical, the configuration of the punching die for forming the through hole 46 can be simplified.
The through hole 46 is not limited to an elliptical shape, and may be a track shape or a rounded square shape.

(Fifth embodiment)
FIG. 7 shows a chained T-nut 50 according to the fifth embodiment of the present invention. As shown in FIG. 7 (a), also in the chain-shaped T-nut 50, a pair of bridging portions 55, 55 are provided between adjacent flange portions 3, 3. The bridging portion 55 has a curved shape in which the central portion protrudes outward in the width direction.

  Moreover, the through-hole 56 enclosed by the flange parts 3 and 3 adjacent to a pair of bridge | crosslinking parts 55 and 55 is formed in the substantially track shape. Thus, by making the through-hole 56 into a track shape, it is possible to eliminate the corner portion of the through-hole 56 and prevent the bridging portions 55 and 55 from being bent or twisted at the corner portion. Moreover, the structure of the punching die for forming the through-hole 56 can also be simplified by making the through-hole 56 into a track shape. The through hole 56 is not limited to the track shape, and may be an oval shape or a rounded square shape. The track-type ends need not be complete semicircles.

  A pair of slits 56 a and 56 a are provided at both ends in the width direction of the through hole 56. Since the bridging portion 55 is formed in the curved shape as described above and the slit 56a is provided in the through hole 56, the chain-shaped T-nut 50 is connected to the column of the T-nut 1 when the chain-shaped T-nut 50 is manufactured or driven. The pitch between the T nuts 1 can be adjusted by opening the slit 56a by pulling in the direction.

(Sixth embodiment)
FIG. 8 shows a chained T-nut 60 according to the sixth embodiment of the present invention. As shown in FIG. 8A, the chain-shaped T-nut 60 is provided with a pair of bridging portions 65 and 65 so as to connect both ends of the flange portion 3 in the width direction (vertical direction in FIG. 8A). It has been. As described above, by providing the bridging portions 65 and 65 at the outermost end in the width direction of the flange portion 3, the twist of the chain-shaped T-nut 60 can be suppressed extremely effectively.

(Other embodiments)
FIGS. 10 and 11 show other T-nuts 21 and 31 that can be used in the chain-shaped T-nut of the present invention, respectively. The T nut 21 in FIG. 10 includes a planned caulking portion 22b on the distal end side of the shaft portion 22, and includes a step barrel portion (expanded diameter portion) 22d having a larger inner diameter and outer shape than the distal end side on the proximal end side. A T-nut 31 shown in FIG. 11 has a step barrel portion 32d on the proximal end side and a shaft portion 32 that does not have a caulking scheduled portion on the distal end side.

In all the T nuts described above, the flange portion 3 may be a flange 23 having a part of the outer peripheral end formed in an arc shape as shown in FIG. The flange 23 is formed by cutting and raising the outer peripheral portion of a circular or substantially circular (including elliptical) portion 27 punched out from a slitter coil (band-shaped metal) to form the flange portion 23 and the claw 4. The portions 23a and 23b other than the portion 23c formed by cutting and raising the claw 4 in the outer peripheral end are formed in an arc shape. By making the flange part 23 into such a shape, the mold for forming the flange part 23 can be made into a simple shape.
Note that the shape of the flange portion is not limited to the shape including the hexagon or arc as described above, and is surrounded by various polygons, various curves and / or straight lines as long as they do not depart from the spirit of the present invention. Can be adopted.

  As shown in FIGS. 3, 10, and 11 (b) and 11 (d), the T-nuts 11, 21, 31 also have recesses 12 c, 22 c, 32 c in the shaft portions 12, 22, 32, The deformable portions 12e, 22e, and 32e can be formed, and the deformable portion can be provided on the female screw in the shaft portions of all the T nuts according to the present invention.

  Further, the chained T-nut according to the present invention is not limited to the above-described claw 4 but has a curved line shape whose outer edge does not have a jagged or hook as shown in FIG. A jagged shape as shown in FIG. 13 (b) and a hook shape as shown in FIG. 13 (c) can be appropriately selected. The number of the claws 4 is not limited to four for one T-nut, but may be three or less, or may be five or more.

  The chain-shaped T-nut of the present invention is not limited to the above-described embodiment, and includes all those that can be formed by combining the above-described shaft portion, flange portion, claw, and bridge portion, and other known shaft portions, flange portions, and claws. And a combination of cross-linked parts.

  Since the internal thread portion is processed with high accuracy, the chain-shaped T-nut of the present invention can be suitably used for various T-nuts.

10, 10A, 20A, 30, 30A, 40, 40A, 50, 50A, 60, 60A, 70, 70A Chained T-nut 1, 11, 21, 31 T-nut 2, 12, 22, 32 Shaft 2a, 12a , 22a, 32a Female thread 12b, 22b Planned caulking portion 2c, 12c, 22c, 32c Recessed portion 2e, 12e, 22e, 32e Deformed portion 22d, 32d Step barrel portion (expanded diameter portion)
3, 23 Flange part 4 Claw 5, 25, 35, 45, 55, 65 Bridging part 27 Circular or substantially circular part 36, 46, 56 Through hole

Claims (8)

A plurality of cascaded T-nuts formed integrally from a strip-shaped metal plate and a bridging portion connecting adjacent T-nuts;
The T-nut has a cylindrical shaft portion that is open at both ends and has an internal thread on the inner surface, a flange portion that is provided at the periphery of the proximal-side opening of the shaft portion, and the flange portion to the distal end side of the shaft portion. With extending nails,
The claw is cut and raised from the outside in the width direction of the band-shaped metal plate to the inside, and is provided at a position that does not overlap the shaft portion when viewed from the width direction. T-nut. The chain-like T-nut according to claim 1, wherein a pair of the bridging portions are provided between flange portions of adjacent T-nuts. A plurality of cascaded T-nuts formed integrally from a strip-shaped metal plate and a bridging portion connecting adjacent T-nuts;
The T-nut has a cylindrical shaft portion that is open at both ends and has an internal thread on the inner surface, a flange portion that is provided at the periphery of the proximal-side opening of the shaft portion, and the flange portion to the distal end side of the shaft portion. With extending nails,
The claw is cut and raised from the outside in the width direction of the band-shaped metal plate to the inside,
A pair of the bridging portions are provided between the flange portions of adjacent T-nuts,
A chain-shaped T-nut characterized in that a through hole surrounded by a flange portion and a pair of bridging portions has an elliptical shape, a track shape, or a rounded square shape. The chain-shaped T-nut according to claim 2 or 3, wherein slits are provided at both end portions in the width direction of the through hole surrounded by the flange portion of the adjacent T-nut and a pair of bridging portions. The said flange part is formed by cutting up a nail | claw from the outer peripheral part of the circular or substantially circular part punched from the said strip | belt-shaped metal plate, The chain shape of any one of Claims 1-4. T nut. The chain-shaped T-nut according to any one of claims 1 to 5, wherein the shaft portion includes an enlarged diameter portion having a larger outer diameter and inner diameter than a distal end side on a proximal end side. The chain-shaped T-nut according to any one of claims 1 to 6, wherein the shaft portion has a planned caulking portion that is caulked and fixed to an object to be fixed on a distal end side. The said internal thread is a chain | strand-shaped T nut of any one of Claim 1 to 7 which has the deformation | transformation part provided by depressing the outer peripheral surface of the said axial part from the said width direction.

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