CN111804535A

CN111804535A - Electric glue gun

Info

Publication number: CN111804535A
Application number: CN202010146979.9A
Authority: CN
Inventors: 付祥青; 陈亮; 郭世彬
Original assignee: Nanjing Deshuo Industrial Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd; Nanjing Deshuo Industrial Co Ltd
Priority date: 2019-04-12
Filing date: 2020-03-05
Publication date: 2020-10-23

Abstract

The invention discloses an electric glue gun, comprising: a body portion extending in a first linear direction, the body portion comprising: the pushing mechanism is used for installing the rubber tube and extruding the rubber body; a prime mover disposed at a rear side of the push-out mechanism and configured to drive the push-out mechanism; a housing formed with an accommodating chamber for accommodating the prime mover and formed with or connected to a handle portion for a user to hold; when the rubber rod is arranged in the rubber tube, the main body part is provided with a first gravity center position along a first straight line direction; when the glue stick is not installed in the glue tube, the main body part is provided with a second gravity center position along the first straight line direction; the handle portion is arranged along a first straight line and between a first center of gravity position and a second center of gravity position. This electronic gluey rifle structural arrangement optimizes, and user operation travelling comfort is higher.

Description

Electric glue gun

Technical Field

The invention relates to an electric glue gun.

Background

The electric glue gun is a tool capable of automatically applying glue or extruding glue, and is widely applied to industries such as architectural decoration, electronic appliances, automobile parts and the like. Compared with a manual glue gun, the electric glue gun in the prior art is high in automation degree and relatively labor-saving. However, the larger power output mechanism and the more complex transmission mechanism occupy larger space, so that the body of the electric glue gun is heavy, and the user experience is poorer when a professional operator operating the electric glue gun operates the large-size and heavy electric glue gun for a long time. In addition, the electric glue gun is held and operated by the handle, so that the fatigue feeling of a user for operating the electric glue gun for a long time is large. How to provide a method for tenderly and effectively reducing fatigue feeling brought by a user in a long-term operation process is a technical problem to be solved urgently at present.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an electric glue gun which can be conveniently held by a user.

In order to achieve the above object, the present invention adopts the following technical solutions:

an electric glue gun comprising: a body portion extending in a first linear direction, the body portion comprising: the pushing mechanism is used for installing the rubber tube and extruding the rubber body; a prime mover disposed at a rear side of the push-out mechanism and configured to drive the push-out mechanism; a housing formed with an accommodating chamber for accommodating the prime mover and formed with or connected to a handle portion for a user to hold; when the rubber rod is arranged in the rubber tube, the main body part is provided with a first gravity center position along a first straight line direction; when the glue stick is not installed in the glue tube, the main body part is provided with a second gravity center position along the first straight line direction; the handle portion is arranged along a first straight line and between a first center of gravity position and a second center of gravity position.

Further, the grip portion is disposed in the range of 5mm behind the second center of gravity position in the first straight direction.

Further, the second center of gravity is located a distance L1 from the center line of the handle portion; the length of the first gravity center position from the rear side of the second gravity center position is L2, and L2 is L1 or more.

Further, the handle part also comprises a trigger used for controlling the output power of the electric glue gun, and the trigger is close to the main body part and is arranged between the connecting positions of the main body part and the handle part.

Further, the ejection mechanism further comprises a transmission mechanism connected to the prime mover; the transmission mechanism comprises a driving wheel connected to the driving shaft and a driven wheel connected to the output shaft; the driven wheel and the output shaft form a transmission relation through the asymmetric bayonet.

Furthermore, the output shaft is connected with or formed with a transmission gear matched with the bayonet, and the bayonet and the transmission gear have a unique corresponding relation.

Furthermore, the bayonets and the transmission teeth are arranged in groups, and the number of the groups of the bayonets is larger than or equal to that of the transmission teeth.

Further, the hose is formed with a striped groove around the first linear direction.

Furthermore, the rubber tube is also provided with a thread structure for connection.

Further, the pushing mechanism comprises a screw rod capable of sliding in the front-back direction; the electric glue gun is also provided with a locking mechanism capable of locking the screw rod to slide; when the locking mechanism is in a locking state, the screw rod can only move forwards under the driving of the prime motor; when the locking mechanism is in an unlocking state, the screw rod can freely slide in the front-back direction.

The invention has the advantages that: through setting up handle portion between first focus position and second focus position for electronic gluey rifle's stability is higher, and the operator of being more convenient for grips, and is more laborsaving under operating condition simultaneously.

Drawings

FIG. 1 is a perspective view of an electric glue gun in a state of mounting a glue bottle;

FIG. 2 is a perspective view of the electric glue gun of FIG. 1 without the installed glue bottle;

FIG. 3 is a plan view of the electric glue gun of FIG. 2;

FIG. 4 is a partial cross-sectional view of the electric glue gun of FIG. 2;

FIG. 5 is a perspective view of a locking mechanism of the electric glue gun of FIG. 2;

FIG. 6 is an enlarged fragmentary view of the electric glue gun of FIG. 5 at the locking mechanism C;

FIG. 7 is an enlarged view of a portion of the electric glue gun of FIG. 4 at A;

FIG. 8 is an enlarged view of a portion of the electric glue gun of FIG. 4 at B;

fig. 9 is a plan view of an electric glue gun in a second embodiment;

FIG. 10 is an enlarged partial view of the electric glue gun of FIG. 9 at D;

fig. 11 is a perspective view of a transmission structure of the electric glue gun in the second embodiment;

FIG. 12 is an exploded view of the drive arrangement of the electric glue gun of FIG. 11;

FIG. 13 is a plan view of the driven wheel of the electric glue gun of FIG. 11;

FIG. 14 is a perspective view of the electric glue gun of FIG. 9 with the front cover of the glue tube removed;

fig. 15 is a partial enlarged view of the electric glue gun of fig. 14 at E.

Detailed Description

The electric glue gun 100 shown in fig. 1 to 4 mainly includes: a power source 10, a prime mover 11, a housing 12, a transmission 13, and an ejector mechanism 14.

The housing 12 has a first accommodating chamber 121 formed therein, the prime mover 11 and the transmission 13 are disposed in the first accommodating chamber 121 of the housing 12, and the housing 12 further has a grip 122 for an operator to grip. The prime mover 11 includes a prime mover 11 shaft for driving the output shaft to oscillate about the central axis. A transmission 13 is provided between the shaft of the prime mover 11 and the output shaft for changing the rate of rotation of the output of the prime mover 11 while transmitting rotation to the output shaft. For the tool of the electric glue gun 100, the specific structure of the speed changing device 13 is well known in the art, and will not be described in detail.

The push-out mechanism 14 includes: a second accommodating chamber 141, a push rod 142, a transmission mechanism 143 and a locking mechanism 144. The transmission mechanism 143 is connected to an output shaft, and the output shaft is connected to the pushing mechanism 14, and is used for driving the push rod 142 to slide along the first linear direction 101, so as to extrude the colloid. The transmission mechanism 143 forms or is connected with a rotating member of the push rod 142, the output shaft drives the rotating member of the push rod 142 to rotate, and the push rod 142 passes through the rotating member of the push rod 142 and is driven along with the rotation of the rotating member of the push rod 142. For clearly explaining the technical scheme of the invention, the following components shown in FIG. 4 are also defined: a front side and a back side. The second accommodating cavity 141 is used for installing and fixing the glue bottle 15, and glue is filled in the glue bottle 15. When the push rod 142 slides to the bottom of the glue bottle 15 and generates a pressing force, the glue is squeezed out from the glue bottle 15.

As shown in fig. 5 to 6, the locking mechanism 144 is connected between the push rod 142 and the transmission mechanism 143, and when the locking mechanism is locked, the push rod 142 can only move forward under the driving of the transmission mechanism 143; when the locking structure is unlocked, the push rod 142 can slide freely in the forward and backward directions. The setting of locking structure is convenient for the user and easily changes gluey bottle 15, increases the continuity of work. In order to make the acting force uniform and continuous when the push rod 142 presses the glue bottle 15, a head 142a is further disposed at the front side of the push rod 142, and the head 142a may be a disk connected to or formed at one end of the push rod 142, or may be another shape or structure for facilitating pressing of the glue bottle 15.

In this embodiment, the push rod 142 is specifically a screw rod with an external thread, the screw rod is further formed with a flat position for preventing the screw rod from rotating in the sliding process, that is, the external thread on the screw rod is discontinuous, and a section of smooth plane exists on the screw rod body along the first linear direction 101, and the plane blocks the continuous structure of the external thread, so that the screw rod only slides and cannot rotate when being driven by the rotating member of the push rod 142.

The electric glue gun 100 has a speed governing mode. In the speed-adjusting mode, the user can adjust the output power of the electric glue gun 100 as required. As shown in fig. 4, the electric glue gun 100 is formed with or connected to a speed adjusting device for adjusting the rate of glue extrusion. In the present embodiment, the speed adjusting device includes: trigger 16, speed governing switch 17. The trigger 16 is mounted to one side of the handle 122 and is free to rotate about an axis of rotation within the range of angles between the ejector mechanism 14 and the handle 122.

Specifically, the trigger 16 includes: a grip portion 161 and a connecting portion 162. Wherein, the holding part 161 can be held by a user to start the electric glue gun 100; the connecting portion 162 forms a connecting hole 162a, and the connecting hole 162a is used to rotatably connect the trigger 16 to the rotating shaft. As shown in fig. 7, the connecting portion 162 is further connected or formed with a first adjusting portion 162b, and a speed adjusting switch 17 is further formed or connected at a position of the electric glue gun 100 close to the first adjusting portion 162 b. The first adjusting portion 162b is a segment of arc, and the arc takes the axis of the connecting shaft as the center of a circle. The speed-adjusting switch 17 is a rotary switch, and the user can control the output power of the electric glue gun 100 by adjusting the rotation angle of the rotary switch. The rotary switch is provided with a second adjusting part 171, the second adjusting part 171 is a circle of teeth formed around the outer surface of the rotary switch, a plurality of teeth are uniformly distributed on the first adjusting part 162b and are meshed with the outer teeth on the rotary switch, in the process that the user operates the trigger 16 to rotate along the first direction, the first adjusting part 162b drives the rotary switch to rotate along the first direction, the larger the rotating angle of the rotary switch is, the larger the output power of the electric glue gun 100 is, and the faster the glue is extruded; the output power of the electric glue gun 100 is maximized when the trigger 16 is rotated to the extreme position in the first direction, it being understood that the rotation angle of the trigger 16 is linear with the output power of the electric glue gun 100, i.e., the greater the rotation angle of the trigger 16, the greater the output power of the electric glue gun 100. In the present embodiment, when the angle between the trigger 16 and the grip 122 is 10 ° or more and 50 ° or less, comfortable operation by the user can be achieved. Preferably, the angle between the trigger 16 and the handle 122 is 45 °, which not only can achieve the comfort of the user, but also can achieve the purpose that the trigger 16 can adjust the output power of the electric glue gun 100 at a larger angle. It will be appreciated that the angle between the trigger 16 and the handle 122 may be set to other values, and is not limited thereto.

The electric glue gun 100 also has a constant speed mode, and when the electric glue gun 100 is in the constant speed mode, the user can operate the trigger 16 to cause the electric glue gun 100 to output a predetermined, constant power. Specifically, the electric glue gun 100 is provided with a memory chip 18 having a memory function, as shown in fig. 7, the memory chip 18 is electrically connected to the speed regulating switch 17, and the memory chip 18 is also connected to a memory switch 181. When the user operates the trigger 16 to continue operation and needs to continue operation at a certain fixed output power, the memory switch 181 can be activated when the electric glue gun 100 is at that output power. At this time, the memory chip 18 can obtain the output signal of the electric glue gun 100 at the output power, and can control the output power of the electric glue gun 100 according to the signal. When the user starts the electric glue gun 100 again for operation, the electric glue gun 100 can directly enter the preset output power of the memory chip 18 and output at a constant speed only by touching the trigger 16. At this time, the speed regulation function of the trigger 16 is disabled, and when the user needs to enter the speed regulation mode again, the electric glue gun 100 automatically enters the speed regulation mode only by operating the memory switch 181 again.

As shown in fig. 8, the electric glue gun 100 further forms or is connected with a reaction part 163 for the user to sense the output power. In this embodiment, the reaction portion 163 is an elastic member 163a connected to the handle 122 and the trigger 16. Specifically, the handle 122 forms or is connected with a protrusion for the elastic member 163a to be sleeved on, and the holding portion 161 of the trigger 16 forms a receiving groove for the elastic member 163a to be inserted into. When the elastic member 163a is assembled between the trigger 16 and the handle 122, it has a pre-load force that can make the trigger 16 have a fixed angle with respect to the handle 122. It will be appreciated that for a coil spring, the greater the deformation of the spring, the greater the reaction force experienced by the user, as the force acting on the spring is greater. In the process that the user operates the trigger 16 to rotate and approach the handle 122, the user needs to overcome the elastic force of the elastic member 163a to do work, and the user can judge the rotation angle of the trigger 16 according to the reaction force of the elastic member 163a, so that the output power of the electric glue gun 100 can be reasonably controlled according to the self-feeling. It is understood that the reaction part 163 is not limited to the above-mentioned implementation forms, and any reaction force that enables the user to sense the output power of the electric glue gun 100 falls within the protection scope of the present invention.

In the present embodiment, a control mechanism for controlling the upper limit of the output power of the electric glue gun 100 is further provided, the control mechanism is provided with a dial button 19, and the output power gear of the electric glue gun 100 is adjusted and controlled by adjusting the dial button 19. It can be understood that the dial 19 can be provided with a plurality of gears, and the variable speed adjustment of the electric glue gun 100 under the plurality of gears can be realized.

To further reduce the size of the entire machine, the prime mover 11 in the present embodiment is provided as a brushless motor. In the front-rear direction, the brushless motor greatly reduces the size of the electric glue gun 100, and meanwhile, the screw rod penetrates through the transmission mechanism 143 to greatly reduce the structural complexity of the transmission mechanism 143, so that the space position occupied by the transmission mechanism 143 is further reduced, the overall size of the electric glue gun 100 is optimized on the whole, the whole electric glue gun 100 is deviated to lightness, the long-term operation of a user is facilitated, and the fatigue of the long-term operation of the user is reduced.

Fig. 9 shows the electric glue gun 200 in a second embodiment, the main body portion 21 of the electric glue gun 200 extending substantially in a first linear direction 201. The prime mover, the speed change mechanism and the push-out mechanism are arranged in sequence from back to front along the first straight line, and it can be understood that, in terms of weight ratio, the weight of the prime mover and the speed change mechanism is heavier, so that the center of gravity of the main body part 21 of the electric glue gun 200 is located backward, and when the glue stick is mounted on the electric glue gun 200, the center of gravity of the electric glue gun 200 is located forward due to the increased weight of the front end thereof, so that the electric glue gun has a first center of gravity position 202; when the electric glue gun 200 is not fitted with a glue stick, the weight of the main body portion 21 is rearward, and the center of gravity thereof is rearward, thereby providing a second center of gravity position 203. The second center of gravity position 203 is located aft of the first center of gravity. After the main body 21 of the electric glue gun 200 is connected to or forms the handle 22, since the handle 22 bears the weight of the entire main body 21, the user operates the entire electric glue gun 200 only by holding the handle 22, and thus, in order to avoid fatigue feeling due to long-term operation of the electric glue gun 200, the handle 22 needs to be set at the position of the center of gravity or a position close to the center of gravity. It can be understood that when the handle portion 22 is disposed at the rear end of the main body portion 21 and the electric glue gun 200 is equipped with a glue stick, the center of gravity is located at the front end of the handle portion 22, so that the user needs to hold the electric glue gun 200 while applying a force against the sinking of the front end of the electric glue gun 200, which mainly acts on the user's wrist, during the operation of the electric glue gun 200, and the fatigue feeling of the user may be increased during long-term operation. When the handle 22 is disposed at the front end of the main body 21 and the glue stick is installed on the electric glue gun 200, the center of gravity is located at the rear end of the handle 22, and thus, when the user operates the electric glue gun 200, the user needs to apply a force to overcome the upward tilting of the front end of the electric glue gun 200, the force mainly acts on the wrist of the user, and the feeling of fatigue of the user is increased by dark shadow during long-term operation. Preferably, the handle portion 22 is disposed 5mm behind the second center of gravity position 203. The distance from the second center of gravity position 203 to the center straight line 204 of the grip portion 22 is defined as L1, and L1 is 5mm or less. More preferably, the grip portion 22 is disposed between the first center position and the second center position 203, so that the user can operate the electric glue gun 200 with ease, and the fatigue feeling of the long-term operation is remarkably reduced because the center of gravity of the entire electric glue gun 200 is closer to the grip portion 22. In fact, the user can operate the electric glue gun 200 with ease in the range between the first center position 203 and the second center position 203 and from the rear side L1 of the second center position 203. Here, the length of the first barycentric position 202 from the rear side of the second barycentric position 203 is defined as L2, and it is apparent that L2 is L1 or more.

As shown in fig. 10, the trigger 221 is disposed adjacent to the body portion 21 of the electric glue gun 200 in a direction perpendicular to the first linear direction 201 and parallel to the central line 204 of the grip portion 22. In fact, in the present embodiment, the trigger 221 is provided on a rotation shaft (not shown) located at a portion where the body portion 21 and the grip portion 22 are connected. It can be understood that the user can always hold the handle 22 and control the output power of the electric glue gun 200 by holding the trigger 221 during the operation of the electric glue gun 200, and by arranging the trigger 221 at a position closer to the main body 21, the user can hold the trigger 221 with a hand closer to the main body 21 of the electric glue gun 200, so that the electric glue gun has strong operability and better experience. In fact, for the electric glue gun 200 including the handle portion 22, the center of gravity is located at a position close to the joint of the handle portion 22 and the main body portion 21, and by disposing the trigger 221 at a position close to the main body portion 21, when the user holds the electric glue gun 200, the hand is closer to the center of gravity of the whole electric glue gun 200, so that the electric glue gun 200 is more convenient to operate and comfortable. As shown in fig. 11 to 13, the transmission mechanism 23 of the electric glue gun 200 includes a driving wheel 231 and a driven wheel 232, wherein the driving wheel 231 is connected to the driving shaft 233, and the driven wheel 232 drives the output shaft 234 to rotate under the driving of the driving wheel 231. In the present embodiment, the output shaft 234 is formed or connected with a transmission tooth 234a, the transmission tooth 234a is distributed around the circumference of the output shaft 234, and the driven wheel 232 is formed with a bayonet 232a into which the transmission tooth 234a is inserted. In the present embodiment, the bayonets 232a of the driven pulley 232 are distributed around the circumferential direction of the driven pulley 232. Specifically, bayonet 232a is of an asymmetric structure, i.e., each pair of bayonets 232a has different sizes, and it can be understood that transmission tooth 234a is also of an asymmetric structure and has a unique corresponding relationship with bayonet 232 a. In fact, the bayonet 232a and the drive teeth 234a may be arranged in pairs or groups, with each pair or group having a unique mating relationship. Thus, when the output shaft 234 is assembled to the driven wheel 232, due to the unique corresponding relationship between the bayonet 232a and the transmission teeth 234a, in the process of transferring, on one hand, the output shaft 234 and the driven wheel 232 cannot be mistakenly assembled, and on the other hand, the alignment is also convenient.

As shown in fig. 14 to 15, in the long barrel type electric glue gun 200, in order to reduce the overall weight of the electric glue gun 200, particularly the weight of the hose 24 portion, and thereby reduce the fatigue feeling of the user, the present embodiment further provides a light hose 24, where the hose 24 is used to accommodate a long glue stick. Specifically, the rubber tube 24 is a hollow cylinder formed around the first straight line, and is barrel-shaped, with two open ends, one end detachably connected to the pushing-out mechanism, and the other end used for filling the rubber rod. The pipe wall can reduce the thickness of whole pipe wall through setting up the stripe groove 241 structure on the one hand, and on the other hand can also strengthen the intensity of pipe wall self for different rubber tubes 24 are under the prerequisite of same length and same radius, and the rubber tube 24 weight that has set up stripe groove 241 is lighter, and intensity also can satisfy the demand. In addition, through setting up stripe groove 241, can also increase the surperficial frictional force of rubber tube 24, it is more convenient and comfortable when user's operation rubber tube 24, can not hold because of the rubber tube 24 surface skids. In the connection mode, the rubber tube 24 is connected with the thread 242 of the to-be-connected part by arranging the thread 242 on the tube wall of the rubber tube 24, so that the connecting part for connecting the rubber tube 24 is avoided, and the weight of the rubber tube 24 is further reduced. In fact, it can be appreciated that by reducing the weight of the hose 24, the overall size of the power gun 200 is optimized, with a center of gravity of the overall unit further back, and with greater user maneuverability and comfort.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. An electric glue gun comprising: a body portion extending in a first linear direction, the body portion comprising:

the pushing mechanism is used for installing the rubber tube and extruding the rubber body;

a prime mover provided at a rear side of the push-out mechanism and driving the push-out mechanism;

a housing formed with an accommodating chamber for accommodating the prime mover and formed with or connected to a handle portion for a user to hold;

the method is characterized in that:

when a glue stick is arranged in the glue tube, the main body part is provided with a first gravity center position along the first straight line direction;

when a glue stick is not installed in the glue tube, the main body part is provided with a second gravity center position along the first straight line direction;

the handle portion is disposed along the first linear direction between the first center of gravity position and the second center of gravity position.

2. The electric glue gun of claim 1, wherein:

the handle portion is disposed within a range of 5mm behind the second center of gravity position in the first linear direction.

3. The electric glue gun of claim 1, wherein:

the second center of gravity is at a distance L1 from the center line of the handle portion; the length of the first gravity center position from the rear side of the second gravity center position is L2, and L2 is L1 or more.

4. The electric glue gun of claim 1, wherein:

the handle portion further comprises a trigger for controlling the output power of the electric glue gun, and the trigger is close to the main body portion and arranged between the connecting positions of the main body portion and the handle portion.

5. The electric glue gun of claim 1, wherein:

the ejection mechanism further comprises a transmission mechanism connected to the prime mover;

the transmission mechanism comprises a driving wheel connected to the driving shaft and a driven wheel connected to the output shaft;

the driven wheel and the output shaft form a transmission relation through the asymmetric bayonet.

6. The electric glue gun of claim 5, wherein:

the output shaft is connected with or formed with a transmission gear matched with the bayonet, and the bayonet and the transmission gear have a unique corresponding relation.

7. The electric glue gun of claim 6, wherein:

the bayonet socket with the driving gear sets up in groups, the group number more than or equal to of bayonet socket the group number of driving gear.

8. The electric glue gun of claim 1, wherein:

the rubber tube is provided with a stripe groove around the first straight line direction.

9. The electric glue gun of claim 1, wherein:

the rubber tube is also provided with a thread structure for connection.

10. The electric glue gun of claim 1, wherein:

the push-out mechanism comprises a screw rod capable of sliding along the front-back direction;

the electric glue gun is also provided with a locking mechanism capable of locking the sliding of the screw rod; when the locking mechanism is in a locking state, the screw rod can only move forwards under the driving of the prime mover; when the locking mechanism is in an unlocked state, the screw rod can freely slide in the front-back direction.