Bonding structure, camera assembly and electronic device

Abstract

The application discloses a kind of bonding structures, the camera assembly comprising this bonding structure and the electronic equipment comprising this camera assembly.The bonding structure of the application has first fixing part and second fixing part, first fixing part has inner cavity, the inner periphery of inner cavity has first bonding surface, second fixing part includes plug-in part, the outer periphery of plug-in part has second bonding surface, first bonding surface is set to: the inner diameter of inner cavity gradually increases along the direction of second fixing part into inner cavity, second bonding surface is set to: the outer diameter of plug-in part gradually decreases along the direction of second fixing part into inner cavity, the bonding structure further includes the adhesive member bonded with first bonding surface and second bonding surface respectively.The bonding structure of the application increases the bonding strength between adhesive and first fixing part and second fixing part, so that structure is more stable.

Description

Technical Field

[0001] This invention relates to the field of electronic camera equipment, and in particular to an adhesive structure, a camera assembly including the adhesive structure, and an electronic device including the camera assembly. Background Technology

[0002] In related technologies, the bonding structure between the lens and the housing in a camera is often manufactured using a direct dispensing method. However, during the manufacturing process, issues such as poor adhesion of the housing coating, insufficient cleaning of oil stains on the lens and housing, or slight changes in the properties of the adhesive can easily occur. This results in insufficient bonding strength between the lens and the housing, leading to unstable camera performance. Consequently, the camera lens may detach from the housing during driving, posing a safety hazard and preventing the driver from judging the road conditions behind, thus endangering traffic safety. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an adhesive structure that can increase the adhesive strength between the first fastener and the second fastener.

[0004] The present invention also proposes a camera having the above-described adhesive structure and an electronic device including such a camera.

[0005] An adhesive structure according to a first aspect embodiment of the present invention includes:

[0006] The first fastener has an inner cavity, and the inner circumferential surface of the inner cavity has a first adhesive surface;

[0007] The second fastener includes a plug-in portion located in the inner cavity, and the outer peripheral surface of the plug-in portion has a second adhesive surface, and there is a first gap between the second adhesive surface and the first adhesive surface.

[0008] The adhesive component is at least partially located within the first gap and is bonded to both the first adhesive surface and the second adhesive surface.

[0009] The first adhesive surface is configured such that the inner diameter of the inner cavity gradually increases along the direction in which the second fastener extends into the inner cavity; the second adhesive surface is configured such that the outer diameter of the insertion part gradually increases along the direction in which the second fastener extends into the inner cavity.

[0010] The adhesive structure according to the first aspect of the present invention has at least the following beneficial effects:

[0011] The adhesive component is bonded to the first adhesive surface and the second adhesive surface respectively. The first adhesive surface is configured such that the inner diameter of the inner cavity gradually increases along the direction in which the second fixing member extends into the inner cavity. The second adhesive surface is configured such that the outer diameter of the insertion part gradually increases along the direction in which the second fixing member extends into the inner cavity. This increases the bonding strength between the adhesive component and the first and second fixing members, thereby making the adhesive structure of the first aspect embodiment of the present invention more stable.

[0012] According to some embodiments of the first aspect of the invention, a blocking member is further included, the blocking member including a blocking portion located between the outer peripheral surface of the insertion portion and the inner peripheral surface of the inner cavity, and located below the first adhesive surface and the second adhesive surface.

[0013] According to some embodiments of the first aspect of the present invention, the inner peripheral surface of the cavity is provided with a groove, and the blocking member further includes a connecting part connected to the blocking part, the connecting part being located inside the groove, the blocking part being located outside the groove, and abutting against the outer peripheral surface of the insertion part.

[0014] According to some embodiments of the first aspect of the present invention, the groove is an annular groove arranged circumferentially along the inner cavity, and the blocking member is a corresponding annular structure.

[0015] According to some embodiments of the first aspect of the present invention, the second fastener further includes a main body portion connected to the insertion portion and located outside the first fastener. The outer diameter of the main body portion is larger than the outer diameter of the insertion portion to form a third adhesive surface at the connection between the two. The end of the first fastener facing the main body portion has a fourth adhesive surface. A second gap is formed between the third adhesive surface and the fourth adhesive surface. A portion of the adhesive is located within the second gap and is bonded to the third adhesive surface and the fourth adhesive surface, respectively.

[0016] According to some embodiments of the first aspect of the present invention, both the first adhesive surface and the second adhesive surface are conical surfaces.

[0017] According to some embodiments of the first aspect of the invention, the taper of the first adhesive surface is 5° to 25°, and the taper of the second adhesive surface is 5° to 25°.

[0018] According to some embodiments of the first aspect of the invention, the taper of the first adhesive surface is equal to the taper of the second adhesive surface.

[0019] According to a second aspect of the present invention, a camera assembly includes the adhesive structure described above, wherein the first fixing member is a housing and the second fixing member is a lens.

[0020] The camera assembly according to a second aspect embodiment of the present invention has at least the following beneficial effects:

[0021] The bonding strength between the housing and the lens has been increased, resulting in a more stable camera assembly.

[0022] An electronic device according to a third aspect of the present invention includes the camera assembly described above.

[0023] The electronic device according to a third aspect embodiment of the present invention has at least the following beneficial effects:

[0024] The stable structure of the camera assembly results in high-performance electronic devices with a long service life.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 This is a force diagram of a typical adhesive structure;

[0028] Figure 2 This is a schematic diagram of the force application of the adhesive structure according to a first aspect embodiment of the present invention;

[0029] Figure 3 The adhesive structure is an embodiment of the first aspect of the present invention;

[0030] Figure 4 This is a camera assembly according to a second aspect embodiment of the present invention.

[0031] Figure label:

[0032] First fastener 100, inner cavity 110, first adhesive surface 111, groove 112, fourth adhesive surface 120;

[0033] Second fastener 200, insertion part 210, second adhesive surface 211, main body part 220, third adhesive surface 230;

[0034] Adhesive component 300;

[0035] First gap 400;

[0036] Blocking member 500, blocking part 510, connecting part 520;

[0037] The second gap is 600. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0040] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0041] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0042] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] To increase the stability of the bonding between two components, such as the lens and housing in a camera, embodiments of the present invention propose an bonding structure, referring to... Figure 2 The device includes a first fastener 100, a second fastener 200, and an adhesive 300. Specifically, the first fastener 100 has an inner cavity 110, and the inner peripheral surface of the inner cavity 110 has a first adhesive surface 111. The second fastener 200 includes a plug portion 210, which is located in the inner cavity 110, and the outer peripheral surface of the plug portion 210 has a second adhesive surface 211. A first gap 400 is formed between the second adhesive surface 211 and the first adhesive surface 111. The adhesive 300 is at least partially located within the first gap 400 and is bonded to both the first adhesive surface 111 and the second adhesive surface 211.

[0044] The first adhesive surface 111 is configured such that the inner diameter of the inner cavity 110 extends into the inner cavity 110 along the direction in which the second fastener 200 extends into the inner cavity 110 (e.g., Figure 2The outer diameter of the insertion part 210 gradually increases from top to bottom; the second adhesive surface 211 is configured such that the outer diameter of the insertion part 210 gradually increases along the direction in which the second fastener 200 extends into the inner cavity 110.

[0045] The following is passed Figure 1 and Figure 2 The comparative explanation illustrates the function of this embodiment, please refer to... Figure 1 It is also a schematic diagram of two components being glued together. For ease of description, Figure 1 The names of the components or parts are consistent with those in this embodiment. That is, the adhesive structure includes a first fastener 100, a second fastener 200, and an adhesive 300. The difference from this embodiment is that the first adhesive surface 111 and the second adhesive surface 211 are both parallel to the vertical direction. Thus, when a vertically upward first force F1 is applied to the first fastener 200 (this force application method conforms to common failure scenarios), since the direction of the first force F1 is parallel to the separation direction of the adhesive 300, the adhesive 300 basically undergoes shear failure, and the first force F1 entirely produces the aforementioned shear failure. (Refer to...) Figure 2 When the adhesive structure of this embodiment is used and the second force F2 is applied, the separation direction of the adhesive part 300 has a certain angle with the direction of action of the second force F2. The second force F2 can be decomposed into a first component force F parallel to the peeling direction. 21 And the second component force F perpendicular to the peeling direction 22 The first component force F 21 Used to cause shear failure of the bonded part 300, while the first component force F 21 If the force is less than F, then to achieve the same degree of damage, the second force F2 will obviously be greater than the first force F1. In addition, the first fastener 100 itself can also play a certain limiting role on the second fastener 200. Based on the above, the adhesive structure in the embodiment of the present invention increases the adhesive strength between the first fastener 100 and the second fastener 200.

[0046] In some embodiments, the adhesive 300 is an adhesive with a tensile strength in the range of 10~20 MPa. When bonding the first fastener 100 and the second fastener 200, if too little adhesive is added, a good bonding effect cannot be achieved; if too much adhesive is added, since the adhesive 300 is liquid before thermoplasticizing, the adhesive itself has a certain gravity and strong fluidity, and it is easy to slip off from the first bonding surface 111 of the inner cavity 110 of the first fastener 100 or the second bonding surface 211 of the insertion portion 210 of the second fastener 200, thus making it impossible to bond the first fastener 100 and the second fastener 200 simultaneously. To prevent the adhesive 300 from overflowing, a blocking member 500 is provided, as shown in the figure. Figure 3The blocking member 500 is roughly an annular shape and is placed in the first gap 400. The blocking member 500 has a blocking part 510, which is located between the inner peripheral surface of the inner cavity 110 of the first fixing member 100 and the outer peripheral surface of the insertion part 210 of the second fixing member 200, and is located below the first adhesive surface 111 and the second adhesive surface 211. It is used to receive the liquid adhesive 300, so that the liquid adhesive 300 can accumulate to a certain height, so that the adhesive 300 is bonded to the first fixing member 100 at the first adhesive surface 111, and the adhesive 300 is bonded to the second fixing member 200 at the second adhesive surface 211, thereby achieving the effect that the adhesive 300 simultaneously bonds the first fixing member 100 and the second fixing member 200.

[0047] In some embodiments, the blocking member 500 is a rubber ring, and its inner diameter in its natural state is slightly smaller than the outer diameter of the insertion portion 210 of the second fixing member 200. The blocking member 500 has a certain elasticity, so it can be fitted onto the second fixing member 200 and closely adhere to the outer peripheral surface of the insertion portion 210 of the second fixing member 200, thereby preventing the liquid adhesive 300 from overflowing from the gap between the blocking member 500 and the insertion portion 210 of the second fixing member 200.

[0048] In some embodiments, in order to better fix the blocking member 500 and prevent the blocking member 500 from sliding up and down relative to the first fixing member 100, the blocking member 500 further includes a connecting portion 520 connected to the blocking portion 510. Correspondingly, the inner peripheral surface of the inner cavity 110 of the first fixing member 100 is provided with a groove 112. Figure 3 The connecting portion 520 of the blocking member 500 is placed inside the groove 112. The position of the blocking member 500 is fixed by the abutment between the connecting portion 520 and the groove wall of the groove 112, so that the blocking member 500 does not move relative to the inner cavity 110 of the first fixing member 100 and the insertion portion 210 of the second fixing member 200. The blocking portion 510 of the blocking member 500 is located outside the groove 112 and abuts against the outer peripheral surface of the insertion portion 210 of the second fixing member 200.

[0049] It should be noted that the inner circumferential surface of the inner cavity 110 of the first fixing member 100 may not have a groove 112. The inner circumferential surface of the blocking member 500 is slightly smaller than the outer diameter of the insertion part 210, and the outer circumferential surface is slightly larger than the inner diameter of the inner cavity 110, so that the blocking member 500 is fixed between the first fixing member 100 and the second fixing member 200 by friction.

[0050] In some embodiments, in order to achieve a better bonding effect, the adhesive 300 is configured as an annular structure at least partially located in the first gap 400, thereby the blocking member 500 is configured as a corresponding annular structure, and the groove 112 is also configured as a corresponding annular groove arranged circumferentially along the inner cavity 110.

[0051] In some embodiments, in order to increase the bonding strength between the first fastener 100 and the second fastener 200, thereby increasing the bonding area between the first fastener 100 and the second fastener 200, specifically, referring to... Figure 3 , Figure 4 The second fastener 200 has a main body 220, which is connected to the insertion part 210 and located outside the first fastener 100. The outer diameter of the main body 220 is larger than the outer diameter of the insertion part 210, so there is a third adhesive surface 230 at the connection between the two. The end of the first fastener 100 facing the main body 220 has a fourth adhesive surface 120. There is a second gap 600 between the third adhesive surface 230 and the fourth adhesive surface 120. Part of the adhesive 300 is located in the second gap 600 and is bonded to the third adhesive surface 230 and the fourth adhesive surface 120 respectively. Thus, when the first fastener 100 and the second fastener 200 separate, in addition to overcoming the adhesive force of the adhesive 300 in the first gap 400, it is also necessary to overcome the adhesive force of the adhesive 300 in the second gap 600. Therefore, the first fastener 100 and the second fastener 200 are less likely to separate.

[0052] To verify the above effects, the present invention also provides an experiment for illustration, with the following experimental conditions:

[0053] The first fixing component 100 is the outer shell, the second fixing component 200 is the lens, and the adhesive component 300 is glue. The outer shell and the lens are positioned as shown in the figure, with the outer shell completely fixed in the vertical direction. Two sets of adhesive structures are set up, one using an existing adhesive structure as a control group, and the other using the adhesive structure in this embodiment as an experimental group. Both the first adhesive surface 111 and the second adhesive surface 211 are conical surfaces with a taper of 12°.

[0054] The experimental steps are as follows:

[0055] 1. First, the adhesive structure of the experimental group is prepared. Specifically, oil is first applied to the lens and the housing to simulate the pollution situation in reality. Then, glue is applied to the upper surface of the housing. Then, the lens is installed from top to bottom. When the lens moves down to the set position, the lens will contact the glue and squeeze the glue into the first gap 400. When the lens is assembled in place, both the first gap 400 and the second gap 600 will be filled with glue.

[0056] For the control group, the general steps are the same, except that there is no first gap 400 and no glue in the first gap 400, and the glue is only present in the second gap 600.

[0057] 2. Typically, UV light irradiation is used for pre-curing, followed by baking for complete curing.

[0058] 3. By applying inference to the lens from bottom to top through the thruster, the lens failure scenario is simulated, and the thrust value of the thruster is detected.

[0059] 4. Record the thrust value at the moment the lens separates from the housing.

[0060] 5. Repeat the above steps to obtain multiple sets of experimental data.

[0061] Based on the above experiment, the following data can be obtained:

[0062]

[0063] As shown in the above steps, the thrust values ​​in the control group were all less than 1 kgf, indicating extremely low connection strength. This demonstrates that the adhesive structure in the prior art is essentially ineffective in providing a connection when oil contamination is present. The thrust values ​​in the experimental group were all greater than 20 kgf, significantly higher than those in the control group. This indicates that even with contamination, the adhesive structure in this embodiment can still maintain a certain level of connection strength.

[0064] In some embodiments, for ease of manufacturing, both the first bonding surface 111 and the second bonding surface 211 are conical surfaces. Specifically, the taper of the first bonding surface 111 is 5° to 25°, and the taper of the second bonding surface 211 is also 5° to 25°. For example, the taper can be 5°. Since the taper is relatively small, assembly is convenient, and the increase in the inner diameter of the housing is relatively small, which helps to reduce the volume of the housing. The taper can also be 12° as mentioned above, which provides higher connection strength without excessively increasing the volume of the housing.

[0065] In some embodiments, the camera assembly includes the adhesive structure described above, wherein the first fastener 100 is a housing and the second fastener 200 is a lens.

[0066] The present invention also proposes a camera assembly including the adhesive structure of the above embodiments, wherein the first fixing member 100 may be a housing and the second fixing member 200 may be a lens.

[0067] The present invention also proposes an electronic device, including the camera components of the above embodiments, wherein the electronic device may specifically be a trip recorder.

[0068] It should be noted that although the present invention is described using a lens and housing as an example, it is not limited to the above combination. The present invention is applicable to any situation where the connection is made by means of shaft hole fitting and adhesive.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An adhesive structure, characterized in that, include: The first fastener has an inner cavity, and the inner circumferential surface of the inner cavity has a first adhesive surface; The second fastener includes a plug-in portion located in the inner cavity, and the outer peripheral surface of the plug-in portion has a second adhesive surface, and a first gap exists between the second adhesive surface and the first adhesive surface. An adhesive component, at least partially located within the first gap, is bonded to both the first adhesive surface and the second adhesive surface; Wherein, the first adhesive surface is configured such that the inner diameter of the inner cavity gradually increases along the direction in which the second fastener extends into the inner cavity; the second adhesive surface is configured such that the outer diameter of the insertion portion gradually increases along the direction in which the second fastener extends into the inner cavity; The second fastener also includes a main body portion connected to the insertion portion and located outside the first fastener. The outer diameter of the main body portion is larger than the outer diameter of the insertion portion to form a third adhesive surface at the connection between the two. The end of the first fastener facing the main body portion has a fourth adhesive surface. A second gap exists between the third adhesive surface and the fourth adhesive surface. A portion of the adhesive component is located within the second gap and is bonded to both the third adhesive surface and the fourth adhesive surface.

2. The adhesive structure according to claim 1, characterized in that, It also includes a blocking member, which includes a blocking portion located between the outer peripheral surface of the insertion portion and the inner peripheral surface of the inner cavity, and located below the first adhesive surface and the second adhesive surface.

3. The adhesive structure according to claim 2, characterized in that, The inner circumferential surface of the inner cavity is provided with a groove, and the blocking member further includes a connecting part connected to the blocking part. The connecting part is located inside the groove, and the blocking part is located outside the groove and abuts against the outer circumferential surface of the insertion part.

4. The adhesive structure according to claim 3, characterized in that, The groove is an annular groove arranged circumferentially along the inner cavity, and the blocking member is a corresponding annular structure.

5. The adhesive structure according to claim 1, characterized in that, The adhesive structure according to claim 1 is characterized in that both the first adhesive surface and the second adhesive surface are conical surfaces.

6. The adhesive structure according to claim 5, characterized in that, The taper of the first adhesive surface is 5° to 25°, and the taper of the second adhesive surface is 5° to 25°.

7. The adhesive structure according to claim 6, characterized in that, The taper of the first bonding surface is equal to the taper of the second bonding surface.

8. A camera assembly, characterized in that, The adhesive structure includes any one of claims 1 to 7, wherein the first fixing member is a housing and the second fixing member is a lens.

9. An electronic device, characterized in that, Includes the camera assembly of claim 8.

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