CN217976972U - Air conditioner and fastener - Google Patents
Air conditioner and fastener Download PDFInfo
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- CN217976972U CN217976972U CN202121832393.4U CN202121832393U CN217976972U CN 217976972 U CN217976972 U CN 217976972U CN 202121832393 U CN202121832393 U CN 202121832393U CN 217976972 U CN217976972 U CN 217976972U
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- straight hole
- connecting portion
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Abstract
The utility model discloses an air conditioner and fastener, wherein, the fastener includes: a main body part provided with a straight hole; a connecting portion extending from an outer side of the main body portion in a radially outward direction of the straight hole; the welding bulge is arranged on one side of the connecting part and protrudes out of the connecting part; wherein, be provided with the internal thread in the straight hole, connecting portion and welding bulge are made by metal material. The utility model provides a technical scheme aims at solving and adopts resistance welding weld nut to destroy the technical problem of screw thread easily.
Description
Technical Field
The utility model relates to a mechanical connection technique, concretely relates to air conditioner and fastener.
Background
Resistance welding is a method of welding by locally heating a workpiece and applying pressure thereto while using resistance heat generated by passing a current through the workpiece and a contact portion as a heat source. During welding, metal does not need to be filled, the production efficiency is high, the deformation of a weldment is small, and the automation is easy to realize.
The nut is usually welded on the mounting base by resistance welding, the nut and the mounting base are abutted together firstly in the welding process, then the nut and the mounting base are clamped between two electrodes, and in order to prevent electric arc from occurring between the contact surfaces of the nut and the mounting base, the two electrodes respectively apply opposite pressure to the nut and the mounting base so that the nut and the mounting base are tightly attached together; and finally, applying a voltage between the two electrodes to enable current to flow between the nut and the mounting base, wherein the resistance at the interface between the nut and the mounting base is large, and the surfaces of the nut and the mounting base are heated and melted when the current passes through the interface between the nut and the mounting base, so that the nut and the mounting base are mutually welded.
However, the current and pressure applied to the nut and the mounting base by the electrode need to be controlled very precisely, and if the current and pressure are slightly deviated, the thread in the nut is damaged, so that the large-scale automatic processing production is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fastener aims at solving and adopts resistance welding weld nut to destroy the technical problem of screw thread easily.
To achieve the above object, the present invention provides a fastener, including:
a main body part provided with a straight hole;
a connecting portion extending from an outer side of the main body portion in a radially outward direction of the straight hole; and
a welding projection which is arranged on one side of the connecting part and projects out of the connecting part;
wherein, be provided with the internal thread in the straight hole, connecting portion and welding bulge are all made by metal material.
In an exemplary embodiment, the connecting portion is configured as a flat plate structure, and the welding projection is provided on a plate surface of the connecting portion, the plate surface being perpendicular to an axial direction of the straight hole.
In one exemplary embodiment, the connecting portion is configured as an annular flat plate surrounding the main body portion;
the welding protrusion is provided with a plurality of, and is a plurality of the welding protrusion is located on the same face of connecting portion and along the circumference interval arrangement of connecting portion.
In one exemplary embodiment, the welding projection is configured as a rib;
the closer the welding projection is to the top thereof, the narrower the width thereof.
In an exemplary embodiment, the fastener further includes a fin attached to an inner wall of the straight hole and perpendicular to an axial direction of the straight hole.
In one exemplary embodiment, the fin is configured as a circular arc-shaped flat plate extending along an inner wall of the straight hole.
In an exemplary embodiment, the fins are provided in plurality, and the fins are provided at the same axial position of the straight hole and spaced from each other.
In an exemplary embodiment, the fastener further comprises a cylindrical positioning part for positioning the cylindrical foot pad;
one end of the positioning part is connected to the main body part, and an inner hole of the positioning part is coaxial with the straight hole.
In an exemplary embodiment, an inner diameter of the inner bore of the positioning portion is greater than or equal to a nominal diameter of the internal thread.
In an exemplary embodiment, the connecting portion is adapted to be welded to a mounting base, and the welding projection is adapted to be melted into a nugget connecting the mounting base and the connecting portion when welded.
The utility model also provides an air conditioner, it includes as above the fastener, the fastener install in the box.
In one exemplary embodiment, the air conditioner further includes a compressor assembly including a compressor and legs connected to the compressor;
the box body comprises a bottom plate, the connecting part is welded with the bottom plate, and the welding bulge is melted into a nugget connecting the bottom plate and the connecting part in the welding process;
the legs are fixed to the base plate by bolting with the fasteners.
The utility model discloses among the technical scheme, at the welded in-process, the main part does not contact with resistance welder's electrode on the fastener, and the main part does not bear pressure, and can not have the process of electric current on the main part. In the welding process, even if the voltage and the pressure loaded by the resistance welding machine are larger, the internal threads in the straight hole can be kept complete, and the large-scale automatic welding difficulty of the fastener is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a perspective view of a fastener according to an embodiment of the present invention;
FIG. 2 is a top schematic view of the fastener of FIG. 1;
FIG. 3 is a schematic bottom view of the fastener of FIG. 1;
FIG. 4 is a front view of the fastener of FIG. 1;
FIG. 5 isbase:Sub>A schematic cross-sectional view taken along plane A-A of FIG. 4;
fig. 6 is a schematic view of a fastener and a mounting base performing resistance welding in an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view taken along the plane B-B in FIG. 6;
FIG. 8 is an enlarged view of a portion of FIG. 7 at D;
FIG. 9 is an enlarged view of a fin according to an embodiment of the present invention;
fig. 10 is a schematic top view of an assembled mounting base according to an embodiment of the invention;
FIG. 11 is a schematic cross-sectional view taken along plane C-C of FIG. 10;
FIG. 12 is an enlarged view of a portion of FIG. 11 at E;
fig. 13 is a partial enlarged view at F in fig. 11.
The reference numbers illustrate:
1. a fastener; 11. a main body portion; 111. a straight hole; 112. an internal thread; 12. a connecting portion; 13. welding a bump; 14. a positioning part; 141. an inner bore; 15. a fin; 2. mounting a base; 3. a first electrode; 4. a second electrode; 5. a bolt; 6. a foot pad.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use a person skilled in the art to realize the basis, and when the technical solutions are combined and contradictory to each other or cannot be realized, the combination of the technical solutions should not exist, and is not within the protection scope of the present invention.
1-5, a fastener 1 of the present embodiment is shown in FIGS. 1-5. The fastener 1 is intended to be welded to a mounting base 2 by a resistance welding process. The mounting base 2 is a metal piece, and the mounting base 2 can be a bottom plate of an air conditioner box body.
The fastener 1 includes a main body portion 11, a connecting portion 12, and a welding projection 13. The main body 11 is provided with a straight hole 111. The cross-section of the straight hole 111 is circular. The straight hole 111 may be a through hole or a blind hole. An internal thread 112 is provided in the straight bore 111. In the present embodiment, the body portion 11 is configured in a cylindrical shape, and the straight hole 111 is an inner hole of the body portion 11.
The connecting portion 12 is provided at one side of the main body portion 11. The connecting portion 12 projects from the outer side surface of the main body portion 11 in a radially outward direction of the straight hole 111. The connection portion 12 may be configured as a plate-shaped structure or a bar-shaped structure protruding from the main body portion 11.
The welding projection 13 is provided on one side of the connection portion 12. The welding projection 13 protrudes from the connecting portion 12. The projecting direction of the welding projection 13 is the axial direction of the straight hole 111 of the main body portion 11.
The connecting portion 12 and the welding projections 13 of the fastener 1 are made of a metal material including, but not limited to, iron, aluminum, copper, and alloys thereof. In the present embodiment, the fastening member 1 is a unitary structure, and the whole fastening member 1 is made of the same metal material, such as steel.
As shown in fig. 6 to 8, in the process of welding the fastening member 1 to the mounting base 2, the connecting portion 12 of the fastening member 1 is first stacked on the mounting base 2 with the welding projection 13 being abutted against the mounting base 2. And then, a first electrode 3 of the resistance welding machine is abutted against the surface of the connecting part 12, which is far away from the mounting base 2, and a second electrode 4 of the resistance welding machine is abutted against the surface of the mounting base 2, which is far away from the connecting part 12, so that the first electrode 3 exerts pressure on the connecting part 12, the second electrode 4 exerts pressure on the mounting base 2, which is far towards the connecting part 12, and the connecting part 12 and the mounting base 2 have the tendency of moving in opposite directions. A voltage is applied between the first electrode 3 and the second electrode 4 to generate a current flowing through the first electrode 3, the connecting portion 12, the welding protrusion 13, the mounting base 2 and the second electrode 4, since the contact area between the welding protrusion 13 and the mounting base 2 is small and the resistance value at this position is large, the interface between the welding protrusion 13 and the mounting base 2 generates heat when the current passes through the interface, so that the welding protrusion 13 melts, the connecting portion 12 and the mounting base 2 gradually approach each other and finally abut against each other during the melting of the welding protrusion 13, and the welding protrusion 13 melts into a nugget connecting the connecting portion 12 and the mounting base 2 together.
During the welding process, the main body 11 of the fastening member 1 is not in contact with the first electrode 3, the main body 11 is not under pressure, and no current flows through the main body 11. During welding, the internal threads 112 in the straight bore 111 remain intact even when the resistance welder is subjected to relatively high voltages and pressures. Such a fastener 1 reduces the difficulty of large-scale automated welding of the fastener 1.
In one exemplary embodiment, the connecting portion 12 is a flat plate structure. The connecting portion 12 has two mutually parallel plate surfaces, which are flat surfaces. The plate surface of the connecting portion 12 is perpendicular to the axial direction of the straight hole 111 of the body portion 11. The welding projection 13 is arranged on one plate surface, and the welding projection 13 protrudes out of the plate surface.
The connecting portion 12 is arranged to be of a flat plate structure, the welding protrusions 13 protrude out of the surface of the connecting portion 12, before the welding protrusions 13 are completely melted, the connecting portion 12 is not prone to contacting with the mounting base 2, current only flows through the contact surface between the welding protrusions 13 and the mounting base 2, after the welding protrusions 13 are completely melted, the contact surface between the connecting portion 12 and the mounting base 2 is large, acting force between the connecting portion 12 and the mounting base 2 is evenly distributed, the welding protrusions 13 can be filled between the connecting portion 12 and the mounting base 2 evenly after being melted, and welding between the connecting portion 12 and the mounting base 2 is firmer.
In one exemplary embodiment, the connecting portion 12 is configured as an annular flat plate. The annular plate may be a circular plate. An annular flat plate surrounds the body portion 11. The annular flat plate may be disposed coaxially with the straight hole 111 of the body portion 11.
The welding projection 13 is provided in plural, and the number of the welding projections 13 may be 3, for example. A plurality of welding projections 13 are all provided on the same plate surface of the annular flat plate. A plurality of welding projections 13 are arranged at intervals in the circumferential direction of the connecting portion 12. The distance between two adjacent welding projections 13 may be the same.
The welding projections 13 are arranged at intervals in the circumferential direction of the connecting part 12, a plurality of welding points welded with the mounting base 2 are formed on the connecting part 12 after the welding projections 13 are melted, and the welding between the connecting part 12 and the mounting base 2 is firmer. An annular flat plate surrounds the main body portion 11, and the annular flat plate can transmit larger load between the main body portion 11 and the mounting base 2, so that the main body portion 11 and the mounting base 2 are connected more tightly.
In an exemplary embodiment, the welding projection 13 is configured as a rib. The cross-section of the welding projection 13 is triangular, one side of the triangle is flush with the plate surface of the connecting part 12, and one corner of the triangle faces to the direction away from the connecting part 12. The closer the welding projection 13 is to the top thereof, the narrower the width thereof. The top of the welding projection 13 may be a sharp edge.
The width of the top of the welding projection 13 is smaller than that of the bottom, the contact area between the top of the welding projection 13 and the mounting base 2 is smaller during welding, the resistance of the contact surface of the top of the welding projection and the mounting base is larger, and the welding projection can be rapidly heated and melted during welding. Meanwhile, during the welding process, the welding projection 13 can be controlled to be gradually melted from the top to the bottom.
In an exemplary embodiment, as shown in fig. 3 and 9, the fastener 1 further includes fins 15. The fins 15 are configured as circular arc-shaped flat plates. The fin 15 is disposed in the straight hole and at one end of the internal thread 112. The fins 15 extend along the inner wall of the straight hole 111. The plate surface of the fin 15 is perpendicular to the axial direction of the straight hole 111. The height of the external thread in the straight hole 111 is equal to the width of the fin 15.
After the fins 15 are provided, the bolts 5 are screwed into the straight holes 111, and the fins 15 are pushed into the external thread of the bolts 5 and are deformed accordingly. The large pretightening force between the fins 15 and the external threads of the bolt 5 enables the bolt 5 to be clamped and difficult to withdraw from the straight hole, and therefore the bolt is anti-loose.
In an exemplary embodiment, the fins 15 are provided in plurality, for example, 2. The plurality of fins 15 are all located at the same axial position of the straight-through, and the plurality of fins 15 are flush with each other. Two adjacent fins 15 are provided at intervals.
After the bolt 5 is screwed into the straight hole 111, the plurality of fins 15 seize the bolt 5 from multiple directions at the same time, making it more difficult for the bolt 5 to exit from the straight hole 111.
In an exemplary embodiment, fastener 1 further includes a locating portion 14. The positioning portion 14 is configured as a cylindrical structure. The positioning portion 14 may be cylindrical. One end of the positioning portion 14 is connected to the main body portion 11. The positioning portion 14 is provided with an inner hole 141, and the inner hole 141 is a circular hole. One end of the inner hole 141 of the positioning portion 14 communicates with one end of the straight hole 111, and the inner hole 141 and the straight hole 111 are coaxially disposed. The positioning portion 14 is used to position the foot pad 6.
As shown in fig. 10 to 13, the foot pad 6 is a cylindrical elastic pad. The foot pad 6 can elastically support a compressor of an air conditioner for damping the compressor. When the fastener 1 is welded to the mounting base 2, the positioning portion 14 of the fastener 1 faces upward. When assembling callus on the sole 6, only need to complete the location of callus on the sole 6 on location portion 14 with callus on the sole 6 suit, pass the straight hole 111 that the callus on the sole 6 screwed into fastener 1 with bolt 5 at last in order to fix callus on the sole 6. Fix a position callus on the sole 6 through the mode of with callus on the sole 6 suit on location portion 14 and can be quick install callus on the sole 6 and predetermine the position to convenient big automatic assembly in batches.
In an exemplary embodiment, the inner diameter of the inner bore 141 of the positioning portion 14 is less than or equal to the nominal diameter of the internal thread 112 in the straight bore 111.
In the process that the bolt 5 is screwed into the fastener 1, the bolt 5 is firstly inserted into the inner hole 141 of the positioning part 14, and because the inner diameter of the inner hole 141 of the positioning part 14 is larger than or equal to the nominal diameter of the internal thread 112, the bolt 5 is more easily inserted into the positioning part 14, thereby facilitating mass automatic assembly.
The utility model also provides an air conditioner, this air conditioner include as above fastener 1, compressor unit spare and box. The compressor assembly includes a foot and a compressor. The support legs are disposed at the bottom of the compressor. The legs are fixedly connected to the compressor, for example by welding. The box comprises a base plate which is the mounting base 2 as described above. The base plate is welded to the connecting portion 12 of the fastener 1. The supporting legs are provided with mounting holes. The bolt 5 is screwed into the straight hole 111 of the fastener 1 through the mounting hole of the leg so that the fastener 1 is bolted to the leg. The foot is fixed to the base plate by means of a fastener 1 and a bolt 5. The support leg may be clamped between the nut of the bolt 5 and the foot pad 6, and the foot pad 6 elastically supports the support leg.
The specific structure of the fastener 1 is as described above with reference to the embodiments. Since the air conditioner adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (12)
1. A fastener, characterized by comprising:
a main body part provided with a straight hole;
a connecting portion extending from an outer side of the main body portion in a radially outward direction of the straight hole; and
the welding bulge is arranged on one side of the connecting part and protrudes out of the connecting part;
wherein, be provided with the internal thread in the straight hole, connecting portion and welding bulge are all made by metal material.
2. The fastener according to claim 1, wherein the connecting portion is configured as a flat plate structure, and the welding projection is provided on a plate surface of the connecting portion, the plate surface being perpendicular to an axial direction of the straight hole.
3. The fastener of claim 2, wherein the connecting portion is configured as an annular flat plate surrounding the body portion;
the welding protrusion is provided with a plurality of, and is a plurality of the welding protrusion is located on the same face of connecting portion and along the circumference interval arrangement of connecting portion.
4. A fastener according to any one of claims 1 to 3, wherein the welding projection is configured as a rib;
the closer the welding projection is to the top thereof, the narrower the width thereof.
5. The fastener according to any one of claims 1 to 3, further comprising a fin connected to an inner wall of the straight hole and perpendicular to an axial direction of the straight hole.
6. The fastener of claim 5, wherein the fin is configured as a circular arc shaped flat plate extending along an inner wall of the straight hole.
7. The fastener of claim 6, wherein the fins are provided in plural, and the plural fins are provided at the same axial position of the straight hole and spaced from each other.
8. The fastener according to any one of claims 1 to 3, further comprising a cylindrical positioning portion for positioning a cylindrical footpad;
one end of the positioning part is connected to the main body part, and an inner hole of the positioning part is coaxial with the straight hole.
9. The fastener of claim 8, wherein the inner diameter of the bore of the detent is greater than or equal to the nominal diameter of the internal thread.
10. A fastener according to any one of claims 1 to 3, wherein the connecting portion is adapted to be welded to a mounting base, and the welding projection is adapted to be melted upon welding into a nugget connecting the mounting base and the connecting portion.
11. An air conditioner comprising a cabinet and a fastener as claimed in any one of claims 1 to 10 mounted to the cabinet.
12. The air conditioner of claim 11, further comprising a compressor assembly including a compressor and legs connected to the compressor;
the box body comprises a bottom plate, the connecting part is welded with the bottom plate, and the welding bulge is melted into a nugget connecting the bottom plate and the connecting part in the welding process;
the legs are fixed to the base plate by bolting with the fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121832393.4U CN217976972U (en) | 2021-08-06 | 2021-08-06 | Air conditioner and fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121832393.4U CN217976972U (en) | 2021-08-06 | 2021-08-06 | Air conditioner and fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217976972U true CN217976972U (en) | 2022-12-06 |
Family
ID=84254367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121832393.4U Active CN217976972U (en) | 2021-08-06 | 2021-08-06 | Air conditioner and fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217976972U (en) |
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2021
- 2021-08-06 CN CN202121832393.4U patent/CN217976972U/en active Active
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