GB2602621A - Fitting tube structure of glue gun - Google Patents
Fitting tube structure of glue gun Download PDFInfo
- Publication number
- GB2602621A GB2602621A GB2019058.3A GB202019058A GB2602621A GB 2602621 A GB2602621 A GB 2602621A GB 202019058 A GB202019058 A GB 202019058A GB 2602621 A GB2602621 A GB 2602621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- fixing tube
- diameter extension
- fixing
- fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003292 glue Substances 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000000717 retained effect Effects 0.000 claims abstract description 4
- 230000004308 accommodation Effects 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00523—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material
- B05C17/00526—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
A fitting tube of a glue gun includes: a conical connector(10; fig. 5) and a fitting assembly 40. The conical connector includes a heater chamber (30; fig. 5); a feeding segment (11; fig. 5 – e.g. for extruding melted glue bar); and an open segment (12; fig. 5) for connecting to fitting assembly. The fitting assembly 40 includes a first fixing tube 41, an O ring 42, a second fixing tube 43, a stop sleeve 44, a locating ring 45, and a coupling tube 46. The first tube has a stepped portion 411. The O ring is retained between the stepped portion 411 and second tube 43. The stop sleeve 44 is fitted on the first tube 41 and has a large-diameter extension 441 and a small-diameter extension 442, the large-diameter extension covering the first tube and fitted using the locating ring 45. The coupling tube 46 is fixed on the small-diameter extension 442. The second tube 43 is made of aluminium or aluminum alloy to have a higher heat resistance than the first fixing tube 41 (e.g. made of hard plastic) to avoid deformation due to thermal expansion, and hence prevent glue leakage.
Description
FITTING TUBE STRUCTURE OF GLUE GUN
FIELD OF THE INVENTION
The present invention relates to a fitting tube structure of a 5 glue gun which is capable of avoiding a leakage of glue and a rupture of the fitting assembly because of thermal expansion and contraction.
BACKGROUND OF THE INVENTION
Referring to FIG. 1, a conventional glue gun contains a conical connection part 10, an accommodation chamber 20 formed in a bottom of the conical connection part 10 and configured to accommodate a heater 30, a feeding segment 11 formed on a front end of the conical connection part 10, and an open segment 12 defined on a rear end of the conical connection part 10 and configured to connect with a fitting assembly 40A. In use, a glue supply bar P is inserted into the fitting assembly 40A from the open segment 12, and the heater 30 melts the glue bar into adhesive glue, then the adhesive glue is extruded out of the feeding segment 11.
However, after the heater 30 heats the glue bar in a temperature of 200 °C, the fitting assembly 40A is soften to cause a leakage of the adhesive glue. In addition, the fitting assembly 40A deforms or ruptures in the temperature of 200 °C.
As shown in FIGS. 2 and 3, an improved fitting assembly 25 40B is provided and contains a first connection sleeve 40B1 and a second connection sleeve 40 B2 which are stacked and fixed on the open segment 12. However, a gap ID produces between the first connection sleeve 40Ba and the second connection sleeve 40B2. In use of the improved fitting assembly 40B, the heater 30 heats the first connection sleeve 40B1 so that the first connection sleeve 40B1 expands, and the first connection sleeve 40131 retracts after cooling down, thus enlarging the gap between the first connection sleeve 40B1 and the second connection sleeve 40B2 and leaking the adhesive glue out of the gap.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
The primary aspect of the present invention is to provide a fitting tube structure of a glue gun which contains the first fixing tube, the second fixing tube, and the stop sleeve fitted together and fixed by the locating ring and the coupling tube so as to avoid a deformation of the first fixing tube because of thermal expansion and contraction, thus enhancing a service life of the first fixing tube.
To obtain above-mentioned aspects, a fitting tube structure of a glue gun provided by the present invention contains: a conical connection part, an accommodation chamber formed in a bottom of the conical connection part and configured to accommodate a heater, a feeding segment formed on a front end of the conical connection part, and an open segment defined on a rear end of the conical connection part and configured to connect with a fitting assembly.
The fitting assembly includes a first fixing tube, an 0 ring, a second fixing tube made of aluminum or aluminum alloy, a stop sleeve, a locating ring, and a coupling tube.
A first end of the first fixing tube is connected with the open segment of the conical connection part, and a second end of the first fixing tube is coupled with the second fixing tube, wherein the first fixing tube has a stepped portion formed on a center thereof.
The 0 ring is retained between the stepped portion of the second fixing tube and the second fixing tube.
The stop sleeve is fitted on an outer wall of the first fixing tube and has a large-diameter extension and a small-diameter extension, and the large-diameter extension covers the first fixing tube and is fitted on an outer wall of the large-diameter extension by using the locating ring.
The coupling tube is fixed on an outer wall of the small-diameter extension The first fixing tube, the second fixing tube, and the stop sleeve are fitted and are fixed by the locating ring and the coupling tube.
Preferably, the resilient retainer is mounted between the first fixing tube and the open segment.
Preferably, the small-diameter extension of the stop sleeve has multiple defining ribs formed thereon so as to increase a contact area of the stop sleeve and the coupling tube.
Preferably, the first fixing tube and the coupling tube are made of hard plastic.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side plan view of a conventional fitting tube structure of a glue gun.
FIG. 2 is a side plan view of a conventional fitting tube 10 structure of another glue gun.
FIG. 3 is a cross sectional view taken along the line A-A of FIG. 2 FIG. 4 is a perspective view showing the exploded components of a fitting tube structure of a glue gun according to a 15 preferred emdboim dnet of the present invention.
FIG. 5 is a side plan view showing the assembly of the fitting tube structure of the glue gun according to the preferred embodiment of the present invention.
FIG. 6 is a cross sectional view showing the assembly of 20 the fitting tube structure of the glue gun according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to FIGS. 4-6, a fitting tube structure of a glue gun according to a preferred emdboimdnet of the present invention comprises: a conical connection part 10 configured to receive a melted glue bar, an accommodation chamber 20 formed in a bottom of the conical connection part 10 and configured to accommodate a heater 30, a feeding segment 11 formed on a front end of the conical connection part 10, and an open segment 12 defined on a rear end of the conical connection part 10 and configured to connect with a fitting assembly 40.
Referring to FIGS. 4-6, the fitting assembly 40 includes a 10 first fixing tube 41, an 0 ring 42, a second fixing tube 43 made of aluminum or aluminum alloy, a stop sleeve 44, a locating ring 45, a coupling tube 46, and a resilient retainer 47.
As shown in FIGS. 4-6, the first fixing tube 41 is made of hard plastic and has a heat dissipation, a first end of the first fixing tube 41 is connected with the open segment 12 of the conical connection part 10, and a second end of the first fixing tube 41 is coupled with the second fixing tube 43, wherein the first fixing tube 41 has a stepped portion 411 formed on a center thereof; the 0 ring 42 is retained between the stepped portion 411 of the second fixing tube 43 and the second fixing tube 43, wherein a heat resistance of the second fixing tube 43 is higher than a heat resistance of the plastic of the first fixing tube 41 so as to avoid a deformation of the fitting assembly 40 because of thermal expansion and contraction, thus enhancing a service life of the first fixing tube 41. Furthermore, the resilient retainer 47 is mounted between the first fixing tube 41 and the open segment 12.
As illustrated in FIGS. 4-6, the stop sleeve 44 is fitted on an outer wall of the first fixing tube 41 and has a large-diameter extension 441 and a small-diameter extension 442, wherein the 5 large-diameter extension 441 covers the first fixing tube 41 and is fitted on an outer wall of the large-diameter extension 441 by using the locating ring 45; the coupling tube 46 is fixed on an outer wall of the small-diameter extension 442 and is made of hard plastic so as to fasten the small-diameter extension 442 of the stop sleeve 44, 10 thus avoiding deformation of the stop sleeve 44.
The first fixing tube 41, the second fixing tube 43, and the stop sleeve 44 are fitted and are fixed by the locating ring 45 and the coupling tube 46 so as to avoid a leakage of glue and a rupture of the fitting assembly 40. The small-diameter extension 442 of the stop sleeve 44 has multiple defining ribs 443 formed thereon so as to increase a contact area of the stop sleeve 44 and the coupling tube 46, thus connecting the stop sleeve 44 and the coupling tube 46 securely.
With reference to FIGS. 4-6, in use, the fitting assembly 40 is connected on the open segment 12 of the conical connection part 10. Preferably, the fitting assembly 40 includes the first fixing tube, the 0 ring, the second fixing tube, the stop sleeve, the locating ring, the coupling tube and the resilient retainer, the first fixing tube and the coupling tube have the heat resistance, and the second fixing tube is made of the aluminum alloy so as to avoid the deformation and the rupture of the fitting assembly because of thermal expansion and contraction While the preferred embodiments of the invention have been set forth for purpose of disclosure, modifications of the disclosed embodiments of the invention and other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
Claims (4)
- WHAT IS CLAIMED IS: I. A fitting tube structure of a glue gun comprising: a conical connection part, an accommodation chamber formed in a bottom of the conical connection part and configured to accommodate a heater, a feeding segment formed on a front end of the conical connection part, and an open segment defined on a rear end of the conical connection part and configured to connect with a fitting assembly; wherein the fitting assembly includes a first fixing tube, an 10 0 ring, a second fixing tube made of aluminum or aluminum alloy, a stop sleeve, a locating ring, and a coupling tube; wherein a first end of the first fixing tube is connected with the open segment of the conical connection part, and a second end of the first fixing tube is coupled with the second fixing tube, wherein the first fixing tube has a stepped portion formed on a center thereof; wherein the 0 ring is retained between the stepped portion of the second fixing tube and the second fixing tube; wherein the stop sleeve is fitted on an outer wall of the first fixing tube and has a large-diameter extension and a small-diameter extension, and the large-diameter extension covers the first fixing tube and is fitted on an outer wall of the large-diameter extension by using the locating ring; wherein the coupling tube is fixed on an outer wall of the 25 small-diameter extension; and wherein the first fixing tube, the second fixing tube, and the stop sleeve are fitted and are fixed by the locating ring and the coupling tube.
- 2. The fitting tube structure of the glue gun as claimed in 5 claim 1, wherein the resilient retainer is mounted between the first fixing tube and the open segment.
- 3. The fitting tube structure of the glue gun as claimed in claim 1, wherein the small-diameter extension of the stop sleeve has multiple defining ribs formed thereon so as to increase a contact 10 area of the stop sleeve and the coupling tube.
- 4. The fitting tube structure of the glue gun as claimed in claim 1, wherein the first fixing tube and the coupling tube are made of hard plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2019058.3A GB2602621B (en) | 2020-12-03 | 2020-12-03 | Fitting tube structure of glue gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2019058.3A GB2602621B (en) | 2020-12-03 | 2020-12-03 | Fitting tube structure of glue gun |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB202019058D0 GB202019058D0 (en) | 2021-01-20 |
| GB2602621A true GB2602621A (en) | 2022-07-13 |
| GB2602621B GB2602621B (en) | 2024-08-07 |
Family
ID=74175090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2019058.3A Active GB2602621B (en) | 2020-12-03 | 2020-12-03 | Fitting tube structure of glue gun |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2602621B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854230B1 (en) * | 1978-12-15 | 1980-03-27 | Hubert Ing Brab | Device for melting and applying thermoplastic adhesive |
| US4664296A (en) * | 1984-01-12 | 1987-05-12 | Minnesota Mining And Manufacturing Company | Thermoplastic dispensing device with manually operated feed magazine |
| US4706852A (en) * | 1985-06-12 | 1987-11-17 | Usm Corporation | Inlet sleeve for hot-melt dispensers |
| US4804110A (en) * | 1986-01-08 | 1989-02-14 | Charles R. Sperry | Apparatus, method and article for applying a melted adhesive |
| US5462206A (en) * | 1994-10-12 | 1995-10-31 | Kwasie; Jon B. | Melting assembly for thermoplastic materials |
-
2020
- 2020-12-03 GB GB2019058.3A patent/GB2602621B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854230B1 (en) * | 1978-12-15 | 1980-03-27 | Hubert Ing Brab | Device for melting and applying thermoplastic adhesive |
| US4664296A (en) * | 1984-01-12 | 1987-05-12 | Minnesota Mining And Manufacturing Company | Thermoplastic dispensing device with manually operated feed magazine |
| US4706852A (en) * | 1985-06-12 | 1987-11-17 | Usm Corporation | Inlet sleeve for hot-melt dispensers |
| US4804110A (en) * | 1986-01-08 | 1989-02-14 | Charles R. Sperry | Apparatus, method and article for applying a melted adhesive |
| US5462206A (en) * | 1994-10-12 | 1995-10-31 | Kwasie; Jon B. | Melting assembly for thermoplastic materials |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202019058D0 (en) | 2021-01-20 |
| GB2602621B (en) | 2024-08-07 |
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