Hot melt adhesive stick convenient to assemble

Abstract

The utility model relates to a convenient-to-assemble hot melt glue stick which is composed of a glue stick body which is arranged along a cylinder extending front and back in the axial direction, a protective shell arranged on the periphery of the glue stick body in a sleeving mode and a push rod which is fixed to the glue stick body and installed in the protective shell in a sliding mode. The glue stick further comprises a front limiting ring located on the front side of the protective shell and a rear limiting ring located on the rear side of the protective shell, a limiting disc is fixedly installed on the rear side of the glue stick body, the diameter of the limiting disc is larger than that of the glue stick body, and the limiting disc is arranged to be a polygonal prism body, a matching groove is formed in the protective shell, and the limiting disc is located in the matching groove and abuts against the inner wall of the protective shell. The front limiting ring and the rear limiting ring abut against the limiting disc, the front limiting ring is detachably connected with the protective shell, and the push rod is detachably connected with the limiting disc. And at the moment, the glue stick body cannot rotate in the protective shell, so that the glue stick body is stably positioned in the protective shell sleeve.

Description

Technical Field

[0001] The utility model relates to a hot melt adhesive stick, in particular to a hot melt adhesive stick which is convenient for assembly. Background Art

[0002] The hot melt adhesive stick is a solid adhesive, and its main components usually include resin, tackifier, wax, antioxidant, etc. It remains solid at room temperature, but when heated to a certain temperature, it will quickly melt into a liquid state. At this time, it has good fluidity. Once it cools down, the hot melt adhesive will quickly solidify and turn back into a solid state, thus achieving the effect of rapid bonding.

[0003] Since the hot melt adhesive stick needs to be heated and melted to achieve adhesion between objects, but in many cases, the end of the hot melt adhesive stick is held by hand, and the head is directly heated by an open flame. When the end of the hot melt adhesive stick is heated, the heat generated may cause harm to the human hand. However, directly throwing away the end of the hot melt adhesive stick will cause waste of resources.

[0004] Chinese Patent No.: CN201320475109.1 discloses a hot melt adhesive stick, which is sleeved with a protective shell on the outer layer of the hot melt adhesive stick, and by pushing the telescopic push rod on the protective shell, the hand will not directly contact the end of the hot melt adhesive stick, thus avoiding harm to the hand when the end of the hot melt adhesive stick is heated. However, at this time, the push rod and the hot melt adhesive stick installed in the protective shell can rotate and shake relative to the protective shell, thereby affecting the stability of the hot melt adhesive stick located in the protective shell. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a hot melt adhesive stick which is convenient for assembly. After the glue stick body is inserted from the front side of the protective shell sleeve and fixed with the push rod, the glue stick body cannot rotate in the protective shell and is stably located in the protective shell.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: It is composed of a glue stick body arranged as a cylinder extending axially in the front and rear directions, a protective shell sleeved on the circumference of the glue stick body, and a push rod fixed to the glue stick body and slidably installed in the protective shell. It also includes a front limiting ring located on the front side of the protective shell and a rear limiting ring located on the rear side. A limiting disk is fixedly installed on the rear side of the glue stick body. The diameter of the limiting disk is larger than that of the glue stick body and is arranged as a multi-sided prism. A matching groove for the front and rear sliding of the limiting disk is arranged in the protective shell. The limiting disk is located in the matching groove and abuts against the inner wall of the protective shell. Both the front limiting ring and the rear limiting ring abut against the limiting disk. The front limiting ring is detachably connected to the protective shell, and the push rod is detachably connected to the limiting disk.

[0007] The present utility model is further configured as: the push rod includes a limit post inserted with a limit disk, and the limit post is in threaded fit with the limit disk.

[0008] The present utility model is further configured as: the rear limit ring protrudes forward with a plurality of installation insertion blocks, and the installation insertion blocks are arranged at intervals along the circumferential direction of the rear limit ring, and each installation insertion block is detachably connected to the limit disk.

[0009] The present utility model is further configured as: each installation insertion block is recessed inward with a fitting slot, and each fitting slot is annularly arranged. The limit disk is provided with installation slots corresponding to each installation insertion block, and the limit disk is provided with fitting insertion blocks in each installation slot.

[0010] The present utility model is further configured as: an installation ring is fixedly installed on the rear side of the front limit ring of the protection housing, and the installation ring is detachably connected to the front limit ring.

[0011] The present utility model is further configured as: the installation ring protrudes forward with a plurality of disassembly and assembly insertion blocks, and each disassembly and assembly insertion block includes an insertion section and a limit section. Each limit section is located on the front side of the corresponding insertion section and is inclined, and the projection of each limit section backward falls on the front limit ring.

[0012] The present utility model is further configured as: each of the installation insertion blocks and the disassembly and assembly insertion blocks is made of a material that is prone to deformation.

[0013] By adopting the above technical solutions: 1. Since the front limit ring is located on the front side of the protective housing and the rear limit ring is located on the rear side of the protective housing, when assembling the glue stick body, the rear side of the glue stick body is inserted through the front opening of the protective housing. After the limit disk of the glue stick body abuts against the rear limit ring, at this time, after the push rod is inserted into the protective housing and detachably connected to the limit disk, the connection between the push rod and the limit disk can be completed. At this time, due to the existence of the rear limit ring, the limit disk cannot move backward beyond the rear limit ring. Then, after the front limit ring is installed on the front side of the protective housing to complete its connection with the protective housing, when a forward force is applied to the push rod to drive the glue stick body to expose from the protective housing and the front limit ring, the limit disk moves in the fitting groove. When the limit disk moves to the foremost side of the fitting groove, the limit disk will abut against the front limit ring. Therefore, the front limit ring and the rear limit ring can limit the movement path of the glue stick body in the protective housing front and back, so that after applying force to the push rod, the glue stick body can stably slide in the protective housing. When the glue stick body is used up, by rotating the push rod, the push rod can be separated from the limit disk, and then the rear limit ring and the protective housing sleeve can be disassembled and separated, and then the limit disk can be taken out from the protective housing forward. After fixing the limit disk to a new glue stick body and inserting it through the front side of the protective housing, after completing the fixation of the limit disk and the push rod, the rear limit ring is installed; 2. Since the limit disk is arranged in a multi-sided prism shape and the circumference of the limit disk located in the protective housing abuts against the inner wall of the protective housing, the limit disk located in the protective housing cannot rotate in the fitting groove. Therefore, when the push rod applies force to the limit disk to drive the glue stick body to move, the glue stick body will not rotate or shake in the protective housing. Thus, applying force to the push rod can drive the glue stick body to stably slide back and forth relative to the protective housing. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 Is a perspective view of the specific embodiment of the present invention;

[0016] Figure 2 Is a sectional view of the specific embodiment of the present invention;

[0017] Figure 3 Is a perspective view of the protective housing in the present invention;

[0018] Figure 4Explosion diagram of the present utility model;

[0019] Figure 5 is Figure 2 the enlarged view of A in

[0020] Figure 6 is Figure 2 the enlarged view of B in

[0021] Figure 7 is Figure 4 the enlarged view of C in

[0022] Figure 8 is Figure 4 the enlarged view of D in

[0023] Figure 9 is Figure 4 the enlarged view of E in

[0024] In the figure: 1 - glue stick body, 11 - limit disk, 111 - installation slot, 1111 - mating insertion block

[0025] 2 - protective housing, 21 - mating groove, 22 - installation ring, 221 - disassembly and assembly insertion block, 2211 - insertion section, 2212 - limit section;

[0026] 3 - push rod, 31 - limit post;

[0027] 4 - front limit ring, 41 - installation groove;

[0028] 5 - rear limit ring, 51 - installation insertion block, 511 - mating slot. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Such as Figures 1-9As shown in the figure, the utility model discloses a hot melt adhesive stick which is convenient to assemble. It is composed of a stick body 1 in the shape of a cylinder with an axial direction extending forward and backward, a protective shell 2 sleeved on the circumferential direction of the stick body 1, and a push rod 3 which is fixed to the stick body 1 by welding, bolts or other means and is slidably installed in the protective shell 2. Therefore, after applying a forward force to the push rod 3, the stick body 1 located in the protective shell 2 can be pushed forward. Then, by heating the part of the stick body 1 exposed outside the protective shell 2 to make it melt, the adhesion between two objects can be completed. After use, by applying a backward force to the push rod 3, the part of the stick body 1 exposed outside the protective shell 2 can be driven backward and retracted into the protective shell 2, so that external dust will not accumulate on the circumferential direction of the stick body 1. Since the stick body 1 is connected to the push rod 3, the situation that the end of the stick body 1 is held by hand during use and the high temperature causes harm to the human hand when the stick body 1 is heated and melted is avoided. It also includes a front limit ring 4 on the front side of the protective shell 2 and a rear limit ring 5 on the rear side. A limit disk 11 is fixedly installed at the rear side of the stick body 1 by bonding or other means. The diameter of the limit disk 11 is larger than that of the stick body 1 and is in the shape of a hexagonal prism. A matching groove 21 for the front and rear sliding of the limit disk 11 is arranged in the protective shell 2. The limit disk 11 is located in the matching groove 21 and abuts against the inner wall of the protective shell 2. Both the front limit ring 4 and the rear limit ring 5 abut against the limit disk 11. The front limit ring 4 is detachably connected to the protective shell 2 by means of a buckle, bolts or other means. The push rod 3 is detachably connected to the limit disk 11 by means of a buckle, bolts or other means. An installation groove 41 for inserting the stick body 1 is arranged on the front limit ring 4, 1.Since the front limit ring 4 is located on the front side of the protective housing 2 and the rear limit ring 5 is located on the rear side of the protective housing 2, when assembling the glue stick body 1, the rear side of the glue stick body 1 is inserted through the front opening of the protective housing 2. After the limit disk 11 of the glue stick body 1 abuts against the rear limit ring 5, the push rod 3 is inserted into the protective housing 2 and detachably connected to the limit disk 11. At this time, the connection between the push rod 3 and the limit disk 11 can be completed, and due to the existence of the rear limit ring 5, the limit disk 11 cannot move backward beyond the rear limit ring 5. Then, after the front limit ring 4 is installed on the front side of the protective housing 2 to complete its connection with the protective housing 2, when a forward force is applied to the push rod 3 to drive the glue stick body 1 to expose from the protective housing and the front limit ring 4, the limit disk 11 moves in the fitting groove 21. When the limit disk 11 moves to the foremost side of the fitting groove 21, the limit disk 11 abuts against the front limit ring 4. Therefore, the front limit ring 4 and the rear limit ring 5 can limit the forward and backward movement path of the glue stick body 1 in the protective housing 2, so that the glue stick body 1 can stably slide in the protective housing 2 when a force is applied to the push rod 3. When the glue stick body 1 is used up, by rotating the push rod 3, the push rod 3 can be separated from the limit disk 11. Then, the rear limit ring 5 is disassembled and separated from the protective housing sleeve, and the limit disk 11 can be taken out forward from the protective housing 2. Then, the limit disk 11 is fixed to a new glue stick body 1 and inserted through the front side of the protective housing 2. After the limit disk 11 and the push rod 3 are fixed, the rear limit ring 5 is installed; 2. Since the limit disk 11 is arranged in a multi-sided prism shape and the circumference of the limit disk 11 located in the protective housing 2 abuts against the inner wall of the protective housing 2, the limit disk 11 located in the protective housing 2 cannot rotate in the fitting groove 21. Therefore, when the push rod 3 applies a force to the limit disk 11 to drive the glue stick body 1 to move, the glue stick body 1 will not rotate or shake in the protective housing 2, so that when a force is applied to the push rod 3, the glue stick body 1 can stably slide back and forth relative to the protective housing 2.

[0031] Preferably, the push rod 3 includes a limit post 31 inserted into the limit disk 11, and the limit post 31 is in threaded cooperation with the limit disk 11. Since the limit post 31 is in threaded cooperation with the limit disk 11, by rotating the limit post 31, the connection between the push rod 3 and the limit disk 11 can be realized. Also, because the limit disk 11 is arranged in a multi-sided prism shape and abuts against the inner wall of the protective housing 2, the limit disk 11 cannot rotate in the fitting groove 21, which further makes the limit post 31 unable to rotate to drive the push rod 3 to separate from the limit disk 11. Therefore, during use, the push rod 3 can be stably located on the limit disk 11.

[0032] In addition, several mounting inserts 51 are protruded forward from the rear limit ring 5, and the mounting inserts 51 are arranged at intervals along the circumferential direction of the rear limit ring 5. Each of the mounting inserts 51 is snap-connected to the limit disk 11. Since the mounting inserts 51 on the rear limit ring 5 will be snap-connected to the limit disk 11, when trying to move the limit disk 11 and the glue stick body 1, the acting force needs to be greater than the acting force to release the snap connection between the mounting insert 51 and the limit disk 11. Without external force, because the mounting inserts 51 and the limit disk 11 are snap-connected, unauthorized personnel will not casually touch the push rod 3 and directly drive the glue stick body 1 to move back and forth relative to the protective housing 2. Thus, the glue stick body 1 can be stably located in the protective housing 2 without external force.

[0033] Preferably, each of the mounting inserts 51 is recessed inwardly with a mating slot 511, and each of the mating slots 511 is annularly arranged. The limit disk 11 is provided with mounting slots 111 corresponding to the mounting inserts 51, and a mating insert 1111 is arranged in each of the mounting slots 111 of the limit disk 11. Since each of the mating slots 511 is an inwardly recessed ring, when it is necessary to drive the limit disk 11 and the glue stick body 1 to move through the push rod 3, the mating insert 1111 of the limit disk 11 located in the mounting slot 111 needs to receive a forward acting force so that the mating insert 1111 is separated from the corresponding mating slot 511. At this time, each of the mounting inserts 51 will be separated from the limit disk 11, and then drive the rear limit ring 5 to be separated from the limit disk 11 so that the limit disk 11 and the glue stick body 1 can move forward, and the glue stick body 1 can be exposed from the protective housing 2 and the front limit ring 4.

[0034] An installation ring 22 is fixedly installed at the rear side of the front limit ring 4 of the protective housing 2 by means of integral molding, welding, etc. The installation ring 22 is detachably connected to the front limit ring 4 by means of snap fasteners, bolts, etc. Since the installation ring 22 is detachably connected to the front limit ring 4, after the front limit ring 4 is removed from the installation ring 22 of the protective housing 2, the abutting state between the limit disk 11 and the front limit ring 4 is released at this time, and then the limit disk 11 can be taken out from the front side of the protective housing 2, so that the glue stick body 1 can be replaced.

[0035] The mounting ring 22 is provided with a plurality of disassembly and assembly plug-in blocks 221 protruding forward, each disassembly and assembly plug-in block 221 includes an insertion section 2211 and a limiting section 2212, each limiting section 2212 is located in front of the corresponding insertion section 2211 and is arranged in an inclined manner, and the rearward projection of each limiting section 2212 falls on the front limiting ring 4. Since the limiting section 2212 of each disassembly and assembly plug-in block 221 is arranged in an inclined manner, the limiting section 2212 can be moved to be located in the corresponding insertion section 221. 1 and the front limiting ring 4 is inserted. At this time, if a backward force is applied to the limiting segment 2212 located in front of the front limiting ring 4, it can counteract the front limiting ring 4, so that the installation ring 22 can be stably connected with the front limiting ring 4 through the disassembly and assembly blocks 221. When it is necessary to separate the installation ring 22 from the front limiting ring 4, a force is applied to the limiting segment 2212 so that it is located in the length extension direction of the corresponding insertion segment 2211 and is separated from the front limiting ring 4 backward.

[0036] Preferably, each of the mounting blocks 51 and the disassembly blocks 221 are made of a material that is easily deformed, such as rubber. Since the mounting blocks 51 and the disassembly blocks 221 are easily deformed, when it is necessary to separate or connect the front limit ring 4 and the mounting ring 22, the limit section 2212 can be more smoothly bent to allow it to be inserted into the front limit ring 4 or removed from the front limit ring 4. Similarly, after the limit plate 11 is installed in the protective shell 2, the part of the mounting block 51 located in front of the mating slot 511 can more smoothly squeeze the mating block 1111 located in the corresponding mounting slot 111, thereby enabling each mounting block 51 to fall into the corresponding mounting slot 111.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot melt glue stick that is easy to assemble, comprising a glue stick body arranged as a cylinder extending axially forward and backward, a protective shell sleeved around the glue stick body, and a push rod fixed to the glue stick body and slidably installed in the protective shell, characterized in that: It also includes a front limit ring located on the front side of the protective shell and a rear limit ring on the rear side. A limit plate is fixedly installed on the rear side of the glue stick body. The diameter of the limit plate is larger than the diameter of the glue stick body and is arranged in a polygonal prism. A matching groove for the limit plate to slide back and forth is arranged in the protective shell. The limit plate is located in the matching groove and abuts against the inner wall of the protective shell. The front limit ring and the rear limit ring are both abutted against the limit plate. The front limit ring is detachably connected to the protective shell, and the push rod is detachably connected to the limit plate.

2. A hot melt adhesive stick that is easy to assemble according to claim 1, characterized in that: The push rod comprises a limiting column inserted into a limiting disk, and the limiting column is threadably matched with the limiting disk.

3. A hot melt adhesive stick that is easy to assemble according to claim 1 or 2, characterized in that: The rear limiting ring is provided with a plurality of installation plug-in blocks protruding forward, and the installation plug-in blocks are arranged at intervals along the circumference of the rear limiting ring, and the installation plug-in blocks are buckled and connected with the limiting plate.

4. The hot melt adhesive stick that is easy to assemble according to claim 3, characterized in that: Each of the installation blocks is recessed inwardly and provided with a matching slot, each matching slot is arranged in a ring shape, the limiting plate is provided with an installation slot corresponding to each installation block, and the limiting plate is provided with a matching block in each installation slot.

5. The hot melt adhesive stick that is easy to assemble according to claim 3, characterized in that: The protective shell is fixedly mounted with a mounting ring on the rear side of the front limiting ring, and the mounting ring is detachably connected to the front limiting ring.

6. The hot melt adhesive stick that is easy to assemble according to claim 5, characterized in that: The mounting ring is provided with a plurality of disassembly and assembly blocks protruding forward, each disassembly and assembly block comprises an insertion section and a limiting section, each limiting section is located in front of the corresponding insertion section and is inclined, and the rearward projection of each limiting section falls on the front limiting ring.

7. The hot melt adhesive stick that is easy to assemble according to claim 5, characterized in that: Each of the installation plug-in blocks and the disassembly plug-in blocks is made of a material that is easily deformed.

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