CN217842032U - Metal powder injection molding joint and flexible transmission device - Google Patents
Metal powder injection molding joint and flexible transmission device Download PDFInfo
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- CN217842032U CN217842032U CN202222114554.7U CN202222114554U CN217842032U CN 217842032 U CN217842032 U CN 217842032U CN 202222114554 U CN202222114554 U CN 202222114554U CN 217842032 U CN217842032 U CN 217842032U
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- metal powder
- powder injection
- injection molding
- joint
- flexible transmission
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- 239000002184 metal Substances 0.000 title claims abstract description 71
- 239000000843 powder Substances 0.000 title claims abstract description 43
- 238000001746 injection moulding Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 title abstract description 23
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 229920001971 elastomer Polymers 0.000 abstract description 23
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005488 sandblasting Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004548 suspo-emulsion Substances 0.000 description 1
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model provides a metal powder injection moulding connects and flexible transmission relates to transmission technical field, has solved the flexible transmission between motor shaft and the water pump rotor that prior art exists, and its metal joint is less with the area of contact of rubber, and the risk of coming unstuck is great, and the higher technical problem of processing cost. This metal powder injection molding connects includes disc portion and connecting portion, wherein: the connecting part is arranged in the center of the disc part, one end surface of the connecting part and the lower surface of the disc part are positioned on the same plane, and the other end surface of the connecting part protrudes out of the upper surface of the disc part; the disk part is circumferentially provided with a plurality of through holes penetrating through the upper surface and the lower surface of the disk part, and the side surface of the disk part is provided with a plurality of grooves. The utility model is used for reduce the processing cost of metal joint and the risk of coming unstuck among the flexible transmission between motor shaft and the water pump rotor.
Description
Technical Field
The utility model belongs to the technical field of the transmission technique and specifically relates to a metal powder injection moulding connects and flexible transmission.
Background
Water pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, and is mainly used to transfer liquid including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal. At present, a driving motor is generally used to connect and drive a water pump through a flexible connecting device.
The applicant found that: in the prior art, a metal joint for soft connection between a plastic motor shaft and a plastic water pump rotor has a small contact area with rubber and a large degumming risk; in addition, the metal joint is usually machined by a bar material, and the shape of the metal joint is complex, so that the metal joint has more machining items and higher machining cost.
In summary, the prior art has at least the following technical problems:
in the flexible transmission device between the motor shaft and the water pump rotor, the contact area between a metal joint and rubber is small, the degumming risk is large, and the processing cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a metal powder injection moulding connects and flexible transmission has solved the flexible transmission between motor shaft and the water pump rotor that prior art exists, and its metal joint is less with the area of contact of rubber, and the risk of coming unstuck is great, and the higher technical problem of processing cost.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a metal powder injection moulding connects of embodiment, including disc portion and connecting portion, wherein:
the connecting part is arranged in the center of the disc part, one end surface of the connecting part and the lower surface of the disc part are positioned on the same plane, and the other end surface of the connecting part protrudes out of the upper surface of the disc part;
the disk part is circumferentially provided with a plurality of through holes penetrating through the upper surface and the lower surface of the disk part, and the side surface of the disk part is provided with a plurality of grooves.
In an alternative embodiment, the through holes are uniformly arranged in the circumferential direction of the disc portion, the grooves are uniformly arranged in the side surface of the disc portion, and the through holes and the grooves are arranged at intervals.
In an alternative embodiment, the number of through holes is set to 8.
In an alternative embodiment, the number of grooves is set to 8.
In an alternative embodiment, the inner surface of the connecting portion is provided with a thread.
In an alternative embodiment, the outer surface of the connecting portion is provided with a clamping surface.
The utility model provides a flexible transmission of embodiment, connect including the elastic sleeve body and foretell metal powder injection moulding, wherein: the two ends of the elastic sleeve body are respectively wrapped and bonded with the disk parts of the two metal powder injection molding joints, and the connecting parts protrude out of the end face of the elastic sleeve body.
In an alternative embodiment, the threads of the connecting portion of one metal powder injection molded fitting are M12 and the threads of the connecting portion of the other metal powder injection molded fitting are M10.
Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least:
the utility model provides a metal powder injection molding joint and a flexible transmission device, wherein a connecting part is arranged in the center of a disk part, one end surface of the connecting part and the lower surface of the disk part are positioned on the same plane, and the other end surface of the connecting part protrudes out of the upper surface of the disk part; the disk part is circumferentially provided with a plurality of through holes penetrating through the upper surface and the lower surface of the disk part, and the side surface of the disk part is provided with a plurality of grooves.
In the prior art, a metal joint for soft connection between a plastic motor shaft and a plastic water pump rotor has a small contact area with rubber and a large degumming risk; in addition, the metal joint is usually machined by a bar material, and the shape of the metal joint is complex, so that more processing items and higher processing cost are caused.
Compared with the prior art, the utility model improves the metal joint into metal powder injection molding (MIM) processing, firstly uses a mould to process a joint metal blank, and then mechanically processes the screw thread of the connecting part and the groove of the disc part, thereby avoiding more processing items of mechanical processing and reducing the processing cost; the elastic sleeve body is made of a natural rubber material, after the metal powder injection molding joint is processed, the adhesive is coated on the outer surface of the metal powder injection molding joint after sand blasting, then the metal powder injection molding joint is placed in a mold to inject and melt rubber, the disc part is completely wrapped by the rubber, and the contact area between the joint and the rubber is increased by the through holes and the grooves, so that the risk of degumming is reduced. One side of the M12 thread is connected with a motor shaft, one side of the M10 thread is connected with a water pump rotor, when the motor shaft rotates and drives the water pump rotor to move through a flexible transmission device, the water pump rotor can do rotating motion and eccentric motion along the inner surface of a stator, the eccentric motion of a water pump is counteracted by the elasticity of rubber, and the motor shaft is kept to rotate along the same axis. Therefore, the technical problems that in a flexible transmission device between a motor shaft and a water pump rotor in the prior art, the contact area between a metal joint and rubber is small, the degumming risk is large, and the processing cost is high are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic perspective view of an M12 metal powder injection molded joint provided by the present invention;
FIG. 2 is a schematic front view of an M12 metal powder injection molded joint provided by the present invention;
FIG. 3 isbase:Sub>A schematic sectional view A-A of FIG. 2;
FIG. 4 is a schematic cross-sectional view B-B of FIG. 2;
fig. 5 is a schematic perspective view of an M10 metal powder injection molded joint provided by the present invention;
FIG. 6 is a schematic front view of an M10 metal powder injection molded joint provided by the present invention;
FIG. 7 isbase:Sub>A schematic sectional view A-A of FIG. 6;
FIG. 8 is a schematic cross-sectional view B-B of FIG. 6;
fig. 9 is a schematic perspective view of a flexible transmission provided by the present invention;
fig. 10 is a schematic front view of a flexible transmission according to the present invention.
Reference numerals: 1. injection molding a joint with metal powder; 11. a disk portion; 111. a through hole; 112. a groove; 12. a connecting portion; 121. clamping the surface; 2. an elastic sleeve body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiment is only one of the embodiments of the present invention, and not all embodiments. Based on the embodiment in the utility model provides a, this technical field ordinary skilled person does not make all other implementation modes that obtain under the prerequisite of creative work, all belong to the utility model discloses the scope protected.
The embodiment of the utility model provides a metal powder injection moulding connects and flexible transmission.
The technical solution provided by the present invention will be explained in more detail with reference to fig. 1 to 10.
Example 1:
as shown in fig. 1 to 10, a metal powder injection molding joint 1 according to an embodiment of the present invention includes a disk portion 11 and a connecting portion 12, wherein:
the connecting part 12 is arranged in the center of the disk part 11, one end surface of the connecting part 12 is in the same plane with the lower surface of the disk part 11, and the other end surface of the connecting part 12 protrudes out of the upper surface of the disk part 11;
the disk portion 11 is provided with a plurality of through holes 111 penetrating the upper and lower surfaces of the disk portion 11 in the circumferential direction, and the side surface of the disk portion 11 is provided with a plurality of grooves 112.
In the prior art, a metal joint for soft connection between a plastic motor shaft and a plastic water pump rotor has a small contact area with rubber and a large degumming risk; in addition, the metal joint is usually machined by a bar material, and the shape of the metal joint is complex, so that the metal joint has more machining items and higher machining cost.
Compared with the prior art, the utility model discloses improve metal joint into metal powder injection moulding (MIM) processing, use the mould to process the joint metal blank earlier, then machining connecting portion 12's screw thread and disc portion 11's recess 112, avoided more processing items of machining, reduced the processing cost; the elastic sleeve body 2 is made of a natural rubber material, after the metal powder injection molding joint 1 is processed, the outer surface is coated with the adhesive after sand blasting, then the metal powder injection molding joint is placed in a mold to be injected and melted with rubber, the disc part 11 is completely wrapped by the rubber, and the contact area between the joint and the rubber is increased by the through hole 111 and the groove 112, so that the risk of degumming is reduced. Therefore, the technical problems that the contact area of a metal joint and rubber of the flexible transmission device between a motor shaft and a water pump rotor in the prior art is small, the degumming risk is high and the processing cost is high are solved.
As an alternative embodiment, the through holes 111 are uniformly arranged in the circumferential direction of the disk part 11, the grooves 112 are uniformly arranged in the side of the disk part 11, and the through holes 111 and the grooves 112 are arranged at intervals. The structure is convenient to process and manufacture, the through hole 111 is formed by a die, the grooves 112 are machined, and the grooves are evenly arranged at intervals so as to balance stress.
As an alternative embodiment, the number of the through holes 111 is set to 8. The above amount can be satisfied to increase the contact area of the joint and the rubber. Of course, the above number may be set larger or smaller as necessary.
As an alternative embodiment, the number of grooves 112 is set to 8. The above amount can be satisfied to increase the contact area of the joint and the rubber. Of course, the above number may be set larger or smaller as necessary.
As an alternative embodiment, the inner surface of the connection portion 12 is provided with a thread. The structure is convenient for processing and manufacturing, and is convenient for externally connecting a motor or a water pump.
As an alternative embodiment, the outer surface of the connecting portion 12 is provided with a clamping surface 121. The structure is convenient to process and manufacture, and the two opposite clamping surfaces 121 are arranged on the outer surface of the connecting part 12, so that the spanner can be conveniently pulled and installed.
Example 2:
as shown in fig. 1 to 10, the flexible transmission device provided by the embodiment of the present invention includes an elastic sleeve body 2 and the metal powder injection molding joint 1, wherein: the two ends of the elastic sleeve body 2 are respectively wrapped and bonded with the disk parts 11 of the two metal powder injection molding joints 1, and the connecting part 12 protrudes out of the end surface of the elastic sleeve body 2. The screw thread of the connecting portion 12 of one metal powder injection molded joint 1 is M12, and the screw thread of the connecting portion 12 of the other metal powder injection molded joint 1 is M10.
In the prior art, a metal joint for soft connection between a plastic motor shaft and a plastic water pump rotor has a small contact area with rubber and a large degumming risk; in addition, the metal joint is usually machined by a bar material, and the shape of the metal joint is complex, so that the metal joint has more machining items and higher machining cost.
Compared with the prior art, the utility model discloses improve metal joint into metal powder injection moulding (MIM) processing, use the mould to process the joint metal blank earlier, then machining connecting portion 12's screw thread and disc portion 11's recess 112, avoided more processing items of machining, reduced the processing cost; the elastic sleeve body 2 is made of natural rubber material, after the metal powder injection molding joint 1 is processed, the adhesive is smeared on the outer surface after sand blasting, then the metal powder injection molding joint is placed in a mold to be injected and melted with rubber, the disc part 11 is completely wrapped by the rubber, and the contact area between the joint and the rubber is increased by the through hole 111 and the groove 112, so that the risk of degumming is reduced. One side of the M12 thread is connected with the motor shaft, one side of the M10 thread is connected with the water pump rotor, when the motor shaft rotates to drive the water pump rotor to move through the flexible transmission device, the water pump rotor can do rotating motion and eccentric motion along the inner surface of the stator, the eccentric motion of the water pump is offset by using the elasticity of rubber, and the motor shaft is kept to rotate along the same axis. Therefore, the technical problems that in a flexible transmission device between a motor shaft and a water pump rotor in the prior art, the contact area between a metal joint and rubber is small, the degumming risk is large, and the processing cost is high are solved.
In fig. 2 and 6, the surface of the periphery of the disk part 11, which is shown by a dotted line, is a contact surface for injecting glue to the flexible joint, sand blasting is completed within two hours before glue coating, the part needs to be cleaned and dried after sand blasting, and the surface roughness is greater than Rz40 after sand blasting.
In the figure, the rounding/chamfering R is not injected for 0.1-0.3/0.1-0.3x45 degrees.
The utility model discloses an use the scene, including but not limited to the flexible transmission connection between plastic motor shaft and the plastics water pump rotor.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
Claims (8)
1. A metal powder injection molding joint, comprising a disc portion and a connecting portion, wherein:
the connecting part is arranged in the center of the disc part, one end surface of the connecting part and the lower surface of the disc part are positioned on the same plane, and the other end surface of the connecting part protrudes out of the upper surface of the disc part;
the disc part circumference is provided with a plurality of through-holes that run through disc part upper and lower surface, the side of disc part is provided with a plurality of recesses.
2. The metal powder injection molding joint according to claim 1, wherein the through holes are uniformly arranged in the circumferential direction of the disk portion, the grooves are uniformly arranged in the side surface of the disk portion, and the through holes and the grooves are arranged at intervals.
3. The metal powder injection molding joint according to claim 2, wherein the number of the through holes is set to 8.
4. The metal powder injection molding joint according to claim 2, wherein the number of the grooves is set to 8.
5. The metal powder injection molding joint according to claim 1, wherein an inner surface of the connection portion is provided with a thread.
6. The metal powder injection molding joint according to claim 5, wherein an outer surface of the connection portion is provided with a catching surface.
7. A flexible driving device comprising an elastic sleeve body and the metal powder injection-molded joint as set forth in any one of claims 1 to 6, wherein: the two ends of the elastic sleeve body are respectively wrapped and bonded with the disk parts of the two metal powder injection molding joints, and the connecting parts protrude out of the end face of the elastic sleeve body.
8. The flexible drive of claim 7, wherein the threads of the connecting portion of one of the metal powder injection molded couplings are M12 and the threads of the connecting portion of the other of the metal powder injection molded couplings are M10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222114554.7U CN217842032U (en) | 2022-08-10 | 2022-08-10 | Metal powder injection molding joint and flexible transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222114554.7U CN217842032U (en) | 2022-08-10 | 2022-08-10 | Metal powder injection molding joint and flexible transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217842032U true CN217842032U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222114554.7U Active CN217842032U (en) | 2022-08-10 | 2022-08-10 | Metal powder injection molding joint and flexible transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217842032U (en) |
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2022
- 2022-08-10 CN CN202222114554.7U patent/CN217842032U/en active Active
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