Structure for improving binding force of shower head surface cover and soft glue water nozzle and shower head

Abstract

The utility model provides a structure for improving the binding force between a shower head surface cover and a soft glue nozzle, which is characterized in that the soft glue nozzle is arranged on the back of the shower head surface cover, and the back of the shower head surface cover protrudes outwards along the thickness direction to form a plurality of steps which are used for increasing the contact area between the back of the shower head surface cover and the soft glue nozzle. The utility model further provides a shower head. The structure for improving the binding force of the surface cover and the soft glue nozzle of the shower head is used for the surface cover and the soft glue nozzle of the shower head.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bathroom product, especially a shower head. BACKGROUND

[0002] Soft glue nozzle (such as TPR, TPE, silica gel) and shower head cover (hard glue plastic) are bonded together, which is called bagging (also called encapsulation, overmolding) etc. The bonding effect between the two depends on the polarity difference of the two materials and the surface tension of the plastic. Ordinary TPR has good bonding effect with ABS, PP, PC, etc. However, some materials such as POM are difficult to encapsulate. First, they have good self-lubricating properties, and the surface tension is high, making it difficult for soft glue nozzle (such as TPE) to spread quickly on the surface of POM material. Second, POM material has high cohesive energy density, making it difficult for high-temperature TPE melt to form a molten ablation layer at the overmolding interface. On the market, the main way to achieve encapsulation with hard materials such as POM is to change the soft glue nozzle material. First, the material cost is high, and second, it does not meet the requirements of relevant certifications. SUMMARY

[0003] The main technical problem to be solved by the utility model is to provide a structure for improving the bonding force between the shower head cover and the soft glue nozzle, which is relatively low in cost.

[0004] To solve the above technical problems, the utility model provides a structure for improving the bonding force between the shower head cover and the soft glue nozzle, which comprises: the soft glue nozzle is arranged on the back of the shower head cover, and the back of the shower head cover is outwardly convex along the thickness direction to form a plurality of steps for increasing the contact area between the back of the shower head cover and the soft glue nozzle.

[0005] In a preferred embodiment: the plurality of steps are arranged in a concentric circle shape.

[0006] In a preferred embodiment: the steps are closed polygons.

[0007] In a preferred embodiment: the back of the shower head cover extends a plurality of ribs outward from the center to divide the back of the shower head cover into a plurality of regions along the circumferential direction.

[0008] In a preferred embodiment: a plurality of steps are arranged in each of the regions.

[0009] In a preferred embodiment: the back of the shower head cover is provided with a pattern for increasing roughness.

[0010] In a preferred embodiment: the back of the shower head cover is inwardly recessed along the thickness direction to form a plurality of grooves.

[0011] In a preferred embodiment: the back of the shower face cover is provided with a plurality of positioning openings along the thickness direction, the soft rubber water nozzle includes a fitting portion attached to the back of the shower face cover, and a water nozzle portion passing through the positioning openings.

[0012] In a preferred embodiment: the water nozzle portion is exposed in the front of the shower face cover, and a convex edge extending radially outward is formed to limit the cooperation with the shower face cover.

[0013] The present application also provides a shower, the face cover and the soft rubber water nozzle of which use the structure for improving the bonding force of the shower face cover and the soft rubber water nozzle as described above.

[0014] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0015] The present application provides a structure for improving the bonding force of the shower face cover and the soft rubber water nozzle, which is aimed at the poor bonding performance of the shower face cover and the soft rubber water nozzle and the easy separation in the cold and hot cycle. The back of the shower face cover is divided into multiple regions, which reduces the mutual pulling of the soft rubber water nozzle between adjacent water outlets caused by the large-area shrinkage of the soft rubber water nozzle during cooling. A plurality of steps are arranged on the back of the shower face cover to increase the contact area of the shower face cover and the soft rubber water nozzle and enhance the bonding therebetween. In addition, grooves are arranged on the back of the shower face cover. Due to the different thermal expansion and cold shrinkage coefficients of the soft rubber water nozzle and the face cover, the soft rubber water nozzle and the face cover are prone to separation at the edges during the cold and hot cycle. The grooves of the face cover can buffer and absorb the deformation of the soft rubber water nozzle and the face cover at the grooves. Meanwhile, the soft rubber water nozzle is more firmly attached to the face cover under the action of water pressure. In addition, the shower face cover is provided with a patterned surface for increasing roughness to increase the friction between the shower face cover and the soft rubber water nozzle and enhance the bonding therebetween. Finally, the water nozzle portion of the soft rubber water nozzle is extended radially outward to form a convex edge, which is limited to cooperate with the shower face cover to prevent loosening. The above-mentioned structure is relatively simple, does not require the material of the soft rubber water nozzle, and can reduce the cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the preferred embodiment of the present application;

[0017] Figure 2 It is a sectional view of the preferred embodiment of the present application;

[0018] Figure 3 It is an exploded view of the preferred embodiment of the present application;

[0019] Figure 4 It is a schematic view of the shower face cover in the preferred embodiment of the present application;

[0020] Figure 5 It is a sectional view of the shower face cover in the preferred embodiment of the present application;

[0021] Figure 6 It is the schematic view after the soft glue water nozzle is installed on the shower face cover in the preferred embodiment of the utility model;

[0022] Figure 7 It is the schematic view before the soft glue water nozzle is installed on the shower face cover in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0024] In the description of the utility model, it needs to be explained that, unless there are explicit provisions and limitations, the terms "installation", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be wall-mounted connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be direct connection, can be indirect connection through an intermediate medium, can be the intercommunication of two elements, and for those skilled in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Reference Figures 1-7 The embodiment provides a shower, which comprises a water inlet seat 1, a body 2, a shower face cover 3 and a soft glue water nozzle 4; the shower face cover 3 is combined with the body 2 to form a region for containing the soft glue water nozzle 4, so that the soft glue water nozzle 4 is arranged at the back of the shower face cover 3; the water inlet seat 1 is swing-connected with the body 2 through a ball head 5; a plurality of accommodating openings 32 are arranged through the back of the shower face cover 3 along the thickness direction, the soft glue water nozzle 4 comprises a fitting portion 41 attached to the back of the shower face cover 3 and a water nozzle portion 42 passing through the accommodating opening 32.

[0026] In order to avoid the separation of the soft glue water nozzle 4 and the shower face cover 3, the embodiment is provided with a structure for improving the combination force of the shower face cover 3 and the soft glue water nozzle 4, which comprises that the back of the shower face cover 3 is outwardly protruded along the thickness direction to form a plurality of steps 31; since the soft glue water nozzle 4 is arranged at the back of the shower face cover 3, the protruding steps 31 are arranged at the back of the shower face cover 3, so that the contact area of the back of the shower face cover 3 and the soft glue water nozzle 4 is increased, and thus the combination force of the shower face cover 3 and the soft glue water nozzle 4 is increased.

[0027] In this embodiment, in order to enhance the binding force between the shower cover 3 and the soft glue nozzle 4 at each position, the plurality of steps 31 are arranged in concentric circles, and the steps 31 are closed quadrilaterals, which can also be replaced by other shapes as a simple alternative.

[0028] The back of the shower cover 3 extends a plurality of convex ribs 33 from the center outward, so as to divide the back of the shower cover 3 into a plurality of regions along the circumference. If not divided into regions, the soft glue nozzle will shrink in a large area when cooled after injection molding, which will cause the nozzle part 42 of the soft glue nozzle 4 to be pulled, thereby causing the nozzle part 42 to be deformed and the water outlet angle to be offset. After dividing the back of the shower cover 3 into a plurality of regions, the pulling force between the water outlet parts of the soft glue nozzle 4 can be greatly reduced.

[0029] Other structures can also be provided to further increase the binding force, such as providing patterns on the back of the shower cover 3 for increasing roughness, thereby increasing the friction between the shower cover 3 and the soft glue nozzle 4 to enhance the adhesion between them. In addition, the back of the shower cover 3 is recessed inward along the thickness direction to form a plurality of grooves 34. This is because the soft glue nozzle 4 and the shower cover 3 are prone to separation at the edge due to different thermal expansion and contraction coefficients of the shower cover 3 and the soft glue nozzle 4 during cold and hot cycles. The back of the shower cover 3 is recessed to form grooves 34, so that the deformation of the two is buffered and absorbed at the grooves 34; at the same time, the soft glue nozzle 4 at the grooves 34 is more firmly attached to the shower cover 3 under the action of water pressure.

[0030] Finally, the nozzle part 42 is exposed in the part of the front of the shower cover 3, and a convex edge 43 extending outward along the radial direction is provided for limiting cooperation with the shower cover 3. In this way, a limiting force is provided when the soft glue nozzle 4 and the shower cover 3 are separated, achieving the effect of preventing loosening.

[0031] The above is only a preferred specific embodiment of the present application, and is not a limitation on the patent range of the present application. Any technical equivalent transformation made by using the content of the present application is within the protection scope of the present application.

Claims

1. A structure for improving the bonding strength between the shower head cover and the soft glue nozzle, characterized in that include: The soft glue water nozzle is arranged on the back of the shower head cover, and the back of the shower head cover is convex outward along the thickness direction to form a plurality of steps, which are used to increase the contact area between the back of the shower head cover and the soft glue water nozzle.

2. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 1, characterized in that: The multiple steps are arranged in concentric circles.

3. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 1, characterized in that: The step is a closed polygon.

4. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 1, characterized in that: The back of the shower head cover has a plurality of convex ribs extending outward from the center, so as to divide the back of the shower head cover into a plurality of areas along the circumferential direction.

5. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 4, characterized in that: A plurality of steps are respectively provided in each of the regions.

6. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 1, characterized in that: The back of the shower head cover is provided with a pattern for increasing roughness.

7. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 6, characterized in that: The back of the shower head cover is recessed inwardly along the thickness direction to form a plurality of grooves.

8. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 1, characterized in that: The back of the shower head cover is provided with a plurality of clearance openings along the thickness direction, and the soft glue water nozzle comprises a fitting portion attached to the back of the shower head cover and a water nozzle portion passing through the clearance openings.

9. The structure for improving the bonding strength between a shower head cover and a soft glue nozzle according to claim 8, characterized in that: The water nozzle is exposed in the front part of the shower head cover, and a convex edge is extended outward in the radial direction to cooperate with the shower head cover in a limiting manner.

10. A shower head, characterized by: The shower head cover and the soft glue water nozzle use the structure for improving the bonding strength between the shower head cover and the soft glue water nozzle as described in any one of claims 1 to 9.

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