Pressing framework and pressing disc body with same

Abstract

The utility model relates to a pressing framework and a pressing disc body with the same. The pressing framework comprises a disc-shaped framework disc body and a connecting rod arranged at the center of the back surface of the framework disc body, the framework disc body is constructed into an arch-shaped disc body of which the center of the lower end surface is higher than the edge of the disc body, and the lower end surface of the arch-shaped disc body is constructed into a conical surface or an arc surface; a plurality of convex ribs for pressing the edge of the pressure plate are constructed on the back surface of the framework plate body, the convex ribs are circumferentially arranged along the edge of the framework plate body, and the convex ribs are in an arc shape gradually deviating anticlockwise or clockwise from inside to outside. According to the scheme, the arc-shaped design on the surface of the convex rib radially extends relative to the convex rib, so that the span of the convex rib in the circumferential direction can be increased, the pressure area in the circumferential direction can be increased, the pressure of the pressure plate on the framework is increased, and the suction effect of the suction cup is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sucking disc technical field especially, it relates to a kind of pressing skeleton and the pressing disc body with the skeleton of pressing. BACKGROUND

[0002] Sucking disc is the household goods that is fixed on base surface by forming vacuum cavity by pressing to remove internal air, usually is attached on wall surface, cabinet surface etc. for hanging article. The disc body of a kind of sucking disc widely used now is made of skeleton rubber coating, and the connecting part, generally as connecting column, is provided on the disc body and connected with hook etc. The skeleton of the sucking disc supports and shapes the rubber coating thereon, and the skeleton can conduct stress to remove air in the rubber coating, while extruding the rubber coating of disc body to tightly adhere to base surface.

[0003] A sucking disc is disclosed in Chinese utility model patent CN205089777U, which comprises an elastic pressing disc body, a skeleton is arranged in the pressing disc body, a connecting rod is arranged at the back of the skeleton, a sucking disc cover is arranged on the connecting rod to press the pressing disc body, a pressing piece is arranged at the back of the sucking disc cover to press the back of the sucking disc cover and is connected with the connecting rod, a plurality of protruding ribs are arranged at the outermost side of the back of the skeleton, and the protruding ribs extend along the radial direction of the skeleton. The sucking disc has simple structure, high production efficiency and strong adsorption capacity.

[0004] In the above technical solution, the setting of the protruding ribs increases the pressure of the sucking disc cover on the skeleton, but the radial extension of the protruding ribs has limited effect on increasing the adsorption capacity of the sucking disc, and the setting of the opening groove on the skeleton makes the entire skeleton disc body form a plurality of bifurcated plates in the circumferential direction, and the protruding ribs are arranged on the bifurcated plates. When the sucking disc is used, the bifurcated plates are easily broken under extrusion.

[0005] In addition, the central region of the skeleton disc body has no support point to support the skeleton during injection molding, and the adhesion of the central region of the skeleton disc body to the rubber coating cannot be guaranteed after the rubber coating is completed, and the adhesion of the rubber coating to the skeleton cannot be improved. SUMMARY

[0006] To solve the above problems, the first purpose of the utility model is to provide a pressing skeleton, which can increase the pressure points on the back of the skeleton disc body, increase the pressure of the pressing disc on the skeleton disc body, greatly improve the adsorption effect of the sucking disc, improve the structural strength of the skeleton, and prolong the service life. In addition, the skeleton disc body is provided with a plurality of support points to improve the adhesion and adhesion of the skeleton disc body to the rubber coating. The second purpose of the utility model is to provide a pressing disc body with the above-mentioned pressing skeleton.

[0007] To achieve the above purposes, the utility model adopts the following technical solutions:

[0008] The application discloses a pressing skeleton, which comprises a skeleton disc body in a disc shape and a connecting rod arranged at the center of the back surface of the skeleton disc body; the skeleton disc body is constructed as an arched disc body with the lower end surface higher than the edge of the disc body, and the lower end surface of the arched disc body is constructed as a conical surface or a circular arc surface; characterized in that a plurality of convex ribs for pressing the edge of the pressing disc are arranged on the back surface of the skeleton disc body, the plurality of convex ribs are arranged in a circumferential direction along the edge of the skeleton disc body, and the convex ribs are in a circular arc shape gradually deviated to the counterclockwise or clockwise direction from the inside to the outside.

[0009] In the technical scheme, the skeleton disc body is in an arched disc body, a plurality of convex ribs for pressing the edge of the pressing disc are arranged on the back surface of the skeleton disc body, the plurality of convex ribs are arranged in a circumferential direction along the edge of the skeleton disc body, and the convex ribs are in a circular arc shape gradually deviated to the counterclockwise or clockwise direction from the inside to the outside. The circular arc design on the surface of the convex rib can increase the span of the convex rib in the circumferential direction, thereby increasing the pressure area in the circumferential direction, further increasing the pressure of the pressing disc on the skeleton, improving the adsorption effect of the adsorption disc, and uniformly supporting the periphery of the skeleton during injection molding.

[0010] Preferably, the skeleton disc body comprises a ring-shaped bearing area and a central ring area radially inside the ring-shaped bearing area, the plurality of convex ribs are arranged in a circumferential direction on the ring-shaped bearing area, and the convex ribs extend from the inner edge of the ring-shaped bearing area to the outer edge of the ring-shaped bearing area. In the technical scheme, the skeleton disc body comprises a ring-shaped bearing area and a central ring area, the convex ribs are arranged on the ring-shaped bearing area and extend from the inner edge of the ring-shaped bearing area to the outer edge of the ring-shaped bearing area, and effective extrusion of the ring-shaped bearing area can be formed; and the plurality of convex ribs are arranged in a circumferential direction, so that the ring-shaped bearing area is relatively easier to deform.

[0011] Preferably, a circumferentially-arranged ring-shaped buffer groove is arranged between the central ring area and the ring-shaped bearing area. In the technical scheme, the ring-shaped buffer groove serves as a transition area between the central ring area and the ring-shaped bearing area, so that the central ring area is easier to deform under the pressure of the connecting rod, and the user needs to exert less force, that is, the user is more labor-saving during use.

[0012] Preferably, the upper end surface of at least one convex rib is constructed as a first bonding groove concave to the back surface of the disc body, or the upper end surface of at least one convex rib is constructed as a first protrusion upward. In the technical scheme, the first bonding groove and the first protrusion are arranged to increase the surface area of the convex rib. During the gluing process, part of the glue is embedded in the first bonding groove or the glue covers the first protrusion, thereby increasing the bonding area between the convex rib and the glue, and further improving the bonding degree between the glue and the skeleton, especially the bonding degree in the radial direction.

[0013] Preferably, the outer edge of the annular bearing area is constructed as a circumferential continuous closure; deformation holes are arranged between adjacent ribs, and the deformation holes penetrate the upper and lower end faces of the annular bearing area. In this technical solution, the outer edge of the annular bearing area is constructed as a circumferential continuous closure, so that the entire annular bearing area forms a whole, and the structural strength is improved; and the deformation holes are arranged between adjacent ribs, so that the annular bearing area with a continuously closed outer edge is more easily deformed.

[0014] Preferably, the cross section of the deformation hole is a circular arc shape that is the same as the direction of the rib from inside to outside, and the outer side of the deformation hole is formed with a second bonding groove that communicates with the deformation hole. In this technical solution, the cross section of the deformation hole is a circular arc shape that is the same as the direction of the rib, and the deformation ability is improved, so that the annular bearing area is easily deformed. Since the outer edge of the annular bearing area is continuously closed, tension is applied at this location when the annular bearing area is deformed. The second bonding groove is arranged below this location and communicates with the deformation hole, so as to increase the bonding area between this location and the colloid, improve the bonding degree of the colloid and the annular bearing area, and reduce the influence of tension.

[0015] Preferably, a plurality of glue passing holes are arranged on the center ring area along the circumferential direction, the glue passing holes penetrate the upper and lower end faces of the center ring area, and the glue passing holes are constructed as linear holes extending in the radial direction. In this technical solution, the glue passing holes are constructed as linear holes extending in the radial direction. On the one hand, the linear holes can allow the glue to flow during the encapsulation injection molding, and can realize the connection of the upper and lower end faces of the elastic colloid after the completion of the encapsulation injection molding, thereby improving the bonding degree of the elastic colloid and the skeleton. On the other hand, the linear holes can also increase the deformability of the center ring area.

[0016] Preferably, a plurality of second protrusions capable of being exposed to the elastic glue layer or flush with the surface of the elastic glue layer are arranged on the upper end face of the center ring area along the circumferential direction; and / or a plurality of third protrusions capable of being flush with the surface of the elastic glue layer or covered inside the colloid are arranged on the lower end face of the center ring area along the circumferential direction. In this technical solution, the second protrusions, or the second protrusions and the third protrusions arranged at the same time, can increase the bonding strength between the elastic colloid and the skeleton disc. And the second protrusions are exposed to the elastic glue layer or flush with the surface of the elastic glue layer, which is used for uniformly supporting the center ring area in the mold, so as to avoid the inclination of the skeleton and cause the thickness of the colloid inside and back of the skeleton to be inconsistent.

[0017] Preferably, a boss is further arranged at the center of the skeleton disc, an upper connection table is arranged above the boss, the lower end of a connecting rod is connected to the center of the connection table, and the skeleton disc, the boss, the connection table and the connecting rod are integrally injection molded. In this technical solution, the skeleton disc, the boss, the connection table and the connecting rod are integrally injection molded, and the overall structural strength is high, so as to improve the service life of the skeleton.

[0018] The utility model provides a press plate body, including press skeleton and the elastic colloid of covering press skeleton on its features in, including the press skeleton of any one of above-mentioned, the elastic colloid covers the upper end surface and the upper end surface of skeleton plate body, and the lower end surface of elastic colloid constructs the arched adsorption cavity that is higher than the edge of plate body at the center, the convex rib is covered inside the elastic colloid or the upper end surface of convex rib is flush with the surface of elastic colloid, in the technical scheme, press plate body includes press skeleton and the elastic colloid of covering press skeleton outside, and the convex rib is covered inside the elastic colloid can greatly promote the adhesion degree between press skeleton and elastic colloid, if the upper end surface of convex rib is flush with the surface of elastic colloid, when rubber injection moulding, can play the even support effect to press skeleton, and still can promote the adhesion degree between certain press skeleton and elastic colloid. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the schematic diagram of the three -dimensional structure of first press skeleton.

[0020] Figure 2 It is the schematic diagram of the side structure of first press skeleton.

[0021] Figure 3 It is the schematic diagram of the overhead structure of first press skeleton.

[0022] Figure 4 It is the schematic diagram of the three -dimensional structure of another angle of first press skeleton.

[0023] Figure 5 It is the schematic diagram of the three -dimensional structure of press plate body with first press skeleton.

[0024] Figure 6 It is the schematic diagram of the three -dimensional structure of press plate body with another angle of first press skeleton.

[0025] Figure 7 It is the schematic diagram of the three -dimensional structure of second press skeleton.

[0026] Figure 8 It is the schematic diagram of the side structure of second press skeleton.

[0027] Figure 9 It is the schematic diagram of the overhead structure of second press skeleton.

[0028] Figure 10 It is the schematic diagram of the three -dimensional structure of another angle of second press skeleton.

[0029] Figure 11 It is the schematic diagram of the three -dimensional structure of press plate body with second press skeleton.

[0030] Figure 12 It is the schematic diagram of the three -dimensional structure of press plate body with another angle of second press skeleton.

[0031] Figure 13 is a perspective view of a third pressing skeleton.

[0032] Figure 14 is a side view of a third pressing skeleton.

[0033] Figure 15 is a top view of a third pressing skeleton.

[0034] Figure 16 is a perspective view of a third pressing skeleton from another angle.

[0035] Figure 17 is a perspective view of a pressing disc body with a third pressing skeleton.

[0036] Figure 18 is a perspective view of a pressing disc body with a third pressing skeleton from another angle.

[0037] Figure 19 is a perspective view of a fourth pressing skeleton.

[0038] Figure 20 is a side view of a fourth pressing skeleton.

[0039] Figure 21 is a top view of a fourth pressing skeleton.

[0040] Figure 22 is a perspective view of a fourth pressing skeleton from another angle.

[0041] Figure 23 is a perspective view of a pressing disc body with a fourth pressing skeleton.

[0042] Figure 24 is a perspective view of a pressing disc body with a fourth pressing skeleton from another angle. DETAILED DESCRIPTION

[0043] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0044] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0045] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0046] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature in the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature in the second feature include the vertical and inclined upward of the first feature above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature in the second feature include the vertical and inclined downward of the first feature below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. Embodiment one:

[0048] As Figures 1-4The four pressing skeletons shown in Figures 7-10, 13-16 and 19-22 include a skeleton disc body 1 in the shape of a disc, and a connecting rod 2 arranged at the center of the back of the skeleton disc body 1; the skeleton disc body 1 is constructed as an arched disc body with the lower end surface higher than the edge of the disc body, and the lower end surface of the arched disc body is constructed as a conical surface or a circular arc surface; a plurality of convex ribs 3 for pressing the edge of the pressing disc are arranged on the back of the skeleton disc body 1, and the plurality of convex ribs 3 are arranged circumferentially along the edge of the skeleton disc body 1, and the convex ribs 3 are in the shape of a circular arc gradually deviated to the counterclockwise or clockwise direction from the inside to the outside.

[0049] In the above technical solution, the skeleton disc body is in the shape of an arched disc body, and a plurality of convex ribs for pressing the edge of the pressing disc are arranged on the back of the skeleton disc body, and the plurality of convex ribs are arranged circumferentially along the edge of the skeleton disc body, and the convex ribs are in the shape of a circular arc gradually deviated to the counterclockwise or clockwise direction from the inside to the outside, and the circular arc design on the surface of the convex rib is arranged relatively radially to increase the span of the convex rib in the circumferential direction, so as to increase the pressure area in the circumferential direction, and further increase the pressure of the pressing disc on the skeleton, and improve the adsorption effect of the suction disc. In addition, the circular arc convex rib can uniformly support the periphery of the skeleton during injection molding.

[0050] Further, the skeleton disc body 1 includes an annular bearing area 4 and a central ring area 5 radially inside the annular bearing area 4, and the plurality of convex ribs 3 are circumferentially spaced apart on the annular bearing area 4, and the convex ribs 3 extend from the inner edge of the annular bearing area 4 to the outer edge of the annular bearing area 4. In the technical solution, the skeleton disc body includes an annular bearing area and a central ring area, and the convex ribs are arranged on the annular bearing area and extend from the inner edge of the annular bearing area to the outer edge of the annular bearing area, so as to form effective extrusion on the annular bearing area; and the plurality of convex ribs are circumferentially spaced apart, so that the annular bearing area is relatively easier to deform.

[0051] Further, a circumferentially arranged annular buffer groove 6 is arranged between the central ring area 5 and the annular bearing area 4. In the technical solution, the annular buffer groove serves as a transition area between the central ring area and the annular bearing area, so that the central ring area is easier to deform under the pressure of the connecting rod, and the user needs to exert less force, that is, it is more labor-saving when in use.

[0052] As shown in Figures 7-10 and 13-16, the upper end surface of at least one convex rib 3 is constructed with a first bonding groove 7 concave to the back of the disc body, and as shown in Figures 19-22 The upper end surface of at least one convex rib 3 is constructed with a first convex rib 8 upward. The arrangement of the first bonding groove and the first convex rib increases the surface area of the convex rib, and during the gluing process, part of the glue is embedded in the first bonding groove or the glue covers the first convex rib, which increases the bonding area between the convex rib and the glue, thereby further improving the adhesion between the glue and the skeleton, especially the adhesion in the radial direction.

[0053] Further, the outer edge of the annular force bearing area 4 is constructed as a circumferential continuous closure; deformation holes 9 are provided between adjacent ribs 3, and the deformation holes 9 penetrate the upper and lower end faces of the annular force bearing area 4. In this technical solution, the outer edge of the annular force bearing area is constructed as a circumferential continuous closure, so that the entire annular force bearing area forms a whole, and the structural strength is improved; and the deformation holes are provided between adjacent ribs, which makes it easier for the annular force bearing area with a continuously closed outer edge to deform.

[0054] Further, the cross section of the deformation hole 9 is a circular arc shape that is deviated in the same direction as the rib 3 from the inside to the outside, and the outer side of the deformation hole 9 is formed with a second bonding groove 10 that communicates with it. In this technical solution, the cross section of the deformation hole is a circular arc shape that is deviated in the same direction as the rib, and the deformation ability is improved, so that the annular force bearing area is easy to deform. Since the outer edge of the annular force bearing area is continuously closed, tension is generated at this location when the annular force bearing area deforms. The second bonding groove is provided below this location and communicates with the deformation hole, which increases the bonding area between this location and the colloid, improves the bonding degree of the colloid and the annular force bearing area, and reduces the influence of tension.

[0055] Further, a plurality of glue passing holes 11 are arranged on the center ring area 5 along the circumferential direction, the glue passing holes 11 penetrate the upper and lower end faces of the center ring area 5, and the glue passing holes 11 are constructed as linear holes that extend in the radial direction. In this technical solution, the glue passing holes are constructed as linear holes that extend in the radial direction. On the one hand, the linear holes can allow the glue to flow during the glue injection molding, and can realize the connection of the upper and lower end faces of the elastic colloid after the glue injection molding is completed, thereby improving the bonding degree of the elastic colloid and the skeleton. On the other hand, the linear holes can also increase the deformability of the center ring area.

[0056] As shown in Figs. Figures 1-4 7-10, 13-16 and 19-22, a plurality of second protrusions 12 capable of being exposed to the elastic glue layer or flush with the surface of the elastic glue layer are arranged on the upper end face of the center ring area 5 along the circumferential direction. As shown in Fig. Figures 19-22 , a third protrusion 13 capable of being flush with the surface of the elastic glue layer or covered inside the colloid is arranged on the lower end face of the center ring area 5. The second protrusion in the above description, or the second protrusion and the third protrusion are arranged at the same time, can increase the bonding strength between the elastic colloid and the skeleton disc body. And the second protrusion is exposed to the elastic glue layer or flush with the surface of the elastic glue layer, which is used to uniformly support the center ring area in the mold, so as to avoid the inclination of the skeleton, which causes the thickness of the colloid inside and back of the skeleton to be inconsistent.

[0057] Further, the skeleton disc body 1 is further provided with a boss 14 at the center, and a connecting table 15 is arranged above the boss 14, and the lower end of the connecting rod 2 is connected to the center of the connecting table 15, and the skeleton disc body 1, the boss 14, the connecting table 15 and the connecting rod 2 are integrally injection molded. In the technical scheme, the skeleton disc body, the boss, the connecting table and the connecting rod are integrally injection molded, the overall structural strength is high, and the service life of the skeleton can be improved. Embodiment two:

[0058] As shown in the four pressing disc bodies shown in Figures 5-6 , 11-12, 17-18 and 23-24, which respectively include Figures 1-4 , 7-10, 13-16 and 19-22, and the elastic body 200 covering the skeletons; the elastic body 200 covers the upper end surface of the skeleton disc body 1, and the lower end surface of the elastic body 200 is constructed into an arched adsorption cavity 16 which is higher at the center than at the edge of the disc body; as shown in Figures 5-6 , 11-12, 17-18 and 23-24, the upper end surface of the convex rib 3 is flush with the surface of the elastic body 200, which can uniformly support the pressing skeleton during the glue injection molding, and can also improve the adhesion between the pressing skeleton and the elastic body. As shown in Figures 23-24 , the convex rib 3 is covered inside the elastic body 200, which greatly improves the adhesion between the pressing skeleton and the elastic body,

[0059] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above embodiments without departing from the principles and purposes of the present application within the scope of the present application.

Claims

1. A pressing skeleton, comprising a skeleton disc (1) in the shape of a disc, and a connecting rod (2) arranged at the center of the back of the skeleton disc (1); the skeleton disc (1) is constructed as an arched disc with the lower end face higher than the edge of the disc, and the lower end face of the arched disc is constructed as a conical face or a circular arc face; characterized in that: The back of the skeleton disc body (1) is provided with a plurality of ribs (3) for pressing the edge of the pressing disc, which are arranged circumferentially along the edge of the skeleton disc body (1), and the ribs (3) are in the shape of a circular arc gradually deviated to the counterclockwise or clockwise direction from the inside to the outside.

2. The push frame according to claim 1, wherein: The skeleton disc body (1) comprises an annular bearing area (4) and a central ring area (5) radially inside the annular bearing area (4), and the plurality of ribs (3) are circumferentially spaced on the annular bearing area (4), and the ribs (3) extend from the inner edge of the annular bearing area (4) to the outer edge of the annular bearing area (4).

3. The push frame according to claim 2, wherein: The central ring area (5) and the annular bearing area (4) are provided with circumferentially arranged annular buffer grooves (6).

4. The push frame according to claim 2, wherein: The upper end surface of at least one rib (3) is provided with a first bonding groove (7) recessed downward to the back of the disc, or the upper end surface of at least one rib (3) is provided with a first protrusion (8) upward.

5. The push frame of claim 2, wherein: The outer edge of the annular bearing area (4) is constructed to be circumferentially continuous and closed; deformation holes (9) are provided between adjacent ribs (3), and the deformation holes (9) penetrate the upper and lower end surfaces of the annular bearing area (4).

6. The push frame according to claim 5, wherein: The cross section of the deformation hole (9) is in the shape of a circular arc deviated to the same direction as the rib (3) from the inside to the outside, and the outside of the deformation hole (9) is formed with a second bonding groove (10) communicating therewith.

7. The push frame of claim 2, wherein: A plurality of glue passing holes (11) are circumferentially spaced on the central ring area (5), which penetrate the upper and lower end surfaces of the central ring area (5), and the glue passing holes (11) are constructed as linear holes extending in the radial direction.

8. The push frame of claim 2, wherein: A plurality of second protrusions (12) capable of being exposed to or flush with the surface of the elastic glue layer are circumferentially spaced on the upper end surface of the central ring area (5); and / or a plurality of third protrusions (13) capable of being flush with or covered inside the glue layer are circumferentially spaced on the lower end surface of the central ring area (5).

9. The push frame of claim 1, wherein: A boss (14) is further provided at the center of the skeleton disc body (1), a connecting platform (15) is provided above the boss (14), and the lower end of the connecting rod (2) is connected to the center of the connecting platform (15), and the skeleton disc body (1), the boss (14), the connecting platform (15) and the connecting rod (2) are integrally injection molded.

10. A pressing disc body, comprising a pressing skeleton (100) and an elastic glue (200) covering the pressing skeleton (100), characterized in that: A pressing skeleton according to any one of claims 1-9 is included; the elastic glue body (200) covers the upper end surface of the skeleton disc body (1), and the lower end surface of the elastic glue body (200) is constructed as an arched suction cavity (16) with the center higher than the edge of the disc; the ribs (3) are covered inside the elastic glue body (200) or the upper end surface of the ribs (3) is flush with the surface of the elastic glue body (200).

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