A scale body shell bonded by stainless steel and plastic and bonding method thereof

Abstract

The present invention discloses a scale body shell formed by bonding stainless steel and plastic and a bonding method thereof, comprising the steps of arranging a stainless steel face shell on the outer side of a plastic face shell, and arranging a plurality of double-sided adhesives between the outer side of the plastic face shell and the inner side of the plastic face shell for bonding; injecting adhesive into the connecting through holes of the plastic face shell from the lower side of the plastic face shell; allowing the adhesive to solidify to form an adhesive part after being left for a certain period of time, and the upper side of the adhesive part is bonded to the inner side of the stainless steel face shell, and the side of the adhesive part is provided with an adhesive part groove which is buckled and connected to the connecting through hole of the plastic face shell, so that the stainless steel face shell and the plastic face shell are firmly connected and will not fall off.

Description

[Technical field]

[0001] The invention relates to a scale body shell bonded by stainless steel and plastic and a bonding method thereof. [Background Technology]

[0002] At present, for electronic scales with stainless steel shells on the market, it is a difficult problem to fix the stainless steel on the plastic surface shell without it falling off or warping, especially for stainless steel with curved surface. Since stainless steel is an elastic material, most of the stainless steel molds will rebound and deform after forming.

[0003] The existing method to solve this problem is to directly bond the stainless steel face shell to the plastic face shell with a thicker double-sided tape. However, when encountering stainless steel with a curved surface, due to its large rebound deformation, a gap is created between the stainless steel face shell and the plastic face shell that exceeds the designed thickness of the double-sided tape, resulting in a gap that cannot be glued together, or the stainless steel face shell has a large rebound deformation force and cannot be glued firmly, resulting in hollowness between the stainless steel face shell and the plastic face shell, and debonding and warping of the edges, resulting in an unsightly product appearance, low yield rate, and even cuts on users.

[0004] Another existing method to solve this problem is to set a plurality of tongues on the edge of the stainless steel, open through holes at the corresponding positions of the plastic face shell and the tongues, insert the stainless steel tongues into the through holes of the plastic face shell, and then bend the tongues to form a dead buckle and connect them to the plastic face shell. Although this method can solve the problem of falling off, the tongues set on the edge of the stainless steel face shell will increase the use area of ​​the stainless steel raw material, thereby increasing the material cost. At the same time, the through holes set on the plastic face shell that cooperate with the tongues require high positioning accuracy and a large aperture to facilitate the assembly of the two. However, a large aperture will result in an obvious visible gap after assembly, which directly reduces the grade of the product. Furthermore, the bending of the stainless steel tongues is laborious and inefficient, and when the bending height or angle is insufficient, it is easy to cause a loose fit, resulting in a large gap between the stainless steel face shell and the plastic face shell. [Summary of the invention]

[0005] The invention overcomes the shortcomings of the prior art and provides a scale body shell bonded by stainless steel and plastic and a bonding method thereof.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A scale body shell made of stainless steel and plastic bonded together, characterized in that it includes a plastic face shell and a stainless steel face shell arranged on the outer side of the plastic face shell, the plastic face shell is provided with a plurality of plastic face shell connecting through holes, an adhesive part formed by filling and curing an adhesive is provided in the plastic face shell connecting through holes, the upper side of the adhesive part is bonded to the inner side of the stainless steel face shell, and the side of the adhesive part is provided with an adhesive part groove that is buckled and connected to the plastic face shell connecting through holes.

[0008] The scale body shell bonded by stainless steel and plastic as described above is characterized in that the adhesive part is formed by filling adhesive into the through hole connecting the plastic surface shell and curing it.

[0009] The scale body shell made of stainless steel and plastic bonded together as described above is characterized in that a plurality of double-sided adhesive parts are arranged between the plastic surface shell and the stainless steel surface shell.

[0010] The scale body shell made of stainless steel and plastic bonded together as described above is characterized in that the upper side and lower side of the plastic face shell are located outside the plastic face shell connecting through hole and are respectively provided with surrounding upper side ribs and lower side ribs, and the upper end and lower end of the adhesive part are respectively arranged in the upper side ribs and the lower side ribs.

[0011] The scale body shell bonded by stainless steel and plastic as described above is characterized in that the adhesive is an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive.

[0012] A method for bonding a scale body by bonding stainless steel and plastic, characterized in that: it includes a plastic surface shell and a stainless steel surface shell, and the plastic surface shell is provided with a plurality of plastic surface shell connecting through holes, and the method steps are as follows:

[0013] S1. The stainless steel face shell is arranged on the outer side of the plastic face shell, and a plurality of double-sided adhesive members are arranged between the outer side of the plastic face shell and the inner side of the plastic face shell for bonding;

[0014] S2, injecting adhesive into the connecting through holes of the plastic cover from the lower side of the plastic cover;

[0015] S3. Allow the adhesive to solidify for a period of time to form an adhesive part, wherein the upper side of the adhesive part is bonded to the inner side of the stainless steel cover, and the side of the adhesive part is provided with an adhesive part groove that is buckled with the through hole connecting the plastic cover.

[0016] The bonding method of a scale body made of stainless steel and plastic as described above is characterized in that: the upper side surface and the lower side surface of the plastic face shell are located outside the connecting through hole of the plastic face shell and are respectively provided with upper side ribs and lower side ribs arranged around them; when the adhesive is injected, the adhesive fills the cavity formed by the upper side ribs and the lower side ribs respectively, so that the upper end and the lower end of the cured adhesive are respectively arranged in the upper side ribs and the lower side ribs.

[0017] The bonding method of a scale body by bonding stainless steel and plastic as described above is characterized in that the adhesive is a paste adhesive or a semi-fluid adhesive.

[0018] The bonding method for bonding a scale body by bonding stainless steel and plastic as described above is characterized in that the adhesive is an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive.

[0019] The bonding method of a scale body by bonding stainless steel and plastic as described above is characterized in that: the adhesive is an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive; and the double-sided adhesive is a double-sided tape.

[0020] The beneficial effects of the present invention are:

[0021] The present invention sets a double-sided adhesive piece between the stainless steel face shell and the plastic face shell for preliminary connection, and then fills the adhesive in the connecting through hole of the plastic face shell and solidifies to form an adhesive piece with an I-shaped cross-section and strong bonding force with stainless steel, so that the upper side of the adhesive piece is bonded to the inner side of the stainless steel face shell, and the adhesive piece groove on the side is buckled and connected with the connecting through hole of the plastic face shell, so that the stainless steel face shell is firmly bonded to the plastic face shell, ensuring that the stainless steel face shell and the plastic face shell are firmly connected and do not fall off, without setting a tongue and a socket, reducing material cost and manual bending cost, and no gap will appear on the outer side of the face shell to affect the aesthetics, and also solves the problem of stainless steel warping and cutting hands; at the same time, the adhesive piece has slight elasticity, so that the I-shaped upper side of the adhesive piece changes with the shape of the inner surface curve of the stainless steel face shell, so that the I-shaped upper side of the adhesive piece is seamlessly attached to the inner surface of the stainless steel face shell and firmly bonded. [Drawings]

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is one of the exploded views of the present invention;

[0024] Figure 3 This is the second exploded view of the present invention;

[0025] Figure 4 This is a schematic diagram of the bottom of the plastic cover of the present invention;

[0026] Figure 5 An exploded view of an electronic scale to which the present invention is applied;

[0027] Figure 6 A schematic diagram of an electronic scale to which the present invention is applied;

[0028] Figure 7 for Figure 6 Middle AA section view. [Specific implementation method]

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0031] like Figure 1-7 As shown, a scale body shell made of stainless steel and plastic bonded together includes a plastic shell 1 and a stainless steel shell 2 arranged on the outer side of the plastic shell 1, and the plastic shell 1 is provided with a plurality of plastic shell connecting through holes 11, and the plastic shell connecting through holes 11 are provided with adhesives filled and cured to form an I-shaped cross section and having strong bonding force with stainless steel. The upper side of the adhesive 3 is bonded to the inner side of the stainless steel shell 2, and the side of the adhesive 3 is provided with an adhesive groove 31 that is buckled and connected to the plastic shell connecting through holes 11. Among them, the adhesive 3 is an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive. In actual application, the strong bonding force between adhesive and stainless steel is utilized to make the upper side surface of the cured adhesive 3 firmly bonded to the inner side surface of the stainless steel face shell 2. At the same time, the adhesive groove 31 on the side is buckled with the edge of the plastic face shell connecting through hole 11, so that the adhesive 3 and the plastic face shell 1 are tightly buckled together, so that the plastic face shell 1 and the stainless steel face shell 2 are firmly connected and will not fall off. There is no need to set a tongue and a socket, which reduces the material cost and the manual bending cost. There is no gap on the outer side of the face shell to affect the aesthetics, and the problem of stainless steel warping and cutting hands is solved.

[0032] like Figure 2-3 As shown, a plurality of double-sided adhesive members 4 are provided between the plastic shell 1 and the stainless steel shell 2. The double-sided adhesive members 4 are double-sided adhesive tapes, preferably foam double-sided adhesive tapes. In actual application, the foam double-sided adhesive tapes are distributed between the plastic shell 1 and the stainless steel shell 2, and the plastic shell 1 and the stainless steel shell 2 are initially bonded and fixed by the foam double-sided adhesive tape, so that the adhesive is subsequently filled into the plastic shell connection through hole 11 to form the adhesive member 3.

[0033] like Figure 2-4 and Figure 7As shown, the upper and lower sides of the plastic shell 1 are respectively provided with an upper rib 12 and a lower rib 13 surrounding the plastic shell connecting through hole 11, and the upper end and the lower end of the adhesive part 3 are respectively arranged in the upper rib 12 and the lower rib 13. In actual application, the upper and lower sides of the plastic shell 1 are respectively provided with an adhesive filling cavity, and the adhesive part 3 with an I-shaped cross section is formed after the adhesive is cured, and an adhesive part groove 31 is generated on the side of the adhesive part 3 to be buckled with the plastic shell connecting through hole 11, so that the adhesive part 3 is buckled and connected with the plastic shell connecting through hole 11. On the other hand, the upper ribs 12 and the lower ribs 13 can limit the amount of adhesive filling, saving costs; at the same time, the adhesive part 3 has a slight elasticity, and the I-shaped upper side of the adhesive part changes with the inner surface of the stainless steel shell, so that the I-shaped upper side of the adhesive part is seamlessly attached to the inner surface of the stainless steel shell and firmly bonded. Among them, the adhesive is an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive, which can form an organic silicone adhesive part, a polyurethane adhesive part and a two-component epoxy adhesive part respectively after curing.

[0034] like Figure 1-6 As shown, the plastic face shell 1 is provided with a plastic face shell mounting through hole 14, and the inner side surface of the plastic face shell mounting through hole 14 is provided with a plurality of connecting protrusions 15; the stainless steel face shell 2 is provided with a stainless steel face shell through hole 21 corresponding to the plastic face shell mounting through hole 14; the lower side of the plastic face shell 1 is connected to a bottom shell 5, and the inner side surface of the bottom shell 5 is provided with a plurality of connecting bosses 51 corresponding to the connecting protrusions 15; the inner side of the plastic face shell mounting through hole 14 is provided with a plurality of mounting through hole side panels 16 extending downward, and the connecting protrusion 15 is arranged on the mounting through hole side panel 16, so that the connecting protrusion 15 and the connecting boss 51 can be better correspondingly connected; the connecting protrusion 15 and the connecting boss 51 are connected by screws. When assembling the bottom shell of the scale body, the assembled plastic face shell 1 and stainless steel face shell 2 are glued and covered on the bottom shell 5. At this time, the connecting protrusions 15 are respectively connected to the corresponding connecting protrusions 51 on the bottom shell 5, and then the connecting protrusions 15 and the connecting protrusions 51 are threadedly connected and locked with screws to form a whole, thereby realizing the quick assembly connection of the scale body shell.

[0035] In this case, a method for bonding a scale body by bonding stainless steel and plastic is provided, and the steps are as follows:

[0036] S1. Set the stainless steel face shell 2 on the outer side of the plastic face shell 1, and set multiple double-sided adhesives 4 between the outer side of the plastic face shell 1 and the inner side of the plastic face shell 1 to make the plastic face shells 1 initially connected to each other so that the two do not open and displace relative to each other; wherein the double-sided adhesive 4 is preferably a foam double-sided tape.

[0037] S2, injecting paste or semi-fluid adhesive into the plastic cover connecting through hole 11 from the lower side of the plastic cover 1, until the cavity formed by the upper side rib 12 and the lower side rib 13 is filled, and at this time, after the upper side rib 12 is filled, the adhesive contacts the inner side of the stainless steel cover 2;

[0038] S3. Leave it for about 24 hours to allow the adhesive to solidify and form an adhesive part 3 with an I-shaped cross-section and strong bonding force with stainless steel. At this time, the upper side of the solidified adhesive part 3 is firmly bonded to the inner side of the stainless steel face shell 2, and at the same time, the adhesive part groove 31 is buckled with the edge of the plastic face shell connecting through hole 11, so that the adhesive part 3 and the plastic face shell 1 are tightly buckled and connected, so that the plastic face shell 1 and the stainless steel face shell 2 are firmly connected and will not fall off, effectively solving the common problems of deformation and debonding and warping after the stainless steel face shell and the plastic face shell are connected.

[0039] In the method, the adhesive is preferably an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive. At the same time, the organic silicone adhesive, the polyurethane adhesive or the two-component epoxy adhesive can form an organic silicone adhesive part, a polyurethane adhesive part and a two-component epoxy adhesive part respectively after curing.

[0040] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A scale housing made of stainless steel and plastic, characterized in that: The invention comprises a plastic face shell (1) and a stainless steel face shell (2) arranged on the outer side of the plastic face shell (1), wherein the plastic face shell (1) is provided with a plurality of plastic face shell connecting through holes (11), wherein the plastic face shell connecting through holes (11) are provided with adhesive parts (3) formed by filling adhesive and curing, wherein the upper side of the adhesive part (3) is bonded to the inner side of the stainless steel face shell (2), and the side of the adhesive part (3) is provided with adhesive part grooves (31) which are buckled and connected to the plastic face shell connecting through holes (11).

2. The scale housing made of stainless steel and plastic bonded together according to claim 1, characterized in that: The adhesive part (3) is formed by filling the plastic cover connecting through hole (11) with adhesive and curing the adhesive.

3. The scale housing made of stainless steel and plastic bonded together according to claim 1, characterized in that: A plurality of double-sided adhesive components (4) are provided between the plastic surface shell (1) and the stainless steel surface shell (2).

4. The scale housing made of stainless steel and plastic bonded together according to claim 1, characterized in that: The upper side and lower side of the plastic shell (1) are respectively provided with an upper side rib (12) and a lower side rib (13) arranged around the plastic shell connecting through hole (11), and the upper end and the lower end of the adhesive part (3) are respectively arranged in the upper side rib (12) and the lower side rib (13).

5. A scale housing made of stainless steel and plastic bonded together according to claim 1 or 4, characterized in that: The adhesive member (3) is an organic silicone adhesive member, a polyurethane adhesive member or a two-component epoxy adhesive member.

6. A method for bonding a scale body by bonding stainless steel and plastic, characterized in that: The method comprises a plastic shell (1) and a stainless steel shell (2), wherein the plastic shell (1) is provided with a plurality of plastic shell connecting through holes (11), and the method comprises the following steps: S1, placing the stainless steel face shell (2) on the outer side of the plastic face shell (1), and placing a plurality of double-sided adhesive members (4) between the outer side of the plastic face shell (1) and the inner side of the plastic face shell (1) for bonding; S2, injecting adhesive into the plastic cover connecting through holes (11) from the lower side of the plastic cover (1); S3. Allow the adhesive to solidify for a certain period of time to form an adhesive member (3), wherein the upper side of the adhesive member (3) is bonded to the inner side of the stainless steel cover (2), and the side of the adhesive member (3) is provided with an adhesive member groove (31) that is snap-fitted to the connecting through hole (11) of the plastic cover.

7. A method for bonding a scale body by bonding stainless steel and plastic according to claim 6, characterized in that: The upper side and lower side of the plastic shell (1) are respectively provided with an upper side rib (12) and a lower side rib (13) arranged around the plastic shell connecting through hole (11); when the adhesive is injected, the adhesive fills the cavity formed by the upper side rib (12) and the lower side rib (13), so that the upper end and the lower end of the cured adhesive part (3) are respectively arranged in the upper side rib (12) and the lower side rib (13).

8. A method for bonding a scale body by bonding stainless steel and plastic according to claim 6 or 7, characterized in that: The adhesive is a paste adhesive or a semi-fluid adhesive.

9. The method for bonding a scale body by bonding stainless steel and plastic according to claim 8, characterized in that: The adhesive is organic silicone adhesive, polyurethane adhesive or two-component epoxy adhesive.

10. The method for bonding a scale body by bonding stainless steel and plastic according to claim 6, characterized in that: The adhesive (3) is an organic silicone adhesive, a polyurethane adhesive or a two-component epoxy adhesive; The double-sided adhesive member (4) is a double-sided adhesive.

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