Glue gun handle and glue gun

Abstract

The utility model provides a kind of glue gun handle and glue gun, it is related to the field of gluing tool, the glue gun handle includes automatic proportion adjusting module, the upper end of its pistol grip is rotatably connected to the front side of grip by connecting shaft, automatic proportion adjusting module includes driving shaft and sliding slot;Driving shaft is installed on the upper end of pistol grip, for being acted on glue gun driving piece in assembly state;Sliding slot is located in the upper end of pistol grip;One of connecting shaft and driving shaft is slidably installed in the interior of sliding slot as relative sliding shaft, the other is as relative fixed shaft;Relative sliding shaft can slide along the sliding slot under pressure and be positioned at different positions of the sliding slot according to the size of pressure value, to change the distance of driving shaft and connecting shaft.The glue gun handle and glue gun provided by the utility model can automatically adjust glue gun driving proportion according to colloid viscosity, improve the convenience when user operates glue gun, improve work efficiency and construction achievement reliability.

Description

Technical Field

[0001] This utility model relates to the field of glue application tools, and in particular to a glue gun handle and a glue gun. Background Technology

[0002] Glue guns, as a common tool for applying adhesive, are widely used in home decoration and industrial fields. With the diversification of needs in building decoration and industrial manufacturing, users are placing increasingly higher demands on the performance of caulking guns. The flow rate of the caulking gun is one of the key parameters affecting its user experience.

[0003] In existing technologies, the design of the feed ratio (also known as the propulsion ratio) of glue guns is mainly divided into two types: one is a glue gun with a single fixed ratio. Although this design is simple in structure and easy to operate, it cannot adapt to the needs of different viscosities of glue and different construction scenarios. The other is a glue gun equipped with two ratios and a ratio conversion module. However, the ratio conversion module of this type of glue gun in the existing technology requires manual adjustment to switch the ratio mode. Although this design expands the application scenarios to a certain extent, it not only affects work efficiency, but is also particularly inconvenient in construction environments where the feed ratio needs to be frequently switched. It not only increases the complexity of operation, but also easily leads to construction quality problems due to forgetting to adjust. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a glue gun handle and glue gun that can automatically adjust the glue gun feed ratio according to the viscosity of the glue, so as to alleviate the above-mentioned technical problems existing in the prior art.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] In a first aspect, this utility model provides a glue gun handle, including a grip, a lever, and a connecting shaft, wherein the upper end of the lever is rotatably connected to the front side of the grip via the connecting shaft; the glue gun handle further includes an automatic ratio adjustment module; the automatic ratio adjustment module includes:

[0007] A drive shaft, mounted on the upper end of the handle, is used to drive the glue gun in the assembled state.

[0008] A sliding groove is provided at the upper end of the handle; one of the connecting shaft and the driving shaft is slidably installed inside the sliding groove as a relative sliding shaft, and the other of the connecting shaft and the driving shaft is a relative fixed shaft;

[0009] The relative sliding shaft can slide along the slide groove under pressure and be positioned at different positions in the slide groove according to the magnitude of the pressure, thereby changing the distance between the drive shaft and the connecting shaft.

[0010] In an optional embodiment, the automatic proportional adjustment module further includes an elastic adjustment mechanism installed on the lever or the grip, and the elastic adjustment mechanism acts on the relative sliding shaft;

[0011] The relative sliding shaft can slide along the slide groove under pressure, overcoming the elastic force of the elastic adjustment mechanism, and reset under the elastic restoring force of the elastic adjustment mechanism after the pressure is removed.

[0012] In an optional embodiment, the elastic adjustment mechanism includes an adjustment spring, one end of which is fixed to the lever or the grip, and the other end of which abuts against the side of the opposing sliding shaft.

[0013] In an optional embodiment, the elastic adjustment mechanism further includes a guide rail seat, which is fixedly connected to the upper end of the lever. The guide rail seat is provided with a spring mounting groove that opens toward the relative sliding shaft. The adjusting spring is installed inside the spring mounting groove.

[0014] In an optional embodiment, the lever includes a lever body, the slide groove is disposed at the upper end of the lever body, and the adjusting spring is a linear spring, one end of which is installed inside the spring mounting groove and the other end abuts against the side of the relative sliding shaft.

[0015] In an optional embodiment, the guide rail seat is disposed on the rear side of the connecting shaft and the drive shaft and is located between the connecting shaft and the drive shaft, and the guide rail seat, the connecting shaft and the drive shaft are arranged in a triangular pattern;

[0016] And / or, the handle has an internal installation space, and the guide rail seat is located inside the installation space and fixedly installed on the handle by a fastener.

[0017] In an optional embodiment, the lever includes a lever body and a rotating seat;

[0018] The slide groove includes a slide groove one provided on the handle body and a slide groove two provided on the rotating seat; the handle body is also provided with a limiting hole one, and the rotating seat is also provided with a limiting hole two.

[0019] The relative sliding shaft passes through the second limiting hole and is slidably installed in the first sliding groove;

[0020] The relatively fixed shaft passes through the limiting hole and is slidably installed in the slide groove.

[0021] The adjusting spring is a linear spring, with one end installed inside the spring mounting slot and the other end abutting against the side wall of the rotating seat. Its elastic force acts on the relative sliding shaft through the rotating seat.

[0022] The relative sliding shaft can slide along the first slide groove, and while the rotating seat rotates around the relative sliding shaft against the elastic force of the adjusting spring, it slides along the second slide groove relative to the relative fixed shaft, thereby changing the distance between the drive shaft and the connecting shaft.

[0023] In an optional embodiment, the handle has an internal mounting space, and both the rotating seat and the guide rail seat are located inside the mounting space, with the guide rail seat positioned below the rotating seat.

[0024] Secondly, this utility model provides a glue gun, including a push rod, a drive plate, and a glue gun handle provided in any of the optional embodiments of the first aspect; wherein, the push rod is inserted into a mounting hole provided at the upper end of the handle, the drive plate is fitted onto the push rod, and the drive shaft abuts against the rear side of the drive plate.

[0025] Thirdly, this utility model embodiment provides another glue gun, which includes a push rod, a drive plate, and a glue gun handle provided by any optional embodiment under the condition that "the handle includes a handle body and a rotating seat" in the first aspect; wherein, the push rod is inserted into the mounting hole provided at the upper end of the handle, the drive plate is fitted onto the push rod, and the front side of the rotating seat abuts against the rear side of the drive plate.

[0026] In particular, in the embodiments of this utility model, "and / or" means that the first feature before "and / or" and the second feature after "and / or" include the following specific settings: (1) only the first feature is set, and the second feature is not set; (2) only the second feature is set, and the first feature is not set; (3) the first feature and the second feature are set at the same time.

[0027] Beneficial effects:

[0028] The glue gun handle and glue gun provided in this embodiment of the utility model have an automatic proportional adjustment module for the glue gun handle, which is a linkage control structure that can adaptively adjust based on operation feedback. With the "relative fixed axis" as a reference point, the "relative sliding axis" can slide and be positioned in the groove in response to the pressure transmitted by the glue cylinder through the drive plate. The distance between the drive shaft and the connecting shaft is automatically adjusted according to the viscosity of the glue, thereby adjusting the lever ratio between the handle and the grip, changing the glue gun drive ratio. The entire process does not require additional manual adjustment by the user, which improves the convenience of the user when operating the glue gun and avoids construction quality problems caused by the user forgetting to adjust. It also improves work efficiency and the reliability of construction results (for its working principle and specific analysis, please refer to the detailed description in the specific implementation section of this application). Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of a glue gun handle provided in an optional embodiment of the present utility model when applied to a glue gun.

[0031] Figure 2 for Figure 1 A cross-sectional view of the glue gun handle shown;

[0032] Figure 3 for Figure 1 The diagram shows the exploded structure of the glue gun handle.

[0033] Figure 4 A schematic diagram of the overall structure of a glue gun handle provided in another optional embodiment of the present utility model when applied to a glue gun;

[0034] Figure 5 for Figure 4 A cross-sectional view of the glue gun handle shown;

[0035] Figure 6 for Figure 4 The diagram shows the exploded structure of the glue gun handle.

[0036] Icons: 1-Grip; 2-Wrench; 21-Wrench body; 210-Installation space; 211-Limiting hole one; 22-Rotating seat; 221-Limiting hole two; 3-Connecting shaft; 4-Drive shaft; 5-Slide groove; 51-Slide groove one; 52-Slide groove two; 6-Guide rail seat; 61-Spring mounting groove; 62-Fixing component; 7-Linear spring; 8-Push rod; 9-Drive plate; 10-Connecting nut; 101-Drive spring; 102-Limiting tube; 103-Brake spring; 104-Brake plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0040] In the description of this utility model, it should be noted that:

[0041] Unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The terms "upper," "lower," "front," "back," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate totality or relative position in time and / or space, nor should they be construed as indicating or implying relative importance.

[0044] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the features of the following embodiments and their optional embodiments can be combined with each other.

[0045] First, the basic structure of the glue gun will be explained, referring to... Figures 1 to 6A glue gun typically includes a glue gun handle, a gun body (not shown), a push rod 8, a drive plate 9, a connecting nut 10, a drive spring 101, a limit tube 102, a brake spring 103, and a brake pad 104. The basic structure of the glue gun handle includes a grip 1, a lever 2, and a connecting shaft 3. The upper end of the lever 2 is rotatably connected to the front side of the grip 1 via the connecting shaft 3. A top connector is fixed or integrally connected to the upper end of the grip 1. The push rod 8 passes through the mounting hole provided in the top connector at the upper end of the grip 1. The rear end of the push rod 8 passes through the through hole provided in the brake pad 104, and the front end of the push rod 8 extends... Inside the gun body; a drive plate 9 is slidably mounted on the push rod 8; the lower end of the drive plate 9 abuts against the front side of the drive part provided at the upper end of the handle 2; a drive spring 101 is also sleeved on the push rod 8, and one end of the drive spring 101 abuts against the drive plate 9 and the other end abuts against the connecting nut 10 connected to the rear end of the gun body; a limiting tube 102 is provided inside the top connecting piece at the upper end of the handle 1; a brake spring 103 is provided between the brake plate 104 and the limiting tube 102; the brake spring 103 tilts the brake plate 104 so that the push rod 8 is locked in the through hole provided in the brake plate 104.

[0046] It should be noted that the above structure is only one type of existing glue gun structure, intended to introduce the basic application principle of glue gun. In other glue gun structures, the above-mentioned connecting nut 10 and limiting tube 102 may not be provided, and local structural improvements can be made with reference to existing technology.

[0047] In practical use, press the brake pad 104 to extend it vertically and release the push rod 8. Pull the push rod 8 to move its front end backward and release the brake pad 104. Place the glue cartridge inside the gun body with the glue outlet facing forward. Pull the lever 2 backward. At this time, the drive part at the upper end of the lever 2 can push the drive piece 9 to lock the push rod 8. At the same time, the drive part at the upper end of the lever 2 moves forward to drive the push rod 8 to overcome the friction between the through hole of the brake pad 104 and the push rod 8 and move forward. This causes the front end of the push rod 8 to press the rear end of the glue cartridge placed inside the gun body, thereby dispensing glue from the glue cartridge. During the forward movement of the drive piece 9, the drive spring 101 is compressed. The drive spring 101 makes the drive piece 9 and the lever 2 always have a tendency to return to their original position, so that when the lever 2 is released, the drive piece 9 returns to its original position and straightens. Repeat this operation to apply glue.

[0048] In the use of a glue gun, the feed rate (also known as the propulsion ratio) is one of the key parameters affecting its user experience. The distance between the drive unit at the upper end of the handle 2 and the connecting shaft 3 determines the lever ratio between the handle 2 and the grip 1, and thus determines the size of the glue gun's feed rate. When using a glue with high viscosity, a larger feed rate is usually required, and vice versa.

[0049] In existing technologies, the design of the feed ratio (also known as the propulsion ratio) of glue guns is mainly divided into two types: one is a glue gun with a single fixed ratio. Although this design is simple in structure and easy to operate, it cannot adapt to the needs of different viscosities of glue and different construction scenarios. The other is a glue gun equipped with two ratios and a ratio conversion module. However, the ratio conversion module of this type of glue gun in the existing technology requires manual adjustment to switch the ratio mode. Although this design expands the application scenarios to a certain extent, it not only affects work efficiency, but is also particularly inconvenient in construction environments where the feed ratio needs to be frequently switched. It not only increases the complexity of operation, but also easily leads to construction quality problems due to forgetting to adjust.

[0050] In contrast, the following embodiments of this application provide a novel glue gun handle and glue gun to solve the above-mentioned technical problems:

[0051] First aspect

[0052] This embodiment provides a glue gun handle, which includes a grip 1, a lever 2, and a connecting shaft 3. The upper end of the lever 2 is rotatably connected to the front side of the grip 1 via the connecting shaft 3. Specifically, the glue gun handle also includes an automatic proportional adjustment module, which includes a drive shaft 4 and a slide groove 5. Specifically, the drive shaft 4 is mounted on the upper end of the lever 2 and acts on the drive plate 9 of the glue gun in the assembled state; the slide groove 5 is located on the upper end of the lever 2; one of the connecting shaft 3 and the drive shaft 4 is slidably mounted inside the slide groove 5 as a relative sliding shaft, and the other of the connecting shaft 3 and the drive shaft 4 serves as a relative fixed shaft; the relative sliding shaft can slide along the slide groove 5 under pressure and be positioned at different positions in the slide groove 5 according to the magnitude of the applied pressure, thereby changing the distance between the drive shaft 4 and the connecting shaft 3.

[0053] In this embodiment, "relative sliding shaft" and "relative fixed shaft" are named for the relative movement of the drive shaft 4 and the connecting shaft 3, including the following two situations: (1) During use, the connecting shaft 3 is stationary relative to the drive shaft 4, the drive shaft 4 is assembled in the slide groove 5, and when the drive shaft 4 is subjected to pressure, it can slide relative to the connecting shaft 3 as a "relative sliding shaft" along the slide groove 5, thereby changing the distance between the drive shaft 4 and the connecting shaft 3; (2) During use, the drive shaft 4 is stationary relative to the connecting shaft 3, the connecting shaft 3 is assembled in the slide groove 5, and when the drive shaft 4 is subjected to pressure, the pressure is transmitted to the connecting shaft 3 through the lever 2, and the connecting shaft 3 can slide relative to the drive shaft 4 as a "relative sliding shaft" along the slide groove 5, thereby changing the distance between the drive shaft 4 and the connecting shaft 3.

[0054] In this embodiment, the slide groove 5 is located on the upper end of the handle 2 to guide the "relative sliding shaft" to slide in a set direction; the drive shaft 4 is installed on the upper end of the handle 2 and acts on the drive plate 9 of the glue gun (i.e., to trigger the glue cartridge to dispense glue) in the assembled state; the connecting shaft 3 serves as the rotational connecting shaft 3 between the handle 2 and the grip 1, forming the basic fulcrum of the glue gun handle. During operation: In the initial state, the "relative sliding shaft" is in the default position within the slide groove 5, and the drive shaft 4 and the connecting shaft 3 maintain a standard distance, corresponding to a standard drive ratio; during operation, when the user presses the handle 2, the drive shaft 4 is affected by the reverse force of the drive plate 9, generating pressure. Under this pressure, the "relative sliding shaft" will slide along the slide groove 5 and be positioned at different positions in the slide groove 5 according to the magnitude of the pressure value, thereby changing the distance between the drive shaft 4 and the connecting shaft 3. This change in distance changes the lever ratio between the handle 2 and the grip 1, thereby realizing the automatic proportional adjustment function of glue dispensing volume and thrust.

[0055] In the glue gun handle provided in this embodiment, the automatic proportional adjustment module is designed as a linkage control structure that can adaptively adjust based on operation feedback. Taking the "relative fixed axis" as a reference point, the "relative sliding axis" can slide and be positioned in the slide groove 5 in response to the pressure transmitted by the glue cylinder through the drive plate 9. The distance between the drive shaft 4 and the connecting shaft 3 is automatically adjusted according to the viscosity of the glue, thereby adjusting the lever ratio between the handle 2 and the grip 1 and changing the glue gun drive ratio. The entire process does not require additional manual adjustment by the user, which improves the convenience of the user when operating the glue gun and avoids construction quality problems caused by the user forgetting to adjust, thereby improving work efficiency and the reliability of construction results.

[0056] In this embodiment, there are multiple ways in which the "relative sliding shaft" slides and is positioned in the groove 5 in response to the pressure transmitted by the driving plate through the rubber sleeve, including but not limited to:

[0057] In some optional embodiments, the "relative sliding shaft" and its corresponding groove 5 can be in a frictional fit relationship. Initially, the distance between the drive shaft 4 and the connecting shaft 3 is relatively large. When the pressure value transmitted from the glue tube to the "relative sliding shaft" via the drive plate 9 is greater than the frictional force between the "relative sliding shaft" and the inner wall of the groove 5, the "relative sliding shaft" can slide relative to the groove 5, reducing the distance between the drive shaft 4 and the connecting shaft 3. After completing the glue dispensing task, as the lever 2 resets relative to the handle 1, the "relative sliding shaft" also resets. Alternatively, the "relative sliding shaft" can be manually reset after the lever 2 resets relative to the handle 1.

[0058] In some alternative embodiments, the slide 5 can be designed as a groove with a different diameter at various locations to provide multiple limiting parts that can lock the "relative sliding shaft". Initially, the distance between the drive shaft 4 and the connecting shaft 3 is relatively large. When the pressure value transmitted from the glue tube to the "relative sliding shaft" via the drive plate 9 increases, the "relative sliding shaft" can slide relative to the slide 5 to a certain limiting part, reducing the distance between the drive shaft 4 and the connecting shaft 3. After the glue dispensing task is completed, as the lever 2 resets relative to the grip 1, the "relative sliding shaft" also resets. Alternatively, the "relative sliding shaft" can be manually reset after the lever 2 resets relative to the grip 1.

[0059] The two structures provided by the above two optional embodiments can be designed separately in a glue gun handle or combined in the same glue gun handle. The process of the "relative sliding shaft" sliding and positioning in the groove 5 in response to the pressure transmitted by the glue tube through the drive plate 9 does not require the "relative sliding shaft" to be positioned in advance according to the viscosity of the glue. Instead, during use, the "relative sliding shaft" is automatically adjusted and positioned in response to the pressure transmitted by the glue tube through the drive plate, making it more convenient to use.

[0060] However, in this embodiment, the way in which the "relative sliding shaft" slides and positions itself in the groove 5 in response to the pressure transmitted by the driving plate from the glue tube is not limited to the two optional implementation methods described above. For example, the applicant has also designed another optional structure that, while not requiring prior positioning of the "relative sliding shaft" based on the viscosity of the glue, can also ensure that the "relative sliding shaft" automatically resets after completing the glue dispensing task. In this optional implementation, specifically: in addition to the driving shaft 4 and the groove 5, the automatic proportional adjustment module also includes an elastic adjustment mechanism installed on the handle 2 or the grip 1, and the elastic adjustment mechanism acts on the "relative sliding shaft"; the "relative sliding shaft" can overcome the elastic force of the elastic adjustment mechanism and slide along its groove 5 under the pressure transmitted by the driving plate 9 from the glue tube, and reset under the elastic restoring force of the elastic adjustment mechanism after the pressure is removed.

[0061] In the above structure, the displacement of the "relative sliding shaft" in the slide groove 5 is controlled by the elastic adjustment mechanism. Initially, the "relative sliding shaft" is in its default position within the slide groove 5, with a preload applied by the elastic adjustment mechanism. The drive shaft 4 and connecting shaft 3 maintain a standard distance, corresponding to a standard drive ratio. During operation, when the user presses the pressure plate 2, the drive shaft 4 is affected by the reverse action of the drive plate 9, generating pressure. If this pressure exceeds the elastic force applied to the "relative sliding shaft" by the elastic adjustment mechanism, the "relative sliding shaft" will slide along the slide groove 5 until it reaches a position where the pressure and elastic force are equivalent, changing the distance between the drive shaft 4 and connecting shaft 3, thus achieving automatic proportional adjustment of the glue dispensing volume and thrust. After dispensing, the rebound force (elastic restoring force) of the elastic adjustment mechanism pushes the "relative sliding shaft" back to its original position, returning the glue gun to its initial drive ratio state.

[0062] Optionally, the aforementioned elastic adjustment mechanism includes an adjusting spring, one end of which is fixed to the lever 2 or the grip 1, and the other end of which abuts against the side of the "relative sliding shaft". To improve assembly stability, in this embodiment, the aforementioned elastic adjustment mechanism may optionally include a guide rail seat 6, which is fixedly connected to the upper end of the lever 2. The guide rail seat 6 is provided with a spring mounting groove 61 that opens toward the "relative sliding shaft"; the adjusting spring is installed inside the spring mounting groove 61. In this optional embodiment, the guide rail seat 6 is fixedly connected to the upper end of the lever 2, carries the adjusting spring, and provides guiding support; the adjusting spring provides elastic force to keep the "relative sliding shaft" in its default position, and when an external force overcomes the spring force, the "relative sliding shaft" is allowed to slide along the slide groove 5.

[0063] Alternatively, the aforementioned groove 5 may be a long through-hole structure, through which the "relative sliding shaft" passes, and with limiting head structures at both ends of the shaft to ensure reliable linkage. Optionally, an installation space 210 is provided inside the lever 2, and the guide rail seat 6 is located inside the installation space 210 and fixedly installed to the lever 2 by pins, bolt assemblies, or other fasteners 62. The spring mounting groove 61 provided on the guide rail seat 6 is preferably, but not limited to, a blind hole structure to prevent the adjusting spring from slipping out of the spring mounting groove 61, ensuring that the adjusting spring compresses or rebounds along a preset path.

[0064] In this embodiment, the adjusting spring can be a torsion spring, a linear spring, or arranged in other ways. Taking the adjusting spring as a linear spring as an example, at least two more specific implementation methods are provided below:

[0065] In some specific implementations, such as Figures 1 to 3 As shown, the lever 2 includes a lever body 21, a sliding groove 5 is provided on the upper end of the lever body 21, and the adjusting spring is a linear spring 7, one end of which is installed inside the spring mounting groove 61, and the other end abuts against the side of the "relative sliding shaft". In this specific embodiment, the sliding groove 5 is directly provided on the lever body 21, which is simple in structure and easy to manufacture.

[0066] At this time, it can be that the "relative sliding axis" is the driving axis 4 and the "relative fixed axis" is the connecting axis 3; or the "relative sliding axis" is the connecting axis 3 and the "relative fixed axis" is the driving axis 4.

[0067] Figures 1 to 3In the structure shown, drive shaft 4 acts as a "relative sliding shaft," and connecting shaft 3 acts as a "relative fixed shaft." During the glue application process, handle 2 rotates around connecting shaft 3. The adjusting spring in the automatic proportional adjustment module pushes drive shaft 4, which in turn pushes drive plate 9. Drive plate 9 and push rod 8 self-lock, and push rod 8 compresses the glue, completing the glue application. When the glue viscosity is high, the force exerted on push rod 8 by the glue tube is large, preventing push rod 8 from advancing. At this time, the pressure on drive shaft 4 from drive plate 9 increases. Under this pressure, drive shaft 4 moves along slide groove 5 and compresses the adjusting spring, reducing the distance between drive shaft 4 and connecting shaft 3. This increases the lever ratio between handle 2 and grip 1, and subsequently, drive plate 9 drives push rod 8 forward, completing the glue application.

[0068] When the connecting shaft 3 acts as a "relative sliding shaft" and the drive shaft 4 acts as a "relative fixed shaft," during the glue application process, the handle 2 rotates around the connecting shaft 3. The adjusting spring in the automatic proportional adjustment module pushes the drive shaft 4, which in turn pushes the drive plate 9. The drive plate 9 and the push rod 8 self-lock, and the push rod 8 squeezes the glue to complete the glue application. When the glue viscosity is high, the force exerted on the push rod 8 by the glue tube is large, preventing the push rod 8 from moving forward. At this time, the pressure on the drive shaft 4 from the drive plate 9 increases. This pressure is transmitted to the handle 2, and then to the connecting shaft 3. Under this pressure, the connecting shaft 3 moves along the slide groove 5 and compresses the adjusting spring. The distance between the drive shaft 4 and the connecting shaft 3 decreases, increasing the lever ratio between the handle 2 and the grip 1. Subsequently, the drive plate 9 drives the push rod 8 forward to complete the glue application.

[0069] When the viscosity of the colloid is different, the magnitude of the reaction force of the drive shaft 4 on the drive plate 9 is different, the magnitude of the driving force that the adjusting spring needs to provide to the drive shaft 4 is different, and the extension and contraction of the adjusting spring is adaptively changed accordingly. The movement length of the drive shaft 4 along the slide 5 is different, the distance between the drive shaft 4 and the connecting shaft 3 is different, and the lever ratio between the lever 2 and the handle 1 is different, that is, the glue gun driving ratio is different, so as to realize the automatic adjustment of the glue gun driving ratio when the viscosity of the colloid is different.

[0070] In order to make the structure more stable and reliable, preferably, but not limited to, such as Figures 1 to 3 As shown, the guide rail seat 6 is further positioned behind the connecting shaft 3 and the drive shaft 4 and between the connecting shaft 3 and the drive shaft 4. The guide rail seat 6, the connecting shaft 3 and the drive shaft 4 are arranged in a triangular pattern to improve stable and reliable linkage.

[0071] In other specific embodiments of this example, such as Figures 4 to 6As shown, the lever 2 includes a lever body 21 and a rotating seat 22; the slide 5 includes a slide 51 on the lever body 21 and a slide 52 on the rotating seat 22; the lever body 21 is also provided with a limiting hole 211, and the rotating seat 22 is also provided with a limiting hole 221; the "relative sliding shaft" passes through the limiting hole 221 and is slidably installed in the slide 51; the "relative fixed shaft" passes through the limiting hole 211 and is slidably installed in the slide 52; the adjusting spring is a linear spring 7, one end of which is installed inside the spring mounting groove 61, and the other end abuts against the side wall of the rotating seat 22, and its elastic force acts on the "relative sliding shaft" through the rotating seat 22; the "relative sliding shaft" can slide along the slide 51, and while the rotating seat 22 rotates around the "relative sliding shaft" against the elastic force of the adjusting spring, it slides along the slide 52 relative to the "relative fixed shaft", thereby changing the distance between the drive shaft 4 and the connecting shaft 3.

[0072] At this time, it can be that the "relative sliding axis" is the driving axis 4 and the "relative fixed axis" is the connecting axis 3; or the "relative sliding axis" is the connecting axis 3 and the "relative fixed axis" is the driving axis 4. Figures 4 to 6 In the structure shown, drive shaft 4 acts as a "relative sliding shaft," and connecting shaft 3 acts as a "relative fixed shaft." In this structure, during the glue application process, the handle 2 rotates around the connecting shaft 3. The adjusting spring in the automatic proportional adjustment module pushes drive shaft 4, which in turn pushes drive plate 9. Drive plate 9 and push rod 8 self-lock, and push rod 8 squeezes the glue, completing the glue application. Because the force exerted by the glue cartridge on push rod 8 is large, push rod 8 cannot move forward. At this time, the pressure on drive shaft 4 from drive plate 9 increases. Under this pressure, drive shaft 4 moves along slide groove 51, simultaneously rotating the rotating seat 22 around the connecting shaft 3 while sliding relative to the connecting shaft 3 along slide groove 52, compressing the adjusting spring. The distance between drive shaft 4 and connecting shaft 3 decreases, increasing the lever ratio between handle 2 and grip 1. Subsequently, drive plate 9 drives push rod 8 forward, completing the glue application. In this specific embodiment, to make the structure more stable and reliable, preferably, but not limited to, such as... Figures 4 to 6 As shown, further, an installation space 210 is provided inside the lever 2, and both the rotating seat 22 and the guide rail seat 6 are located inside the installation space 210, with the guide rail seat 6 located below the rotating seat 22.

[0073] Second aspect

[0074] This embodiment provides a glue gun, including a push rod 8, a drive plate 9, and a glue gun handle provided in any optional embodiment of the first aspect; wherein, the push rod 8 is inserted into the mounting hole provided at the upper end of the handle 1, the drive plate 9 is fitted onto the push rod 8, and the drive shaft 4 abuts against the rear side of the drive plate 9, and its specific structure is described in the first aspect and its prior art.

[0075] Third aspect

[0076] This embodiment provides another type of glue gun, which includes a push rod 8, a drive plate 9, and a glue gun handle provided by an optional embodiment of the first aspect, namely "the handle 2 includes a handle body 21 and a rotating seat 22"; wherein, the push rod 8 is inserted into the mounting hole provided at the upper end of the handle 1, the drive plate 9 is fitted onto the push rod 8, and the front side of the rotating seat 22 abuts against the rear side of the drive plate 9, and its specific structure is described in the first aspect and its prior art.

[0077] Finally, it should be noted that:

[0078] 1. In this manual, the phrase "below" of one component to another, for example, "the guide rail seat 6 is located below the rotating seat 22", only describes the general spatial relationship between the two components, but does not mean that one component must be directly below the other component. That is, the two components can also be arranged diagonally in the vertical direction, as long as the vertical spatial arrangement relationship between the two components is satisfied.

[0079] 2. The above embodiments and optional implementations in this specification are only used to illustrate the technical solutions of this embodiment, and not to limit it. Although this embodiment has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing optional implementations, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments in this specification. In addition, it is emphasized again that, in the absence of conflict, the features of the embodiments and optional implementations in the embodiments in this specification can be combined with each other.

Claims

1. A glue gun handle, comprising a grip (1), a lever (2), and a connecting shaft (3), wherein the upper end of the lever (2) is rotatably connected to the front side of the grip (1) via the connecting shaft (3); characterized in that, The glue gun handle also includes an automatic ratio adjustment module; the automatic ratio adjustment module includes: The drive shaft (4) is installed at the upper end of the handle (2) and is used to drive the glue gun (9) in the assembled state. A sliding groove (5) is provided at the upper end of the lever (2); one of the connecting shaft (3) and the driving shaft (4) is slidably installed inside the sliding groove (5) as a relative sliding shaft, and the other of the connecting shaft (3) and the driving shaft (4) is a relative fixed shaft; The relative sliding shaft can slide along the slide groove (5) under pressure and be positioned at different positions in the slide groove (5) according to the magnitude of the pressure value, thereby changing the distance between the drive shaft (4) and the connecting shaft (3).

2. The glue gun handle according to claim 1, characterized in that, The automatic proportional adjustment module further includes an elastic adjustment mechanism installed on the lever (2) or the grip (1), and the elastic adjustment mechanism acts on the relative sliding shaft; The relative sliding shaft can slide along the slide groove (5) under pressure, overcoming the elastic force of the elastic adjustment mechanism, and reset under the elastic restoring force of the elastic adjustment mechanism after the pressure is removed.

3. The glue gun handle according to claim 2, characterized in that, The elastic adjustment mechanism includes an adjustment spring, one end of which is fixed to the lever (2) or the grip (1), and the other end of which abuts against the side of the relative sliding shaft.

4. The glue gun handle according to claim 3, characterized in that, The elastic adjustment mechanism also includes a guide rail seat (6), which is fixedly connected to the upper end of the lever (2). The guide rail seat (6) is provided with a spring mounting groove (61) facing the relative sliding shaft. The adjustment spring is installed inside the spring mounting groove (61).

5. The glue gun handle according to claim 4, characterized in that, The lever (2) includes a lever body (21), the slide groove (5) is provided on the upper end of the lever body (21), and the adjusting spring is a linear spring (7), one end of which is installed inside the spring mounting groove (61) and the other end abuts against the side of the relative sliding shaft.

6. The glue gun handle according to claim 5, characterized in that, The guide rail seat (6) is located on the rear side of the connecting shaft (3) and the driving shaft (4) and between the connecting shaft (3) and the driving shaft (4). The guide rail seat (6), the connecting shaft (3) and the driving shaft (4) are arranged in a triangular pattern. And / or, the handle (2) has an installation space (210) inside, and the guide rail seat (6) is located inside the installation space (210) and is fixedly installed on the handle (2) by a fastener (62).

7. The glue gun handle according to claim 4, characterized in that, The lever (2) includes a lever body (21) and a rotating seat (22). The slide (5) includes a slide one (51) provided on the handle body (21) and a slide two (52) provided on the rotating seat (22); the handle body (21) is also provided with a limiting hole one (211) and the rotating seat (22) is also provided with a limiting hole two (221). The relative sliding shaft passes through the second limiting hole (221) and is slidably installed in the first sliding groove (51); The relatively fixed shaft passes through the limiting hole one (211) and is slidably installed in the slide groove two (52); The adjusting spring is a linear spring (7), one end of which is installed inside the spring mounting groove (61) and the other end abuts against the side wall of the rotating seat (22). Its elastic force acts on the relative sliding shaft through the rotating seat (22). The relative sliding shaft can slide along the first slide groove (51) and, while the rotating seat (22) rotates around the relative sliding shaft against the elastic force of the adjusting spring, slides along the second slide groove (52) relative to the relative fixed shaft, thereby changing the distance between the drive shaft (4) and the connecting shaft (3).

8. The glue gun handle according to claim 7, characterized in that, The handle (2) has an installation space (210) inside. The rotating seat (22) and the guide rail seat (6) are both located inside the installation space (210). The guide rail seat (6) is located below the rotating seat (22).

9. A glue gun, characterized in that, Includes a push rod (8), a drive plate (9), and a glue gun handle as described in any one of claims 1 to 8; The push rod (8) is inserted into the mounting hole at the upper end of the grip (1), the drive plate (9) is fitted onto the push rod (8), and the drive shaft (4) abuts against the rear side of the drive plate (9).

10. A glue gun, characterized in that, Includes a push rod (8), a drive plate (9), and a glue gun handle as described in claim 7 or 8; The push rod (8) is inserted into the mounting hole at the upper end of the grip (1), the drive plate (9) is fitted onto the push rod (8), and the front side of the rotating seat (22) abuts against the rear side of the drive plate (9).

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