CN209761968U - Glue overflow prevention hot melting nut - Google Patents
Glue overflow prevention hot melting nut Download PDFInfo
- Publication number
- CN209761968U CN209761968U CN201822187930.9U CN201822187930U CN209761968U CN 209761968 U CN209761968 U CN 209761968U CN 201822187930 U CN201822187930 U CN 201822187930U CN 209761968 U CN209761968 U CN 209761968U
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- glue overflow
- nut
- thread
- overflow prevention
- base body
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Abstract
The utility model relates to a nut. The glue overflow prevention hot melting nut is characterized by comprising a tubular base body, wherein at least two annular bulges are arranged outside the base body, the annular bulges form screw teeth of the nut, a gap is arranged between every two adjacent screw teeth, and the gap is used as a first glue overflow groove; taking the thread positioned at the lowest part as a bottom thread, wherein a distance exists between the lower end surface of the bottom thread and the lower end surface of the base body, and a space between the lower end surface of the bottom thread and the lower end surface of the base body is taken as a second glue overflow groove; the height value of the second glue overflow groove is more than 1.5 times of the height value of the bottom thread. The utility model discloses adjusted the height value ratio of the excessive gluey groove of second and bottom thread, when connecting, the height value of bottom thread is equal to the length value that the biggest shovel was glued in theory, optimizes the back, even produces the sizing material that gets off and receives gravity and impulse influence, and the part is downflow, and the excessive gluey groove of second also has sufficient space to hold the sizing material to make the sizing material remain in excessive gluey groove, can not remain the product surface.
Description
Technical Field
The utility model relates to the field of machinary, concretely relates to nut.
background
The plastic part is a common connection mode in the industry by installing the nut in a hot melting mode. During connection, the nut is heated and preheated by a hot melting machine, and then the nut is hot pressed into the plastic part. However, the problem of bottom glue overflow is common in the existing nuts.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anti-overflow glues hot melt nut to solve above-mentioned technical problem.
The utility model discloses can adopt following technical scheme to realize:
The glue overflow prevention hot melting nut is characterized by comprising a tubular base body, wherein at least two annular bulges are arranged outside the base body, the annular bulges form screw teeth of the nut, a gap is arranged between every two adjacent screw teeth, and the gap is used as a first glue overflow groove;
Taking a thread positioned at the lowest part as a bottom thread, wherein a distance exists between the lower end surface of the bottom thread and the lower end surface of the base body, and a space between the lower end surface of the bottom thread and the lower end surface of the base body is taken as a second glue overflow groove;
The height value of the second glue overflow groove is more than 1.5 times of the height value of the bottom screw thread.
the utility model discloses adjusted the height value ratio of the excessive gluey groove of second and bottom thread, when connecting, the height value of bottom thread is equal to the length value that the biggest shovel was glued in theory, optimizes the back, even produces the sizing material that gets off and receives gravity and impulse influence, and the part is downflow, and the excessive gluey groove of second also has sufficient space to hold the sizing material to make the sizing material remain in excessive gluey groove, can not remain the product surface.
The height value of the second glue overflow groove is preferably 1.5 to 2.0 times of the height value of the bottom thread. On the one hand, the glue material can be remained in the glue overflow groove, the surface of the product can not be remained on the other hand, the majority of the glue overflow groove is connected with the product through glue overflow, and the gap between the nut and the product is reduced.
The height of the bottom screw thread is preferably 2mm +/-0.3 mm, and the height of the second glue overflow groove is preferably 3.5mm +/-0.3 mm.
Preferably, the number of the threads is only two, the lower one is the bottom thread, the upper one is the top thread, and the upper end surface of the top thread is flush with the upper end surface of the base body. So that the upper end surface of the finished product is integrally flat.
Preferably, the thickness of the top thread is not less than the thickness of the bottom thread. So as to avoid a larger gap between the top thread and the product due to the fact that the bottom thread shovels the glue. Further preferably, the thickness of the top thread is greater than the thickness of the bottom thread. So that the nut is tightly connected with the product. Because the first glue overflow groove is also arranged, the glue produced by the top thread can enter the first glue overflow groove. After the glue entering the first glue overflowing groove is cooled, a protruding structure for limiting the outward pulling of the nut can be formed, and the connection strength between the nut and a product is improved.
As a preferred scheme, the outer diameter of the glue overflow prevention hot melting nutInner diameterThe whole height of the glue overflow prevention hot melting nut is 10.0 mm. The plastic part is provided with a matching hole for connecting the glue overflow prevention hot melting nut, and the size of the matching hole diameter isThe unilateral fit clearance is 0.15 mm.
Drawings
FIG. 1 is an assembly view of the present invention in use on a product;
Fig. 2 is a using state diagram of the utility model when used in a product.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1 and 2, the glue overflow preventing hot-melt nut comprises a tubular base body 5, at least two annular protrusions are arranged outside the base body 5, the annular protrusions form threads of the nut, and a gap is arranged between every two adjacent threads and serves as a first glue overflow groove 3; taking the thread positioned at the lowest part as a bottom thread 2, wherein a distance exists between the lower end surface of the bottom thread 2 and the lower end surface of the base body 5, and a space between the lower end surface of the bottom thread 2 and the lower end surface of the base body 5 is taken as a second glue overflow groove 4; the height value of the second glue overflow groove 4 is more than 1.5 times of the height value of the bottom thread 2. The utility model discloses adjusted the height value ratio of the excessive gluey groove of second 4 and bottom screw tooth 2, when connecting, the height value of bottom screw tooth 2 is equal to the length value that the biggest shovel was glued in theory, optimizes the back, even the sizing material that produces gets off receives gravity and impulse influence, and the part is downflow, and the excessive gluey groove of second 4 also has sufficient space to hold the sizing material to make the sizing material remain in excessive gluey groove, can not remain the product surface.
The height value of the second glue overflow groove 4 is preferably between 1.5 times and 2.0 times of the height value of the bottom thread 2. On the one hand, the glue material can be remained in the glue overflow groove, the surface of the product can not be remained on the other hand, the majority of the glue overflow groove is connected with the product through glue overflow, and the gap between the nut and the product is reduced. The height of the bottom thread 2 is preferably 2mm +/-0.3 mm, and the height of the second glue overflow groove 4 is preferably 3.5mm +/-0.3 mm.
Preferably, the number of the threads is only two, the lower one is a bottom thread 2, the upper one is a top thread 1, and the upper end face of the top thread 1 is flush with the upper end face of the base body 5. So that the upper end surface of the finished product is integrally flat. Preferably, the thickness of the top thread 1 is not less than the thickness of the bottom thread 2. So as to avoid a larger gap between the top thread 1 and the product due to the glue shoveling of the bottom thread 2. Further preferably, the thickness of the top thread 1 is greater than the thickness of the bottom thread 2. So that the nut is tightly connected with the product. Because the utility model is also provided with the first glue overflow groove 3, the glue produced by the top thread 1 can enter the first glue overflow groove 3. After the glue entering the first glue overflowing groove 3 is cooled, a convex structure for limiting the outward drawing of the nut can be formed, and the connection strength between the nut and a product is improved. The height of the first glue overflow groove 3 is preferably smaller than the height of the top thread 1. The height value of the first glue overflow groove 3 is preferably less than 1.5 mm. To ensure the contact area of the nut and the product.
The inner diameter of the matrix 5 is consistent up and down, and the outer diameter of the matrix 5 is smaller downwards at the lower part of the second glue overflow groove 4. To form a tapered structure to facilitate insertion of the nut. The lower end face of the bottom screw tooth can be in an arc shape protruding upwards. So as to conveniently shovel the glue, and the arc-shaped structure is also beneficial to the downward movement of the glue which is shoveled. The nut is preferably a metal nut. The metal nut can acquire heat through the hot melting head, and hotter metal nut inserts on one side and melts the product on one side, not only is favorable to reducing the insertion degree of difficulty, still is favorable to reducing the burr, in addition, still can effectively guarantee product strength. The outer surface of the screw thread can be provided with screw threads. To reduce the difficulty of insertion by means of the thread.
preferably, the outer diameter (external contour of thread) of the glue overflow preventing hot-melt nutInner diameterThe whole height of the glue overflow prevention hot melting nut is 10.0 mm. The plastic part is provided with a matching hole for connecting the glue overflow prevention hot melting nut, and the size of the matching hole diameter isThe unilateral fit clearance is 0.15 mm.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The glue overflow prevention hot melting nut is characterized by comprising a tubular base body, wherein at least two annular bulges are arranged outside the base body, the annular bulges form screw teeth of the nut, a gap is arranged between every two adjacent screw teeth, and the gap is used as a first glue overflow groove;
Taking a thread positioned at the lowest part as a bottom thread, wherein a distance exists between the lower end surface of the bottom thread and the lower end surface of the base body, and a space between the lower end surface of the bottom thread and the lower end surface of the base body is taken as a second glue overflow groove;
The height value of the second glue overflow groove is more than 1.5 times of the height value of the bottom screw thread.
2. The glue overflow prevention hot melt nut of claim 1, characterized in that: the height value of the second glue overflow groove is 1.5 to 2.0 times of the height value of the bottom thread.
3. The glue overflow prevention hot melt nut of claim 1, characterized in that: the height of the bottom screw teeth is 2mm +/-0.3 mm, and the height of the second glue overflow groove is 3.5mm +/-0.3 mm.
4. The glue overflow prevention hot melt nut as claimed in claim 1, 2 or 3, wherein: the number of the threads is only two, one positioned below is the bottom thread, the other positioned above is used as the top thread, and the upper end face of the top thread is flush with the upper end face of the base body.
5. The glue overflow prevention hot melt nut of claim 4, characterized in that: the thickness of the top thread is not less than that of the bottom thread.
6. The glue overflow prevention hot melt nut of claim 4, characterized in that: the inner diameter of the base body is consistent up and down, and the outer diameter of the base body is smaller downwards at the lower part of the second glue overflow groove.
7. The glue overflow prevention hot melt nut as claimed in claim 1, 2 or 3, wherein: the glue overflow prevention hot melting nut is a metal nut.
8. The glue overflow prevention hot melt nut as claimed in claim 1, 2 or 3, wherein: the lower end surface of the bottom screw tooth is in an arc shape protruding upwards.
9. The glue overflow prevention hot melt nut as claimed in claim 1, 2 or 3, wherein: and the outer surface of the screw thread is provided with a thread.
10. The glue overflow prevention hot melt nut of claim 1, characterized in that: external diameter of glue overflow prevention hot melting nutInner diameterThe integral height of the glue overflow prevention hot melting nut is 10.0 mm; the plastic part is provided with a matching hole for connecting the glue overflow prevention hot melting nut, and the size of the matching hole diameter isThe unilateral fit clearance is 0.15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822187930.9U CN209761968U (en) | 2018-12-25 | 2018-12-25 | Glue overflow prevention hot melting nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822187930.9U CN209761968U (en) | 2018-12-25 | 2018-12-25 | Glue overflow prevention hot melting nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209761968U true CN209761968U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822187930.9U Active CN209761968U (en) | 2018-12-25 | 2018-12-25 | Glue overflow prevention hot melting nut |
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| Country | Link |
|---|---|
| CN (1) | CN209761968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478838A (en) * | 2021-07-10 | 2021-10-08 | 富诚汽车零部件有限公司 | Car expansion tank welded structure |
-
2018
- 2018-12-25 CN CN201822187930.9U patent/CN209761968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478838A (en) * | 2021-07-10 | 2021-10-08 | 富诚汽车零部件有限公司 | Car expansion tank welded structure |
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