CN201232701Y - Suction cup - Google Patents

Abstract

The utility model relates to the field of adsorption devices and provides a suction cup. The suction cup in the utility model includes: a handle, a shell, a rubber chassis and a stretching rod fixedly connected with the rubber chassis, wherein the bottom surface of the rubber chassis is provided with at least one annular rubber strip, which is used to fill up the unevenness on the surface of the adsorption body , so that the bottom surface of the rubber chassis and the surface of the absorbing body are completely and closely attached. The suction cup of the utility model enhances the suction force and the durability of the suction cup by filling the unevenness on the surface of the adsorption body.

Description

sucker

technical field

The utility model relates to an adsorption device, in particular to a suction cup.

Background technique

Suction cups are widely used in people's daily life, such as external camera holders for computers, hooks on walls, etc. The principle is to use atmospheric pressure. In specific applications, the sealed space formed between the inside of the suction cup and the adsorbent is increased by external force to form a pressure difference between the inside and outside of the sucker, so that the sucker is fixed on the adsorbent.

The existing sucker, the stretched rubber chassis, its bottom surface is flat, when there are small pits and protrusions on the surface of the adsorbent, it is often not able to fill it completely, which affects the adhesion between the sucker and the surface of the adsorbent. Tightness; moreover, the bottom surface of the plastic shell of the suction cup is flat, and the stretching space of the rubber chassis is limited, so the suction cup has the defects of insufficient adsorption force and insufficient adsorption durability.

Therefore, there is a need for a structure with a large sealing space, which can fill up the unevenness of the surface of the adsorbent, and increase the suction force and durability of the suction cup.

Contents of the invention

One of the purposes of the present utility model is to provide a suction cup, aiming at solving the problems of insufficient adsorption force and insufficient lasting adsorption of the suction cup in the prior art.

In order to achieve the purpose of the utility model, the suction cup includes: a handle, a shell, a rubber chassis and a stretch rod fixedly connected with the rubber chassis, wherein at least one annular rubber strip is provided on the bottom surface of the rubber chassis.

In order to better realize the purpose of the utility model, at least one annular groove is provided on the bottom surface of the housing. When stretching, the rubber chassis can continue to stretch into the groove after contacting the bottom surface.

The bottom surface of the rubber chassis includes at least one annularly distributed rubber strip. When the suction cup is in contact with the surface of the adsorbent, due to the softness of the rubber strip, it can fill up the unevenness of the surface of the adsorbent, for example, fill the grooves on the surface of the adsorbent, Dimples contain bumps or protrusions on the surface of the adsorbent.

It can be seen from the above that the utility model differs from the prior art in the process of stretching the rubber chassis and the adsorption body to seal the space, in that the rubber chassis and the rubber chassis are increased by providing grooves at the bottom of the shell and rubber strips on the bottom surface of the rubber chassis. The sealed space between the adsorbents fills the pits, grooves and protrusions on the surface of the adsorbents, thereby enhancing the adsorption force and durability of the suction cup.

Description of drawings

Fig. 1 is the structural representation of sucker in an embodiment of the utility model;

Fig. 2 is a structural representation of the handle in an embodiment of the utility model;

Fig. 3 is a schematic diagram of the assembly of the handle and the shell in one embodiment of the present invention;

Fig. 4 is a cross-sectional view of part A of the housing in an embodiment of the present invention;

Fig. 5 is a sectional view of part B of the rubber chassis in one embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The utility model fills the unevenness on the surface of the adsorption body by arranging rubber strips on the bottom surface of the rubber chassis and grooves on the bottom surface of the shell, and increases the sealing space inside the suction cup, thereby enhancing the suction force and durability of the suction cup.

Fig. 1 shows the structure of the suction cup in one embodiment of the present invention, the suction cup includes a handle 1, a casing 2, a rubber chassis 4 and a stretch rod 3 fixedly connected with the rubber chassis. in:

(1) The handle 1 is connected with the stretch rod 3 and has a plate-like structure, which is used to bear the force applied by the user, thereby driving the stretch rod 3 to lift the rubber chassis 4 . Its specific structure will be described in detail in the embodiments in Fig. 2 and Fig. 3 described later.

(2) The top surface of the housing 2 is in contact with the handle 1, and the bottom surface is in contact with the rubber chassis 4, forming an inverted T shape. Its specific structure will be described in detail in the embodiment of FIG. 4 described later.

(3) The stretching rod 3 is fixedly connected with the rubber chassis 4 and connected with the handle 1 through the shell 2 .

(4) The rubber chassis 4 is fixedly connected with the stretch rod 3 and is a disk-shaped structure, which is used to contact the surface of the adsorbent and form a stretchable sealed space. The bottom surface of the rubber chassis 4 is provided with at least one annular rubber strip 42 with a square cross-section, which is used to fill up the unevenness of the surface of the adsorbent. Its specific structure will be described in detail in the embodiment of FIG. 5 described later.

Fig. 2 shows the structure of the handle 1 in an embodiment of the present invention, the handle 1 includes a handle 11 and a stretching part 12, wherein the handle 11 is a plate-shaped structure for bearing the user's applied force; The extension part 12 is a disc-shaped cam structure with a longitudinal opening in the middle. The size of the opening is consistent with the size of the positioning surface of the stretching rod 3. It is used to limit the stretching rod 3. On the two side walls of the opening, there are through holes 121 , for connecting the stretch rod 3.

Fig. 3 has shown the assembly relation of handle 1 and shell 2 in one embodiment of the present utility model, when not stretching, the stretching part 12 of handle 1, the contour near the base round end of cam is in contact with the top surface of shell 2, when When the handle 11 is subjected to an external force F, the cam moves along the contour line on the top surface of the housing 2, thereby driving the stretch rod 3 to lift the rubber chassis 4 upward.

Figure 4 shows the structure of the housing 2 in one embodiment of the present invention, the housing 2 is an inverted "T" plastic shell, including a shell body 21 and a bottom 22, the bottom 22 of the housing 2 is a disc-shaped structure, assembled When the bottom surface of the housing 2 is in contact with the rubber chassis 4, at least one annular groove 221 is provided on the bottom surface. When the stretch rod 3 drives the rubber suction cup 4 to lift upward, it can continue to stretch into the groove 221, thereby increasing the rubber chassis. The airtight space with the surface of the adsorbent.

Fig. 5 has shown the structural representation of rubber sucker 4 in one embodiment of the present utility model, and the bottom surface of rubber chassis 4 is provided with at least one annular rubber strip 42, and its cross-section is square, and width is 0.5～1mm, when absorbing body surface has small In the case of pits or bumps, since the rubber strip 42 has a small surface area and is easily deformed, it can fill up the small pits or bumps, so that the bottom surface of the rubber chassis and the surface of the absorbing body are closely attached.

Regarding the section width value of rubber strip 42, there are multiple schemes: in one embodiment, the width of rubber strip is 0.5mm; In another embodiment, the width of rubber strip is 0.8mm; In yet another embodiment, The width of the rubber strip is 1mm. For different adsorbents, the pits or protrusions on the surface have different sizes and distributions, so the width value can be set according to specific situations. The above examples are not intended to limit the protection scope of the present utility model.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. A suction cup, comprising a handle, a shell, a rubber chassis and a stretch rod fixedly connected to the rubber chassis, the bottom surface of the rubber chassis is in contact with the surface of the absorbing body, and the stretch rod passes through the shell and is connected to the handle. That is, the bottom surface of the rubber chassis is provided with at least one ring-shaped rubber strip for filling the uneven surface of the absorbing body, and its cross-section is square. 2. The suction cup according to claim 1, wherein the rubber strip is a protrusion with a square cross section. 3. The suction cup according to claim 2, wherein the width of the protrusion is 0.5-1mm. 4. The suction cup according to claim 1, wherein at least one annular groove is provided on the bottom surface of the housing. 5. The suction cup according to claim 1, wherein a hole is formed at the center of the top of the housing, and the cross-sectional shape of the hole includes at least a straight line segment. 6. The suction cup according to claim 1, wherein the handle includes a handle and a stretching part, and the stretching part is a disc-shaped cam structure connected with a stretching rod for stretching the rubber chassis .

Images