TWI581869B - 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.

On the other hand, although the patent TWM528796 improves the above problems, the connecting rod and the pushing block for pulling the push rod are simply pushed against the top, and the front end of the connecting rod may be detached from the pushing block and detached upward. Loss of the effect of pushing the putter forward.

The main object of the present invention is to provide a glue gun which can prevent the connecting rod from coming off the push block and maintain a good interlocking effect.

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

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 glue 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, the pushing portion is located below the first through hole, and has a stopping portion between the pushing portion and the first through hole; the 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. The pushing portion is blocked by the stopping portion and cannot move further upward; the opposite ends of the trigger are respectively a pressing end a pushing end, the pressing end is far away from the operating portion, and 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. The pushing end can drive the front link and the rear link to move upward.

Wherein, when the pressing end of the trigger is pressed toward the grip direction, the pushing end pushes up the pivotal joint of the front connecting rod and the rear connecting rod, so that the front connecting rod faces the first end direction Pushing the pushing portion of the push block to increase 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 push the push block toward the first end Moving, thereby driving the push rod to move toward the first end.

Thereby, the front link can be blocked by the blocking portion and cannot move further relative to the push block, thereby preventing the front link from being displaced from the push block to maintain a smooth interlocking action.

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 and a trigger 50 .

The body 10 has an opposite 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; the push rod 20 is along the The first end and the second end are connected to the operating portion 11 , and the end of the push rod 20 is closer to the first end for pushing the glue in the rubber cylinder; the push block 30 is located in the operating portion 11 and The push block 30 is formed with a first through hole 311. The inner diameter of the first through hole 311 is larger than the outer diameter of the push rod 20 and the push rod is inclined to be moved toward the second end by the elastic force of the first elastic member 14. The through hole 311 has a pushing portion on the side facing the second end, and the pushing portion is located below the first through hole 311, and between the pushing portion and the first through hole 311 The connecting rod set 40 includes a front connecting rod 41 and a rear connecting rod 42. One end of the rear connecting rod 42 is pivotally connected to the operating portion 11 near the second end. The front connecting rod 41 One end is pivotally connected to the rear connecting rod 42 , and one end of the front connecting rod 41 away from the rear connecting rod 42 abuts against the pushing portion of the push block 30 and is blocked by the stopping portion. Moving upwards in a step; the opposite ends of the trigger 50 are respectively a pressing end 51 and a pushing end 52. The pressing end 51 is farther away from the operating portion 11 and the pushing end 52 extends into the operating portion 11, the trigger 50 The operating portion 11 is pivoted between the pressing end 51 and the pushing end 52. (In the embodiment, a second elastic member 53 is disposed on the grip 12 and the trigger Between 50, the pressing end 51 of the trigger 50 has a tendency to move away from the grip 12, and the pushing end 52 can drive the front link 41 and the rear link 42 to pivot upward. Wherein, when the pressing end 51 of the trigger 50 is pressed toward the grip 12, the pushing end 52 pushes up the pivotal connection of the front link 41 and the rear link 42 to make the front connection The rod 41 urges the pushing portion of the pushing block 30 toward the first end direction, so that the pushing block 30 is inclined relative to the pushing rod 20, and the push rod 20 is positioned by the first through hole 311, and the pressing portion is further pressed. The trigger 50 further moves the push block 30 toward the first end, thereby driving the push rod 20 to move toward the first end.

In addition, the glue gun further includes a limiting member 60. The limiting member 60 is disposed outside the second end of the body 10 to conditionally restrict the pulling rod from being pulled toward the second end. 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 upper end of the limiting member 60 is limited to the The lower end of the limiting member 60 is oscillating. The lower end of the limiting member 60 has a tendency to be away from the body 10. When the lower end of the limiting member 60 is not pressed in the direction of the body 10, the second through hole 61 is opposite. The push rod 20 is inclined, so that the push rod 20 is restrained by the second through hole 61. When the lower end of the limiting member 60 is pressed toward the body 10, the second through hole 61 is inclined with respect to the push rod 20. Lowering, the push rod 20 is not restricted by the second through hole 61. Preferably, the inner diameter of the opening of the second through hole 61 of the limiting member 60 near the one 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 The push block 30 is pulled toward the first end but cannot be pulled in the second end direction.

In this embodiment, the push block 30 includes an insert 31 and a base 32. The insert 31 includes a bottom portion 312 and a top portion 313. The first through hole 311 is formed between the bottom portion 312 and the top portion 313. 32 has a slot 322. The insert 31 is disposed in the slot 322 with its bottom portion 312. The pushing portion is formed by a lateral long slot 321 formed in the base 32. The upper edge of the long slot 321 forms the same. The first slot 13 is disposed in the operating portion 11 of the body 10, the first elastic member 14 is abutted between a side of the top portion 313 of the insert 31 facing the second end and the seat member 13. The link set 40 further includes a pushing wheel 43 disposed on the front link 41 The pivoting end 52 of the trigger 50 abuts against the pushing wheel 43. Preferably, the two sides of the bottom 312 of the insert 31 respectively form a side recess 3121, and the base 32 is inserted. A side protrusion 3221 is formed on each of the two sides of the groove 322, and the insert 31 is positioned by the two side recesses 3121 and the two side protrusions 3221 of the base 32.

In addition, 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 when the trigger 50 is pressed. When the pushing wheel 43 is pushed up, the distance between the pivot 423 and the horizontal axis 413 increases, and the angle between the front link 41 and the rear link 42 becomes larger, preferably, when When the trigger 50 is not pressed, the angle is between 90 degrees and 120 degrees.

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.

Referring to FIG. 6 to FIG. 8 again, in another embodiment of the present invention, the push block 30a is an integrally formed body, and the bottom portion of the push block 30a has a lateral long groove 32a forming the pushing portion, and the length is long. The upper edge of the groove 32a forms the stopping portion, and a surface of the top of the pushing block 30a facing the second end is formed with a protrusion 33a for the horizontal axis 413 to abut, and the first elastic member 14 is elastically biased The bump 33a is between the seat member 13.

However, in other possible embodiments of the present invention, the blocking portion may also be a protruding structure to prevent the horizontal axis from moving upward.

With the above structure, when the pressing end 52 of the trigger 50 is pressed toward the grip 12, as shown in FIG. 4, the pushing end 52 pushes the pushing wheel 43 upward, so that the front link 41 is pushed up. Pushing the pushing portion of the push block 30 toward the first end direction 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 holes 311, 31a, and further pressing the push rod 20 The trigger 50 further moves the push block 30 toward the first end, thereby driving the push rod 20 to move toward the first end, thereby pushing the colloid in the cartridge forward. When the push rod 20 has been pushed forward to the bottom, the limit member 60 can be pressed, and the pull rod 20 is pulled back toward the second end to return the pull rod to the original position.

In summary, the glue gun provided by the invention has the functions of labor saving and high efficiency, and can avoid the power consumption caused by too much pivotal connection of the connecting rod, and can prevent the upward separation of the connecting rod due to the reduction of the pivotal connection of the connecting rod, and is highly advanced. effect.

10‧‧‧ Ontology
11‧‧‧Operation Department
12‧‧‧ grip
13‧‧‧ pieces
14‧‧‧First elastic parts
20‧‧‧Put
30, 30a‧‧‧ push block
31‧‧‧ plugin
311, 31a‧‧‧ first perforation
312‧‧‧ bottom
3121‧‧‧Side recess
313‧‧‧ top
32‧‧‧Base
321, 32a‧‧‧ long slot
322‧‧‧ slots
3221‧‧‧Side
33a‧‧‧Bumps
40‧‧‧ linkage group
41‧‧‧ front connecting rod
411‧‧‧ side
412‧‧ ‧Bridge
413‧‧‧ horizontal axis
42‧‧‧ Rear Link
421‧‧‧ side
422‧‧ ‧Bridge
423‧‧‧ pivot
43‧‧‧Pushing wheel
50‧‧‧ trigger
51‧‧‧ Press end
52‧‧‧ pusher
53‧‧‧Second elastic parts
60‧‧‧Limited parts
61‧‧‧Second perforation

Figure 1 is a perspective view of the present invention. Figure 2 is a perspective exploded view of the present invention. Figure 3 is a cross-sectional view of the present invention. Figure 4 is a schematic illustration of the operation of the present invention. Figure 5 is a perspective view of a push block of the first embodiment of the present invention. Figure 6 is a perspective view of a push block of a second embodiment of the present invention. Figure 7 is a cross-sectional view showing a second embodiment of the present invention. Figure 8 is a schematic view showing the operation of the second embodiment of the present invention.

10‧‧‧ Ontology

11‧‧‧Operation Department

12‧‧‧ grip

13‧‧‧ pieces

14‧‧‧First elastic parts

20‧‧‧Put

30‧‧‧ push block

31‧‧‧ plugin

32‧‧‧Base

40‧‧‧ linkage group

41‧‧‧ front connecting rod

42‧‧‧ Rear Link

50‧‧‧ trigger

60‧‧‧Limited parts

61‧‧‧Second perforation

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, the push rod being closer to the end of the first end for pushing the glue in a 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 a rod passing through the first through hole, the pushing block having a pushing portion on a side facing the second end, the pushing portion being located below the first through hole, and having a block between the pushing portion and the first through hole a link group includes a front link and a rear link, wherein 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. One end of the front link away from the rear link abuts against the pushing portion of the push block and is blocked by the stop portion Further moving upward; 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 operating portion and the pushing end extends into the operating portion, the trigger is at 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 Pressed in the direction of the grip, the pushing end pushes up the pivotal joint of the front link and the rear link, so that the front link pushes the push of the push block toward the first end. a portion for 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 toward The first end moves in the direction. The glue gun of claim 1, wherein the push block comprises a plug and a base, the insert comprises a bottom and a top, the first through hole is formed between the bottom and the top, the base has a slot The insert is disposed in the slot with a bottom insertion portion thereof, and the pushing portion is formed by the lateral long groove, and the upper edge of the long groove forms the stopping portion, and the long groove is provided for the front connecting rod One of the ends of the rear link is abutted against the top of the rear axle, and a piece is disposed in the operating portion of the body. The first elastic member is biased between the side of the top of the insert facing the second end and the seat. The connecting rod set further includes a pushing wheel, and the pushing wheel is disposed at a pivotal connection between the front connecting rod and the rear connecting rod, and the pushing end of the trigger abuts the top pushing wheel. The glue gun of claim 2, wherein the two sides of the bottom of the insert form a side recess, and the two sides of the slot of the base respectively form a side protrusion, and the insert has the two side recesses and the base The two side protrusions are positioned against each other. 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, wherein the bottom of the push block has a lateral long groove forming the pushing portion, and the upper edge of the long groove forms the stopping portion, the top of the pushing block facing the second One side of the end is formed with a protrusion for abutting the front link away from a horizontal axis of one end of the rear link, and a piece is disposed in the operating portion of the body, the first elastic member is elastically opposed to the Between the bump and the seat member, the link set further includes a pushing wheel, the pushing wheel is disposed at a pivotal connection between the front connecting rod and the rear connecting rod, and the pushing end of the trigger abuts the pushing wheel. 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 second through hole has an inner diameter larger than the outer diameter of the push rod, and the upper end of the limiting member is limited to the lower end of the body for the limiting member The lower end of the limiting member has a tendency to be away from the body, and when the lower end of the limiting member is not pressed toward the body, the second through hole is inclined with respect to the pushing rod, so that the pushing rod is the second The perforation limit is when the lower end of the limiting member is pressed toward the body, and the second through hole is inclined relative to the push rod, so that the push rod is not restricted by the second perforation. The glue gun of claim 7, wherein the second perforation of the limiting member is closer to the inner diameter of the opening of the body than the opening of the one end away from the body, and when the limiting member is not pressed, the push rod The push block can be pulled toward the first end but cannot be pulled toward the second end. The glue gun of any one of claims 1 to 8, 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 8, further comprising a second elastic member disposed between the grip and the trigger to move the pressing end of the trigger away The tendency of the grip to move in the direction.