CN203463432U - Connecting structure of sheet metal parts - Google Patents
Connecting structure of sheet metal parts Download PDFInfo
- Publication number
- CN203463432U CN203463432U CN201320568973.6U CN201320568973U CN203463432U CN 203463432 U CN203463432 U CN 203463432U CN 201320568973 U CN201320568973 U CN 201320568973U CN 203463432 U CN203463432 U CN 203463432U
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- sheet metal
- metal part
- flanging bore
- boss
- linkage structure
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Abstract
The utility model relates to the technical field of sheet metal parts, in particular to a connecting structure of sheet metal parts. The connecting structure comprises a first sheet metal part, a second sheet metal part and a flexible material plate arranged between the first sheet metal part and the second sheet metal part, wherein a first flanging hole is formed in the first sheet metal part, a second flanging hole is formed in the second sheet metal part, and the first flanging hole and the second flanging hole are fixedly connected through a self-tapping screw; a boss is formed by surrounding the first flanging hole, and a concave surface of the boss and an orifice of the first flanging hole are located on the same side; and a tapered draft angle is formed in the second flanging hole, and an orifice of the second flanging hole is buckled on a thread of the self-tapping screw. Compared with the prior art, the connecting structure for the sheet metal parts can effectively avoid the condition of deformation of the sheet metal parts due to increased pre-tightening force of the screw and can effectively prevent connecting loosening or falling of the sheet metal parts due to insufficient pre-tightening force of the screw, so that the product quality is guaranteed.
Description
Technical field
The utility model relates to sheet metal part technical field, relates in particular to a kind of linkage structure that is applied in the sheet metal part in air-conditioning assembling.
Background technique
In modern industry is produced, due to sheet metal part have lightweight, intensity is high, cost is low, can scale of mass production and the feature such as performance is good, in fields such as household electric appliances, automobile industry, medical device industries, be widely used, for example, in the production process of air-conditioning, the sheet metal part assembling part that is absolutely necessary.
Be accompanied by the Application and Development of sheet metal part, the mode that is connected and fixed of sheet metal part becomes the important link in product development process, in prior art, the general flanging bore with certain size and requirement of strength that processes on sheet metal part, adopt screw to be connected with another sheet metal part through this flanging bore, because flanging bore can increase the area of contact between screw and sheet metal part material effectively, thereby increase workpiece connectivity robustness, so this linkage structure is widely used in the connection between sheet metal part.
But this linkage structure is applied in the sheet metal part connection of air-conditioning products assembling, owing to setting up and having flexible material (as rubber-plastic foamed thermal insulating material) between the sheet metal part on air-conditioning and sheet metal part, this flexible material has compressibility, when using bolt to connect two sheet metal parts, if strengthen the pretightening force of screw, will make sheet metal part produce distortion, affect the attractive in appearance and quality of product design, if the pretightening force deficiency of bolt will make connect loosening between sheet metal part or come off, have a strong impact on the quality of product, the linkage structure of therefore improving sheet metal part is significant.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, a kind of linkage structure of sheet metal part is provided, this linkage structure is strengthening in screw pretightening force or the hypodynamic situation of screw pretension, can effectively avoid sheet metal part to deform or sheet metal part between connect looseningly, guarantee the quality of air-conditioning products.
For achieving the above object, the utility model is achieved through the following technical solutions: a kind of linkage structure of sheet metal part, comprise the first sheet metal part, the second sheet metal part and be arranged at described the first sheet metal part and described the second sheet metal part between flexible material board, described the first sheet metal part moulding is provided with the first flanging bore, described the second sheet metal part moulding is provided with the second flanging bore, and described the first flanging bore is fixedly connected with by self threading pin with described the second flanging bore;
Outer rim moulding along described the first flanging bore is provided with boss, the aperture homonymy of the concave surface of described boss and described the first flanging bore;
Described the second flanging bore is provided with the draft angle of taper, and withhold on the screw thread of described self threading pin in the aperture of described the second flanging bore.
Wherein, the minimum-value aperture of described the first flanging bore is set to be greater than the largest hole of described the second flanging bore;
Wherein, described the first flanging bore is provided with the internal thread that the outside thread with described self threading pin matches.
Wherein, the angle of taper draft angle of described the second flanging bore is identical with the thread taper of described self threading pin.
Wherein, the flange height of described the second flanging bore is not less than a pitch of described self threading pin.
Wherein, the transitional surface of the flange of described the second flanging bore and described the second sheet metal part is all set to arc shaped surface.
Wherein, described boss is provided with the pattern draft at deflection center, and the transition region of described boss and described the first sheet metal part is all set to arc; The transition region of described boss and described the first flanging bore is all set to arc.
Wherein, the ratio of the minimum-value aperture d of described the first flanging bore and the maximum outside diameter D of described boss is set to d: D=1: 3.
Wherein, the maximum outside diameter of described boss is set to be less than the external diameter of the head of a nail of described self threading pin.
The utility model beneficial effect is:
The linkage structure of a kind of sheet metal part described in the utility model, comprise the first sheet metal part, the second sheet metal part and be arranged at the first sheet metal part and the second sheet metal part between flexible material board, the first sheet metal part moulding is provided with the first flanging bore, the second sheet metal part moulding is provided with the second flanging bore, and described the first flanging bore is fixedly connected with by self threading pin with the second flanging bore; Position around the first flanging bore forms boss, the aperture homonymy of the concave surface of boss and the first flanging bore; The second flanging bore is provided with the draft angle of taper, and withhold on the screw thread of self threading pin in the aperture of the second flanging bore.Compared with prior art, the linkage structure of sheet metal part of the present utility model adopts self threading pin be fixedly connected with the first sheet metal part and the second sheet metal part and be added in the flexible material board between two sheet metal parts, the first flanging bore on the first sheet metal part is provided with the internal thread matching with self threading pin outside thread, effectively strengthen the join strength of self threading pin and the first sheet metal part, and the position around the first flanging bore forms boss, when self threading pin precession, this boss will first contact with flexible material and compressed flexible material, because boss has good resiliently deformable, so just can effectively avoid making sheet metal part produce distortion because increasing pretightening force, guarantee the aesthetic property of product design, during the second flanging bore on self threading pin precession to the second sheet metal part, withhold on the screw thread of self threading pin in the aperture with the second flanging bore of taper draft angle, can make self threading pin there is good self-locking property, effectively prevention because pretightening force is not enough, make to connect between sheet metal part loosening or come off, guarantee the quality of product.
accompanying drawing explanation:
Fig. 1 is the structural representation of the linkage structure of a kind of sheet metal part of the present utility model;
Fig. 2 is the sectional view of the linkage structure of a kind of sheet metal part of the present utility model;
Fig. 3 is the sectional view of the first sheet metal part of the linkage structure of a kind of sheet metal part of the present utility model;
Fig. 4 is the sectional view of the second sheet metal part of the linkage structure of a kind of sheet metal part of the present utility model.
In Fig. 1 to Fig. 4, include:
The first sheet metal part 1, the first flanging bore 11, boss 12, transition region 13;
The second sheet metal part 2, the second flanging bore 21, transitional surface 22;
embodiment:
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but mode of execution of the present utility model is not limited to this.
The linkage structure of a kind of sheet metal part of the present utility model as shown in Figures 1 to 4, comprise the first sheet metal part 1, the second sheet metal part 2 and be arranged at the first sheet metal part 1 and the second sheet metal part 2 between flexible material board 3, the first sheet metal part 1 moulding is provided with the first flanging bore 11, the second sheet metal part 2 moulding are provided with the second flanging bore 21, the first flanging bores 11 and are fixedly connected with by self threading pin 4 with the second flanging bore 21;
Outer rim moulding along the first flanging bore 11 is provided with boss 12, the aperture homonymy of the concave surface of boss 12 and the first flanging bore 11, this boss 12 has good resiliently deformable, so just can effectively avoid making sheet metal part produce distortion because increasing screw pretightening force, guarantees the aesthetic property of product design;
The second flanging bore 21 is provided with the draft angle of taper, and withhold on the screw thread of self threading pin 4 in the aperture of the second flanging bore 21, realizes the self-locking of self threading pin 4 and the second flanging bore 21, guarantees the reliability connecting.
In the present embodiment, the minimum-value aperture of the first flanging bore 11 is set to be greater than the maximum diameter of hole of the second flanging bore 21, and this kind of structure is conducive to self threading pin 4 accurately through the first flanging bore 11 and the second flanging bore 21, realize sheet metal part simply, connect fast.
Concrete, the first flanging bore 11 is provided with the internal thread that the outside thread with self threading pin 4 matches, thereby it is seamless applying that self threading pin 4 and the first sheet metal part 1 are realized, soundness and the reliability of reinforcement joint.
In the present embodiment, the angle of the taper draft angle of the second flanging bore 21 is identical with the thread taper of self threading pin 4.
Concrete, the flange height of the second flanging bore 21 is not less than a pitch of described self threading pin, can make the aperture of the second flanging bore 21 withhold on the screw thread of self threading pin 4, and then make self threading pin 4 there is good self-locking property, high anti-loose ability, effectively avoid because screw pretightening force is not enough, making between sheet metal part, connect loosening or come off, guarantee the quality of product.
Concrete, the transitional surface 22 of the flange of described the second flanging bore 21 and described the second sheet metal part 2 is all set to arc shaped surface, make self threading pin 4 can enter exactly interior connection the second sheet metal part 2 of the second flanging bore 21, and this arc shaped surface structure is easy to machine shaping.
In the present embodiment, boss 12 is provided with the pattern draft at deflection center, and the transition region 13 of boss 12 and the first sheet metal part 1 is all set to arc; The transition region 13 of boss 12 and the first flanging bore 11 is all set to arc.The setting in this arc-shaped transition region 13 can make the moulding of boss 12 and the first flanging bore 11 simple and convenient, and has effectively increased the area of contact of the first sheet metal part 1 with flexible material board 3, strengthens the non-deformability of sheet metal part.
Concrete, the ratio of the minimum-value aperture d of the first flanging bore 11 and the maximum outside diameter D of described boss is set to d: D=1: 3, this proportional numerical value can be strengthened the elastic deformability of boss 12 better, and then when strengthening the pretightening force of self threading pin 4, can effectively prevent the distortion of sheet metal part.
Concrete, the maximum outside diameter of boss 12 is set to be less than the external diameter of the head of a nail of self threading pin 4, increases the area of contact of self threading pin 4 and the first sheet metal part 1, can a progressive pretightening force that increases self threading pin 4, improve reliability, the soundness of connection.
In sum, owing to adopting self threading pin 4 to connect the first flanging bore 11 and the second flanging bore 12, and on the basis of left flange 11 structures, also form boss 12 structures, these boss 12 structures have good resiliently deformable, therefore, the utility model can effectively be avoided because strengthening screw pretightening force, sheet metal part being deformed; Simultaneously, the second flanging bore 21 is provided with the draft angle of taper, withhold on the screw thread of self threading pin 4 in the aperture of the second flanging bore 21, can make self threading pin 4 there is good high anti-loosening property power, therefore, the utility model can also effectively prevent because screw pretightening force is not enough, to make between sheet metal part, connect loosening or come off, and guarantees the quality of air-conditioning products.The linkage structure of a kind of sheet metal part described in the utility model, can be widely used in electronic product, the especially combination between various sheet metal parts and installation in field of air conditioning.
The above is only preferred embodiment of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (9)
1. the linkage structure of a sheet metal part, comprise the first sheet metal part, the second sheet metal part and be arranged at described the first sheet metal part and described the second sheet metal part between flexible material board, it is characterized in that: described the first sheet metal part moulding is provided with the first flanging bore, described the second sheet metal part moulding is provided with the second flanging bore, and described the first flanging bore is fixedly connected with by self threading pin with described the second flanging bore;
Outer rim moulding along described the first flanging bore is provided with boss, the aperture homonymy of the concave surface of described boss and described the first flanging bore;
Described the second flanging bore is provided with the draft angle of taper, and withhold on the screw thread of described self threading pin in the aperture of described the second flanging bore.
2. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: the minimum-value aperture of described the first flanging bore is set to be greater than the maximum diameter of hole of described the second flanging bore.
3. the linkage structure of a kind of sheet metal part according to claim 2, is characterized in that: described the first flanging bore is provided with the internal thread that the outside thread with described self threading pin matches.
4. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: the angle of taper draft angle of described the second flanging bore is identical with the thread taper of described self threading pin.
5. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: the flange height of described the second flanging bore is not less than a pitch of described self threading pin.
6. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: the transitional surface of the flange of described the second flanging bore and described the second sheet metal part is all set to arc shaped surface.
7. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: described boss is provided with the pattern draft at deflection center, and the transition region of described boss and described the first sheet metal part is all set to arc; The transition region of described boss and described the first flanging bore is all set to arc.
8. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: the ratio of the minimum-value aperture d of described the first flanging bore and the maximum outside diameter D of described boss is set to d: D=1: 3.
9. the linkage structure of a kind of sheet metal part according to claim 1, is characterized in that: the maximum outside diameter of described boss is set to be less than the external diameter of the head of a nail of described self threading pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568973.6U CN203463432U (en) | 2013-09-13 | 2013-09-13 | Connecting structure of sheet metal parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568973.6U CN203463432U (en) | 2013-09-13 | 2013-09-13 | Connecting structure of sheet metal parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463432U true CN203463432U (en) | 2014-03-05 |
Family
ID=50175799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320568973.6U Expired - Lifetime CN203463432U (en) | 2013-09-13 | 2013-09-13 | Connecting structure of sheet metal parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463432U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972716A (en) * | 2016-06-23 | 2016-09-28 | 珠海格力电器股份有限公司 | Sheet metal part connecting structure and air conditioner outdoor unit |
| CN109982891A (en) * | 2016-11-21 | 2019-07-05 | 标致雪铁龙汽车股份有限公司 | Detachable stiffening device for being fastened on the sliding part of the seat of vehicle on supporting element |
| CN112160958A (en) * | 2020-10-10 | 2021-01-01 | 黄山天之都环境科技发展有限公司 | Connecting structure and connecting method for parts at thin plate of spray cooling dust remover |
-
2013
- 2013-09-13 CN CN201320568973.6U patent/CN203463432U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972716A (en) * | 2016-06-23 | 2016-09-28 | 珠海格力电器股份有限公司 | Sheet metal part connecting structure and air conditioner outdoor unit |
| CN105972716B (en) * | 2016-06-23 | 2020-09-04 | 珠海格力电器股份有限公司 | Sheet metal part connecting structure and air conditioner outdoor unit |
| CN109982891A (en) * | 2016-11-21 | 2019-07-05 | 标致雪铁龙汽车股份有限公司 | Detachable stiffening device for being fastened on the sliding part of the seat of vehicle on supporting element |
| CN112160958A (en) * | 2020-10-10 | 2021-01-01 | 黄山天之都环境科技发展有限公司 | Connecting structure and connecting method for parts at thin plate of spray cooling dust remover |
| CN112160958B (en) * | 2020-10-10 | 2022-02-18 | 黄山天之都环境科技发展有限公司 | Connecting structure and connecting method for parts at thin plate of spray cooling dust remover |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |