JP3106805U - Rivet fastening device - Google Patents

Abstract

Provided is a rivet fastening device that obtains a long impact path, achieves a favorable rivet impact, and does not increase the volume.
A main body having a space and an operation tank inside, a staple box provided outside the main body, a nozzle connected to the front end of the staple box and corresponding to the outside of the operation tank, and having a mandrel tank; A motor having a rotatable output shaft installed in the space, a main gear connected to the output shaft and forming the first band moving part, and meshing with the main gear to form a second band moving part Sub-gear, mandrel, sliding element, and elastic element. When the motor's output shaft rotates, the main gear meshes with the sub-gear and transmits, and the front end of the sliding element is connected to the mandrel. The sliding element is a rivet fastening device of a type in which each gear is swung to retreat to a rivet shooting position, and a two-stage path having a long impact path is accumulated from the nozzle.
[Selection] Figure 1

Description

  The present invention relates to a rechargeable rivet fastening device when used to fasten a plurality of plate members for sheet metal assembling work, and more particularly to a rivet fastening device having a long impact path.

  In the conventional rechargeable rivet fastening device, the output shaft is actuated by an electric motor to drive the transmission gear to cause rotation. When the transmission gear rotates, the convex block protruding on one side of the transmission gear comes into contact with the contact block and thrusts the sliding element in the direction opposite to the nozzle. The retracted sliding element applies pressure to the elastic element located at the rear, and the convex block whose position has changed due to the rotation of the transmission gear leaves the contact block, and when the motor stops rotating, the elastic element applies force. Release and move the sliding element quickly in the direction of the nozzle to complete the rivet fastening operation.

The structure as described above can complete the rivet fastening operation, but the maximum path that the sliding element can retract is only a small arch-shaped distance defined by the convex lock on the transmission gear, thus There is a limit to the rivet fastening path of the sliding element. For this reason, some rivet fastening structures increase the diameter of the transmission gear and increase the area of the convex block, but such a structure increases the volume of the rivet fastening device and is inconvenient to use. There is.
JP 2002-316233 A

It is an object of the present invention to provide a rivet fastening device that acquires a long impact path and achieves a favorable rivet shot impact by accumulating two-stage paths.
Another object of the present invention is to provide a rivet fastening device that does not increase in volume with a simple structure.

  In order to achieve the above-described object, a rivet fastening device according to the present invention includes a main body having a space and an operation tank therein, a staple box that is provided outside the main body, and a front end of the staple box. Correspondingly, a nozzle having a mandrel tank, a motor installed in the space of the main body and having a rotatable output shaft, a main gear connected on the output shaft and forming a first belt moving part, It consists of a sub-gear that meshes with the gear and forms a second belt moving part, and a rivet fastening unit that is composed of a mandrel, a sliding element, and an elastic element. The mandrel moves between the mandrel tank and the working tank of the nozzle, the sliding element front end is connected to one end of the mandrel, the sliding element reciprocates between the first position, the second position, and the third position, and The sliding element has a first contact part that contacts the first belt moving part and a second contact part that contacts the second belt moving part, and the elastic element provides thrust and acts on the rear end of the sliding element. And the sliding element is moved in the direction of the nozzle. With the structure as described above, the rotating main gear thrusts the sliding element located at the first position to the second position, and further, the rotating sub gear drives the sliding element located at the second position to the third position. And when the sliding element reaches the third position, the elastic element thrusts the sliding element in the direction of the nozzle.

That is, in order to solve the above-mentioned problem, the invention of claim 1 is a rivet fastening device, which is a main body having a space and an operation tank therein, a staple box provided outside the main body, and the staple box. A nozzle connected to the front end and corresponding to the outside of the working tank, having a mandrel tank, a transmission mechanism installed in the space of the main body and having a rotatable output shaft, and connected to the output shaft, A main gear that forms a banding portion, a sub gear that meshes with the main gear and forms a second banding portion, and a rivet fastening unit that includes a mandrel, a sliding element, and an elastic element, The mandrel moves between the mandrel tank and the working tank of the nozzle, the sliding element front end is connected to one end of the mandrel, and the sliding element is in a first position, a second position, a second position, Reciprocating between positions, and the sliding element has a first contact part that contacts the first banding part, a second contact part that contacts the second banding part, and the elastic element is Providing a thrust to act on the rear end of the sliding element, moving the sliding element in the direction of the nozzle;
Due to the structure as described above, the rotating main gear thrusts the sliding element located at the first position to the second position, and further, the sliding located at the second position by the rotating sub gear. The rivet fastening device is characterized in that when the element is thrust to the third position and the sliding element reaches the third position, the elastic element moves the sliding element in the direction of the nozzle.
The invention according to claim 2 is the rivet fastening device according to claim 1, further comprising a buffer block installed inside the main body and positioned near the nozzle of the working tank.
The invention of claim 3 is characterized in that the main gear and the sub-gear front have convex rods to form the first band moving part and the second band moving part, respectively, and the sliding element is in a block shape, 3. The rivet fastening device according to claim 2, wherein the upper and lower blocks are protruded from the upper and lower positions of the side surface to form the first and second resistor portions, respectively. It is.
According to a fourth aspect of the present invention, the case in the main body is provided with a concave groove along the axial direction of the operation tank, and the top and the bottom of the sliding element have rectangular blocks corresponding to the concave groove, respectively. The rivet fastening device according to claim 3, wherein the sliding element is moved only in a linear direction.
5. The rivet fastening device according to claim 4, wherein the transmission mechanism is a motor, and the front end of the output shaft extends to the working tank and is connected to the main gear. It is.
6. The rivet according to claim 5, wherein the elastic element is a spring, one end of the spring acts on the rear end of the sliding element, and the other end acts on the main body. Fastening device.

  According to the present invention, there is an advantage that a long impact path is obtained, a favorable impact of rivet fastening is obtained, and further, a simple structure and a small size are obtained without increasing the volume.

  Referring to FIGS. 1 and 2, a rivet gun 100 according to a preferred embodiment of the present invention has a space 12 and a working tank 13 in a form in which two half cases 11 are mated with each other. A main body 10 in which a concave plate 14 is installed along the direction and a fixing plate 15 having a through hole 151 is left in the working tank 13, a staple box 16 provided in contact with the outside of the main body 10, and a front end of the staple box 16 And a nozzle 17 having a mandrel tank 171 corresponding to the outside of the working tank 13, a buffer block 18 installed inside the main body 10 and located near the nozzle 17 of the working tank 13, and a space of the main body 10 12 has an output shaft 21 that is rotatable and has a non-circular cross section, and the front end of the output shaft 21 passes through the through hole 151 of the fixed plate 15 and extends in the direction of the working tank 13. The motor 20 and the output shaft 21 are connected to one protruding end, and the output shaft 21 rotates to rotate, and has a convex rod 31 on the circumference near the front surface to form a first moving part. A main gear 30 that is coupled to the fixed plate 15, meshes with the main gear 30, and has a convex rod 41 on the circumference in the vicinity of the front surface to form a second band moving portion; A rivet fastening unit 50 including a mandrel 51, a sliding element 52, and an elastic element 53.

  The mandrel 51 moves between the mandrel tank 171 and the working tank 13 of the nozzle 17 and further has a contact hole 511 at one end.

  The sliding element 52 is in the form of a block, and has a rectangular block 521 corresponding to the concave groove 14 of the main body 10 on the top and bottom, respectively, and the sliding element 52 is linear in the working tank 13. Only to move to. Further, the front end of the sliding element 52 has a plug 522 and is connected to the contact hole 511 of the mandrel 51, and the rear end of the sliding element 52 is provided with a concave tub 523. The first resistor portion and the second resistor portion, which are composed of the upper block 524 and the lower block 525, respectively protrude from the upper and lower positions of the first block. It should be noted that the sliding element 52 forms an altitude difference H between the upper block 524 and the lower block 525.

  One end of the elastic element 53 comes into contact with the concave tank 523 at the rear end of the sliding element 52, the other end of the spring 53 extends into the sleeve 54, and the end wall of the working tank 13 of the main body 10 Acts indirectly.

  The description of each component of the rivet gun 100 as described above and the associated position is as follows.

  2 and 3 are views showing a state in which the sliding element 52 is located at the first position P1. At this time, the convex rod 31 of the main gear 30 and the upper block 524 of the sliding element 52 are in contact with each other, and the elastic element 53 is in contact. Stretches.

  When the motor 20 continues to operate and the main gear 30 and the sub gear 40 rotate together, the convex rod 31 pushes the upper block 524, and the sliding element 52 moves from the first position P1 to the second position P2. 4 and 5, when the sliding element 52 reaches the second position P2, the mandrel 51 retracts relative to the buffer block 18, and the convex bar 41 of the sub gear 40 The convex bar 31 comes into contact with the resistance block 525, and with the rotation of each gear, the convex bar 31 is detached relative to the upper resistance block 524, and the convex bar 41 continues to move the sliding element 52 from the second position P2 to the second position P2. As shown in FIGS. 6 and 7, the sliding element 52 at this time moves away from the nozzle 17 under the joint transmission operation of the convex rods 31 and 41 of the main gear 30 and the sub gear 40 as shown in FIGS. Along with a long impact path, , The elastic element 53 in accordance with the sliding element 52, transferred recession after being compressed, accumulating the reaction of the elastic.

  As shown in FIGS. 8 and 9, when the main gear 30 and the sub gear 40 rotate together, the sliding element 52 has passed the third position P <b> 3, and the convex bar 41 does not contact the lower block 525. Further, the convex bar 41 is located within the range of the height difference H, the elastic element 53 releases the accumulated reaction force, and provides a thrust to the sliding element 52. The sliding element 52 together with the mandrel 51 and the nozzle 17 On the other hand, the rivet is fastened and the rivet fastening is completed when the front end of the sliding element 52 contacts the buffer block 18.

  As can be seen from the above description, the rivet gun 100 of the present invention obtains the distance of the two-stage path by the combined transmission of the main gear 30 and the sub-gear 40, effectively increases the impact path, and has a preferable rivet fastening effect. To achieve. Furthermore, the structure of the present invention is simple, does not increase in volume, and is easy to operate.

1 is an exploded view of a preferred embodiment of the present invention. FIG. 4 is an assembly view when the sliding element is in a first position according to a preferred embodiment of the present invention; FIG. 3 is a simplified diagram of FIG. 2 and shows a positional relationship between a driving gear and a sliding element. FIG. 3 is an assembly view when the sliding element is in a second position according to a preferred embodiment of the present invention; FIG. 5 is a simplified diagram corresponding to FIG. 4. FIG. 6 is an assembly view when the sliding element is in a third position according to a preferred embodiment of the present invention; FIG. 7 is a simplified diagram corresponding to FIG. 6. It is a figure explaining the movement of the sliding element in the nozzle direction. FIG. 9 is a simplified diagram corresponding to FIG. 8.

Explanation of symbols

100 ... Rivet gun 10 ... Body
11 ... Case
DESCRIPTION OF SYMBOLS 12 ... Space 13 ... Actuation tank 14 ... Groove 15 ... Fixed plate 151 ... Through-hole 16 ... Staple box 17 ... Nozzle 171 ... Mandrel tank 18 ... Buffer block 20 ... Motor 21 ... Output shaft 30 ... Main gear 31 ... Convex rod 40 ... sub gear 41 ... convex bar 50 ... rivet fastening unit 51 ... mandrel 511 ... contact hole 52 ... sliding element 522 ... plug 523 ... concave tank 524 ... upper block 525 ... lower block 53 ... elastic element 54 ... sleeve
H ... Altitude difference
P1 ... First position
P2 ... Second position
P3 ... Third position

Claims (6)

A rivet fastening device,
A body having a space and a working tank inside,
A staple box installed outside the main body,
A nozzle connected to the front end of the staple box, corresponding to the outside of the working tank, and having a mandrel tank;
A transmission mechanism installed in the space of the main body and having a rotatable output shaft;
A main gear coupled on the output shaft and forming a first belt moving part;
A sub-gear meshing with the main gear to form a second belt moving part;
A rivet fastening unit comprising a mandrel, a sliding element, and an elastic element;
Consists of
The mandrel moves between the mandrel tank and the working tank of the nozzle, the sliding element front end is connected to one end of the mandrel, and the sliding element is between a first position, a second position, and a third position. The sliding element has a first contact portion that contacts the first band moving portion and a second contact portion that contacts the second band moving portion, and the elastic element provides thrust. And acting on the rear end of the sliding element, moving the sliding element in the direction of the nozzle,
Due to the structure, the rotating main gear thrusts the sliding element located at the first position to the second position, and further, the rotating sub gear causes the sliding element located at the second position to move to the second position. A rivet fastening device characterized in that the elastic element moves the sliding element in the direction of the nozzle when thrusting to a third position and the sliding element reaches the third position. The rivet fastening device according to claim 1, further comprising a buffer block installed inside the main body and positioned near the nozzle of the working tank. The main gear and the sub-gear front face have convex rods to form the first belt moving portion and the second belt moving portion, respectively, and the sliding element is in a block shape and at the upper and lower positions on the side surface. The rivet fastening device according to claim 2, wherein the upper and lower blocks protrude from the upper block and the second block, respectively. The case in the main body is provided with a concave groove along the axial direction of the working tank, and has a rectangular block corresponding to the concave groove on the top and bottom surfaces of the sliding element, and the sliding element The rivet fastening device according to claim 3, wherein the rivet fastening device is moved only in a linear direction. 5. The rivet fastening device according to claim 4, wherein the transmission mechanism is a motor, and the output shaft front end extends to the operation tank and is in contact with the main gear. The rivet fastening device according to claim 5, wherein the elastic element is a spring, one end of the spring acts on a rear end of the sliding element, and the other end acts on the main body.

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