Manual suction cup

Abstract

The utility model relates to a manual sucker with good suction force, high reliability and high manual efficiency, which comprises a sucker and a handle, the sucker and a connecting rod are connected into a whole, one or more circles of elastic sealing rings are arranged on the periphery of the suction surface of the sucker, a sucker step is arranged in the center of the sucker, and an annular groove is formed between the sucker step and the one or more circles of elastic sealing rings. The connecting rod penetrates through a middle hole of the auxiliary shell and is connected with the handle through a pin, and the lower end face of the auxiliary shell makes contact with the suction cup face. The manual suction cup has the advantages that the manual suction cup designed according to the atmospheric pressure difference is large in attached pressure suction force, reliable in suction force, rapid and convenient to operate and high in efficiency during use.

Description

Technical Field

[0001] This utility model relates to a manual suction cup with good suction power, high reliability and high manual efficiency, belonging to the field of manual suction cup manufacturing. Background Technology

[0002] CN105151387A, entitled "A Manual Suction Cup for a Film Applying Machine," includes a cylindrical cavity, a spiral rod, a cross-shaped handle, and an internal suction cup. The cylindrical cavity is a hollow structure closed at one end. A mounting hole is provided at the center of the closed end. Threads are machined into the mounting hole. The spiral rod is fitted into the mounting hole. The top of the spiral rod is fixed to the cross-shaped handle. The bottom of the spiral rod is fixed to the internal suction cup. The internal suction cup is fitted into the cylindrical cavity with a transition fit. An axial guide groove is provided on the inner wall of the cylindrical cavity. A protrusion that mates with the guide groove is provided on the edge of the internal suction cup. This provides a manual suction cup for a film applying machine. This structure is compact, lightweight, easy to use, and easy to manufacture. It is non-magnetic and interference-free, especially suitable for use in film applying machines with electronic equipment, and can improve work efficiency. Its shortcomings are: poor suction reliability and low efficiency. Summary of the Invention

[0003] Design objective: To overcome the shortcomings of the prior art and design a manual suction cup with good suction power, high reliability and high manual efficiency.

[0004] Design Scheme: To achieve the above design objectives, this utility model utilizes the principle of atmospheric pressure as the basis for its manual suction cup design, employing a cam and lever principle for rapid suction and release. Therefore, the suction cup in this utility model is made of a dual-hardness flexible material: 1. In the normal state, i.e., when the handle is not in use, the suction cup does not deform and has no suction components. 2. In the suction state, i.e., when the handle is pressed down, the suction cup is pulled upwards, forcing the auxiliary housing to block the suction cup's perimeter. The sealing ring around the suction cup no longer moves upwards and remains firmly attached to the surface of the object being suctioned. This creates a certain negative pressure at the center of the suction cup, firmly holding the object in place.

[0005] Technical solution: A manual suction cup includes a suction cup and a handle. The suction cup and the connecting rod are integrated. The suction cup has one or more elastic sealing rings around its suction surface. The suction cup has a suction cup step at its center. The suction cup step and the one or more elastic sealing rings form an annular groove. A return spring is sleeved on the connecting rod. The connecting rod passes through the middle hole of the auxiliary housing and is connected to the handle by a pin. The lower end face of the auxiliary housing is in contact with the suction cup surface.

[0006] Compared with the prior art, the manual suction cup designed by this invention using atmospheric pressure difference not only has a strong and reliable suction force when used on flat and uneven surfaces, but is also quick, convenient and efficient to operate. Attached Figure Description

[0007] Figure 1 This is a cross-sectional view of the suction cup in its normal state.

[0008] Figure 2 This is a cross-sectional view of the structure under suction cup adsorption.

[0009] Figure 3 This is a schematic diagram showing the connection between the connecting rod and the suction cup after they are combined.

[0010] Figure 4 yes Figure 1 A schematic diagram of the decomposition of the middle part of the structure. Detailed Implementation

[0011] Example 1: Refer to Appendix Figure 1-4 A manual suction cup includes a suction cup 1 and a handle 7. The suction cup 1 and a connecting rod 2 are integrated. One or more elastic sealing rings 11 surround the suction surface of the suction cup to achieve a progressively protective sealing effect under negative pressure. A suction cup step 13 is located at the center of the suction cup, forming an annular groove 14 between the suction cup step 13 and the one or more elastic sealing rings 11. A return spring 3 is fitted onto the connecting rod 2, which has a U-shaped cross-section. The connecting rod 2 passes through the central hole of an auxiliary housing 4 and is connected to the handle 7 by a pin 6. The lower end face of the auxiliary housing 4 contacts the surface of the suction cup 1. An adjusting shim 5 is fitted onto the connecting rod 2 between the auxiliary housing 4 and the handle 7 to adjust the upward adjustment distance of the connecting rod 2. The suction cup 1 is made of two materials with different hardnesses: a harder middle material and relatively softer outer materials. Its manufacturing process is existing technology and will not be described here.

[0012] See attached document Figure 3 The purpose of having one or more elastic sealing rings 11 around the suction surface of the suction cup is that the design of multiple elastic sealing rings can achieve a sealing effect under negative pressure conditions with progressive protection, solving the problems of insufficient suction and poor reliability of traditional flat suction cups without circumference (sealing rings). At the same time, the multiple elastic sealing rings can produce a good adsorption effect when adsorbing objects with certain concave and convex surfaces, filling a market gap.

[0013] See attached document Figure 3The purpose of designing the central protrusion 12 of the suction cup 1 to be higher than the surrounding elastic sealing rings 11 is to prevent the suction cup from sealing against the surface of the object it is in contact with under normal conditions. This prevents the suction cup 1 from forming a seal with the surface it is in contact with (such as a ceramic tile surface, marble surface, or glass surface) under normal conditions, thus avoiding difficulties in picking up or moving the suction cup due to a sealed contact. The height of the central protrusion 12 above the surrounding elastic sealing rings 11 is less than 1 mm.

[0014] See attached document Figure 3 The purpose of designing the central step 13 of the suction cup to be at the same height as the perimeter 11 of the suction cup is twofold: firstly, to ensure that the lower end of the connecting rod is well covered during the suction cup manufacturing stage, so that the connecting rod 2 and the suction cup 1 form an integral structure; secondly, because the presence of the central step surface of the suction cup reduces the air on the suction surface of the suction cup, the suction force of the suction cup can be increased when the suction cup is pulled up by the connecting rod.

[0015] The handle 7 and pin 6 are composed of long and short sides. Under normal conditions, the short side is used, preventing deformation and lifting of the suction cup. (See...) Figure 1 During adsorption, the handle switches from the short side to the long side, and the suction cup deforms (deformation occurs after lifting), see [link / description]. Figure 2 .

[0016] The suction cup 1 described in this utility model can be either circular or rectangular.

[0017] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of this utility model, these textual descriptions are merely simple textual descriptions of the design concept of this utility model, and not limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model shall fall within the protection scope of this utility model.

Claims

1. A manual suction cup, comprising a suction cup (1) and a handle (7), characterized in that: The suction cup (1) and the connecting rod (2) are connected as one unit. There is one or more elastic sealing rings (11) around the suction surface of the suction cup. There is a suction cup step (13) in the center of the suction cup. The suction cup step (13) and the one or more elastic sealing rings (11) form an annular groove (14). The reset spring (3) is sleeved on the connecting rod (2). The connecting rod (2) passes through the middle hole of the auxiliary housing (4) and is connected to the handle (7) by a pin (6). The lower end face of the auxiliary housing (4) is in contact with the surface of the suction cup (1).

2. The manual suction cup according to claim 1, characterized in that: The connecting rod (2) between the auxiliary housing (4) and the handle (7) is fitted with an adjusting shim (5).

3. The manual suction cup according to claim 1, characterized in that: The suction cup (1) is made of two materials with different hardness, the middle one being hard and the two sides being relatively soft.

4. The manual suction cup according to claim 1, characterized in that: The cross section of the connecting rod (2) is shaped like the Chinese character "⊥".

5. The manual suction cup according to claim 1, characterized in that: The central boss (12) of the suction cup (1) is higher than the surrounding area and higher than the suction cup step surface.

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