JP6410141B2 - Tightening tool - Google Patents

Description

Used mainly for tightening and crimping blind nuts.

Conventionally, manual lever type or power type dedicated tools are used, especially for manual tools, which require a strong force. After the blind nut is crimped, the tightening screw must be removed manually, which is a lot of work. Is hanging

Patent Publication 2001-259779 Blind Riveter Patent Publication 2001-321878 Riveter Patent Publication 2005-46862 Fastener Fastening Device Patent Publication 2010-5686 Caulking Tool

The present invention relates to an improvement of “Japanese Patent Application No. 2013-244360”, and is attached to a small power tool such as a small electric screwdriver drill as a tool for attaching a blind nut, or a power source is directly attached to a drive shaft. It can also be used manually, or it can be used, and the conventional disadvantages are the installation of the blind nut to the tightening screw, the crimping method that does not require a strong force, the removal of the tightening screw, and the return to the base point of the driven shaft. , To be easily made possible by a series of operations

It uses the basic ability of the screw,
1. Based on the combination of male screw and female screw, one side is rotated as the driving side, and the operation is based on the expansion and contraction of the screw. 2. One direction for rotation in the direction of tightening the driven shaft when the driven shaft is near the base point. When the drive shaft is rotated to activate the clutch and attach the blind nut to the tightening screw, the flange presser moves the control cylinder near the end of the installation, and the one-way clutch is deactivated. Next, near the end of the installation of the blind nut to the tightening screw, the flange holder moves the control cylinder, and the one-way clutch is activated against the rotation in the direction of pulling back the driven shaft. When the drive screw is reversed after the tightening process, the drive screw and the driven screw are rotated together according to the operation of the one-way clutch. The nut is removed from the tightening screw and the flange retainer returns to its original position, so that the control cylinder returns to the original position and the one-way clutch is stopped to return the driven shaft to the original position 4, when the driven shaft is pushed back too much or , When it is pulled too much, directly or indirectly rotate the driven shaft and drive shaft together

Normally, the installation of blind nuts and blind rivets is easy to carry and operate because of the small size and light weight of the equipment of the present invention, which is a lot of retrofitting and field work. In addition, the convenience can be surely improved because various operations are possible by exchanging the tip.

Full side sectional view of the present invention FIG. 1 is a cross-sectional explanatory view of a one-way clutch as viewed from A-A ′ in FIG. [FIG. 2] Detailed explanatory diagram of one-way clutch Illustration of control cylinder Explanatory drawing of operation process Illustration of one-way clutch using serrated teeth and spring [FIG. 6] E-E 'view, sectional view Process diagram

Since the present invention is basically configured as shown in FIG. 1 and normally uses a right-hand thread, the right-hand thread will be described here. Also, for convenience of explanation, a single object is used here. May be a plurality of things, and vice versa, of course, it is not a thing that specifies the structure. Therefore, when any one of them is written on an integrated object, the entire integrated object is expressed. There is a thing

As representing the overall movement of the present invention, as shown in FIG. In the region where the drive shaft 12 is rotated in the direction of the arrow D and the driven shaft is moved in the direction of the arrow B, a process of attaching the blind nut 18 and a process of tightening the driven shaft 17 In the region where the drive shaft 12 is rotated in the direction of the arrow D ′ and the driven shaft is moved in the direction of the arrow B ′, the blind nut 18 is extracted, and the driven shaft 17 is pushed back. The rotation direction of the drive shaft 12 is switched. Except for, it is intended to do everything automatically

In FIG. 1, lids are provided at both ends of the cylindrical main body 07, the drive shaft 12 is rotatably held by the drive shaft-side lid 10, and the drive shaft 12 has a drive screw 09. , And the thrust receiver 11, and the drive screw 09 is provided with a one-way clutch 14. The drive shaft 12, the drive screw 09, the thrust receiver 11, and the one-way clutch 14 are integrally formed, and at the same time Rotate

In order to set the movement range of the flange presser 02 on the lid 05 in which the driven shaft 17, pusher 04, and lid 05 are arranged concentrically from the center on the opposite side of the lid 10 of the main body 07, A flange holder 02 is integrally attached to the outer side of the main body 07 of the lid 05 on the pusher 04 which is integrally provided with the flange holder 03, and is slid inside the lid 05 and the flange holder 03. Further, the pusher 04 and the flange presser 02 can be configured to change the overall length. Further, the driven shaft 17 includes the tightening screw 01 and the driven screw 08 integrally with the flange presser 02 and the flange. The driven screw 08 configured to be slidable / rotatable with the presser receiver 03 and the driving screw 09 are screwed together, and the position of the driven shaft 17 in FIG. 1 is used as a base point.

Inside the main body 07, the five-virtual control cylinder 06 is crossed with the one-way clutch 14, and the control cylinder 06 is configured to be driven from the pusher 04 through the spring 16, and controlled. In order to push the cylinder 06 back, the position of the control cylinder 06 at the base point of the driven shaft 17 provided with the spring 15 is determined by the balance between the spring 16 and the spring 15.

In the present invention configured as described above, as an explanation of the whole image, the drive shaft 12 is moved in the direction of the arrow D with respect to the directions of arrows B and B 'and D and D' in FIGS. When the driven shaft 17 rotates, the driven shaft 12 moves in the direction of the arrow B. Conversely, when the driven shaft 17 rotates in the direction of the arrow D ′, the driven shaft 17 moves in the direction of the arrow B ′. 18 may be attached by hand, and as a product for this purpose, the structure of the attachment process may be omitted.

[FIG. 3] is a cross-sectional view of the one-way clutch 14 provided on the drive shaft 12 as viewed in the direction of arrow AA ′ in FIG. 1, where A is a full cross-sectional view and B is one direction in the reverse direction. C is a clutch in which both of these are integrated, and the structure is a very general one-way clutch. A groove or a roller (hereinafter referred to as "slope 14c") having an inclined surface (here, for convenience of explanation) The ball 14a is pressed by the spring 14b, the ball 14a is pressed against both the inclined surface 14c and the driven shaft 17, and the drive screw 09 is rotated. According to the direction of the inclined surface 14c, A and B is driven only on one side, C is driven on either side

[FIG. 3] is an explanatory diagram for idling the one-way clutch 14, where A is in the driving state, B is in the control cylinder 06, and the ball 14a is pushed by either the inclined surface 14c or the driven shaft 17. C, which has a gap on both sides and is in an idle state, is a one-way clutch in both directions similar to [FIG. 2], but here shows a state in which it idles in both directions.

In [FIG. 4], the contact portion between the control cylinder 06 and the ball 14a, which represents the cam portion of the control cylinder 06, seen from the direction of arrow C in [FIG. 3] C, functions as a cam. In FIG. 4A, the R side of the ball 14a escapes from the cam, and the L side is pushed by the cam. The position of the driven shaft 17 is at the base point, and the blind nut 18 is not attached / removed. When the drive screw 09 is rotated in the direction of arrow D in this state indicating that the state is, the R-side ball 14a works and the driven shaft 17 also rotates in the same direction. B in FIG. 4 can be attached to the tightening screw 01. When the flange presser 02 is pushed, the ball 14a can be driven with the control cylinder 06 being moved, or the L side ball 14a can be driven. This means that the drive screw 09 is moved in the direction of the arrow D ′. , The driven shaft 17 also rotates in the direction of the arrow D ′, and the rotation of the blind nut 18 is extracted. The black dot in the figure is a guide for the cam moving direction.

In the apparatus configured as described above, the process will be described with reference to [FIG. 5]. The process is in the order of A, B, C, and D. First, [FIG. 5] A is [FIG. 1]. On the other hand, a state in which the blind nut 18 is attached to the tightening screw 01 and is further inserted into the attachment hole of the plate 19 to be attached is shown, and the pusher 04 is attached to the spring 16, depending on the attachment of the blind nut 18. The control cylinder 06 is moved via the one-way clutch 14, and the one-way clutch 14 is operated in a direction in which the blind nut 18 can be removed.

[FIG. 5] B drives the drive screw 09 and pulls in the driven screw 08. As a result, the blind nut 18 attached to the tightening screw 01 is crimped to the attached plate 19, at this time, When the driven screw 08 is pulled excessively for some reason, the pressing plate 13 comes into contact with the drive screw 09 and the driven screw 08 to rotate together, and the driven screw 08 is excessively pulled. Prevent malfunction

[FIG. 5] From B to C, when the drive screw 09 is turned in the direction of the arrow D ′, the driven shaft 17 operates in a direction in which the one-way clutch 14 can be removed by the blind nut 18, and the driven screw 09 is driven. The screw 08 rotates together and pulls out the blind nut 18. Therefore, if the one-way clutch 14 is always operating, the blind nut 18 can be pulled out but the driven shaft 17 cannot be pushed back. Therefore, in order to push back the flange presser 02 through the springs 15 and 16 as shown in [FIG. 5] C and to push back the control cylinder 06 in the same manner as shown in [FIG. The one-way clutch 14 is idled by causing the ball 14a to be disconnected from the inclined surface 14c and the driven shaft 17.

[FIG. 5] D shows the driven screw 08 in order to prevent the occurrence of malfunctions when the drive screw 09 continues to be rotated after the driven nut 17 is returned to the base point after the blind nut 18 is pulled out. The control cylinder 06 is further pushed back according to the side surface 08b provided in FIG. 4, [FIG. 4] in the state indicated by the dotted line C in FIG. To prevent,
Also, in the same figure, when it is in the state of a solid line, when it is idled with respect to rotation on either side and the control cylinder 06 is fixed by any method, only the linear movement of the driven shaft 17 is assumed. As another method of co-rotating that can be performed, [FIG. 6] In FIG. 6B, one or more protrusions 08a provided on the driven screw 08, and similarly provided on the drive screw 09 The purpose can be achieved by engaging the above protrusions 09a.

Embodiment 1 of the Invention

[FIG. 6] A and B illustrate a case where a spring and a protrusion are used for a one-way clutch. [FIG. 6] B is an enlarged view of the clutch portion of [FIG. 6] A. [FIG. FIG. 7B is an explanatory view of arrow F in FIG. 7A and shows the relationship between the projections 14d and 14d ′ and the springs 14f and 14f ′. ing

[FIG. 6] In A and B, as the one-way clutch 14 on the side where the blind nut 18 is attached to the clutch portion 14 of the drive screw 09, one or more holes 14g are drilled, and the holes 14g One end of one or more springs 14f is attached, and the coil part is attached to the inner cylinder part 14e of the one-way clutch 14 at the end of the drive screw 09. One or more holes 14g ′ are drilled as the direction clutch 14, one end of one or more springs 14f ′ is attached to the hole 14g ′, and the coil portion is located at the end of the drive screw 09. The winding direction of the springs 14f and 14f ′ attached to the inner side of the inner cylinder portion 14e of the clutch 14 is opposite to the screw winding direction, and one or more in the disk 06a integrally formed with the control cylinder 06. The projections 14d and 14d ′ are provided, and the springs 14f and 14f ′ are combined as shown in FIG. 7B, and the springs 14f and 14f ′ configured as the one-way clutch 14 are arranged in the direction opposite to the drive screw 09. When the drive screw 09 is rotated and the driven screw 08 is pushed or moved in the pulling direction, the springs 14f and 14f ′ are pushed to the side by the inner cylinder portion 14e of the drive screw 09. In order to move the driven shaft 17 by receiving the power of the springs 14f and 14f ′, which receive the thrust force and push the protrusions 14d and 14d ′, and thereby move the driven shaft 17, the control cylinder 06, It slides on the driven shaft 17 and the driven shaft 17 attached in a spline shape or the like, and performs the same rotation as the driven shaft 17.

[FIG. 7] In B, is the state of the disk 06a located within the broken line range the neutral position, and is this neutral position where the one-way clutch 14 does not operate regardless of the rotation direction of the drive shaft 12? If the drive shaft 12 is rotated in the direction D ′ to prepare for the installation of the blind nut 18 where the design is free, the projection 08a and the projection 09a are engaged by B [FIG. 6] B. Then, until the driven shaft 17 rotates together, the control cylinder 06 is moved in the direction of the arrow B ′ by the spring 14h, and the driven shaft 17 is not pushed back excessively due to this rotation. In the embodiment, the co-rotating position is the base point of the driven shaft 17, and the projection 14d 'and the spring 14f' approach each other as shown in FIG. When rotated in the 'direction, the spring 14f' bends like a two-dot chain line. In this state where the control cylinder 06 and the driven shaft 17 do not rotate, the projection 14d ′ and the spring 14f ′ come into contact with each other when the drive shaft 12 is reversed and rotated in the direction of arrow D. The driven shaft 17 also rotates in the direction of arrow D, and the blind nut 18 is attached to the tightening screw 01.

In the process of rotating the drive shaft 12 in the direction of arrow D and attaching the blind nut 18, the position of the control cylinder 06 is determined by the pressure of the spring 16: the pressure of the (spring 15 + spring 14h). In the process of attaching the drive shaft 12, or when the drive shaft 12 and the driven shaft 17 are completely attached, the rotation of the drive shaft 12 and the driven shaft 17 ends. Further, rotating in the direction of arrow D means that the position of the control cylinder 06 is related to the protrusion 14d of FIG. 7B and the spring 14f, and the blind nut 18 is pulled out from the tightening screw 01. After this, the one-way clutch 14 is operated, and the blind nut 18 is then crimped if a hand force sense or a torque limiter is used as a power source. To be determined Thus, the drive shaft 12, it is possible to proceed to the arrow D 'inverted-rotated in the direction following steps

When the drive shaft 12 is reversed and rotated in the direction of the arrow D ′, the one-way clutch 14 in the direction of pulling out the blind nut 18 from the tightening screw 01 is operated according to the previous item, and the driven shaft 17 is also moved to the arrow. Rotate and rotate in the direction D ′, and remove the blind nut 18 from the tightening screw 01. At this time, the position of the control cylinder 06 is
Pressure of the spring 16: Usually, the spring 16, which is determined by the pressure of the spring 15, is stronger than the spring 15, so that the blind nut 18 is being removed or has been completely removed. , And the driven shaft 17 is pushed back to the base point.

Embodiment-2 of the Invention

[FIG. 1] [FIG. 5] [FIG. 6] Although the drive screw 09 is a female screw and the driven screw 08 is a male screw, although not shown, the drive screw 09 is a male screw and the driven screw 08 is not shown. Even in the case of using a female screw, the present invention is not only effective, but also in the case of a one-way clutch, other methods can also be used. In this way, the structure can be changed within the general design category. The gist of the present invention resides in that the control cylinder 06 can be moved and the one-way clutch 14 can be operated depending on the flange presser 02 and the like, and the excessive pulling and pushing back of the driven shaft 17 are prevented.

Embodiment-3 of the Invention

In order to prevent the blind nut from rotating together, there is a case where a notch is made around the hole where the blind nut is inserted. In order to make such a notch, although not shown, the flange holder 02 And the tightening screw 01 can be used as a “nibbler” if a female blade and a male blade are used. Therefore, a female blade that can be used only by changing the blade edge to form this notch. Unlike the flange holder 02, this notch portion does not need to slide. When the large-sized blind nut 18 is used, the notch has a great effect in preventing the blind nut 18 from co-rotating with the bolt. The flange presser 01 is a part of the flange presser. Although not shown in the drawing, if the “chuck” is used instead of the tightening screw 01, it can be used for pulling in the “blind rivet”.

Currently, there is limited demand for blind nuts because of the limited installation tools for blind nuts, but in the future, the use of burring and welding nuts is expected to expand.

01 Tightening screw 02 Flange holder 06 Control cylinder 07 Main body 08 Driven screw 09 Drive screw 11 Thrust receiver 12 Drive shaft 14 One-way clutch 17 Driven shaft 18 Blind nut

Claims (2)

A main body in which both ends of a cylindrical member are closed with a lid provided with a through hole, a driving side member in which at least a driving screw and a driving shaft are integrally formed, a configuration in which a tightening screw can be attached to at least a tip, and the other end A tightening tool having a structure in which a driven shaft having a driven screw provided on a portion thereof is integrally formed with the driven shaft and having a structure in which the driving screw and the driven screw are screwed together in a main body. By rotating the driven shaft, the driven shaft can be expanded and contracted, and when the driven side member is excessively pushed back beyond the vicinity of the reference point by the rotation of the driving side member, the driving side member Tightening tool having a rotating structure The tightening tool according to claim 1 is provided by attaching a tightening screw to the driven shaft outside the through-hole of the lid and moving a flange presser mounted and arranged concentrically with the tightening screw in the axial direction of the driven shaft. A control cylinder that can move directly or indirectly in the axial direction of the driven shaft through a through hole and concentrically mounted on the driven shaft in the body, and the control cylinder is integrated with the one-way clutch of the drive side member It is constructed so that it can rotate, the drive side member is rotated, and when the driven side member is tightened in the direction from the base point to the end of the tightening process, the control cylinder rotates in the opposite direction to the rotational direction in which it is moved in the direction of being pulled into the drive shaft. When it is done, it becomes a pushing back process from the end of the tightening process to the base point direction, and the control cylinder moves in the direction pushed back to the driven shaft side, and the driving side member is moved in any direction. When rotating, the one-way clutch depends on the position of the control cylinder, and in the driving state, the driven member is rotated in the same direction as the driving member. In the idling state, the rotating drive is stopped and the driven member is screwed. The control cylinder is set in advance so that the driving state and idling state of the one-way clutch can be changed according to the purpose, and the drive side member is from the start to the end of rotation. The structure that can change the state of controlling the one-way clutch depending on the rotation direction of the drive side member by moving the control cylinder and controlling the one-way clutch when attaching or removing the blind nut to the tightening screw. The tightening tool according to claim 1 having

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