TW202003115A - Caulking gun - Google Patents

Abstract

A caulking gun includes a main body, a pushing rod, a pushing element, a bar-linkage assembly, a pivot element, and a trigger. The main body is formed with a handle extending downward. The pushing element and the bar-linkage assembly are arranged in the main body. The restriction element is located at a rear end of the main body. The pushing rod is inserted through the restriction element, the main body, and the pushing element. The bar-linkage assembly includes two bars aligned horizontally but not parallel to each other. One of the bars abuts against the pushing element. The trigger is pivotally disposed on the main body, and one end of the trigger abuts against the pivot portion between the two bars. When the trigger is pulled, the roller is pushed upward by the trigger to push the pushing element forward via the bar-linkage assembly so that the pushing element is inclined to bring the pushing rod move forward. The pivot element is pivotally connected to the front bar with an end and is connected to the lower portion of the pushing element with the other end. When the trigger is released, the front bar pulls the lower portion of the pushing element back via the pivot element.

Description

Glue gun

The invention relates to a glue gun.

The glue gun is used to push out the colloid in the rubber barrel in sections. The conventional glue guns, such as those disclosed in patent TW M406469 or US 6,640,998, usually use a push block to match the connecting rod set. The connecting rod set is connected to the trigger. When the trigger is pressed ，Push the push block by the action of the connecting rod to drive the push rod to move forward. Among them, the triggers are directly pivotally connected to one of the connecting rods in the connecting rod set, so as to use the pressing pivot of the trigger to drive the connecting rod set to move.

However, the link mechanism composed of this link group and the trigger is limited by the swing amplitude and position of the trigger. The design and actuation trajectory of the link are very limited. The most important thing is that because of the full link mechanism The way of actuation is affected by the direction of the moving space and the direction of the force. A lot of the force of pressing the trigger will be lost on the useless force of the complex linkage relative to the action. To push the push rod forward, a larger force must be applied. More laborious.

In this regard, the glue gun disclosed in the patent TW I573633 improves the above-mentioned shortcomings by pushing the connecting rod set. However, its pushing block is not connected to the connecting rod set at all, and is only pressed against the horizontal axis. When the trigger is relaxed, the pushing block It may not be possible to synchronously return to the original position, which may cause the horizontal axis to fall, or even the remaining components to fall.

The main purpose of the present invention is to provide a glue gun with a simple structure and labor saving, and it is not easy to cause parts to be scattered and damaged.

To achieve the above object, the present invention provides a glue gun, which includes a body, a push rod, a push block, a connecting rod set, a pivoting member and a trigger.

The main body has a first end and a second end opposite to each other. The main body includes an operating portion, and the operating portion extends downward near the second end to form a grip; the push rod extends along the first end and the second end The connection direction of the end passes through the operation part, and the end of the push rod closer to the first end is used to push the colloid in a rubber cylinder; the push block is located in the operation part and is oriented by the elastic force of a first elastic member In the direction of the movement of the second end, the push block forms a first perforation, the inner diameter of the first perforation is greater than the outer diameter of the push rod and the push rod passes through the first perforation, the push block is oriented toward the second end A mask has a pushing part, the pushing part is located under the first perforation, and there is a stop part between the pushing part and the first perforation; the link group includes a front link and a rear link , One end of the rear link is pivotally connected to the operation portion near the second end, one end of the front link is pivotally connected to the rear link, the end of the front link away from the rear link is pressed against the push block The pushing part is blocked by the blocking part and cannot move further upward; one end of the pivoting member is pivotally connected to the front link, and the other end is connected to the lower end of the pushing block; the opposite ends of the trigger are: A pressing end and a pushing end, the pressing end is farther away from the operating part and the pushing end extends into the operating part, the trigger is closer to the pushing end and the pushing end between the pressing end and the pushing end The operation part is pivotally arranged, and the pushing end can drive the pivotal joint of the front link and the rear link to move upward.

Wherein, when the pressing end of the trigger is 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 is oriented toward the first end Pressing the pushing portion of the push block to increase the inclination of the push block relative to the push rod, so that the push rod is positioned by the first perforation, and further pressing the trigger causes the push block to be further directed toward the first end The movement pushes the push rod to move toward the first end; when the trigger is released, the front link pulls the lower end of the push block back toward the second end through the pivoting member.

In this way, the glue gun provided by the present invention has a simple structure, is easy to manufacture, saves labor and is easy to operate, and more importantly, does not cause the components to be scattered and cannot be used.

The following merely illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the invention to be protected, and will be described first.

Please refer to FIGS. 1 to 6, the present invention provides a glue gun, which includes a body 10, a push rod 20, a push block 30, a connecting rod set 40, a pivoting member 80 and a trigger 50.

The body 10 has a first end and a second end opposite to each other. The body 10 includes an operating portion 11 which extends downward near the second end to form a grip 12; the push rod 20 extends along the The connecting direction of the first end and the second end passes through the operation part 11, and the end of the push rod 20 closer to the first end is used to push the glue in a rubber cylinder 70; the push block 30 is located in the operation part 11 And the elastic force of a first elastic member 33 tends to move toward the second end. The push block 30 has a first through hole 321 whose inner diameter is greater than the outer diameter of the push rod 20 and the push The rod 20 passes through the first through hole 321, and the pushing block 30 has a pushing portion on a mask facing the second end. The pushing portion is located below the first through hole 321. The pushing portion and the first through hole 321 There is also a stop portion 312; the link group 40 includes a front link 41 and a rear link 42, one end of the rear link 42 is pivotally connected to the operating portion 11 near the second end, the front link One end of the lever 41 is pivotally connected to the rear link 42, and the end of the front link 41 away from the rear link 42 abuts against the pushing portion of the push block 30 and is blocked by the blocking portion 312 so that it cannot go further Move up; one end of the pivoting member 80 is pivotally connected to the front link 41, the other end is connected to the lower end of the push block 30; the opposite ends of the trigger 50 are a pressing end 51 and a pushing end 52, respectively The pressing end 51 is farther away from the operating part 11 and the pushing end 52 extends into the operating part 11. The trigger 50 is closer to the pushing end 52 and the operating part between the pressing end 51 and the pushing end 52. 11 pivotally arranged, the pushing end 52 can drive the pivotal movement of the front link 41 and the rear link 42 upward.

Wherein, when the pressing end 51 of the trigger 50 is pressed in the direction of the grip 12, the pushing end 52 pushes up the pivotal joint of the front link 41 and the rear link 42 to make the front link 41 pushes the pushing portion of the push block 30 toward the first end, so that the tilt of the push block 30 relative to the push rod 20 is increased, and the push rod 20 is positioned by the first through hole 321, and the trigger is further pressed 50 causes the push block 30 to be further moved in the direction of the first end, thereby driving the push rod 20 to move in the direction of the first end; when the trigger 50 is relaxed, the front link 41 is moved by the pivot 80 The lower end of the push block 30 is pulled back toward the second end.

In this embodiment, the pivoting member 80 includes a front stop 81 and a pivot arm 82. The front stop 81 is disposed at the front end of the push block 30. One end of the pivot arm 82 is connected to the front stop The other end of the portion 81 is pivotally connected to the front link 41. Further, the push block 30 includes a base 31 and a piece 32. The base 31 is disposed at the bottom end of the piece 32, and the base 31 faces the front One side of the connecting rod 41 has the pushing portion and the stopping portion 312, the piece 32 has the first through hole 321, and the front connecting portion 811 of the pivoting member 80 is provided on the front end surface of the piece 32, preferably The pivoting member 80 further includes a positioning hook arm 83, and a surface of the front stop 81 facing the sheet body 32 of the push block 30 is concavely provided with a receiving groove 811, the shape of the receiving groove 811 corresponds to the sheet body 32, the The sheet body 32 is at least partially embedded in the receiving slot 811, the positioning hook arm 83 is connected to the side of the front stop 81 opposite to the pivot arm 82, the positioning hook arm 83 extends to the sheet body 32 facing away from the front stop One side of the portion 81 is used to position the sheet body 32.

In addition, the first elastic member 33 springs against a surface of the pushing block 30 facing the first end and the operating portion 11, the link group 40 further includes a pushing wheel 43, and the pushing wheel 43 is disposed at Where the front link 41 is pivotally connected to the rear link 42, the pushing end 52 of the trigger 50 abuts the pushing wheel 43, and the end of the front link 41 farther away from the rear link 42 has a transverse axis 411 The pushing part of the pushing block 30 is a groove 311, and the horizontal shaft 411 is embedded in the groove 311; the front link 41 and the rear link 42 are angled upward, and the rear link 42. A pivot 421 is pivotally disposed at the operation portion 11 near the second end. When the trigger 50 is pressed and the pushing wheel 43 is pushed upward, the pivot 411 and the transverse axis 421 The distance increases, and the angle between the front link 41 and the rear link 42 becomes larger.

On the other hand, a limiter 60 is further included. The limiter 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, wherein the limit The positioning 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, and the limiting member 60 is sandwiched between the operating portion 11 There is a second elastic member 62, the upper end of the limiting member 60 is limited to the body 10 so that the lower end of the limiting member 60 can swing, the second elastic member 62 makes the lower end of the limiting member 60 tend to move 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 limited by the second through hole 61 when the limiting position The lower end of the member 60 is pressed toward the body 10, and the second through hole 61 is inclined with respect to the push rod 20, so that the push rod 20 is not limited by the second through hole 61; preferably, the limiting member 60 The inner diameter of the opening of the second through hole 61 close to the body 10 is greater than the inner diameter of the opening away from the body 10, when the stopper 60 is not pressed, the push rod 20 can be moved to the first by the push block 30 Pull in the end direction but cannot be pulled in the second end direction.

7 and FIG. 8, in another embodiment of the present invention, one end of the pivoting member 80a is pivotally connected to the side of the front link 41, and the other end is pivotally connected to the side of the push block 30. The pushing block 30 includes a base 31 and a piece 32. The base 31 is disposed at the bottom end of the piece 32. The side of the base 31 facing the front link 41 has the pushing portion and the blocking portion. The piece 32 has the first through hole, and one end of the pivoting member 80 is pivotally connected to the side of the base 31.

In actual use, 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 upwards, so that the front link 41 faces The first end direction pushes the pushing portion of the pushing block 30 to increase the inclination of the pushing block 30 relative to the pushing rod 20, so that the pushing rod 20 is positioned by the first through hole 31, and further press the trigger 50 to make The push block 30 is further moved toward the first end, and then the push rod 20 is moved toward the first end, thereby pushing the colloid in the plastic cylinder 70 forward. When the push rod 20 has been pushed forward to the bottom, the limiting member 60 can be pressed, and at the same time, the pull rod 20 is pulled back toward the second end, so that the pull rod can return to the original position, as shown in FIG. 6.

In particular, since the push block 30 and the front link 41 are connected by the pivoting member 80, when the current link 41 returns to the original position, the push block 30 will be pulled back together, so that It can prevent the horizontal shaft 411 from escaping from the groove 311, ensure the connection relationship of each component, and can be continuously used smoothly.

In summary, the glue gun provided by the present invention is relatively labor-saving and easy to manufacture. The most important thing is that the horizontal axis of the front link will not be separated from the push block, which can prevent the front link from falling off and cannot be used, ensuring a smooth and continuous use.

10‧‧‧Body 11‧‧‧Operation part 12‧‧‧Handle 20‧‧‧Push bar 30‧‧‧Push block 31‧‧‧Base 311‧‧‧Groove 312‧‧‧Block 32‧‧ ‧Piece body 321‧‧‧First perforation 33‧‧‧First elastic member 40‧‧‧Link group 41‧‧‧Front link 411‧‧‧Transverse axis 42‧‧‧Rear link 421‧‧‧ pivot Shaft 43‧‧‧Pushing wheel 50‧‧‧ Trigger 51‧‧‧Pressing end 52‧‧‧Pushing end 60‧‧‧Limiting piece 61‧‧‧Second perforation 62‧‧‧Second elastic piece 70‧ ‧‧Cylinder 80, 80a‧‧‧Pivot joint 81‧‧‧Front stop 811‧‧‧slot 82 82‧‧‧Pivot arm 83‧‧‧Locating hook arm

Figure 1 is a perspective view of the present invention. 2 is a perspective view of the present invention from another angle. Fig. 3 is an exploded perspective view of the present invention. 4 and 5 are schematic diagrams of the operation of the present invention. 6 is a cross-sectional view of the present invention. 7 and 8 are schematic diagrams of the operation of the second embodiment of the present invention.

10‧‧‧Body

11‧‧‧Operation Department

12‧‧‧grip

20‧‧‧Putter

30‧‧‧Push block

40‧‧‧Link

41‧‧‧Front link

42‧‧‧ Rear connecting rod

50‧‧‧trigger

52‧‧‧ Push end

60‧‧‧Limiting parts

70‧‧‧ Rubber cartridge

80‧‧‧Pivot

81‧‧‧Front stop

82‧‧‧Pivot arm

Claims (10)

A glue gun includes: a body having a first end and a second end opposite to each other, the body includes an operation portion, and the operation portion extends downward near the second end to form a grip; a push A push rod, the push rod passes through the operation part along the connecting direction of the first end and the second end, and the end of the push rod closer to the first end is used to push the colloid in a rubber cylinder; a push block, the push The block is located in the operating portion and is subject to the elastic force of a first elastic member to move toward the second end. The push block is formed with a first perforation whose inner diameter is greater than the outer diameter of the push rod and the push The rod passes through the first perforation, the pushing block has a pushing portion on a mask facing the second end, the pushing portion is located below the first perforation, and there is a stop between the pushing portion and the first perforation Stop part; a connecting rod set, including a front connecting rod and a rear connecting rod, one end of the rear connecting rod is pivotally connected to the operating part near the second end, and one end of the front connecting rod is pivotally connected to the rear connecting rod, The end of the front link away from the rear link presses against the pushing portion of the push block and is blocked by the blocking portion so that it cannot move further upwards; a pivot piece, one end of which is pivotally connected to the front link The other end of the lever is connected to the lower end of the push block; a trigger, the opposite ends of the trigger are a pressing end and a pushing end respectively, the pressing end is farther away from the operating part and the pushing end extends into the operating part, The trigger is pivotally arranged between the pressing end and the pushing end closer to the pushing end and the operating part, and the pushing end can drive the pivotal connection of the front link and the rear link to move upward; wherein , When the pressing end of the trigger is pressed in the direction of the grip, the pushing end pushes the pivotal joint of the front link and the rear link upward, so that the front link is pushed toward the first end Forcing the pushing portion of the push block to increase the inclination of the push block relative to the push rod, so that the push rod is positioned by the first perforation, and further pressing the trigger causes the push block to be further moved toward the first end Then, the push rod is moved toward the first end; wherein, when the trigger is released, the front link pulls the lower end of the push block back toward the second end through the pivoting member. The glue gun according to claim 1, wherein the pivoting member includes a front stopper and a pivoting arm, the front stopper is disposed on the front end surface of the push block, and one end of the pivoting arm is connected to the front stopper , The other end is pivotally connected to the front link. The glue gun according to claim 2, wherein the push block includes a base and a piece, the base is disposed at the bottom end of the piece, and the side of the base facing the front link has the pushing portion and the stopper The first body has the first perforation, and the front stop of the pivoting member is provided on the front end surface of the body. The glue gun according to claim 1, wherein one end of the pivoting member is pivotally connected to the side of the front link, and the other end is pivotally connected to the side of the push block. The glue gun according to claim 4, wherein the push block includes a base and a piece, the base is provided at the bottom end of the piece, and the side of the base facing the front link has the pushing portion and the stopper In the portion, the sheet body has the first perforation, and one end of the pivoting member is pivotally connected to the side of the base. The glue gun according to any one of claims 1 to 5, wherein the first elastic member springs against a surface of the push block facing the first end and the operating portion, and the connecting rod set further includes a top A pushing wheel, the pushing wheel is arranged at the pivotal connection of the front link and the rear link, the pushing end of the trigger is pressed against the pushing wheel, and the end of the front link farther from the rear link has a horizontal The shaft, the pushing portion of the pushing block is a groove, and the horizontal shaft is embedded in the groove. The glue gun according to claim 6, wherein the front link and the rear link are at an angle upward, and the rear link is pivotally arranged at the operating portion near the second end by a pivot, when the trigger When the pushing wheel is pushed up by being pressed, 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 according to any one of claims 1 to 5, further comprising a limiter, the limiter is disposed outside the second end of the body to conditionally restrict the push rod from being moved to the first Pulling at both ends, wherein the limiting member has a second perforation, the push rod passes through the second perforation, the inner diameter of the second perforation is greater than the outer diameter of the push rod, and the limiting member is clamped between the operating part There is a second elastic member, the upper end of the limiting member is limited to the body so that the lower end of the limiting member can swing, the second elastic member makes the lower end of the limiting member tend to move away from the body, when the limiting member The lower end is not pressed toward the body, the second perforation is inclined with respect to the push rod, so that the push rod is limited by the second perforation, and when the lower end of the limiting member is pressed toward the body, the second The inclination of the perforation relative to the push rod is reduced, so that the push rod is not limited by the second perforation. The glue gun according to claim 8, wherein the inner diameter of the opening of the second perforation of the limiting member near the body is greater than the inner diameter of the opening of the opening away from the body, when the limiting member is not pressed, the push rod It can be pulled towards the first end by the push block but cannot be pulled towards the second end. The glue gun according to claim 3, wherein the pivoting member further comprises a positioning hook arm, and a surface of the front block facing the piece of the push block is concavely provided with a receiving groove, and the shape of the receiving groove corresponds to the piece , The sheet body is at least partially embedded in the receiving slot, the positioning hook arm is connected to the side of the front stop portion opposite to the pivot arm, the positioning hook arm extends to the side of the sheet body facing away from the front stop portion for positioning The sheet body; the first elastic member springs against a surface of the push block facing the first end and the operating portion, the link group further includes a push wheel, the push wheel is disposed on the front link At the pivotal connection with the rear link, the pushing end of the trigger abuts the pushing wheel, the end of the front link farther from the rear link has a horizontal axis, and the pushing portion of the push block is a concave Groove, the horizontal axis is embedded in the groove; the glue gun further includes a limiter, the limiter is located outside the second end of the body to conditionally restrict the push rod to the first Pulling at both ends, wherein the limiting member has a second perforation, the push rod passes through the second perforation, the inner diameter of the second perforation is greater than the outer diameter of the push rod, and the limiting member is clamped between the operating part There is a second elastic member, the upper end of the limiting member is limited to the body so that the lower end of the limiting member can swing, the second elastic member makes the lower end of the limiting member tend to move away from the body, when the limiting member The lower end is not pressed toward the body, the second perforation is inclined with respect to the push rod, so that the push rod is limited by the second perforation, and when the lower end of the limiting member is pressed toward the body, the second The inclination of the perforation relative to the push rod is reduced, so that the push rod is not limited by the second perforation; the inner diameter of the opening of the second perforation of the limiting member close to the body is larger than that of the opening away from the body When the limiting member is not pressed, the push rod can be pulled toward the first end by the push block but cannot be pulled toward the second end.

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