Efficient anti-overflow glue gun

Abstract

The utility model relates to an efficient anti-overflow glue gun which comprises a bracket and a handle assembly, the handle assembly comprises a shell, a driving trigger, a push rod and a push rod driving assembly, the top end of the driving trigger is in contact with the push rod driving assembly, and the push rod driving assembly is connected with the push rod. The push rod retreating assembly is arranged in front of the push rod driving assembly, the push rod retreating assembly and the push rod driving assembly are installed in the shell, the push rod retreating assembly comprises a first spring and a blocking piece, the blocking piece is in sliding fit with the push rod, and one end of the first spring is fixedly connected with the lower end of the blocking piece while the other end is fixedly connected with the shell in front of the first spring; a return trigger is arranged below the push rod return assembly, and the top end of the return trigger makes contact with the rear side of the blocking piece. According to the efficient anti-overflow glue gun, the return mechanism which is reasonable in layout and easy to operate is designed, the user experience and the working efficiency are improved, an operator can easily operate the return mechanism to control the push rod to return in time when glue is paused, and therefore glue is prevented from overflowing.

Description

Technical Field

[0001] This utility model relates to the field of glue application tools, and in particular to a high-efficiency anti-overflow glue gun. Background Technology

[0002] A glue gun is a tool specifically designed for applying glue, widely used in construction, decoration, and home furnishing industries. The glue gun handle is an important component, used by the user to control the glue extrusion action.

[0003] During the glue application process, the trigger on the glue gun handle is manually pulled. The trigger pushes the plunger to apply pressure to the back cover of the glue tube, thus dispensing the glue. Because there is a certain pressure inside the glue tube, even if pressure is not continuously applied to the trigger during glue application pauses, the glue will continue to overflow due to the pressure. This not only leads to material waste but may also adversely affect subsequent glue application operations.

[0004] Modern glue guns are typically designed with a retraction mechanism that allows the plunger to move backward a certain distance. This is intended to free up some space inside the glue tube, reducing internal pressure and preventing glue spillage. However, this retraction mechanism is usually installed at the end of the plunger, with a certain gap between it and the trigger. This layout makes using the retraction mechanism inconvenient and requires considerable physical effort, directly impacting the user experience and work efficiency. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide an efficient anti-overflow glue gun, and to design a reasonable layout and easy-to-operate retraction mechanism to improve user experience and work efficiency, so that the operator can easily operate the retraction mechanism to control the push rod to retract in time when the glue application is paused, thereby preventing glue from overflowing.

[0006] To solve the above-mentioned technical problems, this utility model proposes a high-efficiency anti-overflow glue gun, adopting the following technical solution:

[0007] A high-efficiency anti-overflow glue gun includes a bracket and a handle assembly. The bracket is fixedly installed in front of the handle assembly. The handle assembly includes a housing, a drive trigger, a push rod, and a push rod drive assembly. The drive trigger is rotatably connected to the housing, and the top of the drive trigger contacts the push rod drive assembly. The push rod drive assembly is connected to the push rod, and the push rod slides in engagement with the housing and the bracket. The gun also includes a push rod retraction assembly, which is located in front of the push rod drive assembly and both are installed inside the housing. The push rod retraction assembly includes a first spring and a stop plate. The stop plate slides in engagement with the push rod. One end of the first spring is fixedly connected to the lower end of the stop plate, and the other end is fixedly connected to the housing in front of the first spring. A retraction trigger is located below the push rod retraction assembly and is rotatably connected to the housing. The top of the retraction trigger contacts the rear side of the stop plate.

[0008] This structure allows the operator to quickly and easily operate the retraction trigger after applying the adhesive, retracting the push rod a certain distance and effectively preventing adhesive spillage. Specifically, previously, to prevent adhesive spillage, a retraction mechanism was typically installed at the end of the push rod. However, this method is inconvenient and sometimes fails to achieve a noticeable retraction effect. In this design, the retraction mechanism consists of a push rod retraction assembly and a retraction trigger. The push rod retraction assembly is positioned in front of the push rod drive assembly, and both are controlled by separate retraction and drive triggers, ensuring the retraction trigger is positioned in front of the drive trigger. This design allows the operator to easily operate the retraction trigger by simply moving their finger slightly forward after releasing the drive trigger, thus controlling the push rod to retract promptly. This method is more labor-saving and easier to operate, improving the user experience and increasing work efficiency. The push rod retraction assembly consists of a stop plate and a first spring, providing a stable structure that controls the push rod's retraction distance and provides a good retraction effect.

[0009] Furthermore, the housing is provided with a first receiving groove and a second receiving groove. The push rod retraction assembly and the push rod drive assembly are respectively disposed in the first receiving groove and the second receiving groove. The first spring is fixedly connected to the front end of the first receiving groove, and the upper end of the baffle is in non-fixed contact with the first receiving groove. Since the top of the retraction trigger is in contact with the lower rear end of the baffle, when force is applied to the retraction trigger, the lower end of the baffle will move forward, while the upper end of the baffle remains in non-fixed contact with the first receiving groove, so the upper end of the baffle will not displace. This causes the lower end of the baffle to first jam the push rod after moving forward, and then release the retraction trigger. The baffle will move backward under the action of the first spring, thereby driving the push rod to retract a certain distance. One end of the first spring is fixedly connected to the lower end of the baffle, and the other end is fixedly connected to the front end of the first receiving groove, ensuring that the baffle can move and compress the first spring when subjected to force. When the external force dissipates, the elastic force of the first spring will quickly cause the baffle to return to its initial position.

[0010] Preferably, two arc-shaped clamping parts are symmetrically arranged at the upper end of the first receiving groove. These two arc-shaped clamping parts together press against the upper end of the baffle plate, while the lower end of the baffle plate rests against the rear wall of the first receiving groove under the action of a first spring. The two symmetrically arranged arc-shaped clamping parts together press against the upper end of the baffle plate, making point contact with the baffle plate. This ensures that when the retracting trigger pushes the lower end of the baffle plate forward, the upper end of the baffle plate will only rotate slightly without displacement, thus cooperating with the first spring to act on the baffle plate. Meanwhile, the lower end of the baffle plate rests against the rear wall of the first receiving groove under the action of a limiting spring. The limiting spring provides a continuous pushing force, allowing the lower end of the baffle plate to adhere to the rear wall of the first receiving groove, preventing the baffle plate from loosening.

[0011] Preferably, the push rod drive assembly includes a push plate and a second spring. The second spring is slidably engaged with the push rod. One end of the second spring is fixedly connected to the front end of the second receiving groove, and the other end of the second spring is fixedly connected to the push plate. Under the action of the second spring, the push plate rests against the rear side of the second receiving groove, and the top of the drive trigger contacts the lower rear end of the push plate. When the drive trigger is pulled, the push rod drive assembly drives the push rod forward, thereby pushing out the adhesive in the tube. The sliding engagement between the second spring and the push rod ensures that the push rod can advance smoothly and steadily.

[0012] Preferably, the baffle plate has a first opening, and the push plate has a second opening, with both openings slidingly engaging with the push rod. The diameters of the first and second openings can be slightly larger than the diameter of the push rod. This way, when the trigger moves the push plate forward, the force applied to the lower end of the push plate causes it to tilt slightly, allowing the second opening to lock the push rod and propel it forward. Similarly, when the trigger is released, the baffle plate moves forward, locking the push rod in the first opening. Releasing the trigger at this point allows the baffle plate to return to its original position under the action of the first spring, thus retracting the push rod. Furthermore, setting the diameter of the second opening slightly larger than the push rod diameter ensures that the push rod is not obstructed during retraction, achieving the desired effect.

[0013] Preferably, a retaining sleeve extends from the rear end of the housing, and the retaining sleeve slides into the push rod. The design of the retaining sleeve provides good positioning and support for the push rod, allowing it to move horizontally when moving forward or backward, which is beneficial for controlling the amount and speed of glue dispensed.

[0014] Preferably, the front end of the housing extends into a mounting section, which slides into the push rod. The rear end of the bracket has a mounting hole that is fixedly engaged with the mounting section. The mounting section serves a positioning function, allowing the bracket to engage with it through the mounting hole. The mounting hole, mounting section, and push rod are always aligned on the same axis, preventing installation deviations.

[0015] Preferably, a fastener is also included, which is threadedly connected to the mounting part and secures the bracket to the housing. The presence of the fastener ensures that the bracket is firmly fixed to the housing, and compared to welding, this connection method is more flexible, allowing for the removal and fixing of the bracket.

[0016] In summary, this highly efficient anti-overflow glue gun features a rationally designed and easy-to-operate retraction mechanism, which improves user experience and work efficiency. It allows operators to easily operate the retraction mechanism to control the push rod to retract in a timely manner when glue application is paused, thereby preventing glue overflow. Attached Figure Description

[0017] The utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the handle assembly of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall assembly structure of this utility model. Figure 2 ;

[0021] Figure 4 This is a partial sectional view of the present invention;

[0022] The components include: housing-1, first receiving groove-11, arc-shaped clamping part-111, second receiving groove-12, fixing sleeve-13, mounting part-14, drive trigger-2, push rod-3, push rod drive assembly-4, push plate-41, second opening-411, second spring-42, push rod retraction assembly-5, first spring-51, baffle-52, first opening-521, retraction trigger-6, bracket-7, mounting hole-71, and fixing part-8. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 and Figure 2The high-efficiency anti-overflow glue gun shown includes a housing 1, a drive trigger 2, a push rod 3, and a push rod drive assembly 4. The drive trigger 2 is rotatably connected to the housing 1, and the top of the drive trigger 2 contacts the push rod drive assembly 4. The push rod drive assembly 4 is connected to the push rod 3, and the push rod 3 is slidably engaged with the housing 1. It also includes a push rod retraction assembly 5, which is located in front of the push rod drive assembly 4 and both are installed inside the housing 1. The push rod retraction assembly 5 includes a first spring 51 and a stop plate 52. The stop plate 52 is slidably engaged with the push rod. One end of the first spring 51 is fixedly connected to the lower end of the stop plate 52, and the other end is fixedly connected to the housing 1 in front of the first spring 51. A retraction trigger 6 is located below the push rod retraction assembly 5. The retraction trigger 6 is rotatably connected to the housing 1, and the top of the retraction trigger 6 contacts the rear side of the stop plate 52.

[0025] This structure allows the operator to quickly and easily operate the retraction trigger 6 after completing the glue application, causing the push rod 3 to retract a certain distance and effectively preventing glue spillage. Specifically, previously, to prevent glue spillage, a retraction mechanism was typically installed at the tail of the push rod 3. However, this method is inconvenient to operate and sometimes fails to achieve a noticeable retraction effect. In this design, the retraction mechanism consists of a push rod retraction assembly 5 and a retraction trigger 6. The push rod retraction assembly 5 is positioned in front of the push rod drive assembly 4, and both are controlled by the retraction trigger 6 and the drive trigger 2, ensuring that the retraction trigger 6 is located in front of the drive trigger 2. This design allows the operator to easily operate the retraction trigger 6 by simply moving their finger slightly forward after releasing the drive trigger 2, thus controlling the timely retraction of the push rod 3. This method is more labor-saving and easier to operate, improving the user experience and increasing work efficiency. The push rod retraction assembly 5 consists of a baffle 52 and a first spring 51. This structure is relatively stable, can control the retraction distance of the push rod 3, and has a good retraction effect.

[0026] Furthermore, the housing 1 is provided with a first receiving groove 11 and a second receiving groove 12. The push rod retraction assembly 5 and the push rod drive assembly 4 are respectively disposed in the first receiving groove 11 and the second receiving groove 12. The first spring 51 is fixedly connected to the front end of the first receiving groove 11, and the upper end of the baffle 52 is in non-fixed contact with the first receiving groove 11. Since the top of the retraction trigger 6 is in contact with the lower rear end of the baffle 52, when force is applied to the retraction trigger 6, the lower end of the baffle 52 will move forward, while the upper end of the baffle 52 remains in non-fixed contact with the first receiving groove 11, so the upper end of the baffle 52 will not be displaced. This causes the lower end of the baffle 52 to first jam the push rod 3 after moving forward, and then release the retraction trigger 6. The baffle 52 will move backward under the action of the first spring 51, thereby driving the push rod 3 to retract a certain distance. One end of the first spring 51 is fixedly connected to the lower end of the baffle 52, and the other end is fixedly connected to the front end of the first receiving groove 11, ensuring that the baffle 52 can move and compress the first spring 51 when subjected to force. When the external force dissipates, the elastic force of the first spring 51 will quickly cause the baffle 52 to return to its initial position.

[0027] Preferably, two arc-shaped clamping parts 111 are symmetrically arranged on the upper end of the first receiving groove 11. The two arc-shaped clamping parts 111 together abut against the upper end of the baffle 52, and the lower end of the baffle 52 rests against the rear wall of the first receiving groove 11 under the action of the first spring 51. The two symmetrically arranged arc-shaped clamping parts 111 together abut the upper end of the baffle 52, and the arc-shaped clamping parts 111 make point contact with the baffle 52. In this way, when the retracting trigger 6 pushes the baffle 52 forward, the upper end of the baffle 52 will only rotate to a certain extent without displacement, so that it can work together with the first spring 51 to act on the baffle 52. The lower end of the baffle 52 rests against the rear wall of the first receiving groove 11 under the action of the limiting spring. The limiting spring provides a continuous pushing force, so that the lower end of the baffle can fit against the rear wall of the first receiving groove 11, preventing the baffle 52 from loosening.

[0028] Preferably, the push rod drive assembly 4 includes a push plate 41 and a second spring 42. The second spring 42 is slidably engaged with the push rod 3. One end of the second spring 42 is fixedly connected to the front end of the second receiving groove 12, and the other end of the second spring 42 is fixedly connected to the push plate 41. Under the action of the second spring 42, the push plate 41 rests against the rear side of the second receiving groove 12, and the top of the drive trigger 2 contacts the lower rear end of the push plate 41. When the drive trigger 2 is pulled, the push rod drive assembly 4 drives the push rod 3 to move forward, thereby pushing out the glue in the tube. The sliding engagement between the second spring 42 and the push rod 3 ensures that the push rod 3 can move forward smoothly.

[0029] Preferably, the baffle 52 has a first opening 521, and the push plate 41 has a second opening 411. The first and second openings 521 and 411 slide in engagement with the push rod 3. The diameters of the first and second openings 521 and 411 can be set slightly larger than the diameter of the push rod 3. Thus, when the drive trigger 2 moves the push plate 41 forward, the force applied by the drive trigger 2 to the lower end of the push plate 41 causes it to tilt slightly, allowing the second opening 411 to lock the push rod 3 and move it forward. Similarly, when the retracting trigger 6 drives the baffle 52, the first opening 521 locks the push rod 3 after the baffle 52 moves forward. Releasing the retracting trigger 6 allows the baffle 52 to return to its original position under the action of the first spring 51, thus retracting the push rod 3. Furthermore, setting the diameter of the second opening 411 slightly larger than the diameter of the push rod 3 ensures that the push rod 3 is not obstructed during retraction, achieving the desired effect.

[0030] Preferably, a fixed sleeve 13 extends from the rear end of the housing 1, and the fixed sleeve 13 slides in engagement with the push rod 3. The design of the fixed sleeve 13 provides good positioning and support for the push rod 3, so that the push rod 3 can maintain horizontal movement when moving forward or backward, which is beneficial for controlling the amount and speed of glue dispensing.

[0031] As a preferred option, such as Figure 3 and Figure 4 As shown, a mounting part 14 extends from the front end of the housing 1, and the mounting part 14 and the push rod 3 are slidably engaged. A mounting hole 71 is provided at the rear end of the bracket 7, and the mounting hole 71 is fixedly engaged with the mounting part 14. The design of the mounting part 14 serves a positioning function. The bracket 7 can engage with the mounting part 14 through the mounting hole 71. The mounting hole 71, the mounting part 14, and the push rod 3 are always located on the same axis, avoiding installation deviation.

[0032] Preferably, a fastener 8 is also included, which is threadedly connected to the mounting part 14. The fastener 8 secures the bracket 7 to the housing 1. The presence of the fastener 8 can firmly fix the bracket 7 to the housing 1. Compared with the welding method, this connection method is more flexible and can realize the disassembly and fixing of the bracket 7.

[0033] In summary, this highly efficient anti-overflow glue gun features a rationally designed and easy-to-operate retraction mechanism, which improves user experience and work efficiency. It allows operators to easily operate the retraction mechanism to control the push rod to retract in a timely manner when glue application is paused, thereby preventing glue overflow.

[0034] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency anti-overflow glue gun, comprising a bracket (7) and a handle assembly, the bracket (7) being fixedly installed in front of the handle assembly, the handle assembly comprising a shell (1), a driving trigger (2), a push rod (3) and a push rod driving assembly (4), the driving trigger (2) being rotationally connected with the shell (1), a top end of the driving trigger (2) being in contact with the push rod driving assembly (4), the push rod driving assembly (4) being connected with the push rod (3), and the push rod (3) being in sliding fit with the shell (1) and the bracket (7), characterized in that: Also include push rod back-off assembly (5), push rod back-off assembly (5) is arranged in front of push rod drive assembly (4) and both are installed in the shell (1), push rod back-off assembly (5) includes first spring (51) and baffle (52), baffle (52) is in sliding fit with push rod, one end of first spring (51) is fixedly connected with the lower end of baffle (52), and the other end is fixedly connected with the shell (1) in front of first spring (51), push rod back-off assembly (5) is provided below with back-off trigger (6), back-off trigger (6) is rotatably connected with shell (1), the top end of back-off trigger (6) is in contact with the rear side of baffle (52).

2. The high efficiency anti-overflow glue gun according to claim 1, characterized in that: The shell (1) is provided with a first accommodating groove (11) and a second accommodating groove (12), the push rod back-off assembly (5) and the push rod drive assembly (4) are arranged in the first accommodating groove (11) and the second accommodating groove (12) respectively, the first spring (51) is fixedly connected with the front end of the first accommodating groove (11), and the upper end of the baffle (52) is in non-fixed contact with the first accommodating groove (11).

3. The high efficiency anti-overflow glue gun according to claim 2, wherein: The upper end of the first accommodating groove (11) is symmetrically provided with two arc-shaped top pressing portions (111), the two arc-shaped top pressing portions (111) jointly press against the upper end of the baffle (52), and the lower end of the baffle (52) leans against the rear wall of the first accommodating groove (11) under the action of the first spring (51).

4. The high efficiency anti-spill glue gun of claim 1, wherein: The push rod drive assembly (4) includes a push plate (41) and a second spring (42), the second spring (42) is in sliding fit with the push rod (3), one end of the second spring (42) is fixedly connected with the front end of the second accommodating groove (12), the other end of the second spring (42) is fixedly connected with the push plate (41), and the push plate (41) leans against the rear side of the second accommodating groove (12) under the action of the second spring (42), and the top end of the drive trigger (2) is in contact with the lower end of the rear side of the push plate (41).

5. The high efficiency anti-overflow glue gun according to claim 4, wherein: The baffle (52) is provided with a first aperture (521), the push plate (41) is provided with a second aperture (411), and the first aperture (521) and the second aperture (411) are in sliding fit with the push rod (3).

6. The high efficiency anti-spill glue gun of claim 1, wherein: The rear end of the shell (1) extends out a fixing sleeve (13), the fixing sleeve (13) is in sliding fit with the push rod (3).

7. The high efficiency anti-spill glue gun of claim 1, wherein: The front end of the shell (1) extends out a mounting portion (14), the mounting portion (14) and the push rod (3) are in sliding fit, the rear end of the bracket (7) is provided with a mounting hole (71), and the mounting hole (71) is fixedly matched with the mounting portion (14).

8. The high efficiency anti-spill glue gun of claim 1, wherein: Also include a fixing member (8), the fixing member (8) is threadedly connected with the mounting portion (14), and the fixing member (8) fixes the bracket (7) on the shell (1).

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