CN217747719U

CN217747719U - Injection molding type connecting mechanism

Info

Publication number: CN217747719U
Application number: CN202221547572.8U
Authority: CN
Inventors: 肖云
Original assignee: Qingdao Hanbai Plastic Technology Co ltd
Current assignee: Qingdao Hanbai Plastic Technology Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-11-08
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses an injection molding type connecting mechanism, wherein the upper edge of a sealing element connecting piece is extended outwards in the circumferential direction, a side wall with uniform wall thickness is arranged on the part extended in the circumferential direction, the upper edge of the side wall is extended outwards in the circumferential direction, and the circumferential extension width of the upper edge of the sealing element connecting piece and the circumferential extension width of the upper edge of the side wall are both larger than the wall thickness of the side wall; the seal attachment upper edge, side wall and side wall upper edge form a portion for attachment of a supply cup. Its specific structure form that adopts a dicyclo shape lateral wall has thoroughly avoided the circular deformation problem of connecting supply cup part among the process of moulding plastics, has guaranteed that it can closely combine with supply cup mouth portion, goes up the anchor ring moreover and is greater than this specific mode of thickness of lateral wall with the width of anchor ring down, forms the depressed part in the lateral wall outside all the time, has increased substantially its intensity of connecting supply cup part, the utility model discloses the cost of product is one fiftieth to one fortieth of coupling mechanism cost of metal preparation.

Description

Injection molding type connecting mechanism

Technical Field

The utility model relates to a spray gun and the field of being connected of supply cup especially relate to a formula of moulding plastics coupling mechanism for connecting spray gun and supply cup.

Background

In conventional paint spray guns, the gun body is connected to a paint container or other material supply cup, typically by providing a fixed connection to the gun body, which cannot be used for appropriate operation when the adapter of the supply cup is changed. Therefore, various types of split-type connecting mechanisms for expanding the connection of the supply cup appear, and the connecting mechanisms made of metal and the connecting mechanisms made of plastic are mainstream in the market at present. The metallic connection requires machining, in particular when machining the connection adapted to the supply cup, an electric spark for the discharge operation, for example, in order to adapt the patent names: the spray gun comprises a storage cover, a spray gun storage connecting mechanism and a storage; the patent numbers are: 5363 the spray cup connection mechanism disclosed in the chinese utility model patent of 202120757691.5 requires continuous discharge operation on a metal connection structure, which is expensive to manufacture. And the connecting mechanism is made of metal, and the spraying cup is made of plastic, so when the connecting mechanism and the spraying cup are combined, the mouth of the spraying cup is easily damaged, and the service life of the spraying cup is shortened. With the development of the technology, an injection molding connecting mechanism appears in the market, but in the injection molding production process, the circular shape matched with the nozzle of the spray cup has a time difference in cooling of the inner wall and the outer wall due to the large thickness, so that the circular shape is oval, and the sealing between the circular shape and the nozzle of the spray cup is not tight. And the reduction of the wall thickness of the round part easily causes the outer wall to be too thin, greatly reduces the strength of the round part, and the connecting mechanism made of plastics is easy to break in the screwing process.

Accordingly, the prior art is subject to further improvement and development.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, the utility model aims at providing a formula of moulding plastics coupling mechanism for connecting spray gun and supply cup thoroughly solves the deformation problem of the part of connecting the supply cup among the process of moulding plastics.

In order to solve the technical problem, the utility model discloses the scheme includes:

an injection molding type connecting mechanism for connecting a spray gun and a supply cup comprises a sealing connecting piece forming a fluid communication channel between the supply cup and the spray gun, wherein the upper edge of the sealing connecting piece extends outwards in a circumferential direction, a side wall with uniform wall thickness is arranged on the part extending in the circumferential direction, the upper edge of the side wall extends outwards in the circumferential direction, and the widths of the upper edge of the sealing connecting piece and the circumferential extension of the upper edge of the side wall are both larger than the wall thickness of the side wall; the upper edge of the sealing member connecting piece, the side wall and the upper edge of the side wall form a part for connecting the supply cup.

The injection molding type connecting mechanism is characterized in that the side wall is provided with at least one opening, and the side wall corresponding to the opening is provided with a locking part matched with the supply cup.

The injection molding type connecting mechanism is characterized in that the side wall is provided with two openings, and the two openings are arranged on the side wall in an axisymmetric mode.

The injection molding type connecting mechanism is characterized in that the locking part is a protrusion on the inner side of the upper edge of the side wall, the surface of the protrusion facing the upper edge of the sealing element connecting piece is a spiral wedge-shaped surface, an inclined surface or a straight surface, and the length of the locking part is the same as that of the opening.

The injection molding type connecting mechanism is characterized in that the upper surface extending in the circumferential direction outwards along the upper edge of the sealing element connecting piece, the outer wall surface of the side wall and the lower surface extending in the circumferential direction outwards along the upper edge of the side wall form a concave structure, and a plurality of reinforcing ribs are uniformly arranged in the concave structure.

The injection molding type connecting mechanism is characterized in that at least one through hole is formed in the upper edge of the side wall, and the through hole is used for screwing the connecting mechanism through a corresponding tool.

The injection molding type connecting mechanism is characterized in that the circumference of the upper edge of the side wall is provided with two through holes, and the two through holes are positioned on the same straight line; the two through openings form a through groove.

The injection molding type connecting mechanism is characterized in that the straight lines of the two through openings coincide with the diameter of the circumference.

The injection molding type connecting mechanism is characterized in that the sealing connecting piece is provided with a mechanical connecting feature matched with the spray gun, and the mechanical connecting feature is a thread or a spiral wedge element.

The injection molding type connecting mechanism is formed by injection molding and integration; the thickness of the sealing element connecting piece extending outwards in the circumferential direction and the thickness of the side wall extending outwards in the circumferential direction are the same as the thickness of the side wall.

The utility model provides a pair of a formula coupling mechanism moulds plastics for connecting spray gun and supply cup, its specific structure form that adopts a dicyclo shape lateral wall has realized even wall thickness, has thoroughly avoided the circular deformation problem of the in-process connection supply cup part of moulding plastics, has guaranteed that it can closely combine with supply cup mouth portion, goes up the width of anchor ring and anchor ring down in addition and is greater than this specific mode of thickness of lateral wall, forms the depressed part in the lateral wall outside all the time, has increased substantially its intensity of connecting supply cup part, and especially the cost of the product that adopts the one shot forming of moulding plastics is extremely low, the utility model discloses the cost of product is one fiftieth to one fortieth of the coupling mechanism cost of metal making.

Drawings

FIG. 1 is a schematic view of an injection molded coupling mechanism of the present invention;

FIG. 2 is a schematic view of another embodiment of an injection molded coupling mechanism of the present invention;

FIG. 3 is a schematic view of a third embodiment of an injection molded coupling mechanism according to the present invention;

fig. 4 is a schematic structural view of the locking part in fig. 3.

Detailed Description

The utility model provides a formula of moulding plastics coupling mechanism for connecting spray gun and supply cup, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and is following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides a formula coupling mechanism of moulding plastics for connecting spray gun and supply cup, as shown in figure 1, it includes the sealing connection spare 2 that forms fluid circulation passageway 1 between supply cup and spray gun, wherein, the last edge of this sealing connection spare 2 outwards is circumference extension, form first anchor ring 3, the part that this circumference extends, be provided with the even lateral wall 4 of wall thickness on the first anchor ring 3 promptly, the last edge of this lateral wall 4 outwards is circumference extension, form second anchor ring 5, the circumference extension width that the last edge of this sealing connection 2 and lateral wall 4 go up edge all is greater than the wall thickness of lateral wall 4, namely the width of first anchor ring 3, second anchor ring 5 is greater than the thickness of lateral wall 4, form the structure of "concave" word in the outside of lateral wall 4; and this sealing member connecting piece 2 goes up along, lateral wall 4 and lateral wall 4 goes up along forming the part that is used for connecting the supply cup, the part can be the buckle, or directly utilize the structure of "concave" word that first anchor ring 3, second anchor ring 5 formed to carry out the joint, perhaps set up the wedge in first anchor ring 3 orientation setting second anchor ring 5 direction, structure about concrete locking, can go up along, first anchor ring 3, second anchor ring 5 on lateral wall 4 and carry out corresponding setting, for example, the specific connected mode that the patent name is push-button lock fluid connector of handheld spray gun, the chinese utility model patent publication of patent No. 201780006903.2 also can be applied to the utility model discloses a concrete connected mode. The connection process mainly needs to be matched with the mouth of the supply cup, and appropriate deformation can be carried out, so that the detailed description is omitted. And the thickness that the above-mentioned seal connecting piece 2 goes up to outwards be the circumference and extends, the thickness that the lateral wall 4 goes up to outwards be the circumference is the same with the thickness of lateral wall 4, that is to say the thickness of first anchor ring 3, second anchor ring 5 and lateral wall 4 is the same, and the outermost edge of first anchor ring 3 and second anchor ring 5 is located same cylinder, and the stress reaction that has further reduced the injection molding is, has avoided the appearance of the deformation condition in its injection molding process.

Furthermore, as shown in fig. 2, the above-mentioned side wall 4 is provided with at least one opening 6, and the side wall 4 corresponding to the opening 6 is provided with a locking portion 7 adapted to the supply cup, for example, in order to match the patent name: the spray gun comprises a storage cover, a spray gun storage connecting mechanism and a storage; the patent numbers are: 202120757691.5, the locking portion 7 of the spray cup connection mechanism disclosed in the utility model needs to be disposed on the inner side of the sidewall 4, and if a metal part is manufactured, a complex operation process is required, so that the manufacturing cost is greatly increased. When the injection molding process is adopted, the opening 6 can be smoothly demoulded, and the shape of the locking part 7 can be ensured not to be deformed. The locking part 7 and the mouth of the supply cup are made of plastic, so that the combination is smoother, and the situation of contusion is avoided.

Furthermore, as shown in fig. 3, this embodiment is the best embodiment, and has two symmetrically arranged locking portions 7 and corresponding through openings, so that the operation is more convenient for the user. Specifically, the method comprises the following steps: the side wall 4 is provided with two openings 6, the two openings 6 are arranged on the side wall 4 in an axisymmetric manner, and a locking part 7 is arranged at each corresponding opening 6. As shown in fig. 4, the locking portion 7 is a protrusion on the inner side of the upper edge of the sidewall 4, the surface of the protrusion facing the upper edge of the sealing member connector 2 is a spiral wedge-shaped surface, the length of the locking portion 7 is the same as the length of the opening 6, the mouth of the supply cup can be screwed more and more tightly through the spiral wedge-shaped surface, and a stopping vertical piece 12 can be further arranged at the end of the spiral wedge-shaped surface to prevent the mouth of the supply cup from being screwed too much and falling off from the locking portion 7, and the stopping vertical piece 12 is formed in many ways, such as a straight line type, an arc type, and the like, which is not described herein again. And the surface of the projection facing the upper edge of the seal attachment 2 may also be a beveled surface or a straight surface, although other forms are possible.

Furthermore, as shown in fig. 1 and 3, the upper surface of the sealing member connector 2 extending in the circumferential direction outwards, the outer wall surface of the side wall 4 and the lower surface of the side wall 4 extending in the circumferential direction outwards form a "concave" structure 8, and a plurality of reinforcing ribs 9 are uniformly arranged in the "concave" structure 8. The "concave" structure 8, formed by the first annular surface 3, the second annular surface 5 and the outer wall surface of the side wall 4, is stable and increases the strength of the portion for connecting the supply cup, so as to ensure that the user does not break during screwing.

As shown in fig. 3, the side wall 4 is provided with at least one through opening 10 along the upper edge thereof, and the through opening 10 is used for screwing the connecting mechanism by a corresponding tool. Two through openings 10 are arranged on the circumference of the upper edge of the side wall 4, and the two through openings 10 are positioned on the same straight line; the two through holes 10 form a through groove, and the straight line of the two through holes 10 coincides with the diameter of the circumference. That is to say, spanner or iron sheet card for the car are gone into in above-mentioned logical groove, have reduced the wearing and tearing to the connecting piece in the operation process to, through the opening part of two through holes 10 as the strong point, and then realized the purpose of lever, can make the operator more convenient revolve the screwed connection piece.

As shown in fig. 3, the sealing connector 2 is provided with a mechanical connection feature 11 adapted to the spray gun, the mechanical connection feature 11 is a thread or a spiral wedge element, and the connection mechanism of the present invention is formed integrally by injection molding. The mechanical connection features 11 in the above embodiments are all represented by means of helical wedge elements, but they need to be determined according to the connection of the lance and are not listed here.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. An injection molding type connecting mechanism for connecting a spray gun and a supply cup, which comprises a sealing connecting piece forming a fluid communication channel between the supply cup and the spray gun, and is characterized in that the upper edge of the sealing connecting piece extends outwards in a circumferential direction, a side wall with uniform wall thickness is arranged on the circumferentially extending part, the upper edge of the side wall extends outwards in the circumferential direction, and the widths of the upper edge of the sealing connecting piece and the circumferential extension of the upper edge of the side wall are both greater than the wall thickness of the side wall; the seal attachment upper edge, side wall and side wall upper edge form a portion for attachment of a supply cup.

2. An injection moulded coupling according to claim 1, wherein the side wall is provided with at least one opening, the side wall corresponding to the opening being provided with a locking portion adapted to the supply cup.

3. An injection-moulded connection according to claim 2, wherein the side wall is provided with two openings arranged in an axisymmetric manner in the side wall.

4. An injection moulded coupling according to claim 2, wherein the locking portion is a projection on the inside of the upper edge of the side wall, the face of the projection facing the upper edge of the seal connection member being a helical wedge face, a ramp or a straight face, the length of the locking portion being the same as the length of the opening.

5. An injection moulded coupling mechanism as claimed in claim 1 wherein the upper surface of the sealing member coupling which extends circumferentially outwardly, the outer wall surface of the side wall and the lower surface of the side wall which extends circumferentially outwardly form a "concave" structure in which a plurality of reinforcing ribs are uniformly disposed.

6. An injection-moulded connection according to claim 1, wherein the side wall is provided with at least one through-opening along its upper edge, which through-opening is intended for screwing the connection by means of a corresponding tool.

7. An injection-molded connecting mechanism according to claim 6, wherein two of said through-openings are provided on the circumference of the upper edge of said side wall, said through-openings being located on the same straight line; the two through openings form a through groove.

8. An injection moulded coupling according to claim 7, wherein the line of the two through openings coincides with the diameter of the circumference.

9. An injection moulded coupling according to claim 1, wherein the sealing coupling is provided with a mechanical coupling feature adapted to the spray gun, the mechanical coupling feature being a threaded or helical wedge element.

10. An injection moulded link as claimed in any one of claims 1 to 9 wherein the link is injection moulded in one piece; the thickness of the sealing element connecting piece extending outwards in the circumferential direction and the thickness of the side wall extending outwards in the circumferential direction are the same as the thickness of the side wall.