JP3103654U - Riveted caulking tool with screw - Google Patents

Abstract

An object of the present invention is to provide a threaded rivet caulking tool which cannot rotate a knob head of a mandrel support until sufficient caulking by pulling down of an operation lever occurs.
The operating lever (3) of the rivet swaging tool (21) presses a guide sleeve (2) in a tool body (2) by a spring load. A male threaded mandrel 4 to which threaded rivets are mounted is fixed to a mandrel support 5 which can be mounted to be rotatable relative to the guide sleeve. The knob head 16 at the rear end of the mandrel support 5 has a non-circular cross section and passes through the rear opening of the tool body 2. In an initial state in which the operating lever is not rotated against the spring force, most of the knob head 16 together with the guide sleeve is pulled into the tool body through the rear opening, and almost all of the operating lever is opposed against the spring force. Only when rotated over the stroke does the entire knob head slip out of the rear opening and become rotatable.
[Selection diagram] FIG.

Description

  The present invention relates to a threaded rivet caulking tool for inserting a threaded rivet having a female thread portion on an inner surface of a tip portion into a hole of an application plate and fixing the rivet to the application plate by caulking.

As shown in FIG. 1, such a threaded rivet swaging tool 1 is generally called a “hand nutter”, and is basically rotated around a pivot with respect to the tool body 2. And an operation lever 3 which is connected as possible. (For example, see Non-Patent Document 1.)
"AP Hand Nutter", [online], online tool catalog of World Tool Co., Ltd./Astro Products, [searched February 25, 2004], <URL: http: // www. astro-p.co.jp/item/item8/item-8-bankintosou7.htm>

  A guide sleeve 13 (see FIG. 4) is slidably provided in the tool body 2. The operating lever 3 normally presses the guide sleeve forward by a spring load, and retracts the guide sleeve rearward by rotating about a pivot by pulling it close to the tool body 2 against the spring force. Perform the action.

  The threaded rivet swaging tool 1 further comprises a male threaded mandrel 4 whose front end can be screwed into the female thread of the threaded rivet, and a mandrel support 5 which can be rotatably mounted relative to the guide sleeve. Have. The mandrel support 5 can fix the rear end of the mandrel 4 with a male thread at the front end, and has a knob head 6 at the rear end to facilitate rotation of the mandrel support 5.

  Furthermore, the general threaded rivet swaging tool 1 has the front end of the male threaded mandrel 4 projecting forward from the tool protruding forward from the front nose part 7 of the tool body, thereby reducing the amount of forward projection of the male threaded mandrel 4. The nosepiece 7A can be set freely. Further, the knob head 6 of the mandrel support 5 is made to protrude rearward from the rear opening of the tool body 2.

  In use, such a screwed rivet swaging tool 1, a so-called “hand nutter”, is formed by screwing an aluminum threaded rivet 8 to the front end of a male threaded mandrel 4 as shown in FIG. It is inserted into a mounting hole 10 formed in advance on the application plate 9.

  When the operating lever 3 is pulled and rotated against the spring load of a spring (not shown) in the state set in this manner, the mandrel support 5 together with the guide sleeve 13 (see FIG. 4) is located behind the tool body 2, that is, , Retracts into the front nose part 7. At this time, the male threaded mandrel 4 attached to the mandrel support 5 is drawn toward the front side of the mounting hole, and the thin intermediate portion 8B of the threaded rivet 8 where the female thread is not formed is swaged as shown in FIG. Can be As a result, the threaded rivet 8 is firmly fixed to the application plate 9 by the caulked intermediate portion 8B and the rivet flange 8A.

  Thereafter, by rotating the knob head 6, the mandrel 4 with the external thread is removed from the screwed rivet 8 to which the male thread 4 is fixed as shown in FIG. 2 (c). In this way, as shown in FIG. 2D, the object 11 can be brought into contact with the rivet flange 8A of the threaded rivet 8 and screwed with the bolt or screw 12 that fits the threaded rivet 8. .

  However, the conventional so-called “hand natter” can rotate the knob head 6 in a state where the swaging is insufficient. If the knob head 6 is rotated to remove the male threaded mandrel 4 from the threaded rivet 8 with insufficient swaging, the threaded rivet 8 will not be firmly fixed to the application plate 9. If the mounting object 11 is to be fixed by the bolt or the screw 12 in this state, the threaded rivet 8 rotates together with the bolt or the screw 12, and the tightening by the bolt or the screw 12 becomes impossible.

  SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a threaded rivet swaging tool in which the gripping head of the mandrel support cannot be rotated until sufficient swaging of the operating lever has occurred.

  In order to achieve this object, the threaded rivet swaging tool of the present invention has a non-circular cross section in the knob head of the mandrel support, and the rear opening of the tool body has a similar shape slightly larger than the non-circular shape. In a no-load initial state in which the operating lever is not rotated against the spring force, most of the knob head together with the guide sleeve is pulled into the tool body through the rear opening, and is opposed to the spring force. Only when the operation lever is rotated over almost the entire stroke, the entire knob head is made to come out of the rear opening.

  With this configuration, the part of the non-circular knob head does not come out of the rear opening until the operation lever is rotated over almost the entire stroke, that is, until the tool body is sufficiently drawn and caulked sufficiently, The knob head cannot be rotated and is prevented from coming off the threaded rivet.

  In a preferred embodiment of the present invention, the tool body, the operation lever, and the knob head are coated with a fluororesin so that the tool body, the operation lever, and the knob head can be used in a place where there is a risk of electric shock in a live (energized) state.

  Next, a preferred embodiment of the present invention will be described with reference to the drawings.

  FIG. 3 shows the threaded riveting tool 21 of the preferred embodiment of the present invention. A guide sleeve 13 as shown in FIG. 4A is slidably disposed in the tool body 2 of the threaded rivet swaging tool 21 over the upper and front nose portions 7 in the axial direction. A pair of grooves 15 is formed at an intermediate portion of the guide sleeve 13 so as to form flat surfaces 14 on diametrically opposed side surfaces. A bifurcated finger (not shown) at the upper end of the operation lever 3 is engaged with the pair of grooves 15, and the guide sleeve 13 moves forward toward the front nose 7 by a spring load on the operation lever 3. To be pressed in the direction of

  The mandrel support 5 is accommodated inside the guide sleeve 13 so as to be rotatable relative to the guide sleeve 13. According to the present invention, the knob head 16 provided at the rear end of the mandrel support is not a conventional knob head having a substantially circular cross section in which a knurl is cut as in the related art, but has a non-circular cross section, for example, FIG. d) A flat and substantially hexagonal shape as shown in d).

  In a no-load state where no force is applied to the operation lever 3, as shown in FIG. 3A, the knob head 16 is prevented from falling out of the rear opening 17 of a similar shape slightly larger than this cross-sectional shape. As shown in FIG. 3 (b), the entire knob head 16 is made to come out of the rear opening 17 only when the operation lever 3 is rotated over substantially the entire stroke of the operation lever 3 against the spring force.

  The knob head 16 cannot be rotated with respect to the guide sleeve 13 until the operating lever 3 is rotated over almost the entire stroke from the initial no-load state. Therefore, the male threaded mandrel 4 cannot be rotated. Only when the operating lever 3 has been turned over almost the entire process against the spring force can the knob head 6 of the mandrel support 5 with the externally threaded mandrel 4 be rotated and removed from the swaged threaded rivet 8.

  According to the present invention, it is not possible to remove the male threaded mandrel 4 from the threaded rivet 8 in an insufficiently caulked state. Therefore, it is ensured that the threaded rivet 8 is firmly fixed to the application plate.

  Preferably, the tool body 2, the operation lever 3, and the knob head 16 are coated with a fluororesin. According to this configuration, the rivet 8 with the screw can be safely used in the operation of fixing the rivet 8 with the screw to the application plate at the site where there is a risk of electric shock in a live state (energized).

  INDUSTRIAL APPLICABILITY The present invention can be used in the electrical industry, electrical installation, construction, and construction industries where a nut is to be fixed to the back of a plate.

It is a disassembled perspective view of the conventional screw rivet caulking tool. It is explanatory drawing of the initial stage of the use situation of a screw rivet caulking tool, (a) is a side view with a partial cross section which shows the state which set the screw rivet in the mounting hole of an applicable plate, (b) is an operation lever. (C) is a side view showing a state in which a mandrel with an external thread is removed from a swaged rivet with a screw, and (d) is a side view showing a state in which a mandrel with an external thread is removed from a swaged rivet. It is a side view with a partial cross section showing a situation when fixing an attached object to a fixed threaded rivet. (A) is a side view showing the initial state of the threaded rivet caulking tool according to the preferred embodiment of the present invention, and (b) is a side view when the operation lever is rotated over the entire stroke. (A) is a side view of the guide sleeve, (b) is an end view of the guide sleeve, (c) is a side view of an embodiment of the mandrel support according to the present invention equipped with a male threaded mandrel, and (d) is according to the present invention. It is explanatory drawing which shows the knob head of the Example of a mandrel support body, and the outline of a rear opening.

Explanation of reference numerals

1 Riveting tool with screw (conventional example)
2 Tool body 3 Operation lever 4 Mandrel with male thread 5 Mandrel support 6 Knob head 7 Front nose part 8 Screw rivet 9 Applicable plate 10 Mounting hole 11 Object 12 Bolt or screw 13 Guide sleeve 14 Flat surface 15 Groove 16 Knob head (The present invention)
17 Rear opening 21 Screw riveting tool (the present invention)

Claims (2)

A tool for inserting a threaded rivet having a female thread portion on the inner surface of the tip portion into a mounting hole of an application plate and fixing the same to the application plate by caulking,
The tool body,
A guide sleeve slidably provided in the tool body,
An operating lever rotatably connected to the tool body around a pivot, wherein the plain lever presses the guide sleeve forward by a spring load and approaches the tool body against a spring force. An operating lever for retracting the guide sleeve backward by pulling and rotating about the pivot;
A male threaded mandrel capable of screwing a front end into the female thread of the threaded rivet;
A mandrel support that can be attached to the guide sleeve so as to be rotatable relative to the guide sleeve, and a rear end of the male threaded mandrel can be fixed at a front end, and the mandrel support can be rotated at a rear end. A mandrel support provided with a knob head for facilitating the front end of the male threaded mandrel projecting forward of the tool from the front nose portion of the tool body; In a threaded rivet setting tool, the amount of which can be set to be adjustable, and the knob head of the mandrel support is projected from a rear opening of the tool body.
The knob head of the mandrel support has a non-circular cross section, the rear opening is also formed in a similar shape slightly larger than the non-circular shape, and no load is applied so that the operation lever is not rotated against spring force. In the initial state, most of the knob head together with the guide sleeve is retracted into the tool body through the rear opening, and only when the operating lever is rotated over almost the entire stroke against the spring force, the knob is turned. A threaded rivet caulking tool, wherein the entire head comes out of the rear opening.   The rivet swaging tool according to claim 1, wherein the tool body, the operation lever, and the knob head are coated with a fluororesin.

Images