CN202073882U - Self-tapping screw connecting device for stamping part - Google Patents
Self-tapping screw connecting device for stamping part Download PDFInfo
- Publication number
- CN202073882U CN202073882U CN 201120138115 CN201120138115U CN202073882U CN 202073882 U CN202073882 U CN 202073882U CN 201120138115 CN201120138115 CN 201120138115 CN 201120138115 U CN201120138115 U CN 201120138115U CN 202073882 U CN202073882 U CN 202073882U
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- stamping part
- tapping screw
- connection set
- screw
- hole pipe
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Abstract
The utility model relates to a self-tapping screw connecting device for a stamping part, which is characterized in that the self-tapping screw connecting device comprises the stamping part (1), a connecting piece (2) to be connected and a self-tapping screw (3), wherein the stamping part (1) is platy and is provided with a hole pipe (7) which is protruded out of the back of the stamping part, the connecting piece (2) to be connected is connected with the stamping part; and the self-tapping screw (3) is screwed into the inner wall of the hole pipe (7) in the self-tapping process for connecting the connecting piece (2) to be connected and the stamping part (1). By screwing the self-tapping screw into the hole pipe of the stamping part, the need of welding internal thread parts such as a nut and the like on the stamping part is eliminated and the number of parts is greatly reduced; and by reducing welding working procedures, the connecting cost is greatly reduced.
Description
Technical field
The utility model relates generally to the interconnection technique between the parts, relates in particular to a kind of tapping screw connection set that is used for stamping part.
Background technique
In the manufacture process of mechanical device and electronic device; usually can relate to the connection between each parts; especially mechanical connection; for example need stamping part is connected with miscellaneous part, and being connected between miscellaneous part and the stamping part use conventional screw bolt and nut to carry out usually in the prior art.Especially under hand can't the situation near the stamping part back side, for for convenience detach, also need the connection of miscellaneous part is carried out at nut or the inner thread piece predetermined fixed back side to stamping part then in the front of stamping part, in order to avoid nut or inner thread piece drop in the connection procedure.
Fig. 1 shows the connection diagram between a kind of representational stamping part of the prior art and the miscellaneous part (or being called to be connected), wherein be generally tabular stamping part 1 and be provided with through hole 6, be connected with nut or other inner thread pieces 5 at described through hole 6 places on the back side of stamping part 1, this nut or inner thread piece 5 are connected as a single entity by the mode and the stamping part 1 of welding.Placing the one side opposite with nut place face of stamping part 1 with to be connected 2 then is on the front, attachment hole on to be connected 2 is alignd with the attachment hole of nut or inner thread piece 5, use screw 4 then, for example Chang Gui socket head screw or outer-hexagonal screw, pass to be connected 2 attachment hole, be screwed in the internal thread of nut or inner thread piece 5, thereby to be connected 2 and stamping part 1 are fastened to together.
Obviously, said process needs a welding step that nut or inner thread piece 5 are welded on the stamping part 1 in advance, in case nut drops in conjunction with the process of screw.And, if when the positive surface evenness to pressed plate has requirement and nut welding, expose the outer surface of pressed plate because of carelessness, may also need extra polishing or polishing step to make final stamping part connect surfacing.This extra welding or presumable polishing grinding step will inevitably cause increasing extra operation and cost, and this is not expect in the connection procedure.
Therefore, press for and develop a kind of usefulness and still less process or connect operation and come convenient and stamping part connection set that directly between miscellaneous part and stamping part, be connected.
The model utility content
The technical problems to be solved in the utility model is to overcome as mentioned above existing defective in the prior art of stamping part connection area just, and a kind of stamping part connection set that need not extra soldered process or other course of working is provided.
For this reason, the technical solution adopted in the utility model is to provide a kind of stamping part connection set, it is characterized in that, comprising: stamping part, and it is tabular, and has from the stamping part hole pipe outstanding towards the back side; Will link to each other with stamping part to be connected; And be screwed to by the self tapping process in the inwall of hole pipe to be connected tapping screw that links to each other with stamping part.
Preferably, described hole pipe extends perpendicular to plane, stamping part place, with the processing that makes things convenient for the hole pipe and the tapping screw application of force during tapping on the inner tube wall of hole.
Preferably, described to be connected have for tapping screw pass and with the Centered attachment hole of hole pipe.
Preferably, the diameter of the attachment hole on described to be connected is greater than the diameter of hole pipe and less than the diameter of the screw head of tapping screw.
Preferably, the transition portion of the described stamping part of described Kong Guanyu has the fillet of being convenient to the initial tapping of tapping screw, plays the effect to the tapping screw channeling conduct, carries out effective tapping.
Preferably, described to be connected is plate-like piece.
Preferably, described tapping screw has screw head and bar part, and the external diameter of described bar part diminishes from the screw head to the taper gradually.
Preferably, the internal diameter of described hole pipe is from diminishing gradually to top end with the stamping part connecting place, and the inclination of the periphery of described bar part is identical with the inclination of described hole inner tube wall, and the purpose of being arranged to tilt is to make tapping screw laborsaving screwing togather of Kong Guanzhong.
Preferably, described tapping screw has screw head and bar part, and the length of described bar part is equal to or greater than extended length on the described Kong Guancong stamping part.Thereby be threaded or overlay segment provides stronger engaging force by long, prevent that to be connected is separated because of the not enough accident of engaging force with stamping part.
Preferably, the screw head of described tapping screw is socket head screw head or outer-hexagonal screw head.
By above-mentioned stamping part connection set of the present utility model, make to need not to use to be connected with stamping part nut welded together, directly screw togather with tapping screw and stamping part itself, just can realize firm joint.Because of having eliminated the needs of the welding process that nut and stamping part is welded together, thereby make joint efficiency improve greatly, and make the manufacture cost of relevant with it mechanical parts or electronic device also reduce greatly.
Description of drawings
Below in conjunction with the accompanying drawing that constitutes the utility model specification part preferred embodiment of the present utility model is described in detail, among the figure:
Fig. 1 is the schematic representation of the stamping part connection set of prior art.
Fig. 2 is the schematic representation of stamping part connection set of the present utility model.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, accompanying drawing only for exemplary and be not to draw in proportion, represent with identical reference character among the figure by same or analogous element.Preferred embodiment shown in the accompanying drawing only is in order to describe the utility model better, not constitute restriction of the present utility model, and scope of the present utility model is limited by the scope of appended claim.
Figure 2 shows that the schematic representation of stamping part connection set of the present utility model, as shown in the figure, stamping part connection set of the present utility model comprises: stamping part 1, will link to each other with this stamping part to be connected 2 and be used to make this stamping part 1 and to be connected 2 tapping screw that links to each other 3.
This stamping part 1 is preferably tabular stamping part, can be applicable to many machineries or electronics manufacture field, for example is used for the manufacturing of PCB.This stamping part 1 is wanting connected position to form perforated pipe 7, and described hole pipe 7 preferably forms by stamping process, and comes out from the back side projection of stamping part 1 perpendicular to plane, stamping part 1 place.
Because of hole pipe 7 is to be stamped to form integratedly from stamping part 1, the thickness of its tube wall equals the thickness of stamping part 1, and perhaps the thickness of its tube wall is slightly smaller than the thickness of stamping part 1 itself.The thickness of the tube wall of hole pipe 7 can be uniformly, also can be uneven.
The internal diameter of hole pipe 7 is made along with diminishing gradually away from the bearing of trend of stamping part 1, that is to say that in section as shown in Figure 2, the hole bore is from diminishing gradually towards top end with the stamping part connecting place.This of hole bore size is provided with and is beneficial to tapping screw 3 advancing in the inner tube wall of hole.
Described to be connected 2 is arranged on stamping part 1 and surface hole Guan Suolian surface opposite, promptly on the front of stamping part 1.This to be connected 2 has attachment hole 8, the center-aligned of the center of described attachment hole 8 and described hole pipe 7, and the internal diameter of described attachment hole 8 is greater than the maximum inner diameter of hole pipe 7.
Tapping screw 3 passes the attachment hole 8 on this to be connected 2, by the operator on screw head the application of force to the power that presses down and rotate, make tapping screw 3 in hole pipe 7, produce " self tapping effect ", thereby tapping screw is screwed in the inwall of hole pipe 7 of stamping part 1.
Have the outside thread that tapping is used on the outer surface of the bar part 9 of tapping screw 3, the diameter of bar part 9 diminishes to the screw taper gradually from screw head, that is, in sectional drawing shown in Figure 2, this bar part 9 begins to be tapered downwards from screw head.The awl gradient of the outer wall of bar part 9 is identical with the awl gradient of the inwall of hole pipe 7, and, more particularly, the diameter of the inwall of hole pipe 7 should be equal to or slightly greater than the externally threaded path of bar part 9, but less than this externally threaded big footpath, so that the drive fit of bar part 9 in the inner tube wall of hole of tapping screw 3.
The axis of described hole pipe 7 extends perpendicular to the plane of stamping part 1 substantially, and the joint of the inwall of hole pipe 7 and stamping part 1 is by sphering so that guiding tapping screw 3 advance and tapping screw 3 is managed initial tapping in 7 inwalls in the hole.
Though described to be connected 2 shown in Figure 2 be tabular, also can be other shapes, and can have different thickness, as long as it has for the fixing part of screw head of tapping screw 3.For example, to be connected 2 can be bulk, and it has counterbore, and the diapire of counterbore is sandwiched between the screw head and stamping part 1 of tapping screw 3, links to each other with the hole pipe 7 of stamping part 1 by tapping screw 3.
According to be connected 2 difformity and thickness, tapping screw 3 can have the socket head screw head, also can have the outer-hexagonal screw head, can also be the screw head of other shapes and type according to the needs of actual use occasion.
Tapping screw 3 can be various rigid materials, and metallic material for example is such as carbon steel, stainless steel etc.The hardness of tapping screw 3 should be greater than the hardness of the hole of described stamping part 1 pipe 7, so that the interior wall energy of hole pipe 7 is out of shape along with externally threaded the advancing of tapping screw or by its cutting.
Can may carry out cure process to the male thread portion of the bar part 9 of tapping screw 3, this cure process can be undertaken by plating technic such as chemical plating or vacuum plating etc., for example can be coated with coatings such as chromium, nickel, zinc at the outer surface of male thread portion.These coating also are beneficial to the antirust of screw when increasing hardness.Certainly, also can carry out other antirust processing.
Except plating, can also carry out various heat treatments to tapping screw 3, for example quench, annealing etc., can also carry out case-carbonizing and handle, with the whole tapping screw 3 of the further increase especially hardness of male thread portion, make it as the cutter that the inwall of stamping part hole pipe 7 is processed.
In addition, the thickness of stamping part 1 also can be provided with as required.The material of stamping part 1 is to be suitable for carrying out punching press so that form the various materials of hole pipe 7, the material that promptly has extensibility.
The length of the bar part 9 of tapping screw 3 can equal the length of the hole pipe 7 in the stamping part 1, also can manage 7 length greater than the hole.Though the length of bar part 9 also is feasible less than the length of hole pipe 7, as long as its outside thread can be screwed in the inwall of hole pipe 7, but the tapping screw 3 of managing 7 length less than the hole is not preferred because to be connected 2 with stamping part 1 between the length that combines of the join strength bar part 9 that depends on tapping screw 3 and hole inner tube wall be overlap length.Relatively the length of Duan tapping screw 3 combination in hole pipe 7 is shorter, and its combination force that provides is more weak, under to be connected 2 heavier situation, make easily during tapping screw 3 takes off from hole pipe 7, cause connect losing efficacy, even cause safe failure, during this is to use do not expect to take place.
Compare with the stamping part connection set of prior art shown in Figure 1, by above-mentioned linkage structure of the present utility model, need not to use nut to be connected with the stamping part welding, directly screw togather with tapping screw and stamping part itself, just can realize firm joint, thereby make joint efficiency improve greatly.And the needs that the stamping part front carried out operation such as polishing because of having eliminated that welding process and other might exist make the manufacture cost of associated mechanical device and electronic device also reduce greatly.
Though the utility model is described and illustrates with regard to most preferred embodiment, it should be appreciated by those skilled in the art that and under the situation that does not break away from the utility model claim institute restricted portion, can carry out various combinations and modification.
Claims (10)
1. a stamping part connection set is characterized in that, comprising:
Stamping part (1), it is tabular, and has from the stamping part hole pipe (7) outstanding towards the back side;
To be connected (2) that will link to each other with stamping part; And
Be screwed to the hole by the self tapping process and manage the tapping screw (3) that in the inwall of (7) to be connected (2) is linked to each other with stamping part (1).
2. stamping part connection set as claimed in claim 1 is characterized in that, described hole pipe (7) extends perpendicular to stamping part (1) plane, place.
3. stamping part connection set as claimed in claim 1 is characterized in that, described to be connected (2) have for tapping screw pass and with the Centered attachment hole (8) of hole pipe (7).
4. stamping part connection set as claimed in claim 3 is characterized in that, the diameter of the attachment hole (8) on described to be connected (2) is greater than the diameter of hole pipe (7) and less than the diameter of the screw head of tapping screw (3).
5. stamping part connection set as claimed in claim 1 is characterized in that, described hole pipe (7) has the fillet of being convenient to the initial tapping of tapping screw with the transition portion of described stamping part (1).
6. stamping part connection set as claimed in claim 1 is characterized in that, described to be connected (2) are plate-like piece.
7. stamping part connection set as claimed in claim 1 is characterized in that, described tapping screw (3) has screw head and bar part (9), and the external diameter of described bar part diminishes from the screw head to the taper gradually.
8. stamping part connection set as claimed in claim 7 is characterized in that, the internal diameter of described hole pipe (7) is from diminishing gradually to top end with the stamping part connecting place, and the inclination that (7) inwall is managed in the inclination of the periphery of described bar part and described hole is identical.
9. stamping part connection set as claimed in claim 1 is characterized in that, described tapping screw (3) has screw head and bar part (9), and the length of described bar part is equal to or greater than described hole pipe (7) and goes up extended length from stamping part (1).
10. stamping part connection set as claimed in claim 1 is characterized in that, the screw head of described tapping screw (3) is socket head screw head or outer-hexagonal screw head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120138115 CN202073882U (en) | 2011-04-26 | 2011-04-26 | Self-tapping screw connecting device for stamping part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120138115 CN202073882U (en) | 2011-04-26 | 2011-04-26 | Self-tapping screw connecting device for stamping part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073882U true CN202073882U (en) | 2011-12-14 |
Family
ID=45111986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120138115 Expired - Lifetime CN202073882U (en) | 2011-04-26 | 2011-04-26 | Self-tapping screw connecting device for stamping part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527581A (en) * | 2012-06-29 | 2014-01-22 | 佳能株式会社 | Fastened structure |
| CN105201969A (en) * | 2015-09-14 | 2015-12-30 | 维沃移动通信有限公司 | Threaded connection structure of metal sheet and machining method thereof |
-
2011
- 2011-04-26 CN CN 201120138115 patent/CN202073882U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527581A (en) * | 2012-06-29 | 2014-01-22 | 佳能株式会社 | Fastened structure |
| CN103527581B (en) * | 2012-06-29 | 2016-02-24 | 佳能株式会社 | Fastened structure |
| CN105201969A (en) * | 2015-09-14 | 2015-12-30 | 维沃移动通信有限公司 | Threaded connection structure of metal sheet and machining method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |