TWI573633B - Caulking gun - Google Patents

Description

Glue gun

The invention relates to a glue gun.

The glue gun is used to push out the colloid in the rubber cylinder. The conventional glue gun is disclosed in the patent TW M406469 or US 6,640,998. Usually, the push rod is matched with the connecting rod set, and the connecting rod set is connected with the trigger when the trigger is pressed. The push rod moves the push block to drive the push rod forward, wherein the trigger is directly pivoted with one of the links in the link set to drive the link set by the press pivot of the trigger.

However, the link mechanism formed by the link set and the trigger is limited by the amplitude and position of the trigger, and the design and the trajectory of the link are very limited. Most importantly, because of the full-link mechanism. The mode of action is affected by the direction of the activity space and the force applied. The force of pressing the trigger has a lot of useless forces that will be lost in the relative movement of the complex link. To push the push rod forward, a greater force must be applied. More laborious.

In addition, such a complicated connecting rod system is difficult to manufacture and assemble, and it is inconvenient because the pivotal joint between the connecting rods is difficult to rotate or jam due to rust or the like after a long period of use.

The main purpose of the present invention is to provide a glue gun which is simple in structure and labor-saving. Easy to use.

To achieve the above object, the present invention provides a glue gun comprising a body, a push rod, a push block, a link set, a trigger and a limit member.

The main body has a first end and a second end, the main body includes an operating portion, and the operating portion extends downward to form a grip near the second end; the push rod is along the first end and the second end The end of the connecting rod passes through the operating portion, and the end of the push rod is closer to the first end for pushing the colloid in the rubber cylinder; the pushing block is located in the operating portion and is biased by the elastic force of a first elastic member a tendency of the second end to move, the push block is formed with a first through hole having an inner diameter larger than the outer diameter of the push rod and the push rod passes through the first through hole, the push block is oriented toward the second end One side has a pushing portion, and the pushing portion is located below the first through hole; the connecting rod group includes a front connecting rod and a rear connecting rod, wherein one end of the rear connecting rod is pivotally connected to the operating portion near the second end One end of the front connecting rod is pivotally connected to the rear connecting rod, and one end of the front connecting rod away from the rear connecting rod abuts against the pushing portion of the pushing block; the opposite ends of the trigger are respectively a pressing end and an pushing The pressing end is farther from the operating portion, and the pushing end extends into the operating portion, and the trigger is at the pressing end and the pressing end The pushing end is pivoted to the operating portion closer to the pushing end, and the pushing end can drive the front connecting rod and the rear connecting rod to move upward; wherein, when the pressing end of the trigger is directed Pressing in the direction of the grip, the pushing end pushing up the pivotal joint of the front link and the rear link, so that the front link urges the pushing portion of the push block toward the first end, Increasing the inclination of the push block relative to the push rod, and positioning the push rod by the first through hole, further pressing the trigger to further move the push block toward the first end direction, thereby driving the push rod to the first Move in one direction.

Thereby, the glue gun provided by the invention has a simple structure, is easy to manufacture and assemble, and is labor-saving and easy to operate, and is extremely practical.

10‧‧‧ Ontology

11‧‧‧Operation Department

12‧‧‧ grip

13‧‧‧Connecting piece

14‧‧‧stops

20‧‧‧Put

30‧‧‧ push block

31‧‧‧First perforation

32‧‧‧ Groove

33‧‧‧First elastic parts

413‧‧‧ horizontal axis

42‧‧‧ Rear Link

421‧‧‧ side

422‧‧ ‧Bridge

423‧‧‧ pivot

43‧‧‧Pushing wheel

44‧‧‧Top push

50‧‧‧ trigger

51‧‧‧ Press end

52‧‧‧ pusher

40‧‧‧ linkage group

41‧‧‧ front connecting rod

411‧‧‧ side

412‧‧ ‧Bridge

60‧‧‧Limited parts

61‧‧‧Second perforation

62‧‧‧Second elastic parts

70‧‧‧Cylinder

Figure 1 is a perspective view of the present invention.

Figure 2 is a perspective view of another angle of the present invention.

Figure 3 is a perspective exploded view of the present invention.

Figure 4 is a cross-sectional view of the present invention.

Figure 5 is a cross-sectional view of the present invention when the trigger is pressed.

Figure 6 is a cross-sectional view of the present invention when the stopper is pressed.

Figure 7 is a perspective view of a second embodiment of the present invention.

Figure 8 is a perspective exploded view of a second embodiment of the present invention.

Figure 9 is a cross-sectional view showing a second embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to FIG. 1 to FIG. 5 , the present invention provides a glue gun comprising a body 10 , a push rod 20 , a push block 30 , a link set 40 , a trigger 50 and a limiting member 60 .

The body 10 has a first end and a second end. The body 10 includes an operating portion 11 extending downwardly from the second end to form a grip 12. In this embodiment, the operating portion 11 is substantially squatted from the side, and an opening is formed between the lower end of the operating portion 11 near the first end and the upper end of the grip 12. The operating portion 11 is adjacent to the first portion. The lower end of the end is connected to the upper end of the grip 12 by a connecting piece 13.

The push rod 20 passes through the operating portion 11 along the direction in which the first end and the second end are connected. The pusher 20 is closer to the end of the first end for pushing the gel within the cartridge 70.

The push block 30 is located in the operating portion 11 and has a tendency to move toward the second end by the elastic force of a first elastic member 33. The push block 30 is formed with a first through hole 31, and the first through hole 31 is formed therein. The diameter of the push rod 20 is larger than the outer diameter of the push rod 20 and the push rod passes through the first through hole 31. The push block 30 has a pushing portion on a side facing away from the first elastic member 33, and the pushing portion is located at the first through hole. 31 below. In this embodiment, the operating portion 11 of the body 10 is provided with a stopper 14 near the second end, and the stopper 14 is abutted to the upper end of the push block 30, so that the upper end of the push block 30 cannot be The first elastic member 33 is excessively pushed toward the second end.

The connecting rod set 40 includes a front connecting rod 41, a rear connecting rod 42 and an pushing rod 43. One end of the rear connecting rod 42 is pivotally connected to the operating portion 11 near the second end, and the front connecting rod 41 is at one end. The pivoting rod 43 is pivotally connected to the rear connecting rod 42. The front connecting rod 41 is pivotally connected to the rear connecting rod 42. The front connecting rod 41 is abutted from the end of the rear connecting rod 42 to the pushing block. 30's push. Further, the front link 41 has a horizontal axis 413 away from the end of the rear link 42. The pushing portion of the push block 30 is a groove 32. The horizontal axis 413 is embedded in the groove. 32, and the front link 41 and the rear link 42 are angled upward, and the rear link 42 is pivotally disposed at the operating portion 11 near the second end by a pivot 423. In the present embodiment, the front link 41 and the rear link 42 are respectively formed by two side portions 411 and 421 and a bridge portion 412 and 422 connecting the two side portions 411 and 421.

The opposite ends of the trigger 50 are respectively a pressing end 51 and a pushing end 52. The pressing end 51 is far away from the operating portion 11 and the pushing end 52 extends into the operating portion 11 . The trigger 50 is at the pressing end 51 . The urging portion 11 is pivotally disposed with the urging portion 52 (in the present embodiment, the trigger 50 is pivoted on the connecting piece 13), and the pushing end 52 is abutted to The jacking wheel 43. When the trigger 50 is pressed to push the jacking wheel 43 upward, the pivot 423 The distance from the horizontal axis 413 increases, and the angle between the front link 41 and the rear link 42 becomes larger, wherein the angle is between 90 degrees and 120 degrees when the trigger 50 is not pressed.

The limiting member 60 is disposed outside the second end of the body 10 to conditionally restrict the push rod 20 from being pulled toward the second end. In this embodiment, the limiting member 60 has a second through hole 61. The push rod 20 passes through the second through hole 61. The inner diameter of the second through hole 61 is larger than the outer diameter of the push rod 20. The limiting member 60 A second elastic member 62 is disposed between the operating portion 11 and the upper end of the limiting member 60 is limited to the body 10 to swing the lower end of the limiting member 60. The second elastic member 62 causes the limiting member 60 to The lower end has a tendency to be away from the body 10. When the lower end of the limiting member 60 is not pressed toward the body 10, the second through hole 61 is inclined with respect to the push rod 20, so that the push rod 20 is the second through hole. When the lower end of the limiting member 60 is pressed toward the body 10, the second through hole 61 is inclined to be inclined relative to the push rod 20, so that the push rod 20 is not restricted by the second through hole 61, such as The inner diameter of the opening of the second through hole 61 of the limiting member 60 near the end of the body 10 is greater than the inner diameter of the opening of the one end away from the body 10. When the limiting member 60 is not pressed, The push rod 20 can be pulled by the push block 30 in the direction of the first end but cannot be pulled in the second end direction. In addition, the push rod 20 passes through the first elastic member 33 and the second elastic member 62, so that the first elastic member 33 and the second elastic member 62 can just push around the first through hole 31 and the second through hole 61.

When the pressing end 52 of the trigger 50 is pressed toward the grip 12, as shown in FIG. 5, the pushing end 52 pushes the pushing wheel 43 upward, so that the front link 41 faces the first end. The pushing portion of the push block 30 is urged to increase the inclination of the push block 30 relative to the push rod 20, so that the push rod 20 is positioned by the first through hole 31, and the trigger 50 is further pressed to make the push block 30 Further moving toward the first end direction, the push rod 20 is moved toward the first end, thereby pushing the glue in the rubber tube 70 forward. And when the push rod 20 has been pushed forward to the bottom, the limit piece can be pressed 60. At the same time, pull the rod 20 back toward the second end, so that the rod returns to the original position, as shown in FIG.

In another embodiment of the present invention, as shown in FIGS. 7-9, the pusher wheel is replaced by a pushing piece 44, and one end of the pushing piece 44 is pivotally connected to the front link 41 and the rear link 42. The other end is pivotally connected to the pushing end 52 of the trigger 50. When the trigger 50 is pressed, the pushing end 52 moves the pushing piece 44 upward, and the front link 41 and the rear link 42 are brought together. The pivotal position is moved upwards, and similarly to the previous embodiment, the pusher 20 can be moved forward.

The utility model provides the rubber gun with no stroke consumption between the connecting rods, which is labor-saving compared with the prior art. In addition, the invention has few connecting rods, simple connecting structure, is not only easy to manufacture and assemble, but also reduces malfunction or long time. The possibility of deterioration.

10‧‧‧ Ontology

11‧‧‧Operation Department

12‧‧‧ grip

20‧‧‧Put

30‧‧‧ push block

40‧‧‧ linkage group

41‧‧‧ front connecting rod

42‧‧‧ Rear Link

50‧‧‧ trigger

60‧‧‧Limited parts

70‧‧‧Cylinder

Claims (10)

A glue gun comprising: a body having an opposite first end and a second end, the body comprising an operating portion, the operating portion extending downwardly adjacent to the second end to form a grip; a rod passing through the operating portion along the line connecting the first end and the second end, wherein the push rod is closer to the end of the first end for pushing the glue in the rubber cylinder; The block is located in the operating portion and has a tendency to move toward the second end by the elastic force of a first elastic member. The push block is formed with a first through hole having an inner diameter larger than the outer diameter of the push rod and the push The rod passes through the first through hole, and the pushing block has a pushing portion on a side facing the second end, the pushing portion is located below the first through hole; a connecting rod group includes a front connecting rod and a rear connecting rod One end of the rear link is pivotally connected to the operating portion near the second end, and one end of the front link is pivotally connected to the rear link, and the front link is abutted from the end of the rear link to the push block. a pushing portion; a trigger, the opposite ends of the trigger are respectively a pressing end and a pushing end, the pressing end is far away from the The pushing end extends into the operating portion, and the trigger is pivoted to the operating portion between the pressing end and the pushing end, and the pushing end can drive the front connecting rod Moving upward with the rear link pivoting; wherein, when the pressing end of the trigger is pressed toward the grip, the pushing end pushes up the pivotal connection of the front link and the rear link Causing the front link to urge the pushing portion of the push block toward the first end direction to increase the inclination of the push block relative to the push rod, so that the push rod is positioned by the first through hole, and further pressing the trigger The push block is further moved toward the first end direction to drive the push rod to move toward the first end. The glue gun of claim 1, wherein the first elastic member is biased between the one surface of the first end and the operating portion, and the connecting rod group further comprises an pushing wheel, the pushing a wheel is disposed at a pivotal connection between the front connecting rod and the rear connecting rod, the pushing end of the trigger abutting the top pushing wheel, and the front connecting rod has a horizontal axis away from an end of the rear connecting rod, the pushing block The pushing portion is a groove, and the horizontal axis is embedded in the groove. The glue gun of claim 2, wherein the front link and the rear link are angled upward, and the rear link is pivoted to the operating portion near the second end by a pivot, when the trigger When pressed to push the pusher wheel upward, the distance between the pivot and the horizontal axis increases, and the angle between the front link and the rear link becomes larger. The glue gun of claim 3, wherein the angle is between 90 degrees and 120 degrees when the trigger is not pressed. The glue gun of claim 1, further comprising a limiting member disposed outside the second end of the body to conditionally restrict the push rod from being pulled toward the second end, wherein The limiting member has a second through hole, the push rod passes through the second through hole, the inner diameter of the second through hole is larger than the outer diameter of the push rod, and a second elastic member is sandwiched between the limiting member and the operating portion. The upper end of the limiting member is limited to the body to swing the lower end of the limiting member, and the second elastic member has a lower end of the limiting member with a tendency to be away from the body, when the lower end of the limiting member is not facing the body Pressing, the second through hole is inclined with respect to the push rod, so that the push rod is restrained by the second through hole, when the lower end of the limit member is pressed toward the body, the second through hole is inclined with respect to the push rod The degree is reduced so that the push rod is not restricted by the second perforation. The glue gun of claim 5, wherein an inner diameter of the opening of the second through hole of the limiting member near the end of the body is greater than an inner diameter of the opening of the one end away from the body, and when the limiting member is not pressed, the pushing The rod can be pulled by the push block in the direction of the first end but cannot be pulled in the direction of the second end. The glue gun of any one of claims 1 to 6, wherein the operating portion is provided with a stopper near the second end, the stopper is for abutting to the upper end of the push block, so that the push block is The upper end cannot be pushed excessively toward the second end by the first elastic member. The glue gun of any one of claims 1 to 6, wherein the front link and the rear link are respectively formed by two side portions and a bridge portion connecting the two side portions. The glue gun of any one of claims 1 to 6, wherein the push rod passes through the first elastic member and the second elastic member. The glue gun of any one of claims 1 to 6, wherein the operating portion is substantially squatted from the side, and an opening is formed between the lower end of the operating portion near the first end and the upper end of the grip. The lower end of the operating portion near the first end is connected with the upper end of the grip by a connecting piece, and the trigger is pivoted on the connecting piece.