阅读说明：本技术 一种可自动增强负压的真空吸附装置 (Vacuum adsorption device capable of automatically enhancing negative pressure ) 是由 吴成峰 蔡增熠 叶佳祥 陈志柄 于 2019-11-19 设计创作，主要内容包括：本发明公开了一种可自动增强负压的真空吸附装置,包括：本体,具有一抽气腔和一与吸附面相配合的吸附壁,吸附壁上设有连通抽气腔的第一通孔；抽气机构,用于将抽气腔中的气体抽至外界；单向阀,与第一通孔相配合以允许气体单向地从第一通孔流入抽气腔,从而使得吸附壁与吸附面围成的吸附腔形成真空；承受件,活动装接在本体上并与抽气机构联动配合,当承受件进行一次承受外力和失去外力的动作周期时,承受件使得抽气机构对抽气腔进行一次抽气动作和排气动作,抽气动作使得吸附腔中的气体经由单向阀进入抽气腔,排气动作使得抽气腔中的气体排至外界。本发明的吸附装置在使用过程中可自动增加吸附腔的负压,提高吸附能力,使用十分方便,结构简单。(The invention discloses a vacuum adsorption device capable of automatically enhancing negative pressure, which comprises: the body is provided with an air suction cavity and an adsorption wall matched with the adsorption surface, and the adsorption wall is provided with a first through hole communicated with the air suction cavity; the air pumping mechanism is used for pumping the air in the air pumping cavity to the outside; the one-way valve is matched with the first through hole to allow gas to flow into the air suction cavity from the first through hole in a one-way mode, so that the adsorption cavity formed by the adsorption wall and the adsorption surface is vacuumized; the bearing piece is movably connected to the body and is in linkage fit with the air pumping mechanism, when the bearing piece is subjected to external force bearing once and loses the action period of the external force, the bearing piece enables the air pumping mechanism to perform air pumping action and exhaust action once on the air pumping cavity, the air pumping action enables air in the air pumping cavity to enter the air pumping cavity through the one-way valve, and the exhaust action enables the air in the air pumping cavity to be exhausted to the outside. The adsorption device can automatically increase the negative pressure of the adsorption cavity in the use process, improve the adsorption capacity, and has convenient use and simple structure.)

1. A vacuum adsorption device capable of automatically enhancing negative pressure is characterized by comprising:

the body is provided with an air suction cavity and an adsorption wall matched with the adsorption surface, and the adsorption wall is provided with a first through hole communicated with the air suction cavity;

the air pumping mechanism is used for pumping the air in the air pumping cavity to the outside;

the one-way valve is matched with the first through hole to allow gas to flow into the suction cavity from the first through hole in a one-way mode, so that the adsorption cavity formed by the adsorption wall and the adsorption surface is vacuumized;

the bearing piece is movably connected to the body and is in linkage fit with the air exhaust mechanism, when the bearing piece is in an action period of once bearing external force and losing the external force, the bearing piece enables the air exhaust mechanism to perform once air exhaust action and exhaust action on the air exhaust cavity, the air exhaust action enables air in the adsorption cavity to enter the air exhaust cavity through the one-way valve, and the exhaust action enables the air in the air exhaust cavity to be exhausted to the outside.

2. The vacuum adsorption device capable of automatically enhancing negative pressure as claimed in claim 1, further comprising an elastic member, wherein when the bearing member bears an external force, the bearing member overcomes the elastic force of the elastic member to drive the air pumping mechanism to perform an air exhaust operation on the air pumping cavity, and when the bearing member loses the external force, the air pumping mechanism performs an air pumping operation on the air pumping cavity under the elastic force of the elastic member; or, when the bearing piece bears external force, the bearing piece overcomes the elastic force of the elastic piece to drive the air exhaust mechanism to exhaust the air exhaust cavity, and when the bearing piece loses the external force, the air exhaust mechanism exhausts the air exhaust cavity under the elastic force of the elastic piece.

3. The vacuum adsorption device capable of automatically enhancing negative pressure as claimed in claim 2, wherein the elastic member is disposed between the suction mechanism and the body, or the elastic member is disposed between the receiving member and the body.

4. The vacuum adsorption device capable of automatically enhancing negative pressure as claimed in claim 2, wherein the air-extracting mechanism is a piston assembly, the piston assembly comprises a piston slidably engaged with the air-extracting chamber, the piston presses the air in the air-extracting chamber to the outside when moving in a direction of compressing the air in the air-extracting chamber, and the piston moves in a direction opposite to the direction of compressing the air in the air-extracting chamber under the elastic force of the elastic member so as to open the check valve.

5. The vacuum adsorption device capable of automatically enhancing negative pressure as claimed in claim 4, wherein the receiving member is in linkage fit with the piston, a first guiding inclined surface is provided on the piston, and/or a second guiding inclined surface is provided on the receiving member, and the receiving member is in linkage fit with the piston through the first guiding inclined surface and/or the second guiding inclined surface.

6. The vacuum adsorption device capable of automatically enhancing negative pressure as claimed in claim 5, wherein the receiving member comprises a slider and a hook connected to the slider, the slider is slidably attached to the body, the hook is located outside the body to hook a foreign object, and the slider drives the piston to slide along a direction perpendicular to a sliding direction of the slider through the first guide slope and/or the second guide slope.

7. The vacuum adsorption device capable of automatically enhancing the negative pressure as claimed in claim 1, further comprising a sealing rubber pad, wherein the sealing rubber pad is provided with a second through hole correspondingly communicated with the first through hole, one surface of the sealing rubber pad is attached to the bottom surface of the adsorption wall, at least two sealing cavities are arranged on the other surface of the sealing rubber pad, each sealing cavity is communicated with the air suction cavity through the corresponding second through hole and the corresponding first through hole, when the sealing rubber pad is adsorbed on the adsorption surface, the sealing cavity and the adsorption surface form the adsorption cavity, and the at least two sealing cavities are not communicated with each other.

8. The vacuum adsorption device capable of automatically enhancing the negative pressure as claimed in claim 1, further comprising a pressure relief mechanism, wherein the pressure relief mechanism is provided with a pressure relief channel for communicating the adsorption cavity with the outside, the pressure relief mechanism is movable between a sealing position and a pressure relief position, in the sealing position, the pressure relief channel is closed to cut off the communication between the adsorption cavity and the outside, and in the pressure relief position, the pressure relief channel is opened to allow the outside air to enter the adsorption cavity through the pressure relief channel.

9. The vacuum adsorption device capable of automatically enhancing negative pressure according to claim 8, wherein the pressure relief mechanism comprises a pressure relief valve core mounted on the body and movable between the sealing position and the pressure relief position, the pressure relief valve core is provided with the pressure relief channel, and the pressure relief channel is opened or closed by driving the pressure relief valve core; the pressure relief mechanism further comprises a pressure relief plug, the pressure relief valve core is matched with the pressure relief plug, the pressure relief valve core is arranged at the sealing position, the pressure relief plug plugs one of the ports of the pressure relief channel, and the pressure relief valve core is arranged at the pressure relief position and separated from the port of the pressure relief channel.

10. The vacuum adsorption device capable of automatically enhancing the negative pressure according to claim 1, the check valve is a conical plug, a conical hole part matched with the conical plug in shape is formed on the first through hole, the check valve further comprises a sealing rubber gasket, the sealing rubber pad is provided with a second through hole correspondingly communicated with the first through hole, one surface of the sealing rubber pad is attached to the bottom surface of the adsorption wall, the other surface of the sealing rubber pad is matched with the adsorption surface to form the adsorption cavity, the one-way valve and the sealing rubber gasket are integrally formed, the one-way valve and the sealing rubber gasket are arranged on the adsorption wall through secondary injection molding, the check valve with sealed cushion adopts the silica gel material, the check valve with it has the second spliced pole to go back integrated into one piece between the sealed cushion, the second spliced pole is right the restoring to the throne of check valve provides the elastic force.

Technical Field

The invention relates to an adsorption device, in particular to a vacuum adsorption device capable of automatically enhancing negative pressure.

Background

The adsorption principle of the vacuum adsorption device is that vacuum is formed between the adsorption device and the adsorption surface so that the adsorption device is adsorbed on smooth surfaces such as glass, ceramic and the like, and the vacuum adsorption device is very wide in application.

The surface requirement of vacuum adsorption device to the adsorption face is higher, when the surface of adsorption face is comparatively unevenness, if reciprocal exert the effort to vacuum adsorption device, for example, reciprocal hang the heavy object in vacuum adsorption device and take off from vacuum adsorption device, make vacuum adsorption device produce certain displacement easily, and at the in-process of displacement, the outside air probably gets into the absorption chamber between vacuum adsorption device and the adsorption face in the time of the machine, thereby lead to vacuum to reduce gradually, finally probably lead to the adsorption function inefficacy.

Disclosure of Invention

The invention aims to solve the problems and provides a vacuum adsorption device capable of automatically enhancing negative pressure, wherein a bearing piece of the vacuum adsorption device can perform an action cycle of bearing external force once and losing the external force, and can perform air suction once for an adsorption cavity, so that the vacuum adsorption device can automatically enhance negative pressure in the use process, and has better use effect and simple structure.

In order to achieve the purpose, the invention provides the following technical scheme: a vacuum adsorption device capable of automatically enhancing negative pressure comprises:

the body is provided with an air suction cavity and an adsorption wall matched with the adsorption surface, and the adsorption wall is provided with a first through hole communicated with the air suction cavity;

the air pumping mechanism is used for pumping the air in the air pumping cavity to the outside;

the one-way valve is matched with the first through hole to allow gas to flow into the suction cavity from the first through hole in a one-way mode, so that the adsorption cavity formed by the adsorption wall and the adsorption surface is vacuumized;

the bearing piece is movably connected to the body and is in linkage fit with the air exhaust mechanism, when the bearing piece is in an action period of once bearing external force and losing the external force, the bearing piece enables the air exhaust mechanism to perform once air exhaust action and exhaust action on the air exhaust cavity, the air exhaust action enables air in the adsorption cavity to enter the air exhaust cavity through the one-way valve, and the exhaust action enables the air in the air exhaust cavity to be exhausted to the outside.

Preferably, the air extractor further comprises an elastic element, when the bearing element bears an external force, the bearing element overcomes the elastic force of the elastic element to drive the air extracting mechanism to perform air exhaust action on the air extracting cavity, and when the bearing element loses the external force, the air extracting mechanism performs air extraction action on the air extracting cavity under the elastic force of the elastic element; or, when the bearing piece bears external force, the bearing piece overcomes the elastic force of the elastic piece to drive the air exhaust mechanism to exhaust the air exhaust cavity, and when the bearing piece loses the external force, the air exhaust mechanism exhausts the air exhaust cavity under the elastic force of the elastic piece.

Preferably, the elastic member is disposed between the air exhaust mechanism and the body, or the elastic member is disposed between the bearing member and the body.

Preferably, the air exhaust mechanism is a piston assembly, the piston assembly comprises a piston in sliding fit with the air exhaust cavity, the piston presses the air in the air exhaust cavity to the outside when moving in the direction of compressing the air in the air exhaust cavity, and the piston moves in the direction opposite to the direction of compressing the air in the air exhaust cavity under the elastic force of the elastic part so as to open the one-way valve.

Preferably, the bearing piece is in linkage fit with the piston, a first guide inclined plane is arranged on the piston, and/or a second guide inclined plane is arranged on the bearing piece, and the bearing piece is in linkage with the piston through the first guide inclined plane and/or the second guide inclined plane.

Preferably, the bearing member includes a slider and a hook connected to the slider, the slider is slidably attached to the body, the hook is located outside the body to hook a foreign object, and the slider drives the piston to slide along a direction perpendicular to a sliding direction of the slider through the first guide slope and/or the second guide slope.

Preferably, still including sealed cushion, sealed cushion be equipped with first through-hole corresponds the second through-hole that is linked together, sealed cushion one side laminate in the bottom surface of absorption wall is equipped with two at least sealed cavities on the another side, every sealed cavity all through corresponding second through-hole and first through-hole with the chamber of bleeding is linked together sealed cushion adsorbs when on the adsorption surface, sealed cavity with the adsorption surface forms the absorption chamber, just two at least sealed cavities do not communicate each other.

Preferably, the adsorption device further comprises a pressure relief mechanism, the pressure relief mechanism is provided with a pressure relief channel used for communicating the adsorption cavity with the outside, the pressure relief mechanism can move between a sealing position and a pressure relief position, the pressure relief channel is closed to cut off the communication between the adsorption cavity and the outside, and the pressure relief channel is opened to enable the outside air to enter the adsorption cavity through the pressure relief channel when the pressure relief position is adopted.

Preferably, the pressure relief mechanism comprises a pressure relief valve core which is arranged on the body and can move between the sealing position and the pressure relief position, the pressure relief valve core is provided with the pressure relief channel, and the pressure relief channel is opened or closed by driving the pressure relief valve core; the pressure relief mechanism further comprises a pressure relief plug, the pressure relief valve core is matched with the pressure relief plug, the pressure relief valve core is arranged at the sealing position, the pressure relief plug plugs one of the ports of the pressure relief channel, and the pressure relief valve core is arranged at the pressure relief position and separated from the port of the pressure relief channel.

Preferably, the check valve is a toper end cap, be formed with on the first through-hole with toper end cap shape assorted taper hole portion still includes sealed cushion, sealed cushion be equipped with the second through-hole that first through-hole correspondence is linked together, the one side of sealed cushion laminate in the bottom surface of absorption wall, another side and absorption surface cooperate and form the absorption chamber, the check valve with sealed cushion integrated into one piece, the check valve with sealed cushion is installed through the secondary is moulded plastics on the absorption wall, the check valve with sealed cushion adopts the silica gel material, the check valve with it has the second spliced pole to go back integrated into one piece between the sealed cushion, the second spliced pole is right the restoring to the throne of check valve provides the elastic force.

The invention has the beneficial effects that:

1. according to the vacuum adsorption device, the bearing piece of the vacuum adsorption device is in linkage fit with the air exhaust mechanism, when the bearing piece is in an action period of bearing external force once and losing the external force, the bearing piece enables the air exhaust mechanism to perform air exhaust action and exhaust action once on the air exhaust cavity, so that the negative pressure of the adsorption cavity can be automatically increased in the use process of the vacuum adsorption device, the adsorption capacity is improved, the use is very convenient, the effect is good, and the structure is simple.

2. The bearing piece of the vacuum adsorption device is in linkage fit with the piston of the air exhaust mechanism, the piston is provided with the first guide inclined surface, and/or the bearing piece is provided with the second guide inclined surface, and the bearing piece is in linkage with the piston through the first guide inclined surface and/or the second guide inclined surface, so that the vacuum adsorption device is simple in structure and reliable in function.

3. The sealing rubber gasket is provided with at least two sealing concave cavities, the gas of the sealing concave cavities flows into the air pumping cavity in a one-way mode through the control of the one-way valve, and when the sealing rubber gasket is adsorbed on the adsorption surface, the at least two sealing concave cavities are not communicated with each other, so that the pressure relief of one sealing concave cavity cannot influence other sealing concave cavities, the vacuum adsorption device can still keep the adsorption function, and the function is more reliable.

4. According to the invention, the pressure relief mechanism is arranged, and the through hole controls the opening or closing of the pressure relief channel on the pressure relief mechanism to control the connection or disconnection of the adsorption cavity and the outside, so that the structure is simple, the control is convenient, and the operation is easy.

5. The sealing cavity is divided into an inner cavity sealing cavity and an outer cavity sealing cavity, the inner cavity sealing cavity is directly communicated with the air pumping cavity, and the outer cavity sealing cavity is indirectly communicated with the air pumping cavity through the inner cavity sealing cavity and the communicating channel. The pumping cavity can be arranged small and is not easy to leak, the pressure relief mechanism does not need to be arranged in a plurality of modes, gas of the pressure relief mechanism can enter the pumping cavity after sequentially passing through the cavity outer sealing cavity, the communicating channel and the cavity inner sealing cavity, and the structure is simpler and compact.

6. The top wall of the adsorption wall is provided with a groove corresponding to the first through hole outside the cavity, an opening of the groove is covered with a pressing cover, a gap is formed between the pressing cover and the bottom wall of the groove, the through hole is formed in the top wall of the adsorption wall and located at the groove, the first through hole outside the cavity is communicated with the cavity sealed in the cavity through the gap and the through hole, and the gap and the through hole form a communication channel.

7. The pressure relief mechanism comprises a pressure relief valve core and a pressure relief plug, the pressure relief plug plugs one port of the pressure relief channel when the pressure relief valve core is in a sealing position, the pressure relief plug is separated from the port of the pressure relief channel when the pressure relief valve core is in a pressure relief position, the pressure relief mechanism is very simple, and the function is reliable.

8. Pressure release end cap, toper end cap and sealed cushion integrated into one piece, pressure release end cap, toper end cap and sealed cushion are installed on the adsorption wall through secondary moulding plastics, and the shaping is very simple to sealed cushion is difficult to break away from with the adsorption wall.

9. Pressure release end cap, check valve and still respectively integrated into one piece have first spliced pole and second spliced pole between the sealed cushion, and first spliced pole provides the elastic force to reseing of pressure release end cap, and the second spliced pole provides the elastic force to reseing of check valve, and first spliced pole and second spliced pole play the connection effect promptly and play the elastic component effect again to need not to set up the elastic component in addition, the structure is simpler, practices thrift the cost.

10. The check valve adopts the silica gel material, and the silica gel material is difficult to with other materials bonding to can ensure that the check valve can smoothly open, ensure that the function is reliable.

11. The sealing gasket is further integrally formed with an anti-slip part, and the anti-slip part enables a larger static friction force to be formed between the vacuum adsorption device and the adsorption surface so as to improve the bearing capacity of the vacuum adsorption device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective assembly view of a vacuum adsorption apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic exploded view of a vacuum suction apparatus according to an embodiment of the present invention;

FIG. 3 is a perspective cross-sectional view of a vacuum chuck in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a vacuum suction apparatus according to an embodiment of the present invention, when the hook is not pressed, the air-extracting mechanism performs an air-exhausting operation;

FIG. 5 is a cross-sectional view of a vacuum suction apparatus according to an embodiment of the present invention, wherein the hook is pressed and the air-extracting mechanism performs air-extracting operation;

FIG. 6 is a sectional view of a vacuum suction device according to an embodiment of the present invention in a partial state when a pressure releasing mechanism releases pressure;

FIG. 7 is a schematic view of a vacuum suction apparatus according to an embodiment of the present invention, showing a hook, a body and a piston;

fig. 8 is a three-dimensional structure view of the vacuum adsorption device according to an embodiment of the present invention, in which the sealing rubber pad, the pressure relief plug, and the check valve are engaged;

fig. 9 is a bottom view of a vacuum adsorption apparatus according to an embodiment of the present invention.

The reference signs are:

10-a body; 11-upper cover; 12-an adsorption wall; 121 — a first via; 121 a-first through hole in cavity; 121 b-extraluminal first through-hole; 122-perforation; 123-a communication hole; 13-air pumping cavity; 14-a communication channel; 15-a groove; 16-a gland; 17-a slide cavity;

20-sealing the rubber gasket; 21-a second via; 22-sealing the cavity; 22 a-sealing the cavity in the cavity; 22 b-an external cavity seal cavity; 23-a sealing edge; 24-a non-slip portion;

30-air extraction mechanism (piston assembly); 31-a piston; 311-a first guiding ramp; a 33-Y shaped seal ring;

40-a pressure relief mechanism; 41-pressure relief valve core; 411-a pressure relief channel; 412-an external port; 413-an internal port; 42-pressure relief plug; 43-pressure relief button;

50-a one-way valve;

61-a first connecting column; 62-a second connecting column; 63-a third connecting column;

70-a receiving member; 71-a slide block; 72-hook; 711-second guiding slope;

80-an elastic member.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 9, a vacuum adsorption apparatus capable of automatically increasing a negative pressure according to an embodiment of the present invention includes a main body 10, a sealing rubber pad 20, an air-extracting mechanism 30, a pressure-releasing mechanism 40, a check valve 50, and a bearing member 70.

The body 10 includes an upper cover 11 and an adsorption wall 12 matched with the adsorption surface (not shown), the upper cover 11 and the adsorption wall 12 are covered to form a containing cavity, an air pumping cavity 13 is arranged in the containing cavity, and a first through hole 121 communicated with the air pumping cavity 13 is arranged on the adsorption wall 12. The check valve 50 is matched with the first through hole 121 to allow gas to flow into the pumping cavity 13 from the first through hole 121 in a one-way manner, so that the adsorption cavity enclosed by the adsorption wall 12 and the adsorption surface forms vacuum to realize the adsorption function of the vacuum adsorption device.

In this embodiment, the first through hole 121 on the adsorption wall 12 includes an intra-cavity first through hole 121a and an extra-cavity first through hole 121b corresponding to the air pumping cavity 13, a sealing cavity 22 (described below) corresponding to the intra-cavity first through hole 121a is an intra-cavity sealing cavity 22a, and a sealing cavity 22 corresponding to the extra-cavity first through hole 121b is an extra-cavity sealing cavity 22 b. The adsorption wall 12 is provided with a communication channel 14, the communication channel 14 communicates the first through hole 121b outside the cavity with the cavity inside sealing cavity 22a, the first through hole 121b outside the cavity communicates with the air pumping cavity 13 through the communication channel 14, the cavity inside sealing cavity 22a and the first through hole 121a inside the cavity, and when the check valve 50 of the first through hole 121b outside the cavity is opened, the air in the cavity outside sealing cavity 22b flows into the cavity inside sealing cavity 22a and the air pumping cavity 13 through the communication channel 14. Like this the aspirating cavity 13 can set up less, be difficult to lose heart to pressure relief mechanism 40 also need not to set up a plurality ofly and comes respectively to every sealed cavity 22 and carries out the pressure release, and pressure relief mechanism 40's gas can loop through entering aspirating cavity 13 behind external cavity sealing cavity 22b, intercommunication passageway 14, the sealed cavity 22a in chamber, and the structure is simpler, compact.

Specifically, in this embodiment, a groove 15 is provided on the top wall of the adsorption wall 12 corresponding to the first cavity outside through hole 121b, an opening of the groove 15 covers a gland 16, a gap is formed between the gland 16 and the bottom wall of the groove 15, a through communication hole 123 is provided on the top wall of the adsorption wall 12 at the groove 15, the first cavity outside through hole 121b communicates with the cavity inside sealing cavity 22a through the gap and the communication hole 123, and the gap and the communication hole 123 form the communication channel 14.

Referring to fig. 9, the sealing rubber mat 20 is provided with a second through hole 21 correspondingly communicated with the first through hole 121, one surface of the sealing rubber mat 20 is attached to the bottom surface of the adsorption wall 12, and the other surface is provided with at least two sealing cavities 22, each sealing cavity 22 is communicated with the suction cavity 13 through the corresponding second through hole 21 and the corresponding first through hole 121, when the sealing rubber mat 20 is adsorbed on the adsorption surface (not shown), the adsorption cavity is enclosed by the sealing cavity 22 and the adsorption surface, and the at least two sealing cavities 22 are not communicated with each other.

Sealed cushion 20 is through the technology of secondary injection molding and absorption wall 12 fixed connection, adsorb and be equipped with a plurality of perforation 122 of interval arrangement on the outer periphery circle of wall 12, integrated into one piece has a plurality of third spliced pole 63 on the sealed cushion 20, and is corresponding, third spliced pole 63 is along the outer periphery circle interval arrangement of sealed cushion 20, and third spliced pole 63 corresponds wears to establish in perforation 122, and sealed cushion 20 is fixed on the bottom surface of adsorbing wall 12 through third spliced pole 63.

Referring to fig. 9, in the present embodiment, the sealing edge 23 integrally formed with the sealing rubber pad 20 is disposed at the edge of the sealing cavity 22, and the sealing cavity 22 is sealed by the sealing edge 23, so that the sealing cavities 22 are not communicated with each other. The air suction cavity 13 is arranged in the middle of the body 10, the cavity inner sealing concave cavity 22a and the cavity outer sealing concave cavity 22b are both arranged in a ring shape, and the cavity outer sealing concave cavity 22b surrounds the cavity inner sealing concave cavity 22 a. The sealing concave cavity 22 is provided with two sealing edges 23 which are arranged inside and outside and separate the cavity-inside sealing concave cavity 22a and the cavity-outside sealing concave cavity 22b from each other.

Continuing to look up fig. 9, in the present embodiment, the sealing rubber mat 20 is further integrally formed with the anti-slip portion 24, the anti-slip portion 24 is annular and extends along the circumferential direction of the sealing rubber mat 20, the anti-slip portions 24 are totally 4 and are arranged at intervals along the radial direction of the sealing rubber mat 20, and when the sealing rubber mat 20 is attached to the adsorption surface, the anti-slip portion 24 is attached to the adsorption surface. The antiskid part 24 is arranged to form larger static friction force between the vacuum adsorption device and the adsorption surface so as to improve the bearing capacity of the vacuum adsorption device.

The air extracting mechanism 30 is configured to extract air in the air extracting cavity 13 to the outside, in this embodiment, the air extracting mechanism 30 preferably employs a piston assembly 30, the piston assembly 30 reciprocates in the air extracting cavity 13 to extract air from the air extracting cavity 13, the piston assembly 30 specifically includes a piston 31 and a Y-shaped sealing ring 33, the piston 31 is in sliding fit with the air extracting cavity 13, the piston 31 is in linkage fit with the bearing member 70, and an elastic member 80 is sprung between the piston 31 and a top wall of the air extracting cavity 13. When the piston 31 compresses the air pumping cavity 13, the Y-shaped sealing ring 33 deforms to lose the sealing performance, so that the air in the air pumping cavity 13 can be exhausted through a gap between the Y-shaped sealing ring 33 and the inner wall of the air pumping cavity 13, after the external force is removed, the piston 31 is reset under the action of the elastic member 80, and the elastic member 80 is preferably a compression spring, and can be an elastic member of other types. Alternatively, instead of the piston assembly, an electric air pump or the like may be used.

Bearing 70 movable mounting connects on body 10 and with the linkage cooperation of mechanism 30 of bleeding, when bearing 70 carries out once and bears external force and loses the action cycle of external force, bears 70 and makes mechanism 30 of bleeding carry out once to aspirating chamber 13 and extract gas action and exhaust the action, and wherein, the action of bleeding makes the gas in the absorption chamber get into aspirating chamber 13 via check valve 50, and the action of exhausting makes the gas in aspirating chamber 13 arrange to the external world.

In this embodiment, when the bearing member 70 bears the external force, the elastic force of the elastic member 80 is overcome to drive the air pumping mechanism 30 to pump air into the air pumping cavity 13, and when the bearing member 70 loses the external force, the air pumping mechanism 30 exhausts the air into the air pumping cavity 13 under the elastic force of the elastic member 80. Of course, the following schemes may be adopted instead: when the bearing part 70 bears the external force, the bearing part overcomes the elastic force of the elastic part 80 to drive the air exhaust mechanism 30 to exhaust the air exhaust cavity 13, and when the bearing part 70 loses the external force, the air exhaust mechanism 13 exhausts the air exhaust cavity 13 under the elastic force of the elastic part 80.

The elastic member 80 of this embodiment is disposed between the air exhaust mechanism 30 and the body 10, in other embodiments, the elastic member 80 may also be disposed between the bearing member 70 and the body 10, as long as the elastic member 80 can enable the piston 31 and the bearing member 70 to reset when the external force is lost, the bearing member 70 can reset and drive the piston 31 to reset under the action of the elastic member 80, the piston 31 can reset and drive the bearing member 70 to reset under the action of the elastic member 80, and the elastic member 80 for resetting the bearing member 70 and the piston 31 respectively may also be disposed at the same time.

When the piston 31 moves in the direction of compressing the gas in the pumping chamber 13, the gas in the pumping chamber 13 is pressed to the outside, and the piston 31 moves in the direction opposite to the direction of compressing the gas in the pumping chamber 13 by the elastic force of the elastic member 80 to open the check valve 80.

In this embodiment, the linkage and the cooperation between the bearing member 70 and the piston 31 are realized by adopting the following structure: the piston 31 is provided with a first guide inclined surface 311, the bearing 70 is provided with a second guide inclined surface 711, and the bearing 70 is linked with the piston 31 through the matching of the first guide inclined surface 311 and the second guide inclined surface 711. Specifically, the bearing member 70 includes a slider 71 and a hook 72 connected to the slider 71, the slider 71 is slidably attached to the sliding cavity 17 provided on the body 10, the hook 72 is located outside the body 10 to hook the foreign object, and the slider 71 drives the piston 31 to slide along a direction perpendicular to the sliding direction of the slider 71 through the cooperation of the first guide inclined surface 311 and the second guide inclined surface 711. Alternatively, only the first guide slope 311 or only the second guide slope 711 may be provided, and the receiving member 70 may be linked with the piston 31 by the first guide slope 311 or the second guide slope 711.

The pressure release mechanism 40 has a pressure release passage 411 for communicating the adsorption cavity with the outside, and the pressure release mechanism 40 is movable between a sealing position and a pressure release position, in the sealing position, the pressure release passage 411 is closed to cut off the communication between the adsorption cavity and the outside, and in the pressure release position, the pressure release passage 411 is opened to allow the outside air to enter the adsorption cavity through the pressure release passage 411.

In this embodiment, there is one cavity inside seal cavity 22a, one cavity outside seal cavity 22b, and one pressure relief mechanism 40. The pressure relief passage 411 has an outer port 412 and an inner port 413, the outer port 412 communicating with the outside, and the inner port 413 communicating with the outer-chamber seal recess 22 b.

Specifically, referring to fig. 2, fig. 3 and fig. 6, in the present embodiment, the pressure relief mechanism 40 includes a pressure relief valve core 41, a pressure relief plug 42 and a pressure relief button 43, which are mounted on the body 10, the pressure relief valve core 41 is movable between a sealing position and a pressure relief position, a pressure relief channel 411 is disposed on the pressure relief valve core 41, and the pressure relief channel 411 is opened or closed by driving the pressure relief valve core 41. The pressure relief valve core 41 is matched with the pressure relief plug 42, when the pressure relief valve core 41 is in a sealing position, the pressure relief plug 42 plugs one of the ports of the pressure relief channel 411, the outer port 412 or the inner port 413, or simultaneously plugs the outer port 412 and the inner port 413, and when the pressure relief valve core 41 is in a pressure relief position, the pressure relief plug 42 is separated from the port of the pressure relief channel 411. The pressure relief button 43 is linked with the pressure relief valve core 41 and exposed out of the body 10 for manual driving.

Pressure release end cap 42 and sealed cushion 20 integrated into one piece in this embodiment, pressure release end cap 42 and sealed cushion 20 are installed on adsorbing wall 12 through the secondary injection molding, and the shaping is very simple like this to the secondary is moulded plastics and is made sealed cushion 20 be difficult to break away from mutually with adsorbing wall 12.

The pressure relief valve core 41 is used for enabling the pressure relief plug 42 to deform by pressing the pressure relief plug 42 so as to expose one port of the pressure relief channel 411, the outer port 412 or the inner port 413, and a first connecting column 61 is further integrally formed between the pressure relief plug 42 and the sealing rubber gasket 20, wherein the first connecting column 61 can provide elastic force for resetting of the pressure relief plug 42. The first connecting column 61 plays a role in connecting the pressure relief plug 42 with the sealing rubber pad 20 and also plays a role in an elastic piece, so that the pressure relief plug 42 is not required to be reset by the elastic piece additionally, the structure is simpler, and the cost is saved.

In this embodiment, the check valve 50 is a tapered plug 50, a tapered hole portion matching with the tapered plug is formed in the first through hole 121, the tapered plug 50 is matched with the tapered hole portion, and the diameter of the tapered hole portion gradually increases from the bottom surface of the adsorption wall 12 to the top surface of the adsorption wall 12, so that the gas can only flow from one side of the bottom surface of the adsorption wall 12 to one side of the top surface of the adsorption wall 12, and further flows into the air pumping cavity 13. When the tapered plug 50 is in engagement with the inner wall of the tapered bore portion, the one-way valve 50 is in a closed condition, and when the tapered plug 50 is disengaged from the inner wall of the tapered bore portion, the one-way valve 50 is in an open condition to allow gas to flow therethrough.

Preferably, check valve 50 and sealed cushion 20 integrated into one piece, check valve 50 and sealed cushion 20 are installed on adsorbing wall 12 through the secondary injection molding, check valve 50 with sealed cushion 20 adopts the silica gel material, and the toper end cap 50 of silica gel material is difficult to bond with the inner wall of first through-hole 121, especially when the material that adsorbs wall 12 is plastics to make the 50 functions of check valve more reliable. A second connecting column 62 is further integrally formed between the check valve 50 and the sealing rubber gasket 20, and the second connecting column 62 provides elastic force for resetting of the check valve 50. The second connecting column 62 has the functions of connecting the check valve 50 and the sealing rubber gasket 20 and has the function of an elastic piece, so that the check valve 50 does not need to be reset by additionally arranging the elastic piece, the structure is simpler, and the cost is saved.

The working process of this embodiment is briefly described as follows:

referring to fig. 4, in the initial state where the hook 72 is not pressed, the piston 31 moves downward under the action of the elastic member 80, the piston 31 compresses the gas in the pumping chamber 13, and at this time, because the tapered plug 50 is in the state of closing the first through hole 121, the gas in the pumping chamber 13 can be discharged to the outside only from the deformed Y-shaped sealing ring.

Referring to fig. 5, when the vacuum suction apparatus of the present invention needs to be sucked onto the suction surface, the hanging object is hung on the hook 72, the hook 72 applies an acting force in the direction of F1 to the slider 71, so that the slider 71 slides relative to the body 10, the slider 71 drives the piston 31 to slide upwards along the direction perpendicular to the sliding direction of the slider 71 through the cooperation of the first guiding inclined surface 311 and the second guiding inclined surface 711, the piston 31 slides upwards to generate a vacuum in the suction cavity 13, and further, the gas in the sealed cavity 22 can push the tapered plug 50 to open the first through hole 121 and enter the suction cavity 13. The flow path of the pumping gas is as follows: the gas in the cavity external sealing cavity 22b enters the communicating channel 14 through the second through hole 21 on the sealing rubber gasket 20 and pushes the tapered plug 50 at the cavity external first through hole 121b, and flows to the cavity internal sealing cavity 22a through the communicating channel 14, and the gas in the cavity internal sealing cavity 22a finally enters the pumping cavity 13 through the second through hole 21 on the sealing rubber gasket 20 and pushes the tapered plug 50 at the cavity internal first through hole 121a, so that the gas in each sealing cavity 22 is pumped into the pumping cavity 13.

Due to the effect of the conical plug 50, the gas in the sealed cavity 22 can only flow to the pumping cavity 13 in a single direction, so that the gas can be pumped for multiple times by repeating the process for multiple times, and finally, the gas in each sealed cavity 22 can be completely exhausted to the outside, so that the vacuum degree is high, the adsorption force is greatly improved, and the adsorption is firmer.

Referring to fig. 6, when the vacuum suction device of the present invention needs to be removed from the suction surface, at this time, only an external force F2 needs to be lightly applied to the pressure relief button 43 along the direction of the arrow in the figure, the pressure relief button 43 drives the pressure relief valve core 41, the pressure relief valve core 41 presses the pressure relief plug 42 to deform the pressure relief plug 42, so that the two ports (the outer port 412 and the inner port 413) of the pressure relief channel 411 are separated from the pressure relief plug 42, thereby opening the pressure relief channel 411, the external air enters the pressure relief channel 411 from the outer port 412 of the pressure relief channel 411 and enters the cavity external sealing cavity 22b from the inner port 413 of the pressure relief channel 411, the air in the cavity external sealing cavity 22b enters the communication channel 14 through the tapered plug 50 at the cavity external first through hole 121b, which is pushed by the second through hole 21 on the sealing rubber gasket 20, and flows to the cavity internal sealing cavity 22a through the communication channel 14, the gas in the cavity 22a is pushed out of the conical plug 50 at the first through hole 121a through the second through hole 21 of the sealing rubber pad 20 to finally enter the pumping cavity 13, so that the pressure relief function is realized, and the vacuum adsorption device is easily taken down from the adsorption surface.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.