Glue gun

Abstract

A glue gun comprises a main body, one end of the main body is provided with a containing part used for containing a glue barrel; the first handle is connected with the second handle through a pivoting pin shaft; one of the first handle and the second handle is set as a fixed handle, and the other one is set as a movable handle rotating relative to the fixed handle; the fixed handle is connected to the other end of the main body; wherein the movable handle is provided with an actuating part, and the actuating part is configured to be a pushing piece for pushing the glue gun; at least one of the actuating part and the pivoting pin shaft is arranged to be adjustable in position, so that the distance between the actuating part and the pivoting pin shaft is changed, and switching between at least two gears is achieved.

Description

Technical Field

[0001] The utility model relates to the field of hardware equipment, in particular to a glue gun, belonging to the technical field of production, processing, manufacturing and construction tools. Background Art

[0002] When using a glue gun, the lever in the gun-shaped handle pushes the glue back and forth, squeezing the glue to release it. One end of the gun is equipped with a trigger mechanism that fits in the user's hand and can be pressed. When the user presses the trigger, the gun's mechanical structure drives the glue contained within, causing the glue barrel to release glue from the outlet. A single glue gun can be used with a variety of colloids with different properties, each with varying fluidity. Common glue guns only have a fixed extrusion mechanism, making it difficult to achieve uniform glue discharge during the application process. In specific glue gun applications, the application area varies, requiring different discharge speeds. With a fixed extrusion mechanism, common glue guns can only control the discharge speed of the barrel by the user's hand pressure. In practice, controlling the pressure while applying force is extremely difficult, especially when the user applies significant force to the handle. When using a glue gun for the first time, it is often necessary to use a large force to drive the glue gun due to problems such as long-term disuse, partial solidification of the glue, and static viscosity of the glue. However, after the glue is discharged steadily, the driving force required for the glue gun will significantly decrease. The fixed extrusion mechanism of common glue guns cannot solve these problems. In addition, it is often difficult to control the extrusion speed when squeezing the glue gun to discharge the glue at the beginning, and once the glue is discharged, it is often over-squeezed, resulting in the waste of glue.

[0003] Therefore, technicians in this field are committed to developing a glue gun with adjustable gears to achieve conversion between fast feeding and strong feeding, allowing users to adjust according to actual needs. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to achieve adjustable gear position of the glue gun.

[0005] To achieve the above-mentioned purpose, the utility model provides a glue gun, including a movable handle and a fixed handle, the movable handle being connected to the fixed handle via a pivot pin; an actuator is also provided on the movable handle, the actuator having an actuator portion that cooperates with a push piece; the spacing between the pivot pin and the actuator portion is set to be switchable between two or more gears, thereby changing the magnitude of the force applied by the actuator to the push piece.

[0006] Furthermore, a slide groove is provided on the movable handle, and the slide groove is provided with two or more gears; the pivot pin is configured to slide in the slide groove to switch between the gears.

[0007] Furthermore, a slide groove is provided on the fixed handle, and the slide groove is provided with two or more gears; the pivot pin is configured to slide in the slide groove to switch between the gears.

[0008] Furthermore, an elastic component is provided between the movable handle and the fixed handle; the elastic component is configured to generate a pre-tightening force on the movable handle so that the pivot pin remains in one of the gear positions.

[0009] Furthermore, the pivot pin is a stepped pin, which has a pressing end and an elastic component sleeved on the pressing end. The stepped pin has a first axial diameter portion and a second axial diameter portion. The axial diameter of the first axial diameter portion is greater than the width of the slide groove, and the axial diameter of the second axial diameter portion is less than the width of the slide groove. The stepped pin is configured as follows: under the biasing action of the elastic component, the first axial diameter portion is located in the gear position; when the pressing end is pressed, the stepped pin moves axially, causing the second axial diameter portion to enter the gear position; when the pressing end is released, the stepped pin moves axially in the opposite direction under the action of the restoring force of the elastic component, causing the first axial diameter portion to re-enter the gear position.

[0010] Furthermore, the sliding groove is an arc-shaped groove or a straight-line groove.

[0011] Furthermore, a slide groove is provided on the movable handle, and the slide groove is provided with two or more gears; the actuating part is configured to slide in the slide groove to switch between the gears.

[0012] Furthermore, the actuating member further includes a pivot, and the actuating portion on the actuating member is configured to slide in the sliding groove around the pivot.

[0013] Furthermore, the brake member is sleeved on the push rod, one end of the brake member cooperates with the limit groove of the main body, and one end of the brake member moves between the first limit end and the second limit end of the limit groove, so that the push rod has an idle stroke from the first limit end to the second limit end during the pushing process.

[0014] Furthermore, the idle stroke is 3 to 5 mm.

[0015] To achieve the above purpose, the present invention also provides a glue gun, comprising:

[0016] a first handle and a second handle, wherein the first handle is connected to the second handle via a pivot pin; one of the first handle and the second handle is configured as a fixed handle, and the other is configured as a movable handle that rotates relative to the fixed handle;

[0017] The movable handle is provided with an actuating member, and the actuating member is configured to push the pushing member of the glue gun;

[0018] At least one of the actuating member and the pivot pin is configured to be positionally adjustable so that it can switch between at least two gears, thereby changing the ratio of the distance between the pivot pin and the force application point on the movable handle and the distance between the pivot pin and the force receiving point of the actuating member, thereby achieving a change in the force applied to the push member and a change in the movement rate of the push rod.

[0019] Furthermore, the distance between the axis of the actuating member and the axis of the pivot pin is adjustable, so that the pivot pin or the actuating member can be switched between the at least two gear positions.

[0020] Furthermore, a slide groove is provided on one of the first handle and the second handle, and the slide groove is provided with the at least two gears; the pivot pin is configured to slide in the slide groove to switch between the gears.

[0021] Furthermore, an elastic component is provided between the first handle and the second handle; the elastic component is configured to generate a pre-tightening force on one of the first handle and the second handle which is configured as the movable handle, so that the pivot pin remains in one of the gear positions.

[0022] Furthermore, the pivot pin is a stepped pin having a first axial diameter portion and a second axial diameter portion, the width of the slide groove at the gear position being greater than the width of the connecting portion on the slide groove connecting the gear position; the axial diameter of the first axial diameter portion is greater than the width of the connecting portion, and the second axial diameter portion is smaller than the width of the connecting portion; the stepped pin is configured as follows: the stepped pin undergoes axial movement under the action of external force, and when the first axial diameter portion is located at any one of the gear positions, the stepped pin is maintained at the gear position, and when the second axial diameter portion is located at the gear position, the stepped pin can slide along the slide groove.

[0023] Furthermore, the stepped pin shaft has a pressing end, and an elastic component is sleeved on the pressing end. The stepped pin shaft is configured as follows: under the biasing action of the elastic component, the first shaft diameter portion is located in the gear position; when the pressing end is pressed, the stepped pin shaft undergoes the axial movement, so that the second shaft diameter portion enters the gear position; when the pressing end is released, the stepped pin shaft undergoes the opposite axial movement under the restoring force of the elastic component, so that the first shaft diameter portion re-enters the gear position.

[0024] Furthermore, one end of the step pin shaft is connected to the pressing part, and at least one positioning pin is provided on the pressing part, and the axial direction of the positioning pin is parallel to the axial direction of the step pin shaft; the sliding groove is provided on the first handle, and at least one positioning groove is provided on the second handle, and the positioning pin passes through the positioning groove and is configured to slide in the positioning groove; an elastic component is sleeved on the positioning pin; wherein, the step pin shaft and the positioning pin are configured to move together with the pressing part, and under the biasing action of the elastic component, the first shaft diameter part is located in the gear position, when the pressing part is pressed, the step pin shaft and the positioning pin perform the axial movement, so that the second shaft diameter part enters the gear position, and when the pressing part is released, the positioning pin and the step pin shaft perform opposite axial movement under the restoring force of the elastic component, so that the first shaft diameter part re-enters the gear position.

[0025] Furthermore, the glue gun further includes a blocking piece arranged opposite to the pressing portion, and the other ends of the stepped pin and the positioning pin are connected to the blocking piece via fasteners.

[0026] Furthermore, the pressing portion is provided with a first positioning pin and a second positioning pin, and the second handle is provided with a first positioning groove corresponding to the first positioning pin, and a second positioning groove corresponding to the second positioning pin.

[0027] Furthermore, the first positioning pin, the second positioning pin and the step pin shaft are distributed in a triangle.

[0028] Furthermore, the first positioning pin and the second positioning pin are on the same straight line.

[0029] Furthermore, a boss is provided on the outer surface of the pressing portion.

[0030] Furthermore, the sliding groove is an arc-shaped groove or a straight-line groove.

[0031] Furthermore, the first handle is provided with a slide groove, and the slide groove is provided with the at least two gears; the actuating portion is configured to slide in the slide groove to switch between the gears.

[0032] Furthermore, the actuating member further includes a pivot, and the actuating portion on the actuating member is configured to slide in the sliding groove around the pivot.

[0033] Furthermore, the glue gun also includes:

[0034] A brake member is sleeved on the push rod of the glue gun. A compression spring is provided between the brake member and the main body of the glue gun. The brake member is configured to clamp the push rod under the push of the compression spring, so that the push rod can only move in the direction of colloid outflow.

[0035] Furthermore, a limiting groove is provided on the main body, and one end of the brake member is located in the limiting groove; the limiting groove has a first limiting end and a second limiting end, and the brake member is configured to move between the first limiting end and the second limiting end, so that the push rod has an idle stroke from the first limiting end to the second limiting end during the pushing process.

[0036] Furthermore, the idle stroke is 3 to 5 mm.

[0037] To achieve the above purpose, the present application also provides a glue gun, comprising:

[0038] a trigger assembly comprising a movable handle and a fixed handle connected by a pivot pin;

[0039] A main body, one end of which forms a receiving portion for receiving the colloid; the other end of the main body is connected to the fixed handle;

[0040] A push rod, one end of which is provided with a pushing body located in the accommodating portion, and the pushing body is configured to reciprocate with the push rod; the other end of the push rod is sleeved with a pushing piece;

[0041] an actuating member, the actuating member being disposed on the movable handle and configured to push the pushing member;

[0042] a brake member, sleeved on the push rod, with a compression spring provided between the brake member and the main body, and configured to clamp the push rod under the push of the compression spring, so that the push rod can only move in the direction of the colloid outflow;

[0043] In which, the distance between the actuator and the pivot pin is set to be adjustable, so that the glue gun switches between at least two gears, thereby changing the ratio of the distance between the pivot pin and the force application point on the movable handle and the distance between the pivot pin and the force point of the actuator, thereby realizing the change of the force applied to the push member and the change of the movement rate of the push rod.

[0044] Further, the movable handle has a slide groove, and the slide groove has a first gear and a second gear; the actuator is configured to slide in the slide groove to switch between the first gear and the second gear; or the pivot pin is configured to slide in the slide groove to switch between the first gear and the second gear.

[0045] In order to achieve adjustable gear position of the glue gun, the utility model provides a glue gun comprising:

[0046] A main body, one end of which forms a receiving portion for receiving the rubber cartridge;

[0047] a first handle and a second handle, wherein the first handle is connected to the second handle via a pivot pin; one of the first handle and the second handle is configured as a fixed handle, and the other is configured as a movable handle that rotates relative to the fixed handle; the fixed handle is connected to the other end of the body;

[0048] Wherein, the movable handle is provided with an actuating portion, and the actuating portion is configured to push the pushing member of the glue gun;

[0049] At least one of the actuating portion and the pivot pin is configured to be positionally adjustable, so that the distance between the actuating portion and the pivot pin is changed, thereby achieving switching between at least two gear positions.

[0050] Furthermore, the glue gun also includes an operating component, which is connected to the actuating portion and is configured so that the operating component moves under the drive of an external force to drive the actuating portion and one of the pivot pins to move, so as to switch between the at least two gears.

[0051] Furthermore, a slide groove is provided on the movable handle, and the slide groove is provided with the at least two gears; the actuating portion is configured to slide in the slide groove under the drive of the operating component to switch between the gears.

[0052] Furthermore, one end of the operating assembly is pivotally connected to the main body, and the other end of the operating assembly is provided with an operating portion.

[0053] Furthermore, the operating assembly includes a toggle member, which is rotatably connected to the main body via a pivot, and one end of the actuating portion is connected to the toggle member.

[0054] Further, the operating assembly includes a first actuating plate, a first end portion of the first actuating plate is rotatably connected to the main body via a pivot, and a second end portion of the first actuating plate is provided with the operating portion.

[0055] Furthermore, a first groove is provided on the first actuating plate, one end of the actuating portion is accommodated in the first groove, and the actuating portion is configured to slide along the first groove when the gear is switched.

[0056] Furthermore, a second groove is provided on the first actuating plate, a first indicator block is provided on the main body, the first indicator block is located in the second groove, and the first actuating plate is configured so that when it rotates, the second groove slides relative to the first indicator block.

[0057] Furthermore, a guide groove is provided on the main body, the first actuating plate has a third end portion, and a guide column is provided at the third end portion, which is located in the guide groove and configured to slide along the guide groove.

[0058] Furthermore, the operating assembly further includes a second actuating plate, which is arranged on a side of the main body opposite to the first actuating plate, and the pivot passes through the main body and is connected to the second actuating plate.

[0059] Furthermore, the second actuating plate has the same shape as the first actuating plate.

[0060] Furthermore, the second end portion of the first actuating plate extends to the outside of the main body, one end of the operating portion is connected to the second end portion, and the other end is connected to the second actuating plate.

[0061] Furthermore, the operating part includes a screw, one end of the screw is connected to the first actuating plate, and the other end of the screw is engaged with the second actuating plate. A columnar member is sleeved on the screw, and the columnar member is located between the first actuating plate and the second actuating plate.

[0062] Furthermore, a third slot is provided on the second actuating plate, a second indicator block is provided on the main body, the second indicator block is located in the third slot, and the second actuating plate is configured such that when it rotates, the third slot slides relative to the second indicator block.

[0063] Furthermore, a slide groove is provided on the movable handle, and the slide groove is provided with the at least two gears. The pivot pin is configured to slide in the slide groove under the drive of the operating component to switch between the gears.

[0064] Furthermore, the glue gun also includes:

[0065] A brake member is sleeved on the push rod of the glue gun. A compression spring is provided between the brake member and the main body of the glue gun. The brake member is configured to clamp the push rod under the push of the compression spring, so that the push rod can only move in the direction of colloid outflow.

[0066] Furthermore, a limiting groove is provided on the main body, the limiting groove having a first limiting end and a second limiting end, one end of the brake member is located in the limiting groove, and the brake member is configured to move between the first limiting end and the second limiting end, so that the push rod has an idle stroke from the first limiting end to the second limiting end during the pushing process.

[0067] Furthermore, the idle stroke is 3 to 5 mm.

[0068] In order to achieve the above object, the present invention also provides a glue gun, comprising:

[0069] a trigger assembly comprising a movable handle and a fixed handle connected by a pivot pin;

[0070] A main body, one end of which forms a receiving portion for receiving the colloid; the other end of the main body is connected to the fixed handle;

[0071] A push rod, one end of which is provided with a pushing body located in the accommodating portion, and the pushing body is configured to reciprocate with the push rod; the other end of the push rod is sleeved with a pushing piece;

[0072] an actuating portion, the actuating portion being disposed on the movable handle and configured to push the pushing member;

[0073] a brake member, sleeved on the push rod, with a compression spring provided between the brake member and the main body, and configured to clamp the push rod under the push of the compression spring, so that the push rod can only move in the direction of the colloid outflow;

[0074] Wherein, at least one of the actuating portion and the pivot pin is configured to be position-adjustable, so that the distance between the actuating portion and the pivot pin is changed, thereby achieving switching between at least two gears.

[0075] Further, the movable handle has a slide groove, and the slide groove has a first gear and a second gear; the actuating part is configured to slide in the slide groove to switch between the first gear and the second gear; or the pivot pin is configured to slide in the slide groove to switch between the first gear and the second gear.

[0076] Compared with the prior art, the present invention has the following beneficial effects: 1) when the pivot pin is close to the actuating part, the force of the actuating part on the pusher increases, which is suitable for colloids with poor fluidity; when the pivot pin is away from the actuating part, the force of the actuating part on the pusher becomes smaller, which is suitable for colloids with good fluidity; 2) an elastic component is arranged between the movable handle and the fixed handle to prevent the pivot pin from automatically jumping to other gears when a grip force is applied to the movable handle, thereby playing the role of a fixed gear; 3) pressing the step pin under the bias of the elastic component can easily achieve multi-gear shifting; 4) the gear can be adjusted to achieve conversion between fast feeding and high-force feeding, allowing users to adjust according to actual needs; 5) the setting of the idle stroke releases the stress in the colloid in the glue barrel, preventing the colloid from flowing out of the glue outlet; 6) by adding an operating component, it is convenient to switch gears and can indicate the current gear; by setting an actuating plate, it is not only convenient to operate but also can protect the internal structure.

[0077] The utility model also provides a glue gun that can switch between the following two states: a first state in which the glue in the glue barrel continues to drip after the handle is released; and a second state in which the glue stops dripping after the handle is released.

[0078] To achieve this purpose, the utility model provides a glue gun, comprising:

[0079] A main body, one end of which forms a receiving portion for receiving a glue barrel;

[0080] a fixed handle connected to the other end of the body;

[0081] a movable handle pivotally connected to the fixed handle;

[0082] a push rod, one end of which is located in the accommodating portion;

[0083] a brake member, disposed on the push rod;

[0084] A movable part is provided on the main body; the movable part is configured to lock the braking part to continuously apply force on the colloid in the glue barrel so that the internal stress of the colloid is maintained, and release the braking part to release the force applied to the colloid in the glue barrel, thereby releasing the internal stress of the colloid.

[0085] Furthermore, a limiting groove is provided on the main body, the limiting groove has a first limiting end and a second limiting end, one end of the braking member is located in the limiting groove, and the braking member is configured to move between the first limiting end and the second limiting end.

[0086] Furthermore, the movable part is configured to be movable; the movable part has a first position and a second position. In the first position, the movable part locks the brake part, so that after the movable handle is released, the internal stress of the colloid is still maintained, so that the colloid in the glue barrel continues to drip; in the second position, the movable part releases the lock of the brake part, so that after the movable handle is released, the internal stress of the colloid is released, so that the colloid no longer drips.

[0087] Furthermore, the movable member is pivotally connected to the main body, and the movable member has an end facing the brake member; when the movable member is in the first position, the end locks the brake member; when the movable member is in the second position, the end releases the brake member.

[0088] Furthermore, a protruding piece is provided on the top of the main body, the limiting groove is formed on the protruding piece, and the movable member is pivotally connected to the protruding piece.

[0089] Furthermore, a pin is provided on the protruding piece, a first through hole is provided on the movable member, and the first through hole is sleeved on the pin.

[0090] Furthermore, the first through hole is located in the middle of the movable part.

[0091] Furthermore, the movable member has a second through hole, and the protruding piece is provided with a positioning platform. When the movable member is located at the first position, a portion of the positioning platform is embedded in the second through hole.

[0092] Furthermore, the positioning platform is a trapezoidal platform, the side surfaces of the trapezoidal platform are inclined, and the size of the top of the trapezoidal platform is smaller than the size of the bottom of the trapezoidal platform.

[0093] Furthermore, the movable member is provided with a corner portion, the corner portion faces the main body, and when the movable member is located at the second position, the corner portion contacts the main body to block the movable member.

[0094] Furthermore, the movable member is provided with an arc portion, the arc portion and the corner portion are located on the same side of the movable member, and the arc portion is always in contact with the main body.

[0095] Furthermore, the movable part includes a first part and a second part that are identical and symmetrically arranged, a gap is provided between the first part and the second part, and the protrusion is inserted into the gap; the first part and the second part are connected together by a connecting portion.

[0096] Furthermore, the connecting portion is provided with a proximal end and a distal end, and the movable member is configured such that when the proximal end is pressed, the movable member rotates toward the first position; when the distal end is pressed, the movable member rotates toward the second position.

[0097] Furthermore, the rotating shaft of the movable member is arranged at an end away from the braking member.

[0098] Furthermore, the movable member is configured such that: when an end of the movable member opposite to the rotating shaft is pressed, the movable member moves toward the first position.

[0099] Furthermore, the movable member is arranged on a side surface of the protruding piece, and the rotating shaft of the movable member is arranged on an end of the movable member away from the braking member.

[0100] Furthermore, the rotating shaft of the movable part includes a screw passing through the protruding piece and a nut arranged at one end of the screw, and the movable part is provided with a sleeve sleeved on the nut.

[0101] Furthermore, a blind hole is provided on the movable part, the blind hole and the sleeve are provided on the same side of the movable part, a protrusion is provided on the convex piece, and an elastic element connects the protrusion and the blind hole respectively.

[0102] Furthermore, a groove is provided on the movable member, and a blocking portion is protrudingly provided on the protruding piece, and the blocking portion falls into the groove when the movable member is located at the second position.

[0103] Furthermore, the blocking portion is obliquely arranged on the protruding piece.

[0104] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] Figure 1 This is a schematic structural diagram of a glue gun according to Example 1 of the present utility model;

[0106] Figure 2 yes Figure 1 Schematic diagram of partial structural decomposition of the glue gun;

[0107] Figure 3 yes Figure 1 Schematic diagram of the first gear in;

[0108] Figure 4 yes Figure 1 The second gear intention in ;

[0109] Figure 5 This is a schematic structural diagram of a glue gun according to Example 2 of the present utility model;

[0110] Figure 6 yes Figure 5 Schematic diagram of partial structural decomposition of glue gun;

[0111] Figure 7 yes Figure 5 AA direction cross-sectional view of the glue gun;

[0112] Figure 8 yes Figure 5 Schematic diagram of the structure of the step pin;

[0113] Figure 9 yes Figure 5 The slide in the figure is a straight-line structural diagram;

[0114] Figure 10 This is a schematic structural diagram of a glue gun according to Example 3 of the present utility model;

[0115] Figure 11 yes Figure 10Schematic diagram of the local structure in;

[0116] Figure 12 yes Figure 10 a cross-sectional view of the actuator in FIG.

[0117] Figure 13 This is a schematic structural diagram of a glue gun according to embodiment 4 of the present invention;

[0118] Figure 14 yes Figure 13 a rear view of a portion of;

[0119] Figure 15 yes Figure 13 Schematic diagram of the decomposition;

[0120] Figure 16 yes Figure 13 A partial enlarged view of

[0121] Figure 17 yes Figure 15 Schematic diagram from another perspective;

[0122] Figure 18 yes Figure 15 CC direction cross-sectional view;

[0123] Figure 19 yes Figure 15 DD direction cross-sectional view;

[0124] Figure 20 is a schematic diagram of the connection between the brake member and the main body in Examples 1-4;

[0125] Figure 21 Schematic diagram of another connection method between the brake member and the main body in Examples 1-4;

[0126] Figure 22 is a structural schematic diagram of the glue gun of Example 5 in the first state;

[0127] Figure 23 yes Figure 22 A partial enlarged schematic diagram;

[0128] Figure 24 is a schematic structural diagram of the glue gun of Example 5 in the second state;

[0129] Figure 25 yes Figure 24 A partial enlarged schematic diagram;

[0130] Figure 26 is a partially exploded schematic diagram of the glue gun of Example 5;

[0131] Figure 27 1 is a schematic structural diagram of a positioning platform of a glue gun in Example 5;

[0132] Figure 28 is a partially enlarged schematic diagram of the glue gun of Example 5 in the second state;

[0133] Figure 29 is a schematic structural diagram of the glue gun of Example 5 from another perspective;

[0134] Figure 30 is a schematic structural diagram of the glue gun of Example 6 in the first state;

[0135] Figure 31 is a schematic structural diagram of the glue gun of Example 6 in the second state;

[0136] Figure 32 is a partially enlarged schematic diagram of the glue gun of Example 7 in the first state;

[0137] Figure 33 yes Figure 32 Schematic diagram of the structure on the reverse side;

[0138] Figure 34 yes Figure 32 Axonometric diagram of

[0139] Figure 35 yes Figure 32 Schematic diagram of the decomposition;

[0140] Figure 36 yes Figure 35 Schematic diagram from another angle;

[0141] Figure 37 yes Figure 35 Schematic diagram from another angle;

[0142] Figure 38 is a front view of the glue gun of Example 8;

[0143] Figure 39 yes Figure 38 Axonometric diagram of

[0144] Figure 40 is a schematic diagram of Example 8 with the first actuating plate removed;

[0145] Figure 41 yes Figure 40 Axonometric diagram of

[0146] Figure 42 A schematic diagram showing the gear positions in Example 8 is shown;

[0147] Figure 43 is a schematic diagram of the actuating portion of Example 8 in the first gear position;

[0148] Figure 44is a schematic diagram of the actuating portion of Example 8 in the second gear position;

[0149] Figure 45 is an exploded schematic diagram of Example 8;

[0150] Figure 46 yes Figure 45 Schematic diagram of the decomposition from another perspective. DETAILED DESCRIPTION

[0151] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0152] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The dimensions and thicknesses of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thicknesses of components in some places in the drawings are exaggerated.

[0153] Example 1

[0154] Figure 1-4 A preferred embodiment of the present invention is shown in FIG. Figure 1 and 2 As shown, the glue gun of this embodiment includes a propulsion device, a main body 3, and a trigger mechanism. One end of the main body 3 forms a cylindrical housing 1 for accommodating a glue cartridge. The other end of the main body 3 is hingedly connected to the trigger mechanism via fasteners or integrally formed to form a gun-shaped fixed handle 16.

[0155] The pushing device includes a pusher 8, a push rod 2, and a pusher body 10. The first end of the pusher 2 is placed in the accommodating portion 1. One end of the accommodating portion 1 is connected to the main body 3, and the other end is provided with an outlet for the nozzle of the rubber cartridge to pass through. The pusher body 10 is fixed to the end of the first end of the pusher 2 and can reciprocate with the pusher 2. The second end of the pusher 2 is sleeved with the pusher 8, and a return spring 7 is provided between the pusher 8 and the main body 3. The trigger device pushes the pusher 8, causing the pusher 2 and the pusher body 10 to move toward the outlet of the accommodating portion 1 together, and the return spring 7 resets the pusher 8. The pusher 2 is also provided with a brake member 4, and a compression spring 9 is provided between the brake member 4 and the main body 3. Under the push of the compression spring 9, the brake member 4 clamps the pusher 2, so that the pusher 2 can only move toward the accommodating portion 1. When the rubber cartridge needs to be installed, the brake member 4 is pressed to release the pusher 2 so that the position of the pusher 2 can be adjusted. The brake member 4 cooperates with the retaining groove 31 of the main body 3. One end of the brake member 4 moves between the first retaining end 32 and the second retaining end 33 of the retaining groove 31. When the brake member 4 is at the second retaining end 33, the brake member 4 engages the push rod 2 under the elastic force of the compression spring 9. During glue dispensing, the push member 8 moves toward the exit of the accommodating portion 1, and the push rod 2 and the brake member 4 move together. The brake member 4 moves from the second retaining end 33 to the first retaining end 32. There is no relative displacement between the push rod 2 and the brake member 4, that is, the brake member 4 has an idle stroke. When the brake member 4 moves to the first retaining end 32, the brake member 4 is blocked by the first retaining end 32 and no longer moves. At this point, the brake member 4 no longer engages the push rod 2, allowing the push rod 2 to continue moving toward the accommodating portion 1. At this time, relative displacement occurs between the push rod 2 and the brake member 4. The idle stroke is the distance between the first retaining end 32 and the second retaining end 33. Preferably, the idle stroke is 3 to 5 mm. When glue dispensing is complete and the movable handle 5 is released, the pusher 8, under the action of the return spring 7, moves away from the accommodating portion 1, driving the push rod 2 with it. When the push rod 2 reaches a position where it is caught by the brake member 4, the brake member 4 also moves with the push rod 2. At this time, the brake member 4 moves from the first limit end 32 to the second limit end 33, releasing the force acting on the glue in the glue barrel. This relieves the internal stress of the glue in the glue barrel and prevents the glue from flowing out of the glue outlet. When the brake member 4 moves to the second limit end 33, the brake member 4 locks the push rod 2 under the action of the compression spring 9. At this time, the pusher 8 continues to move away from the push rod 2 until the movable handle 5 is reset. Repeat this action to continue glue dispensing.

[0156] The trigger assembly includes a movable handle 5 and a fixed handle 16. The movable handle 5 is connected to the fixed handle 16 via a pivot pin 12. The movable handle 5 is also provided with an actuator 11, which passes through a hole 14 in the movable handle 5 and contacts the push member 8. The movable handle 5 is provided with a slide 13. The slide 13 is an arc-shaped structure with two gears, namely a first gear 131 and a second gear 132. The first gear 131 and the second gear 132 can be located at the two ends of the slide 13, respectively. The width of the slide 13 at the first gear 131 and the second gear 132 is greater than the width of the rest of the slide 13. The pivot pin 12 can slide within the slide 13. When the pivot pin 12 slides to the first gear 131 on the slide 13, a tension spring 6 is provided between the movable handle 5 and the fixed handle 16. One end of the tension spring 6 is connected to the tension spring slot 15 of the movable handle 5, and the other end is connected to the fixed handle 16. Tension spring 6 preloads movable handle 5, maintaining pivot pin 12 in one of the gear positions. Applying force to movable handle 5 causes pivot pin 11 to push push surface 17 of push member 8, displacing push rod 2. Removing the applied force locks push rod 2, and return spring 7 causes push member 8 to slide back to its initial position relative to main body 3, allowing the next cycle to begin.

[0157] Figure 3 and 4 The figure shows the change of the distance between the pivot pin 12 and the actuator 11 between different gears. When the pivot pin 12 is in the first gear 131, the distance between the pivot pin 12 and the actuator 11 is set to L3, where the distance refers to the distance between the axis of the pivot pin 12 and the axis of the actuator 11 (in Figure 3 and 4Among them, the axes of the pivot pin 12 and the actuator 11 are both perpendicular to the paper surface and face outward, that is, on the side surface 51 of the movable handle 5, which represents the distance between the center of the circle representing the pivot pin 12 and the center of the circle representing the actuator 11). The vertical distance between the pivot pin 12 and the applied force on the movable handle 5 is set as L4, and this vertical distance refers to the distance between the axis of the pivot pin 12 and the force application point 52 located on the movable handle 5 in the vertical direction Y. When the pivot pin 12 is in the second gear position 132, the distance between the pivot pin 12 and the actuator 11 is set as L1, and the vertical distance between the pivot pin 12 and the applied force on the movable handle 5 is set as L2. Since the position of the pivot pin 12 changes relative to the actuator 11 when in different gear positions, L1 > L3; and regardless of which gear position the pivot pin 12 is in, its position remains unchanged, so L2 = L4. When adjusting the gear position of the pivot pin 12 to the second gear position 132 and applying a force F on the movable handle 5, the force applied by the actuator 11 on the pusher 8 is F1, then F * L2 = F1 * L1; when adjusting the gear position of the pivot pin 12 to the first gear position 131 and applying the same force F on the movable handle 5, the force applied by the actuator 11 on the pusher 8 is F2, then F * L4 = F2 * L3; thus, it can be seen that when applying the same force F on the movable handle, since L1 > L3, so F1 < F2, that is, when in the first gear position 131, the driving force generated by applying the same force at the movable handle 5 is greater than that in the second gear position 132. When in the second gear position 132, when the movable handle 5 moves, it moves around the pivot pin 12 as the center point, and the actuator 11 moves in an arc with a radius of L1, pushing the pusher 8 forward. When in the first gear position 131, when the movable handle 5 moves, it moves around the pivot pin 12 as the center point, and the actuator moves in an arc with a radius of L3, pushing the pusher 8 forward. Since L1 > L3, when applying the same force F on the movable handle, it advances a farther distance in the gear position 132. Therefore, in the gear position 132, it is suitable for colloids with lower viscosity, using a smaller thrust, and can advance a larger process. By changing the gear position of the pivot pin 12, the distance between the pivot pin 12 and the actuator 11 is changed, so that the thrust exerted by the actuator 11 on the pusher 8 is different, to change the pushing process of the push rod 2. Therefore, it can adapt to fluids with different fluidities. In other words, in this embodiment, by adjusting the proportional relationship between the distance between the pivot pin 12 and the force application point 52 and the distance between the pivot pin 12 and the force receiving point (i.e., the point where the actuator 11 contacts the pusher), the switching between the magnitude of the force applied to the pusher and the transmission rate (the speed at which the push rod is pushed) is achieved.

[0158] In other embodiments, the chute 13 can be provided on the fixed handle 5, and the chute 13 is provided with two or more gear positions. The pivot pin 12 is arranged to be slidable in the chute 13 to switch between the gear positions 131 and 132.

[0159] Example 2

[0160] In other embodiments, Figure 5-9 As shown, the tension spring 6 between the movable handle 5 and the fixed handle 16 is removed. The pivot pin 12 is set as a stepped pin 102, which has a pressing end and an end fixed to the screw 101. The pressing end is sleeved with a spring 104 and a washer 105. The stepped pin 102 has a first shaft diameter portion 107 and a second shaft diameter portion 108 (see Figure 8 ). The chute 103 has a first gear position 1031 and a second gear position 1032, and the first gear position 1031 and the second gear position 1032 can be located at the two ends of the chute 103 respectively. The width of the chute 103 at the first gear position 1031 and the second gear position 1032 is greater than the width of the other parts of the chute 103 (that is, the middle part connecting the first gear position 1031 and the second gear position 1032). The stepped pin 102 can slide in the chute 103, thereby moving to the first gear position 1031 or the second gear position 1032. The shaft diameter of the first shaft diameter portion 107 is greater than the width of the middle part of the chute 103, and the shaft diameter of the second shaft diameter portion 108 is smaller than the width of the chute 103. Under the biasing action of the spring 104, the first axial diameter portion 107 is located in the gear position 1031 or 1032. When the pressing end is pressed, the step pin 102 moves axially, causing the second axial diameter portion 1032 to enter the gear position 1031 or 1032. At this time, the axial diameter of the second axial diameter portion 1032 is smaller than the width of the slide 103, so that the step pin 102 can be moved and slid along the slide 103, thereby causing the step pin 102 to move from one gear position to another gear position for gear switching. When the pressing end is released, the step pin 102 moves axially in the opposite direction under the restoring force of the spring 104, causing the first axial diameter portion 107 to re-enter the current gear position. Since the axial diameter of the first axial diameter portion 107 is larger than the width of the slide 103, the step pin 102 is fixed in the current position of the slide 103, thereby fixing the step pin 102 in the current gear position. Preferably, as Figure 9As shown, the chute 301 is linear and has multiple gear positions 3011, 3012, and 3013. The width of the chute 301 at the gear position is greater than the width of the other parts (i.e., the portion between adjacent gear positions). The step pin 302 slides within the chute 301 to achieve gear switching. In this embodiment, by changing the position of the step pin in the chute, the step pin can be positioned in different gear positions. At this time, the spacing between the step pin and the actuator 11 changes. This changes the vertical spacing between the step pin and the force application point on the movable handle 5, resulting in different thrusts exerted by the actuator 11 on the push member 8, thereby changing the pushing process of the push rod 2. Therefore, it can adapt to fluids of different fluidities. In other words, this embodiment achieves the switching between the magnitude of the force applied to the push member and the transmission rate (the speed at which the push rod is pushed) by adjusting the proportional relationship between the spacing between the step pin and the force application point and the spacing between the step pin and the force receiving point (i.e., the point where the actuator 11 contacts the push member).

[0161] Example 3

[0162] Figure 10-12 Another preferred embodiment of the present invention is shown. The movable handle 5 is hinged to the fixed handle 16 via a pivot pin 201. The movable handle 5 is also provided with a slide groove 202. The actuator also includes a pivot 204 and an actuator portion 206 in contact with the push member 8. The actuator portion 206 is configured to slide in the slide groove 202 around the pivot 204. The slide groove 202 has a first gear position 2021 and a second gear position 2022, and the first gear position 2021 and the second gear position 2022 can be located at the two ends of the slide groove 202, respectively. The toggle member 203 is connected to the pivot 204 and the actuator portion 206. The toggle member 203 is used to make the actuator portion 206 slide between the two ends of the slide groove 202, thereby realizing the change of the contact position of the actuator portion 206 with the push member 8 and realizing the switching between the gear positions 2021 and 2022. When the actuator 206 is in different positions, the distance between the actuator 206 and the pivot pin 201 varies, and the vertical distance between the pivot pin 201 and the force application point of the movable handle 5 varies. This results in different thrusts exerted by the actuator 206 on the pusher 8, thereby varying the pushing progress of the push rod 2 and thus adapting to fluids of varying fluidity. In Examples 1 and 2, the distance between the pivot pin and the actuator is varied by changing the position of the pivot pin; however, this embodiment achieves a change in the distance between the actuator and the pivot pin by changing the position of the actuator 206. In other words, this embodiment adjusts the magnitude of the force applied to the pusher and the transmission rate (the speed at which the push rod is pushed) by adjusting the proportional relationship between the distance between the pivot pin 201 and the force application point and the distance between the pivot pin 201 and the force receiving point (i.e., the point at which the actuator 206 contacts the pusher 8).

[0163] Example 4

[0164] Figure 13-19 Another preferred embodiment of the present invention is shown. Figure 13 Most features of this embodiment are identical to those of the first embodiment. For example, the push member 8, push rod 2, pusher 10, main body 3, accommodating portion 1, brake member 4, movable handle 5, return spring 7, compression spring 9, actuator 11, fixed handle 16, and their connection methods are the same as those of the first embodiment and will not be described in detail. The difference between this embodiment and the first embodiment lies in the different method of shifting the gear position by the pivot pin.

[0165] See also Figure 15 In this embodiment, the actuator 11 passes through the hole 14 on the movable handle 5 and contacts the push member 8 to drive the push member 8, so that the push rod 2 moves. The movable handle 5 is connected to the fixed handle 16 via a pivot pin 401. When a force is applied to the movable handle 5, the movable handle 5 can rotate relative to the fixed handle 16 around the pivot pin 401. A sliding groove 402 is provided on the movable handle 5. Figure 16 The slide 402 has a first gear position 4021 and a second gear position 4022. The first gear position 4021 and the second gear position 4022 can be respectively set at the two ends of the slide 402. That is, holes are formed at both ends of the slide 402 as the first gear position 4021 and the second gear position 4022. The two holes are connected to form a connecting portion 4023, thereby forming the slide 402. The diameter of the hole is greater than the width of the connecting portion 4023. The pivot pin 401 can slide in the slide 402 to move to the first gear position 4021 or the second gear position 4022. Figure 15 and Figure 19 The pivot pin 401 has a stepped pin structure, comprising a first diameter portion 4011 and a second diameter portion 4012. The diameter of the first diameter portion 4011 is greater than the width of the connecting portion 4023 of the chute 402, while the diameter of the second diameter portion 4012 is less than the width of the connecting portion 4023 of the chute 402. When the first diameter portion 4011 is in the first gear position 4021 or the second gear position 4022 of the chute 402, the pivot pin 401 cannot slide along the chute 402, thereby maintaining the pivot pin 401 in the current gear position. When the second diameter portion 4012 is within the chute 402, the diameter of the second diameter portion 4012 is less than the width of the chute 402, releasing the pivot pin 401 from its fixed position. This allows the pivot pin 401 to slide along the chute 402 under the action of an external force to switch gears.

[0166] See also Figure 15 、 Figure 17-19One end of the pivot pin 401 is connected to a pressing portion 403, which is further provided with at least one positioning pin 404. The axial direction of the positioning pin 404 is parallel to the axial direction of the pivot pin 401. At least one positioning slot 405 is provided on the fixed handle 16. Each positioning pin 404 passes through each positioning slot 405 and can slide along the positioning slot 405 in a direction that is substantially the same as the sliding direction of the pivot pin 401 within the slide slot 402. A spring 406 is sleeved on the positioning pin 404. By pressing the pressing portion 403, the pivot pin 401 and the positioning pin 404 both move along their respective axial directions, the second axial diameter portion 4012 of the pivot pin 401 moves into the slide groove 402, and the spring 406 on the positioning pin 404 is compressed; then the pressing portion 403 is driven to move along the length direction of the slide groove 402, the pivot pin 401 slides in the slide groove 402, and the positioning pin 404 slides in the positioning groove 405. When the pivot pin 401 switches to the preset gear position, the pressing portion 403 is released, and under the bias of the spring 406, the pressing portion 403 is reset, and the pivot pin 401 and the positioning pin 404 both move with the pressing portion 403. At this time, the first axial diameter portion 4011 of the pivot pin 401 moves to the gear position 4021 or 4022 of the slide groove 402, so that the pivot pin 401 is maintained at the current gear position.

[0167] Preferably, there are two positioning pins 404. Accordingly, two positioning slots 405 corresponding to the positioning pins 404 are provided on the movable handle 16. A spring 406 is sleeved around each positioning pin 404. The two positioning pins 404 and the pivot pin 401 form a triangle. The two positioning pins 404 can be located on the same straight line, which can be aligned with the length of the positioning slots 405. The pressing portion 403 can be roughly triangular in shape.

[0168] A blocking piece 409 is provided on a side opposite to the pressing portion 403 , and the other ends of the pivot pin 401 and the positioning pin 404 are connected to the blocking piece 409 via a fastener 407 such as a screw.

[0169] The movable handle 5 is provided with a mark 408 for indicating that the pivot pin 401 is located at different gears. The outer surface of the pressing portion 403 is provided with a boss 4031 for convenient operation of the pressing portion 403 by the user to press down the pressing portion 403 and push the pressing portion 403.

[0170] Similar to embodiments 1-3, when the pivot pin 401 in this embodiment is located at different gears in the slide groove 402, the distance between the pivot pin 401 and the actuator 11 (i.e., the distance between the axis of the pivot pin 401 and the axis of the actuator 11 on the side 51 of the movable handle 5) is different, and the vertical distance between the pivot pin 401 and the force application point 52 of the movable handle 5 is different, so that the contact position between the actuator 11 and the push member 8 is different, and the thrust acting on the push member 8 is different, so as to change the pushing process of the push rod 2, thereby being able to adapt to fluids of different fluidities. In other words, this embodiment achieves the switching between adjusting the magnitude of the force applied to the push member and the transmission rate (the speed at which the push rod is pushed) by adjusting the proportional relationship between the distance between the pivot pin 401 and the force application point and the distance between the pivot pin 401 and the force receiving point (i.e., the point where the actuator 11 contacts the push member).

[0171] Example 5

[0172] In Examples 1-4, see Figure 20 A limiting groove 31 is provided on the upper portion of the main body 3 near the brake member 4, and one end (top end 41) of the brake member 4 moves in the limiting groove 31. Under the constraints of the first limiting end 32 and the second limiting end 33 of the limiting groove 31, when dispensing glue, the brake member 4 moves from the second limiting end 33 to the first limiting end 32; after dispensing glue, the handle is released and the brake member 4 moves from the first limiting end 32 to the second limiting end 33. Of course, the first limiting end 32 can also be removed, and the end 34 of the main body 3 facing the brake member 4 can be used as the limiting end (see Figure 21 ). In both of the above methods, no matter which one is used, the brake member 4 has an idle stroke during the movement, that is, during the glue feeding process, the actuator 4 will move together with the push rod 2, and there will be no relative displacement between the two. When the glue gun is not working, after releasing the handle, the brake member 4 will move backward (in the X direction) with the push rod 2 (see Figure 20 In the direction X), the force acting on the colloid is released to release the stress in the colloid. At this time, the colloid in the glue barrel can be prevented from dripping.

[0173] However, in some application scenarios, it is desired to continue to apply force to the colloid in the colloid barrel after the handle is released so that the colloid can continue to drip. In this case, it is necessary to lock the brake member 4 after the handle is released so that the brake member 4 does not move when the handle is released, thereby keeping the brake member 4 in the force-applying state and allowing the colloid to continue to drip.

[0174] At the same time, whether to lock the brake member 4 can be selected according to user needs, that is, the brake member 4 is set to switch between a locked state and a movable state. In order to solve this problem, this embodiment is improved on the basis of embodiments 1-4, which is described in detail below.

[0175] See also Figure 22-25 The arrangement of the brake member 4 is the same as that of embodiments 1-4, namely: the brake member 4 is arranged on the push rod 2, a compression spring 9 is provided between the brake member 4 and the main body 3, the top end of the brake member 4 is engaged with the limiting groove 31 of the main body 3, and the top end of the brake member 4 can move forward and backward in the limiting groove 31 (the forward direction is the Y direction, and the backward direction is the X direction). Figure 22-23 A movable member 500 is provided at the top of the main body 3. The movable member 500 can move toward the end 501 of the brake member 4 under the action of an external force. When the end 501 moves to a position (the first position) in contact with the top 41 of the brake member 4 (or there is a small gap between the end 501 and the top 41), the end 501 and the second limiting end 33 together lock the brake member 4, preventing the brake member 4 from moving within the limiting groove 31. The brake member 4 will jam the push rod 2, preventing the push rod 2 from moving. At this time, the glue gun is in the first state, that is, after the handle is released, the reset force of the reset spring 7 is insufficient to overcome the force of the brake member 4 on the push rod 2, causing the brake member 4 to remain jammed with the push rod 2. The push rod 2 does not move, and thus force is still exerted on the colloid. The stress in the colloid is not released, and the colloid continues to drip.

[0176] like Figures 24-25As shown, the user applies an external force to the movable member 500, causing the end 501 of the movable member 500 to move to a position away from the brake member 4 (the second position). At this point, the end 501 of the movable member 500 no longer contacts the top end of the brake member 4, and throughout the entire travel of the brake member 4, the end 501 of the movable member 500 and the brake member 4 do not come into contact. In other words, the movable member 500 does not interfere with the movement of the brake member 4 within the retaining groove 31. The top end 41 of the brake member 4 can move back and forth within the retaining groove 31, that is, the top end 41 of the brake member 4 can move between the end 34 of the main body 3 and the second retaining end 33. When the brake member 4 is at the second retaining end 33, the brake member 4 engages the push rod 2. During glue dispensing, the push member 8 moves toward the accommodating portion 1, and the push rod 2 and the brake member 4 move with it. The brake member 4 moves from the second retaining end 33 to the end 34, and there is no relative displacement between the push rod 2 and the brake member 4, that is, the brake member 4 has a period of idle travel. When the brake member 4 moves to the end 34, it is blocked by the end 34 and no longer moves. At this time, the brake member 4 will not block the push rod 2, allowing the push rod 2 to continue moving toward the accommodating portion 1. At this time, relative displacement occurs between the push rod 2 and the brake member 4. When the movable member 500 is in the second position, the glue gun is in the second state. That is, under the action of the return spring 7, the push member 8 will move away from the accommodating portion, driving the push rod 2 to move together. When the push rod 2 moves to the position where it is blocked by the brake member 4, the brake member 4 will also move with the push rod 2. At this time, the brake member 4 will move from the end 34 to the second limit end 33 to release the force acting on the glue in the glue barrel, thereby relieving the internal stress of the glue in the glue barrel and preventing the glue from flowing out of the glue outlet. That is, the glue will no longer drip.

[0177] The movable part 500 can be of any suitable structure. As long as the end of the movable part can be moved to the first position (the position in contact with the top end 41 of the brake part 4 and lock the brake part 4) and to the second position (the position in which the end 41 of the brake part 4 is out of contact and does not interfere with the movement of the brake part 4), any movable part that meets this requirement can be used in this embodiment.

[0178] like Figure 22-29 , this embodiment provides a preferred implementation, which is as follows:

[0179] See also Figure 26A protrusion 35 is provided at the top of the main body 3. The protrusion 35 extends upward and diagonally rearward from the top of the main body 3. The end of the protrusion 35, facing away from the main body 3, forms a second stopper 33. The second stopper 33 and an end 34 of the main body 3 facing the brake member 4 form a stopper slot 31, within which the top end 41 of the brake member 4 can move back and forth. A movable member 500 is pivotally connected to the protrusion 35. Specifically, the protrusion 35 is provided with a pin 351. The movable member 500 is provided with a first through-hole 502 that is sleeved on the pin 351, allowing the movable member 500 to rotate about the pin 351. When the movable member 500 rotates to the first position, the end 501 of the movable member 500 contacts the top end 41 of the brake member 4 (or has a slight gap therebetween), thereby locking the brake member 4. When the movable member 500 rotates to the second position, the end 501 of the movable member is away from the brake member 4 , so that the brake member 4 can move in the limiting groove 31 , and its movement range is limited by the end 34 of the main body 3 and the second limiting end 33 .

[0180] Preferably, the first through hole 502 of the movable member 500 is located in the middle of the movable member 500 .

[0181] The end surface 503 of the movable member 500 facing the main body 3 can match the shape of the main body 3. In this way, when the movable member 500 moves to the first position, the end surface 503 of the movable member 500 contacts the main body 3. Since the shapes of the two match, the contact between the two is closer (see Figure 23 Through this arrangement, the main body 3 can better restrict the movement of the movable member 500, allowing the movable member 500 to accurately move to the first position. For example, the end 34 of the main body 3 near the brake member 4 is configured as an inclined surface (this inclined surface together with the second limiting end 33 forms the limiting groove 31), and the end surface 503 of the movable member 500 is also configured as an inclined surface that matches this inclined surface.

[0182] In order to better position the movable member 500 in the first position, a second through hole 504 is provided on the movable member 500. Correspondingly, a positioning platform 352 is provided on the protruding piece 35. When the movable member 500 moves to the first position, the second through hole 504 faces the positioning platform 352. In this way, a portion of the positioning platform 352 can be embedded in the second through hole 504, so that the movable member 500 can be accurately positioned in the first position and can also be maintained in the first position. Figure 27Positioning platform 352 is formed by protruding outward from the side of protrusion 35. Its bottom dimension is larger than its top dimension, resulting in an inclined side surface 3521 of positioning platform 352. This allows positioning platform 352 to fit more smoothly with second through-hole 504. Positioning platform 352 can be configured to have a roughly trapezoidal shape in a cross-section parallel to the side of protrusion 35 on which it is located. That is, the top surface 3522 of positioning platform 352 is roughly trapezoidal, and its bottom is also roughly trapezoidal. Positioning platform 352 is a trapezoidal platform. The cross-sectional shape corresponding to second through-hole 504 matches that of positioning platform 352.

[0183] See also Figure 25 and 26 To better position the movable member 500 in the second position, a blocking portion 36 is provided on the main body 3. The blocking portion 36 is located on the end of the tab 35 away from the brake member 4. The blocking portion 36 has an inclined surface facing the tab 35. When the movable member 500 rotates to the second position, the end 505 of the movable member 500 away from the brake member 4 contacts the inclined surface of the blocking portion 36, thereby accurately positioning the movable member 500 in the second position. In another embodiment, the movable member 500 may be provided with a corner portion 506. When the movable member 500 moves to the second position, the corner portion 506 contacts the top of the main body 3, forming a blocking surface, thereby accurately positioning the movable member 500 in the second position. Preferably, the end surface of the movable member 500 facing the main body 3 is provided with an arc portion 507, which is located below the first through hole 502. The side of the arc portion 507 away from the brake member 4 is provided with a corner portion 506, and the shape of the side close to the brake member 4 matches the shape of the main body 3. The arc portion 507 is always in contact with the top of the main body 3, so that the arc portion 507 is equivalent to forming a fulcrum. In another embodiment, see Figure 28 The top 353 of the protrusion 35 is set as an inclined surface, so that when the movable part 500 is in the first position, there is a gap 354 between the end 505 of the movable part 500 away from the brake part 4 and the top of the protrusion 35. When the movable part 500 moves to the second position, the end 505 of the movable part 500 away from the brake part 4 contacts the top of the protrusion 35, forming a barrier, so that the movable part 500 is accurately positioned in the second position.

[0184] The movable member 500 may be arranged on only one side of the protruding piece 35, or may be arranged on both opposite sides of the protruding piece 35. Figure 29As shown, the tab 35 is sheet-shaped, and the movable member 500 includes a symmetrical first portion 510 and a second portion 520. The first portion 510 and the second portion 520 are identical in shape, namely, the first portion 510 is provided with a first through-hole 502, a second through-hole 504, a corner portion 506, an arcuate portion 507, and the second portion 520 is similarly configured. The first portion 510 is located on one side of the tab 35, while the second portion 520 is located on the other side of the tab 35. A gap 511 is formed between the first portion 510 and the second portion 520, into which the tab 35 can be inserted. The first through-hole 504 is provided on both the first portion 510 and the second portion 520. Correspondingly, a pin 351 is provided on both sides of the tab 35, and the two pins 351 are respectively located in the first through-hole 504 of the first portion 510 and the first through-hole 504 of the second portion 520. The first portion 510 and the second portion 520 are connected together by a connecting portion 530, thereby forming the movable member 500 as a single unit. Thus, by pressing the end of the connecting portion 530 (the proximal end 532) facing the brake member 4, the movable member 500 rotates toward the first position; by pressing the end of the connecting portion 530 (the distal end 531) facing away from the brake member 4, the movable member 500 rotates toward the second position.

[0185] Example 6

[0186] like Figure 30 and 31 This embodiment shares most of its structure with that of Embodiment 5, differing only in that, in this embodiment, the rotating shaft 601 of the movable member 600 (i.e., the pin provided on the protruding piece) is provided on the end of the movable member away from the brake member 4. In this embodiment, to operate the movable member, only the end opposite the rotating shaft 601 needs to be pressed to move the movable member 600 to the first position. Reversing the pressure will move the movable member 600 to the second position.

[0187] Example 7

[0188] like Figures 32-37 The difference between this embodiment and embodiment 5 is that the structure of the movable part 700 is different.

[0189] See also Figure 32 The movable member 700 is disposed on one side of the protruding piece 35. A rotating shaft is disposed at the end of the movable member 700 away from the brake member 4. The movable member 700 can be rotated by operating the end 701 of the movable member 700 near the brake member 4. When the movable member 700 is in the first position, the end 701 contacts the brake member 4, thereby locking the brake member 4. When the movable member 700 is in the second position, the end 701 is away from the brake member 4 and no longer hinders the movement of the brake member 4.

[0190] See also Figures 34-37The rotating shaft includes a screw 702 and a nut 703 at one end of the screw 702. The screw 702 passes through the protrusion 35, and the nut 703 is mounted on the screw 702. A sleeve 704 is mounted on the side of the movable member 700 facing the protrusion 35, and the sleeve 704 is mounted on the nut 703. When the movable member 700 is rotated, the sleeve 704 rotates around the screw 702 with the nut 703. The cooperation between the screw 702 and the nut 703 maintains the movable member 700 in its current position.

[0191] A blind hole 706 is provided on the side of the movable member 700 facing the tab 35. Correspondingly, a protrusion 355 is provided on the tab 35. A spring 705 is sleeved over the protrusion 355, with the other end of the spring 705 inserted into the blind hole 706. This exerts a spring force on the movable member 700. Pressing the movable member 700 toward the tab 35 overcomes the spring force of the spring 705, allowing the movable member 700 to rotate. Upon release, the spring force causes the movable member 700 to move away from the tab 35, thereby locking the movable member 700 in its current position.

[0192] A groove 707 is provided on the upper part of the movable part 700, and a blocking portion 356 that can cooperate with the groove 707 is provided on the protrusion 35. The blocking portion 356 is arranged at an angle. When the movable part 700 rotates toward the second position, the blocking portion 356 falls into the groove 707, which can form a blockage for the movable part 700, so that the movable part 700 can be accurately positioned in the second position.

[0193] Example 8

[0194] In Examples 1 and 2, different gear shifts are achieved by switching the position of the pivot pin 12 in the chute 13 or chute 103. In Example 3, different gear shifts are achieved by switching the position of the actuator 206 in the chute 202. The purpose of the gear shifting methods of Examples 1-3 is to change the distance between the actuator and the pivot pin, thereby adjusting the force applied to the pusher and switching between transmission speeds.

[0195] Figures 38-46Example 8 of the present utility model is shown. Example 8 adds a new operating component on the basis of Example 1, 2 or 3, and gear switching can be achieved by pulling the operating component. The operating component can be applied in Example 1, that is, after the operating component is pulled, the pivot pin 12 is driven to switch positions in the slide groove 13 to achieve gear switching. Alternatively, the operating component can be applied in Example 3, that is, the operating component replaces the toggle member 203 and the pivot 204 in Example 3, and connects the actuating part 206 to the operating component. When the operating component is pulled, the actuating part 206 is driven to slide in the slide groove 202, so that the contact position between the actuating part 206 and the push member 8 changes, thereby achieving switching between different gears.

[0196] The following describes in detail the application of the operating component in Example 3 as an example.

[0197] See also Figure 38 and Figure 39 The glue gun of this embodiment includes a propulsion device, a main body 3, and a trigger mechanism. One end of the main body 3 forms a cylindrical housing 1 for accommodating a glue cartridge. The other end of the main body 3 is hingedly connected to the trigger mechanism via fasteners or integrally formed to form a gun-shaped fixed handle 16.

[0198] The pushing device includes a pusher 8, a push rod 2, and a pusher body 10. The first end of the pusher 2 is placed in the accommodating portion 1. One end of the accommodating portion 1 is connected to the main body 3, and the other end is provided with an outlet for the nozzle of the rubber cartridge to pass through. The pusher body 10 is fixed to the end of the first end of the pusher 2 and can reciprocate with the pusher 2. The second end of the pusher 2 is sleeved with a pusher 8, and a return spring 7 is provided between the pusher 8 and the main body 3. The trigger device pushes the pusher 8 so that the pusher 2 and the pusher body 10 move together toward the outlet of the accommodating portion 1, and the return spring 7 resets the pusher 8. The pusher 2 is also provided with a brake member 4, and a compression spring 9 is provided between the brake member 4 and the main body 3. The brake member 4 is pushed by the compression spring 9 to clamp the pusher 2 so that the pusher 2 can only move toward the accommodating portion 1. When the rubber cartridge needs to be installed, the brake member 4 is pressed to release the pusher 2 so that the position of the pusher 2 can be adjusted. The structure of the pushing device is the same as that of Examples 1, 2, and 3.

[0199] The trigger device includes a movable handle 5 and a fixed handle 16. Figure 40 and Figure 41 The movable handle 5 is connected to the fixed handle 16 via a pivot pin 201. The movable handle 5 is hinged to the fixed handle 16 via the pivot pin 201. The movable handle 5 is also provided with a slide groove 202. The actuator includes an actuator portion 206 in contact with the push member 8. The actuator portion 206 is configured to slide in the slide groove 202. Figures 42-44The slide groove 202 has a first gear position 2021 and a second gear position 2022, which can be located at the two ends of the slide groove 202, respectively. By driving the actuator 206 to slide between the two ends of the slide groove 202, the contact position between the actuator 206 and the push member 8 is changed, and the switch between gear positions 2021 and 2022 is achieved. When the actuator 206 is in different gear positions, the distance between the actuator 206 and the pivot pin 201 is different, and the vertical distance between the pivot pin 201 and the force application point of the movable handle 5 is different, thereby causing the actuator 206 to exert different thrust on the push member 8, thereby changing the pushing process of the push rod 2, thereby being able to adapt to fluids of different fluidities. The structure here is the same or similar to that of Example 3.

[0200] In Example 3, Figure 10-12 As shown, the actuating portion 206 is driven by the toggle member 203 to achieve gear switching. Figure 38 and Figure 39 As shown, in this embodiment, an operating assembly 800 is provided. The user drives the operating assembly 800 to drive the actuating portion 206 to change its position in the sliding groove 202 to switch to a different gear position.

[0201] See also Figures 45-46 The operating assembly 800 is pivotally connected to the main body 3, and one end of the actuator 206 is connected to the operating assembly 800 and moves with the operating assembly 800. When the user drives the operating assembly 800 to rotate, the actuator 206 can slide in the sliding groove 202, thereby switching to different gears.

[0202] Preferably, the operating assembly 800 includes a first actuating plate 801, one end 8011 of which (the first end 8011) is connected to the main body 3 via a pivot shaft 802. Specifically, a hole 803 is provided in the main body, into which the pivot shaft 801 is inserted, and one end of the pivot shaft 802 is fixedly connected to the first actuating plate 801. One end 2061 of the actuating portion 206 is connected to the first actuating plate 801. Preferably, the end 2061 is connected to the middle portion of the first actuating plate 801. A first slot 804 is provided in the middle portion of the first actuating plate 801. The end 2061 of the actuating portion 206 is received in the first slot 804 and can slide along the first slot 804. When the first actuating plate 801 is driven to rotate around the pivot shaft 802, the actuating portion 206 slides from one gear position 2021 to another gear position 2022 of the sliding slot 202. At the same time, the end 2061 of the actuating portion 206 slides in the first slot 804, making the gear switching of the actuating portion 206 smoother.

[0203] An operating portion 805 is provided at a second end 8012 of the first actuating plate 801, opposite the pivot axis 802. A user can apply force to the operating portion 805 to rotate the first actuating plate 801. Preferably, the second end 8012 of the first actuating plate 801 extends to the outside of the brake member 4. A crossbar portion perpendicular to the first actuating plate 801 is then provided as the operating portion 805. One end of the operating portion 805 is connected to the second end 8012, and the other end extends to the other side of the main body 3 opposite the first actuating plate 801.

[0204] In order to limit the motion trajectory of the operating assembly 800, preferably, a guide groove 809 is provided at the upper end of the main body 3, and a guide post 810 is accommodated in the guide groove 809, and one end of the guide post 810 is connected to the first actuating plate 801. Preferably, a third end 8014 is provided on the first actuating plate 801, and one end of the guide post 810 is connected to the third end 8014. When the first actuating plate 801 rotates, the guide post 810 slides along the guide groove 809, thereby

[0205] To identify the gear position of the actuator 206, a second slot 811 is provided on the first actuator plate 801, and a first indicator block 812 is provided on the main body 3. The first indicator block 812 falls into the second slot 811. When the first actuator plate 801 rotates, the second slot 811 slides relative to the first indicator block 812, allowing the first indicator block 812 to occupy different positions in the second slot 811. When the actuator 206 falls into the first gear position, the first indicator block 812 is located in the first position in the second slot 811; when the actuator 206 falls into the second gear position, the first indicator block 812 is located in the second position in the second slot 811. The different positions of the first indicator block 812 can intuitively display the current gear position.

[0206] Preferably, a second actuating plate 806 is disposed on the other side of the main body 3 opposite the first actuating plate 801. The shape of the second actuating plate 806 is substantially the same as that of the first actuating plate 801. A pivot shaft 801 extends through the main body 3, with the other end of the pivot shaft 801 connected to the second actuating plate 806. A guide post 810 extends through the main body 3, with the other end connected to the second actuating plate 806. The other end of the operating portion 805 extends to and is connected to the second actuating plate 806. Specifically, a through-hole 8013 is provided at the second end 8012 of the first actuating plate 801. A boss 8061 is provided at a corresponding position on the second actuating plate 806. The boss 8061 has a hole 8063 disposed therein, and a nut is disposed therein. One end of a screw 807 passes through the through-hole 8013 and extends into the hole 8063 to engage with the nut. The first actuating plate 801 and the second actuating plate 806 are connected as a single unit via a pivot shaft 801 and screw 807. A columnar member 808 is sleeved around the outer surface of the screw 807 and positioned between the first actuating plate 801 and the second actuating plate 806 for ease of operation. Preferably, the second actuating plate 806 is also provided with a third slot 813 corresponding to the second slot 811. A second indicator block 814 is provided on the main body 3, which fits into the third slot 813 to indicate the gear position. This allows the gear position of the actuating portion 206 to be visually observed from both sides of the main body 3.

[0207] In this embodiment, the operating assembly 800 can be used to change the gear position of the actuator 206 to achieve a change in the distance between the actuator 206 and the pivot pin 201. When the actuator 206 is in gear position 2061, the distance between the actuator 206 and the pivot pin 201 is greater, and the distance of the push member 8 required for a single push is greater, which is suitable for extruding colloids with lower colloid density. When the actuator 206 is in gear position 2062, the distance between the actuator 206 and the pivot pin 201 is smaller, and the distance of the push member 8 required for a single push is smaller, which is suitable for extruding colloids with higher colloid density. It should be understood that the operating assembly 800 can also be applied to the structure of Example 1, that is, the operating assembly 800 can be connected to the pivot pin 12 in Example 1 to drive the pivot pin 12 to move and achieve gear switching.

[0208] In this embodiment, a pair of actuator plates are provided as operating components, and the user can switch gears by pulling the operating part, which is quick and convenient to operate. In addition, the actuator plates are located on both sides of the main body, which can protect the internal structure. The current gear position can be conveniently displayed through the indicator block.

[0209] The above describes in detail the preferred embodiments of the present invention. It should be understood that numerous modifications and variations based on the concepts of the present invention can be made by those skilled in the art without inventive effort. Therefore, any technical solution that can be derived by a person skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology shall be within the scope of protection defined by the claims.

Claims

1. A glue gun, characterized in that: include: A main body, one end of which forms a receiving portion for receiving the rubber cartridge; a first handle and a second handle, wherein the first handle is connected to the second handle via a pivot pin; one of the first handle and the second handle is configured as a fixed handle, and the other is configured as a movable handle that rotates relative to the fixed handle; the fixed handle is connected to the other end of the body; Wherein, the movable handle is provided with an actuating portion, and the actuating portion is configured to push the pushing member of the glue gun; At least one of the actuating portion and the pivot pin is configured to be positionally adjustable, so that the distance between the actuating portion and the pivot pin is changed to achieve switching between at least two gear positions; The glue gun further includes an operating assembly connected to the actuating portion and configured such that the operating assembly moves under the drive of an external force to drive one of the actuating portion and the pivot pin to move, thereby switching between the at least two gear positions. The operating assembly includes a first actuating plate, a first end portion of the first actuating plate is rotatably connected to the main body via a pivot, and a second end portion of the first actuating plate is provided with an operating portion.

2. The glue gun according to claim 1, wherein: The movable handle is provided with a slide groove, and the slide groove is provided with the at least two gears; the actuating part is configured to slide in the slide groove under the drive of the operating component to switch between the gears.

3. The glue gun according to claim 1, wherein: A first groove is provided on the first actuating plate, one end of the actuating portion is accommodated in the first groove, and the actuating portion is configured to slide along the first groove when the gear is switched.

4. The glue gun according to claim 1, wherein: The first actuating plate is provided with a second groove, the main body is provided with a first indicating block, the first indicating block is located in the second groove, and the first actuating plate is configured such that when the first actuating plate rotates, the second groove slides relative to the first indicating block.

5. The glue gun according to claim 1, wherein: The main body is provided with a guide groove, the first actuating plate has a third end portion, and a guide column is provided at the third end portion. The guide column is located in the guide groove and is configured to slide along the guide groove.

6. The glue gun according to claim 1, wherein: The operating assembly further includes a second actuating plate, which is arranged on a side of the main body opposite to the first actuating plate. The pivot penetrates the main body and is connected to the second actuating plate.

7. The glue gun according to claim 6, wherein: The second actuation plate has a shape consistent with that of the first actuation plate.

8. The glue gun according to claim 6, wherein: The second end portion of the first actuating plate extends to the outside of the main body, one end of the operating portion is connected to the second end portion, and the other end of the operating portion is connected to the second actuating plate.

9. The glue gun according to claim 8, wherein: The operating portion includes a screw, one end of the screw is connected to the first actuating plate, and the other end of the screw is engaged with the second actuating plate. A columnar member is sleeved on the screw, and the columnar member is located between the first actuating plate and the second actuating plate.

10. The glue gun according to claim 6, wherein: The second actuating plate is provided with a third groove, the main body is provided with a second indicating block, the second indicating block is located in the third groove, and the second actuating plate is configured such that when the second actuating plate rotates, the third groove slides relative to the second indicating block.

11. The glue gun according to claim 1, wherein: The movable handle is provided with a slide groove, and the slide groove is provided with the at least two gears. The pivot pin is configured to slide in the slide groove under the drive of the operating component to switch between the gears.

12. The glue gun according to claim 1, wherein The glue gun also includes: A brake member is sleeved on the push rod of the glue gun. A compression spring is provided between the brake member and the main body of the glue gun. The brake member is configured to clamp the push rod under the push of the compression spring, so that the push rod can only move in the direction of colloid outflow.

13. The glue gun according to claim 12, wherein: A limiting groove is provided on the main body, and the limiting groove has a first limiting end and a second limiting end. One end of the brake member is located in the limiting groove, and the brake member is configured to move between the first limiting end and the second limiting end, so that the push rod has an idle stroke from the first limiting end to the second limiting end during the pushing process.

14. The glue gun according to claim 13, wherein: The idle stroke is 3 to 5 mm.

15. A glue gun, characterized in that: include: a trigger assembly comprising a movable handle and a fixed handle connected by a pivot pin; A main body, one end of which forms a receiving portion for receiving the colloid; the other end of the main body is connected to the fixed handle; A push rod, one end of which is provided with a pushing body located in the accommodating portion, and the pushing body is configured to reciprocate with the push rod; the other end of the push rod is sleeved with a pushing piece; an actuating portion, the actuating portion being disposed on the movable handle and configured to push the pushing member; a brake member, sleeved on the push rod, with a compression spring provided between the brake member and the main body, and configured to clamp the push rod under the push of the compression spring, so that the push rod can only move in the direction of the colloid outflow; wherein at least one of the actuating portion and the pivot pin is configured to be positionally adjustable, such that the distance between the actuating portion and the pivot pin is changed to achieve switching between at least two gear positions; as well as an operating assembly connected to the actuating portion and configured to move when driven by an external force to drive one of the actuating portion and the pivot pin to move, thereby switching between the at least two gear positions; The operating assembly includes a first actuating plate, a first end portion of the first actuating plate is rotatably connected to the main body via a pivot, and a second end portion of the first actuating plate is provided with an operating portion.

16. The glue gun of claim 15, wherein: The movable handle has a slide groove, and the slide groove has a first gear position and a second gear position; the actuating portion is configured to slide in the slide groove to switch between the first gear position and the second gear position; Alternatively, the pivot pin is configured to slide in the slide slot to switch between the first gear position and the second gear position.

17. The glue gun of claim 15, wherein: A first groove is provided on the first actuating plate, one end of the actuating portion is accommodated in the first groove, and the actuating portion is configured to slide along the first groove when the gear is switched.

18. The glue gun of claim 15, wherein: The first actuating plate is provided with a second groove, the main body is provided with a first indicating block, the first indicating block is located in the second groove, and the first actuating plate is configured such that when the first actuating plate rotates, the second groove slides relative to the first indicating block.

19. The glue gun of claim 15, wherein: The main body is provided with a guide groove, the first actuating plate has a third end portion, and a guide column is provided at the third end portion. The guide column is located in the guide groove and is configured to slide along the guide groove.

20. The glue gun of claim 15, wherein: The operating assembly further includes a second actuating plate, which is arranged on a side of the main body opposite to the first actuating plate. The pivot penetrates the main body and is connected to the second actuating plate.

21. The glue gun of claim 20, wherein: The second actuation plate has a shape consistent with that of the first actuation plate.

22. The glue gun of claim 20, wherein: The second end portion of the first actuating plate extends to the outside of the main body, one end of the operating portion is connected to the second end portion, and the other end of the operating portion is connected to the second actuating plate.

23. The glue gun of claim 22, wherein: The operating portion includes a screw, one end of the screw is connected to the first actuating plate, and the other end of the screw is engaged with the second actuating plate. A columnar member is sleeved on the screw, and the columnar member is located between the first actuating plate and the second actuating plate.

24. The glue gun of claim 20, wherein: The second actuating plate is provided with a third groove, the main body is provided with a second indicating block, the second indicating block is located in the third groove, and the second actuating plate is configured such that when the second actuating plate rotates, the third groove slides relative to the second indicating block.

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