Vacuum chuck

Abstract

The utility model discloses a vacuum chuck which comprises an elastic chuck body and a framework arranged in the elastic chuck body, and is characterized in that a plurality of separation seams are arranged on the outer edge of the framework, a connecting rod is arranged in the middle of the framework, and the outer edge of the framework is divided into a plurality of pressing pieces by the separation seams; a plurality of strip-shaped seams are formed in the framework and located between the outer side of the connecting rod and the pressing piece, and the strip-shaped seams are annularly arrayed on the periphery of the connecting rod. The suction cup cover covers the elastic disc body, a through hole is formed in the center of the suction cup cover, the connecting rod penetrates through the through hole to be connected with an extrusion assembly, and the extrusion assembly applies pressure to the elastic disc body through the suction cup cover so that the elastic disc body can be pulled upwards along with the framework to form a vacuum cavity to be adsorbed to the base face. The vacuum chuck is simple in overall structure, convenient to use, stable and reliable in adsorption and long in adsorption time.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a vacuum suction cup. Background Art

[0002] Suction cups are often used in people's daily life. They are easy to use and can be widely used because they only need to be pressed on the base surface such as the wall or the surface of an object without drilling the wall or drilling holes. Suction cups are household items that are directly fixed on the base surface by exhausting the internal air to form a vacuum cavity and using the internal and external pressure difference. They are usually adsorbed on walls, cabinets, etc. for hanging objects. They are easy to fix and flexible to move. Most of the current suction cups are vacuum adsorption structures. The suction cup is in a bowl shape as a whole. A disc body made of flexible materials such as soft glue is provided on the suction cup. The disc body is pressed tightly against the base surface or the surface of the object. The suction cup is pressed to flatten and deform the disc body and stick it to the base surface to discharge the air between the disc body and the base surface. The disc body recovers the deformation and bulges upward to form a vacuum cavity. Then, the bottom edge of the disc body fits with the base surface to seal the vacuum cavity, that is, it can generate adsorption force under the action of external air pressure to fix it on the wall or the surface of the object. However, the operation of pressing to exhaust is more troublesome, and the force and angle of pressing to exhaust are different, resulting in unequal amounts of exhausted gas, making it difficult to ensure that the suction cup has a stable and reliable adsorption force. At the same time, in order to improve the suction force of the suction cup, the suction cup will generally wrap an elastic colloid on the frame, but the arched frame is difficult to deform elastically. If it is pressed forcefully, it will easily break the frame and lose its function. Therefore, a separation seam extending from the outer edge to its center is opened on the frame, which results in poor overall elasticity of the frame, which is not conducive to the elastic recovery of the frame, and thus affects the suction capacity of the suction cup. Utility Model Content

[0003] The utility model aims to provide a vacuum suction cup, which has a simple overall structure, is easy to use, has stable and reliable adsorption and a long adsorption time.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A vacuum suction cup comprises an elastic disc body, in which a frame is arranged, a plurality of separation slits are arranged on the outer edge of the frame and a connecting rod is arranged in the middle, the separation slits divide the outer edge of the frame into a plurality of pressing plates, a plurality of strip slits are arranged on the frame and between the outer side of the connecting rod and the pressing plates, and the strip slits are arranged in a circular array around the connecting rod; it also comprises a suction cup cover, which covers the elastic disc body, a through hole is arranged in the center of the suction cup cover, the connecting rod is connected to an extrusion assembly through the through hole, and the extrusion assembly forms a vacuum cavity in the middle of the elastic disc body by lifting the connecting rod and pressing the suction cup cover so that the vacuum cavity is adsorbed on a base surface.

[0006] Preferably, the skeleton is also provided with a reinforcing portion, which protrudes from the elastic disc body; the reinforcing portion is a convex ring surrounding the connecting rod, which is arranged between the connecting rod and the strip seam and blocked between the elastic disc body and the connecting rod; or the reinforcing portion is a support platform arranged at the bottom of the connecting rod.

[0007] Preferably, the frame is a flat frame, each pressing sheet is provided with at least one closed hole, and a gap is provided between the closed hole, the separation slit and the strip slit; the closed hole, the separation slit and the strip slit are arc-shaped with the same rotation direction.

[0008] Preferably, a plurality of protrusions in an annular array are further provided on the skeleton, and the protrusions are arc-shaped and are consistent with the rotation direction of the separation slit.

[0009] Preferably, the connecting rod, the skeleton and the reinforcing part are integrally formed; and the thickness of the elastic disc body is 1-10 mm.

[0010] Preferably, the thickness of the elastic disc body is 3-8 mm, and the adsorption surface of the elastic disc body is a plane; the elastic disc body is a viscose elastic disc body formed on the skeleton, and before the suction cup cover squeezes the elastic disc body, the viscose elastic disc body can stick the vacuum suction cup to the base surface through adhesion force.

[0011] Preferably, the edge of the suction cup cover forms a first pressure ring, which presses against the edge of the back side of the elastic disc body and supports a cavity formed between the suction cup cover and the elastic disc body. A second pressure ring is arranged in the cavity, and the spacing between the second pressure ring and the first pressure ring is 1-10mm.

[0012] Preferably, a spring is sleeved on the connecting rod, one end of the spring abuts against the suction cup cover and the other end abuts against the elastic disc body or the frame.

[0013] Preferably, the spring is conical and the large end of the spring is located in the convex ring or on the support platform.

[0014] Preferably, the extrusion assembly includes an axle pin and a sliding button, and guide slides are arranged in parallel on two opposite sides of the sliding button, and the guide slides are arranged obliquely relative to the sliding direction of the sliding button; an axle hole is provided on the side of the connecting rod away from the elastic disc body, the axle pin passes through the axle hole and both ends are inserted into the guide slides; the sliding button slides on the suction cup cover.

[0015] Preferably, guide edges are provided on both sides of the sliding button corresponding to the guide slideway, and the suction cup cover is provided with a guide groove that cooperates with the guide edges.

[0016] Preferably, a positioning portion is formed at the end of the guide slideway for fixing the shaft pin at the end of the guide slideway.

[0017] Preferably, the extrusion assembly includes an axial pin and a lifting and pressing part, an extrusion plate is arranged parallel to the lifting and pressing part, a mounting hole is arranged on the extrusion plate, an axial hole is arranged on the side of the connecting rod away from the elastic disc body, the axial pin passes through the axial hole and both ends are inserted and fixed in the mounting hole; the lifting and pressing part rotates around the axial pin on the suction cup cover to tighten or loosen the suction cup.

[0018] Preferably, the two edges of the extrusion plate in contact with the suction cup cover are respectively a first edge and a second edge, the distance from the mounting hole to the first edge is greater than the distance from the mounting hole to the second edge, and there is a smooth transition between the first edge and the second edge.

[0019] Preferably, a relief position is provided on a side of the suction cup cover away from the elastic disc body, and the shape of the lifting and pressing part matches the relief position; the position where the lifting and pressing part rotates in contact with the suction cup cover is set to be arc-shaped.

[0020] Preferably, the extrusion assembly includes an adjusting ring and an axle pin, the adjusting ring is provided with a through hole at the position corresponding to the through hole, two guide slopes are symmetrically provided on the edge of the through hole, and one end of the guide slope is inclined toward the elastic disc body; the connecting rod is provided with an axle hole on the side away from the elastic disc body, the axle pin passes through the axle hole and both ends rest on the guide slopes.

[0021] Preferably, a limiting protrusion is provided between the two guiding inclined surfaces; two positioning shafts are provided on the suction cup cover, and a sliding groove cooperating with the positioning shafts is provided on the adjusting ring.

[0022] Preferably, a cover plate is further included, which is fixedly connected to the middle part of the adjustment ring; a connecting column is provided on the cover plate, and the connecting column is inserted and fixed in the positioning shaft.

[0023] Preferably, a positioning boss is provided on one side of the suction cup cover close to the adjustment ring, a support surface is provided around the positioning boss, the outer diameter of the positioning boss matches the inner diameter of the adjustment ring and the side wall of the adjustment ring rests on the support surface; a convex ridge is provided on the outer side wall of the adjustment ring.

[0024] Preferably, a fixing surface is provided at the end of the guiding inclined surface, and the fixing surface fixes the shaft pin to the end of the guiding inclined surface.

[0025] Preferably, the extrusion assembly comprises a screw cap, a sleeve is provided on the inner side of the screw cap, an internal thread is provided in the sleeve, and an external thread matching the internal thread is provided on the connecting rod.

[0026] Preferably, a positioning boss is provided on one side of the suction cup cover close to the screw cap, a supporting surface is provided around the positioning boss, the outer diameter of the positioning boss matches the inner diameter of the screw cap and the side wall of the screw cap rests on the supporting surface; a convex ridge is provided on the outer wall of the screw cap.

[0027] In the above technical solution, the secondary molding of the elastic disc body on the skeleton ensures the connectivity between the elastic disc body and the skeleton, so that the skeleton and the elastic disc body have an integrated molding effect, so that when the skeleton drives the elastic disc body to be pulled upward, it has a better supporting effect on the elastic disc body, preventing the elastic disc body from detaching from the skeleton, so that a vacuum cavity can be formed more stably. At the same time, a closed hole is provided on the skeleton, and the elastic disc body is inserted into the closed hole and wrapped on the skeleton, further increasing the connection relationship between the skeleton and the elastic disc body. The skeleton is a flat skeleton, and the adsorption surface of the elastic disc body is a plane, so that the suction cup has a flat adsorption surface, and then the suction cup and the base surface are tightly fitted to completely evacuate the air between the suction cup and the base surface, so that when the suction cup is pulled to form a vacuum cavity, no air will be mixed into the vacuum cavity, thereby improving the adsorption force of the suction cup.

[0028] The elastic disc body is a viscose elastic disc body. The viscosity of the viscose disc body surface enables the disc body surface to have the ability to fill the microscopic bumps on the base surface. The disc body surface can be embedded in the microscopic depressions on the base surface, or wrap the tiny protrusions on the base surface, so that the base surface and the disc body surface are integrated to achieve contact without small gaps, so that after the disc cover squeezes the elastic disc body, it can well block the outside air from slowly penetrating into the disc body from the contact point of the disc body base surface. A separation seam is provided on the skeleton to provide deformation space for the skeleton to shrink and move closer to the center. At the same time, each separation seam is in the shape of an arc with the same arc, and the whole is uniform. When the skeleton is pulled, the pressing sheet is also pulled up and a rotation trend along the arc line is generated at the same time, which has a tendency to rotate, shrink and press down on the elastic disc body wrapped outside the skeleton, so that the disc body and the base surface fit more closely, and the vacuum cavity formed inside the elastic disc body has better sealing, and finally the vacuum suction cup is less likely to fall off. At the same time, the separation seam divides the outer edge of the skeleton into several pressing sheets, so that when there are convex points on the base surface, only the pressing sheets corresponding to the convex points on the skeleton are deformed, and the pressing sheets adjacent to this pressing sheet can still be flatly adsorbed on the base surface without causing the entire skeleton to warp at the position of the convex points, thereby further ensuring the adsorption effect of the suction cup.

[0029] A convex ring is provided around the connecting rod or a support platform is provided at the bottom of the connecting rod. The convex ring blocks the elastic disc body and the connecting rod and protrudes from the elastic disc body, which can not only facilitate the injection molding of the elastic disc body but also save manufacturing materials and reduce costs. At the same time, there is a certain distance between the edge of the elastic disc body and the connecting column. The elastic disc body will not hinder the skeleton from being pulled upward with the connecting rod as the center. Moreover, when the skeleton is pulled upward, the elastic disc body is more convenient to extend to the outer edge of the skeleton due to inertia, so that the elastic disc body can be better fitted on the base surface, so that the suction cup has a stronger adsorption capacity. At the same time, when the skeleton is pulled upward, the pulling force of the connecting rod is first transmitted to the convex ring or the support platform, and the convex ring or the support platform evenly transmits the pulling force to the surroundings of the skeleton, so that each part of the elastic disc body in contact with the base surface has the same adsorption force, and avoids the vacuum chamber leaking due to uneven force around the suction cup, which affects the adsorption capacity of the suction cup.

[0030] The edge of the suction cup cover is pressed against the edge of the elastic disc body, and a squeezing assembly is provided on the suction cup cover. The squeezing assembly changes the protruding height of the connecting rod relative to the suction cup cover by rotating or pulling, and at the same time forms a downward pressure on the top of the suction cup cover, so that the middle part of the body is lifted up as the connecting rod is pulled out and the edge is squeezed and fitted to the base surface by the suction cup cover, so that a vacuum cavity can be formed in the middle part of the body so that the suction cup is adsorbed on the base surface. The overall structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the three-dimensional structure of the vacuum suction cup;

[0032] Figure 2 Schematic diagram of the body and frame of the vacuum suction cup;

[0033] Figure 3 Schematic diagram of the three-dimensional structure of the vacuum suction cup skeleton;

[0034] Figure 4 This is a schematic diagram of another three-dimensional structure of the vacuum suction cup skeleton;

[0035] Figure 5 It is a cross-sectional view of the plate body and the frame of the vacuum suction cup;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the vacuum suction cup cover;

[0037] Figure 7 This is a schematic diagram of the structure of the vacuum suction cup in an exploded state;

[0038] Figure 8 This is a three-dimensional schematic diagram of the vacuum suction cup in a disassembled state from another perspective;

[0039] Fig. 9 is a cross-sectional view of the vacuum chuck;

[0040] Fig.10 This is a schematic diagram of the three-dimensional structure of the second embodiment of the vacuum suction cup;

[0041] Fig.11 This is a schematic diagram of the structure of the second embodiment of the vacuum chuck in an exploded state;

[0042] Fig.12 This is a schematic diagram of the structure of the third embodiment of the vacuum chuck in an exploded state;

[0043] Fig.13 This is a schematic diagram of the three-dimensional structure of the fourth embodiment of the vacuum suction cup;

[0044] Fig.14 This is a schematic diagram of the structure of the fourth embodiment of the vacuum chuck in an exploded state;

[0045] Fig.15 This is a schematic structural diagram of a screw cap in a fourth embodiment of the vacuum suction cup;

[0046] Fig.16 This is a schematic diagram of the three-dimensional structure of the fifth embodiment of the vacuum suction cup;

[0047] Fig.17 This is a schematic diagram of the structure of the fifth embodiment of the vacuum chuck in an exploded state;

[0048] Fig.18 This is a schematic structural diagram of a cover plate of the fifth embodiment of the vacuum suction cup;

[0049] Fig.19 This is a schematic structural diagram of the through hole and the guiding inclined surface of the fifth embodiment of the vacuum suction cup.

[0050] In the figure, 1 is an elastic disc body; 2 is a skeleton; 21 is a connecting rod; 21 is an axial hole; 22 is a dividing slit; 23 is a pressing plate; 24 is a strip slit; 25 is a convex ring; 26 is a closed hole; 27 is a protrusion; 28 is a supporting platform; 4 is a suction cup cover; 41 is a perforation; 42 is a first pressing ring; 43 is a second pressing ring; 44 is a cavity; 45 is a guide groove; 46 is an avoidance position; 47 is a positioning shaft; 5 is an axle pin; 51 is a spring; 6 is a sliding button; 61 is a guide slideway; 62 is a guide edge; 63 is a positioning groove; 7 is a rotary cover; 71 is a sleeve; 8 is a lifting and pressing part; 81 is an extrusion plate; 82 is a mounting hole; 83 is a first edge; 84 is a second edge; 9 is an adjusting ring; 91 is a convex edge; 92 is a through hole; 93 is a guide inclined surface; 94 is a limiting protrusion; 95 is a slide groove; 96 is a fixing surface; 10 is a cover plate; 101 is a connecting column; 11 is a positioning boss; 12 is a supporting surface. DETAILED DESCRIPTION

[0051] The utility model is further described below in conjunction with the accompanying drawings:

[0052] like Figures 1 to 19As shown, a vacuum suction cup includes an elastic disc body 1, a skeleton 2 is arranged inside the elastic disc body 1, the skeleton 2 is a flat skeleton and has a plurality of separation slits 22 on the outer edge, the separation slits 22 evenly divide the outer edge of the skeleton into a plurality of pressing sheets 23; a connecting rod 21 is also arranged in the middle of the skeleton 2, a plurality of strip slits 24 are arranged on the skeleton 2 and between the outer side of the connecting rod 21 and the pressing sheets 23, the strip slits 24 are arranged in a circular array around the connecting rod 21; and a suction cup cover 4 is also included, the suction cup cover 4 covers the elastic disc body 1, a through hole 41 is arranged in the center of the suction cup cover 4, the connecting rod 21 passes through the through hole 41 and is connected to an extrusion assembly, the extrusion assembly applies pressure to the elastic disc body 1 through the suction cup cover 4 so that the elastic disc body 1 is pulled upward with the skeleton 2 to form a vacuum cavity and is adsorbed and fixed on the base surface. Furthermore, the thickness of the elastic disc body 1 is 1-10mm, preferably 3-8mm. The elastic disc body 1 is a viscose elastic disc body formed on the skeleton. Before the suction cup cover 4 squeezes the elastic disc body 1, the viscose elastic disc body can stick the vacuum suction cup to the base surface by adhesion, and use the elastic disc body 1 itself to stick to the base surface as a whole, and keep the vacuum suction cup from falling. The viscosity of the viscose elastic disc body surface enables the disc body surface to have the ability to fill the microscopic bumps on the base surface. The disc body surface can be embedded in the microscopic depressions on the base surface, or wrap the tiny protrusions on the base surface, so that the base surface and the disc body surface are integrated to achieve contact without small gaps, so that after the suction cup cover 4 squeezes the elastic disc body, it can well block the outside atmosphere from slowly penetrating into the disc body from the contact point between the disc body and the base surface. Therefore, the vacuum degree inside the disk is higher, and the adsorption force of the disk is greater. The adsorption force of the disk on the base surface enables the edge of the bottom surface of the disk to continuously fill or cover the microscopic depressions or protrusions on the base surface, thereby greatly extending the single service life of the disk.

[0053] like Figure 3 As shown, each pressing sheet 23 is provided with at least one closed hole 26. The closed hole 26 allows the elastic disc 1 to pass through the closed hole 26 in depth and wrap and fix on the side wall of the closed hole 26, i.e., the skeleton 2, when the skeleton 2 is encapsulated. The side wall of the closed hole 26 plays a radial blocking role for the elastic disc 1 near the outer edge of the skeleton 2, and cooperates with the axial blocking role of the pressing sheet 23 to prevent the elastic disc 1 from detaching from or shifting from the outer edge of the skeleton 2. In addition, each pressing sheet 26 is provided with at least one closed hole 26, which fully ensures that each pressing sheet 23 has the above-mentioned radial blocking effect, so that the elastic disc 1 wrapped on each pressing sheet 23 will not be displaced from the edge of the skeleton 2.

[0054] In a preferred case, there is a gap between the closed hole 26, the separation slit 22 and the strip slit 24, which avoids the problem that the root of the pressed sheet is too narrow and the force and force transmission are weak due to the strips of pressed sheet being cut out from the center of the skeleton, resulting in the disadvantage that the skeleton support force and rebound force are too small, and at the same time, it ensures that the suction cup has enough deformation space to be pulled into vacuum without the pressed sheet being broken. The closed hole 26, the separation slit 22 and the strip slit 24 are arcs with the same rotation direction, so that when the skeleton 2 is pulled upward, the pressed sheet 23 shrinks and moves closer to the middle part and generates a rotation trend along the arc line at the same time, rotating and shrinking the elastic disc body 1 wrapped outside the skeleton 2, so that the elastic disc body 1 fits more closely with the base surface, thereby forming a better vacuum chamber seal.

[0055] In a preferred case, the skeleton 2 is also provided with a reinforcement part, which protrudes from the elastic disc body; the reinforcement part is a convex ring 25 surrounding the connecting rod 21, and the convex ring 25 is arranged between the connecting rod 21 and the strip seam 24, and blocks between the elastic disc body 1 and the connecting rod 21; or the reinforcement part is a support platform 28 arranged at the bottom of the connecting rod 21, which is convenient for injection molding of the elastic disc body and saves costs. At the same time, there is a certain distance between the edge of the elastic disc body 1 and the connecting column 21. When the skeleton 2 is pulled upward with the connecting rod 21 as the center, the elastic disc body 1 will not become an obstacle, and when the skeleton 2 is pulled upward, the elastic disc body 1 is more convenient to extend to the outer edge of the skeleton 2 due to inertia, so that the elastic disc body 1 can better fit on the base surface, so that the suction cup has a stronger adsorption ability. Further, the connecting rod 21, the skeleton 2 and the reinforcement part are integrally formed. Furthermore, a plurality of protrusions 27 in an annular array are provided on the edge of the frame 2 . The protrusions 27 are arc-shaped and rotate in the same direction as the separation slit 22 . The protrusions 27 are wrapped in the elastic disc 1 to increase the strength of the frame 2 .

[0056] like Figure 5 As shown, the edge of the suction cup cover 4 forms a first pressure ring 42, and the first pressure ring 42 presses against the edge of the back side of the elastic disc body 1, so that the edge of the elastic disc body 1 can be pressed tightly against the base surface to prevent the elastic disc body 1 from shrinking toward the center and failing to be stably adsorbed on the base surface when the elastic disc body 1 is pulled up with the skeleton 2. The first pressure ring 42 supports the suction cup cover 4 and the elastic disc body 1 to form a cavity 44, and the cavity 44 provides a deformation space for the skeleton 2 to be pulled upward. Further, a second pressure ring 43 is provided in the cavity 44, and the spacing between the second pressure ring 43 and the first pressure ring 42 is 1-10mm. The first pressure ring 43 forms a secondary extrusion on the elastic disc body 1, and works together with the first pressure ring 42 to extrude the edge of the elastic disc body 1 parallel to and fit on the base surface, and the edge of the elastic disc body 1 will not be lifted and leaked due to excessive pulling force of the skeleton 2, further ensuring the stability of the suction cup adsorption.

[0057] In a preferred case, the extrusion assembly includes an axle pin 5 and a lifting and pressing part 8, two extrusion plates 81 are arranged in parallel on the lifting and pressing part 8, and mounting holes 82 are coaxially arranged on the two extrusion plates 81. The two edges of the extrusion plate 81 contacting the suction cup cover 4 are respectively a first edge 83 and a second edge 84, and the distance from the mounting hole 82 to the first edge 83 is greater than the distance from the mounting hole 82 to the second edge 84. The side of the connecting rod 21 away from the elastic disc body 1 is provided with an axle hole 211, and the axle pin 5 passes through The two ends of the lifting and pressing part 8 are inserted and fixed in the mounting hole 82 through the axial hole 211. The lifting and pressing part 8 rotates around the axle pin 5 on the suction cup cover 4 to press or loosen the suction cup. When the lifting and pressing part 8 is rotated to make the second edge 84 contact the suction cup cover 4, the suction cup is not vacuumed and adsorbed on the base surface; the lifting and pressing part 8 is rotated to make the first edge 83 contact the suction cup cover 4. At this time, the axle pin 5 is lifted and drives the middle part of the skeleton 2 upward through the connecting rod 21, thereby pulling the middle part of the suction cup to form a vacuum cavity to adsorb the suction cup on the base surface. Further, a relief position 46 is formed on the side of the suction cup cover 4 away from the elastic disc body 1, and the shape of the lifting and pressing part 8 is matched with the relief position 46, so that when the suction cup is adsorbed and fixed, the surface of the suction cup is complete and beautiful; and the position where the lifting and pressing part 8 rotates and contacts with the suction cup cover 4 is set to an arc, and the first edge 83 and the second edge 84 are smoothly transitioned, which facilitates the smooth rotation of the lifting and pressing part 8. Furthermore, the extrusion assembly further includes a spring 51, which is sleeved on the connecting rod 21, and one end of the spring 51 abuts on the suction cup cover 4 and the other end abuts on the elastic disc body 1 or the frame 2. When the suction cup is adsorbed on the base surface, the spring 51 presses on the elastic disc body 1 or the frame 2 to form a reaction force with the extrusion force of the extrusion assembly, thereby squeezing the elastic disc body 1 to fit against the base surface; when the suction cup is fitted on the base surface, the spring 51 can also support between the elastic disc body 1 and the suction cup cover 4 to prevent the middle part of the elastic disc body 1 and the frame 2 from being deformed and concave inwards.

[0058] like Figures 9 to 11As shown, the extrusion assembly includes an axle pin 5 and a slide button 6. The slide button 6 is slidably arranged on the suction cup cover 4. Guide slides 61 are arranged in parallel on the opposite sides of the sliding slide button 6. The guide slides 61 are arranged obliquely relative to the sliding direction of the slide button 6. An axle hole 211 is provided on the side of the connecting rod 21 away from the elastic disc body 1. The axle pin 5 passes through the axle hole 211 and both ends are inserted into the guide slides 61. The slide button 6 drives the guide slides 61 to slide relative to the axle pin 5. When the axle pin 5 is close to one end of the suction cup cover 4 on the guide slide 61, the elastic disc body 1 is parallel to the base surface, and the suction cup is not vacuumed. When the slide button 6 slides to make the axle pin 5 located at the end of the guide slide 61 away from the suction cup cover 4, the skeleton 2 is pulled and lifted upward, thereby driving the elastic disc body to be lifted upward, thereby forming a vacuum chamber in the middle of the suction cup to adsorb and fix the suction cup on the base surface. Furthermore, positioning grooves 63 are provided at both ends of the guide slide 61. After the shaft pin reaches both ends of the guide slide 61, it can be fixed on the positioning grooves 63 without automatically slipping off, thereby preventing the suction cup from leaking. Furthermore, guide edges 62 are provided on both sides of the slide button 6 corresponding to the guide slide 61, and a guide groove 45 matching the guide edge 62 is provided on the suction cup cover 4. The guide edge 62 slides in the guide groove 45, thereby limiting the sliding direction of the slide button 6. Furthermore, the extrusion assembly also includes a spring 51, which is sleeved on the connecting rod 21, and one end of the spring 51 abuts on the suction cup cover 4 and the other end abuts on the elastic disc body 1 or the frame 2. When the suction cup is adsorbed on the base surface, the spring 51 presses against the elastic disc body 1 or the skeleton 2 to form a reaction force with the extrusion force of the extrusion assembly, thereby squeezing the elastic disc body 1 to fit against the base surface; when the suction cup is in contact with the base surface, the spring 51 can also support between the elastic disc body 1 and the suction cup cover 4 to prevent the middle part of the elastic disc body 1 and the skeleton 2 from sinking and deforming inward.

[0059] In a preferred case, Figure 12 to Figure 14As shown, the extrusion assembly includes a screw cap 7, a sleeve 71 is provided on the inner side of the screw cap 7, an internal thread is provided in the sleeve, an external thread matching the internal thread is provided on the connecting rod 21, and the screw cap 7 is screwed and fixed on the connecting rod 21 through the sleeve 72. The connection length between the connecting rod 21 and the sleeve 71 is adjusted by rotating the screw cap 7, thereby adjusting the size of the suction force of the suction cup. Furthermore, a positioning boss 11 is provided on the side of the suction cup cover 4 close to the screw cap 7, and a supporting surface 12 is provided around the positioning boss 11. The outer diameter of the positioning boss 11 matches the inner diameter of the screw cap 7 and the side wall of the screw cap 7 abuts against the supporting surface 12. The positioning boss 11 and the supporting surface 12 cooperate to form a rotating track for fixing the screw cap 7 to prevent the screw cap 7 from being eccentric. Furthermore, a convex ridge 91 is provided on the outer wall of the screw cap 7 to facilitate the gripping of the screw cap 7 for adjustment. Furthermore, the extrusion assembly further includes a spring 51, which is sleeved on the connecting rod 21, and one end of the spring 51 abuts on the suction cup cover 4 and the other end abuts on the elastic disc body 1 or the frame 2. When the suction cup is adsorbed on the base surface, the spring 51 presses on the elastic disc body 1 or the frame 2 to form a reaction force with the extrusion force of the extrusion assembly, thereby squeezing the elastic disc body 1 to fit against the base surface; when the suction cup is fitted on the base surface, the spring 51 can also support between the elastic disc body 1 and the suction cup cover 4 to prevent the middle part of the elastic disc body 1 and the frame 2 from being deformed and concave inwards.

[0060] In a preferred case, if Figures 15 to 18As shown, the extrusion assembly includes an adjusting ring 9 and an axle pin 5. A through hole 92 is provided at a position of the adjusting ring 9 corresponding to the through hole 41. Two guiding inclined surfaces 93 are symmetrically provided on the edge of the through hole 92. One end of the guiding inclined surface 93 is inclined toward the side of the elastic disc body 1; an axle hole 211 is provided on the side of the connecting rod 21 away from the elastic disc body 1, and the axle pin 5 passes through the axle hole 211 and presses on the guiding inclined surfaces 93 at both ends. A limiting protrusion 94 is provided between the two guiding inclined surfaces 93, and a fixing surface 96 is provided at both ends of the guiding inclined surfaces 93. The fixing surface 96 is parallel to the suction cup cover 4. The adjusting ring 9 is rotated to make the axle pin 5 move relative to the guiding inclined surfaces 93. When the axle pin 5 is located at the fixing surface 96 at one end of the guiding inclined surface 93 away from the suction cup cover 4, the axle pin 5 is lifted and drives the middle part of the skeleton 2 upward through the connecting rod 21, thereby pulling the middle part of the suction cup to form a vacuum cavity to adsorb the suction cup on the base surface. When the axle pin 5 is located at the fixed surface 96 of the guide slope 9 close to one end of the suction cup cover 4, the axle pin 5 drops, so that the connecting rod 21 loses the pulling force on the frame 2, and the middle part of the frame 2 is sunken and recovers the deformation, so that the vacuum cavity formed in the middle of the suction cup disappears, and the suction cup can be easily removed from the base surface. Further, two positioning shafts 47 are symmetrically provided on the upper surface of the suction cup cover, and a slide groove 95 cooperating with the positioning shaft 47 is provided on the adjustment ring 9. When the adjustment ring 9 rotates, the slide groove 95 rotates around the positioning shaft 47, so that the rotation distance and rotation direction of the adjustment ring 9 can be limited, so that the adjustment ring 9 has a constant rotation direction that corresponds to the suction or cancellation of the suction cup. For example, the adjustment ring 9 rotates clockwise to adsorb the suction cup on the base surface, and the adjustment ring 9 rotates counterclockwise to remove the suction cup from the base surface. It is easy to use, and the positioning shaft 47 can further make the adjustment ring 9 fit with the suction cup cover 4 to prevent it from falling.

[0061] In a preferred case, a positioning boss 11 is provided on one side of the suction cup cover 4 close to the adjustment ring 9, and a support surface 12 is provided around the positioning boss 11. The outer diameter of the positioning boss 11 matches the inner diameter of the adjustment ring 9 and the side wall of the adjustment ring 9 abuts against the support surface 12. The positioning boss 11 and the support surface 12 cooperate to form a rotating track for fixing the adjustment ring 9 to avoid eccentricity of the adjustment ring 9. Further, a convex ridge 91 is provided on the outer side wall of the adjustment ring 9 to facilitate gripping the adjustment ring 9 for adjustment. A cover plate 10 is also included, which is fixedly covered in the middle of the adjustment ring 9 to make the whole more beautiful. A connecting column 101 is provided on the cover plate 10, and the connecting column 101 is plugged into the positioning shaft 47 to fix the cover plate 10 in the adjustment ring 9. Further, the extrusion assembly also includes a spring 51, which is sleeved on the connecting rod 21, and one end of the spring abuts on the suction cup cover 4 and the other end abuts on the elastic disc body 1 or the skeleton 2. When the suction cup is adsorbed on the base surface, the spring 51 presses against the elastic disc body 1 or the skeleton 2 to form a reaction force with the extrusion force of the extrusion assembly, thereby squeezing the elastic disc body 1 to fit against the base surface; when the suction cup is in contact with the base surface, the spring 51 can also support between the elastic disc body 1 and the suction cup cover 4 to prevent the middle part of the elastic disc body 1 and the skeleton 2 from sinking and deforming inward.

[0062] In a preferred case, the spring 51 is conical and the large end of the spring 51 is located in a fixed groove formed by the convex ring 25 around the connecting rod 21. The conical spring 51 has a larger compression space and can prevent the spring 51 from bending and deforming when it is subjected to a large compression force. The large end of the spring 51 is arranged in the fixed groove and can also prevent the bottom of the spring 51 from being dislocated and twisted when the force is uneven, thereby further ensuring the elastic deformation of the spring 51.

[0063] This embodiment is only an illustration of the concept and implementation of the utility model, and does not limit it. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A vacuum suction cup, comprising an elastic disc body, wherein a frame is provided in the elastic disc body, characterized in that: The outer edge of the skeleton is provided with a plurality of dividing slits and a connecting rod is provided in the middle, the dividing slits divide the outer edge of the skeleton into a plurality of pressing plates, a plurality of strip slits are provided on the skeleton and between the outer side of the connecting rod and the pressing plates, and the strip slits are arranged in a circular array around the connecting rod; it also includes a suction cup cover, the suction cup cover covers the elastic disc body, the center of the suction cup cover is provided with a through hole, the connecting rod is connected to an extrusion assembly through the through hole, and the extrusion assembly forms a vacuum cavity in the middle of the elastic disc body by lifting the connecting rod and pressing the suction cup cover so that the elastic disc body is adsorbed on the base surface.

2. The vacuum suction cup according to claim 1, characterized in that The skeleton is also provided with a reinforcing portion, which protrudes from the elastic disc body; the reinforcing portion is a convex ring surrounding the connecting rod, which is arranged between the connecting rod and the strip seam and blocks the elastic disc body and the connecting rod; or the reinforcing portion is a support platform arranged at the bottom of the connecting rod.

3. The vacuum suction cup according to claim 2, characterized in that The frame is a flat frame, each pressing sheet is provided with at least one closed hole, and a gap is provided between the closed hole, the separation slit and the strip slit; the closed hole, the separation slit and the strip slit are arc-shaped with the same rotation direction.

4. The vacuum suction cup according to claim 3, characterized in that A plurality of protrusions in an annular array are also provided on the frame. The protrusions are arc-shaped and are consistent with the rotation direction of the separation slit.

5. The vacuum suction cup according to claim 2, wherein: The connecting rod, the frame and the reinforcement part are integrally formed; the thickness of the elastic disc body is 1-10 mm.

6. The vacuum suction cup according to claim 4, characterized in that The thickness of the elastic disc body is 3-8mm, and the adsorption surface of the elastic disc body is a plane; the elastic disc body is a viscose elastic disc body formed on the skeleton, and before the suction cup cover squeezes the elastic disc body, the viscose elastic disc body can stick the vacuum suction cup to the base surface through adhesion force.

7. The vacuum suction cup according to claim 1, wherein: The edge of the suction cup cover forms a first pressure ring, which presses against the edge of the back side of the elastic disc body and supports a cavity formed between the suction cup cover and the elastic disc body. A second pressure ring is arranged in the cavity, and the spacing between the second pressure ring and the first pressure ring is 1-10mm.

8. The vacuum suction cup according to claim 2, wherein: A spring is also sleeved on the connecting rod, one end of the spring abuts against the suction cup cover and the other end abuts against the elastic disc body or the frame.

9. The vacuum suction cup according to claim 8, characterized in that The spring is conical and the large end of the spring is located in the convex ring or on the support platform.

10. The vacuum suction cup according to any one of claims 1 to 9, characterized in that: The extrusion assembly includes an axle pin and a sliding button, and guide slides are arranged in parallel on two opposite sides of the sliding button, and the guide slides are arranged obliquely relative to the sliding direction of the sliding button; an axle hole is provided on the side of the connecting rod away from the elastic disc body, the axle pin passes through the axle hole and both ends are inserted into the guide slides; the sliding button slides on the suction cup cover.

11. The vacuum suction cup according to claim 10, wherein: The sliding button and the guide slideway are provided with guide edges on both sides corresponding to the guide edges, and the suction cup cover is provided with a guide groove matched with the guide edges.

12. The vacuum suction cup according to claim 11, wherein: The end of the guide slideway forms a positioning portion for fixing the shaft pin on the end of the guide slideway.

13. The vacuum suction cup according to any one of claims 1 to 9, characterized in that: The extrusion assembly includes an axle pin and a lifting and pressing part, an extrusion plate is arranged parallel to the lifting and pressing part, and a mounting hole is arranged on the extrusion plate. An axle hole is arranged on the side of the connecting rod away from the elastic disc body, and the axle pin passes through the axle hole and is inserted and fixed in the mounting hole at both ends; the lifting and pressing part rotates around the axle pin on the suction cup cover to tighten or loosen the suction cup.

14. The vacuum suction cup according to claim 13, wherein: The two edges of the extrusion plate in contact with the suction cup cover are respectively a first edge and a second edge, the distance from the mounting hole to the first edge is greater than the distance from the mounting hole to the second edge, and the first edge and the second edge have a smooth transition.

15. The vacuum suction cup according to claim 14, wherein: A relief position is provided on a side of the suction cup cover away from the elastic disc body, and the shape of the lifting and pressing part matches the relief position; the position where the lifting and pressing part rotates and contacts with the suction cup cover is set to an arc shape.

16. The vacuum suction cup according to any one of claims 1 to 9, characterized in that: The extrusion assembly includes an adjusting ring and an axle pin. The adjusting ring is provided with a through hole at the position corresponding to the through hole. Two guiding inclined surfaces are symmetrically provided on the circumference of the edge of the through hole. One end of the guiding inclined surface is inclined toward the elastic disc body. The side of the connecting rod away from the elastic disc body is provided with an axle hole. The axle pin passes through the axle hole and both ends rest on the guiding inclined surfaces.

17. The vacuum chuck according to claim 16, wherein: A limiting protrusion is arranged between the two guiding inclined surfaces; two positioning shafts are arranged on the suction cup cover, and a sliding groove matched with the positioning shafts is arranged on the adjusting ring.

18. The vacuum chuck according to claim 17, wherein: It also includes a cover plate, which is fixedly connected to the middle part of the adjustment ring; the cover plate is provided with a connecting column, which is inserted and fixed in the positioning shaft.

19. The vacuum chuck according to claim 18, wherein: A positioning boss is provided on one side of the suction cup cover close to the adjusting ring, a supporting surface is provided around the positioning boss, the outer diameter of the positioning boss matches the inner diameter of the adjusting ring and the side wall of the adjusting ring rests on the supporting surface; a convex ridge is provided on the outer side wall of the adjusting ring.

20. The vacuum chuck according to claim 19, wherein: The end of the guide slope is provided with a fixing surface, and the fixing surface fixes the shaft pin to the end of the guide slope.

21. The vacuum suction cup according to any one of claims 1 to 9, characterized in that: The extrusion assembly comprises a rotary cover, a sleeve is arranged on the inner side of the rotary cover, an internal thread is arranged in the sleeve, and an external thread matching with the internal thread is arranged on the connecting rod.

22. The vacuum chuck according to claim 21, wherein: A positioning boss is provided on one side of the suction cup cover close to the rotary cover, a supporting surface is provided around the positioning boss, the outer diameter of the positioning boss matches the inner diameter of the rotary cover and the side wall of the rotary cover rests on the supporting surface; a convex ridge is provided on the outer side wall of the rotary cover.

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