A connection structure and sensor thereof

Abstract

The present invention discloses a connection structure and a sensor thereof, and relates to the field of sensor technology. The connection structure of the present invention comprises: a first unit, a second unit and a third unit, the upper boss structure of the second unit forms a snap-fit ​​connection with the first unit, the lower boss structure of the second unit forms a snap-fit ​​connection with the third unit, and the second unit connection portion has a hollow structure. The present invention also discloses an assembly method of the connection structure. The connection operation between the first unit, the second unit and the third unit is simple and effective, and there will be no problems of misalignment and / or overflow of adhesive materials between the three, thereby improving the yield rate and operating efficiency, reducing the amount of adhesive materials used, and saving costs.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and in particular to a connection structure and a sensor thereof. Background Art

[0002] A sensor is a device or apparatus that can sense the measured quantity and convert it into a usable output signal according to certain rules. It is usually composed of a sensitive element and a conversion component. The sensitive element refers to the part of the sensor that can directly sense or respond to the measured quantity; the conversion component refers to the part of the sensor that converts the changes in the measured quantity sensed or responded by the sensitive element into a signal suitable for transmission or measurement.

[0003] Usually, according to the physical quantity measured by the sensor, it can be divided into displacement sensors, pressure sensors, acceleration sensors, temperature sensors, etc. The so-called pressure sensor is a device or device that can sense the fluid pressure and convert it into a usable signal output according to a certain rule.

[0004] The sensitive element of the pressure sensor includes a main body and a sensing piece. The main body is mainly a mechanical elastic body (such as a common metal or other material diaphragm) that senses the fluid pressure. The sensing piece is made on the elastomer substrate through a specific process and connected to the circuit board through a lead. The circuit board and the elastomer need to be isolated from the medium by insulating materials and fixedly connected. When the measured value acts on the elastomer, the elastomer produces corresponding changes. The sensing piece responds to the change of the elastomer and produces a change in a certain characteristic (usually an electrical characteristic such as resistance, capacitance, etc.), and generates a corresponding signal output through a certain circuit connection method.

[0005] In the prior art, the circuit board and the elastomer are fixedly connected by insulating material. The specific method is to coat the adhesive material on the elastomer of the pressure sensor sensitive element body, and then bond the insulating material (ring-shaped gasket) to the elastomer, further coat the adhesive material on the ring-shaped gasket, and then bond the circuit board to the ring-shaped gasket, thereby finally achieving the circuit board being bonded and fixed to the elastomer.

[0006] Problems existing in the prior art: 1. It is difficult to position and align the annular gasket when it is bonded to the elastomer, which is time-consuming and easily leads to defective products; 2. It is difficult to position and align the circuit board when it is bonded to the annular gasket, which is time-consuming and easily leads to defective products; 3. When the annular gasket is bonded to the elastomer, and / or the circuit board is bonded to the annular gasket, the coated adhesive material is likely to overflow and must be cleaned up, and it is easy to be brought to other parts during cleaning and cause pollution. At the same time, it is easy to cause the gasket and the circuit board to shift during cleaning, and it is necessary to reposition and align, which is time-consuming and easily leads to defective products; 4. The annular gasket is bonded to the elastomer in a planar contact with a limited area, which often leads to insufficient bonding strength and difficulty in control, high requirements on operators, low work efficiency, and waste of bonding materials; 5. The bonding of the annular gasket to the elastomer and the circuit board to the annular gasket requires two separate coatings of the adhesive material, which is complicated in process and prolongs the working time. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a connection structure in view of the shortcomings of the prior art, which is simple, firm, easy to assemble, and can improve production efficiency and reduce the defective product rate.

[0008] In order to solve the technical problem of the present invention, the following technical solution is adopted:

[0009] The present invention provides a connection structure, comprising: a first unit (1), a second unit (2) and a third unit (3), wherein the first unit (1) is connected to the second unit (2), and the second unit (2) is connected to the third unit (3), wherein: the first unit (1) comprises a first unit connection portion (11); the second unit (2) comprises a hollow portion (21) and a connection portion (22), and the connection portion (22) comprises an upper connection portion (221) and a lower connection portion (222); The third unit (3) comprises a third unit connecting portion (31); the first unit connecting portion (11) is connected to the upper connecting portion (221), and the lower connecting portion (222) is connected to the third unit connecting portion (31); the connecting portion (22) comprises a lower edge portion (224), the lower edge portion (224) protrudes downward relative to the lower connecting portion (222) to form a lower boss structure (2241), and the lower boss structure (2241) forms a snap-fit ​​connection with the third unit (3).

[0010] As one of the embodiments, the present invention provides a connection structure, wherein the connection portion (22) includes an upper edge portion (223), and the upper edge portion (223) protrudes upward relative to the upper connection portion (221) to form an upper boss structure (2231), and the upper boss structure (2231) forms a snap-fit ​​connection with the first unit (1).

[0011] As one of the embodiments, the present invention provides a connection structure, wherein the connection portion (22) of the second unit (2) includes a hollow structure (23), and the hollow structure (23) is formed as a structure that penetrates the upper connection portion (221) and the lower connection portion (222).

[0012] As one of the embodiments, the present invention provides a connection structure, wherein the first unit (1), the second unit (2) and the third unit (3) are connected by a bonding material (A).

[0013] As one of the embodiments, the present invention provides a connection structure, wherein the first unit (1) includes a circuit board.

[0014] As one of the embodiments, the present invention provides a connection structure, wherein the upper boss structure (2231) has a notch portion (2232).

[0015] As one of the embodiments, the present invention provides a connection structure, wherein the upper boss structure (2231) has a plurality of notches (2232) in a symmetrical structure.

[0016] As one of the embodiments, the present invention provides a connection structure, wherein the hollow structure (23) is formed into a plurality of circular holes (231).

[0017] As one of the embodiments, the present invention provides a connection structure, wherein the bonding material (A) is silica gel.

[0018] As one of the embodiments, the present invention provides a connection structure, wherein the second unit (2) is made of insulating materials including plastic materials.

[0019] The present invention also provides a sensor, comprising the above-mentioned connection structure.

[0020] The present invention also provides an assembly method of the above-mentioned connection structure, the assembly method comprising the following steps: connecting the first unit (1) with the second unit (2); and connecting the second unit (2) with the third unit (3).

[0021] As one of the embodiments, the present invention provides an assembly method, wherein the first unit (1) is connected to the second unit (2) and / or the second unit (2) is connected to the third unit (3) by using an adhesive material (A).

[0022] As one of the embodiments, the present invention provides an assembly method, wherein the adhesive material (A) is coated on the surface of the connecting portion (31); the second unit (2) is aligned with the connecting portion (31) and connected to the third unit (3).

[0023] As one of the embodiments, the present invention provides an assembly method, wherein the first unit (1) and the second unit (2) and / or the second unit (2) and the third unit (3) are connected to each other by snap-fitting.

[0024] As one of the embodiments, the present invention provides an assembly method, wherein the bonding material (A) is silicone or epoxy resin.

[0025] The present invention provides a sensor obtained by the above assembly method.

[0026] The present invention provides a sensor, which includes a pressure sensor.

[0027] The beneficial effects of the present invention are:

[0028] 1. The upper boss structure (2231) and the lower boss structure (2241) of the second unit (2) are respectively connected to the first unit (1) and the third unit (3) in a snap-fitting manner, so that the first unit (1), the second unit (2) and the third unit (3) can be easily aligned and connected, thereby improving work efficiency. The lower boss structure (2241) can cover the adhesive material (A) overflowing from the third unit (3), thereby reducing the action of removing the adhesive material (A), and further plays a role in fixing the second unit (2), thereby increasing the bonding strength.

[0029] 2. The connecting portion (22) of the second unit (2) is provided with a hollow structure (23), which can reduce the step of applying the adhesive material (A), improve work efficiency, and save manufacturing costs;

[0030] Third, the upper boss structure (2231) is provided with a notch portion (2232), which reduces the processing steps for the first unit (1), improves work efficiency, and plays a preliminary role in positioning the first unit (1).

[0031] It can be seen that after adopting the new technical solution, the connection operation between the first unit (1), the second unit (2) and the third unit (3) is simple and effective, and there will be no problems of misalignment and / or overflow of adhesive material (A) between the three, thereby improving the yield rate and operating efficiency, reducing the use of adhesive material, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the split structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the first unit of the present invention;

[0034] Figure 3 It is a top view of the second unit of the present invention;

[0035] Figure 4 It is a bottom view of the second unit of the present invention;

[0036] Figure 5 This is a front view of the second unit of the present invention;

[0037] Explanation of the reference numerals: first unit (1); first unit connecting portion (11); second unit (2); hollow portion (21); connecting portion (22); hollow structure (23); upper connecting portion (221); lower connecting portion (222); upper edge portion (223); lower edge portion (224); circular hole (231); upper boss structure (2231); notch portion (2232); lower boss structure (2241); third unit (3); third unit connecting portion (31). DETAILED DESCRIPTION

[0038] The specific implementation of the present invention is described in detail below. It is necessary to point out that the following implementation is only used for further explanation of the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made to the present invention by persons skilled in the art based on the above-mentioned content of the present invention still fall within the scope of protection of the present invention.

[0039] Reference Figures 1 to 5 A connection structure comprises: a first unit (1), a second unit (2) and a third unit (3), wherein the first unit (1) is connected to the second unit (2), the second unit (2) is connected to the third unit (3), and the second unit (2) is located between the first unit (1) and the third unit (3) to connect the first unit (1) and the third unit (3).

[0040] Specifically, the first unit (1) comprises a first unit connecting portion (11); the second unit (2) comprises a hollow portion (21) and a connecting portion (22), the hollow portion (21) may be circular, square or other shapes, the connecting portion (22) comprises an upper connecting portion (221) and a lower connecting portion (222); the third unit (3) comprises a third unit connecting portion (31); the first unit connecting portion (11) is connected to the upper connecting portion (221), and the lower connecting portion (222) is connected to the third unit connecting portion (31).

[0041] The first unit (1) includes a circuit board, the second unit (2) is made of insulating materials such as plastic materials, the third unit (3) is a sensor body, and the third unit connecting portion (31) is an elastic body. The first unit (1), the second unit (2) and the third unit (3) are connected by a bonding material (A), and the bonding material (A) can be silicone or epoxy resin.

[0042] In this embodiment, the connecting portion (22) includes a lower edge portion (224), the lower edge portion (224) protrudes downward relative to the lower connecting portion (222) to form a lower boss structure (2241), the lower boss structure (2241) includes the lower edge portion (224) and the lower connecting portion (222), and the lower boss structure (2241) forms a snap-fit ​​connection with the third unit (3), and the snap-fit ​​connection here means that the lower edge portion (224) and the lower connecting portion (222) are respectively connected to the third unit The edge of the second unit (2) and the third unit connecting portion (31) are in contact and connected, which facilitates the alignment and connection operation of the second unit (2) and the third unit (3); moreover, the lower edge portion (224) can cover the silicone overflowing from the edge of the third unit (3), thereby reducing the action of wiping the glue; the lower edge portion (224) is connected through the silicone overflowing from the edge of the third unit (3), thereby increasing the bonding area between the second unit (2) and the third unit (3), and further strengthening the stability of the second unit (2).

[0043] In this embodiment, the connecting portion (22) includes an upper edge portion (223), and the upper edge portion (223) protrudes upward relative to the upper connecting portion (221) to form an upper boss structure (2231). The upper boss structure (2231) includes the upper connecting portion (221) and the upper edge portion (223). The upper boss structure (2231) forms a snap-fit ​​connection with the first unit (1). The snap-fit ​​connection here means that the upper connecting portion (221) and the upper edge portion (223) are respectively in contact and connected with the first unit connecting portion (11) and the edge portion of the first unit, thereby facilitating the alignment and connection operation of the second unit (2) and the first unit (1).

[0044] In this embodiment, the connection part (22) of the second unit (2) includes a hollow structure (23), and the hollow structure (23) is formed into a structure that penetrates the upper connection part (221) and the lower connection part (222). The hollow structure (23) is formed into a plurality of circular holes (231), and the plurality of circular holes (231) can be a symmetrical structure or irregularly arranged, depending on product requirements. The adhesive material (A) is applied to the third unit connection part (31), and the adhesive material (A) overflows onto the upper connection part (221) through the hollow structure (23). The overflowed adhesive material (A) can be used to connect the upper connection part (221) with the first unit connection part (11), thereby reducing the action of applying the adhesive material to the upper connection part (221) again, improving production efficiency, and saving costs. Taking a sensor as an example, the first unit (1) includes a circuit board, and the circuit board has a plurality of welding holes. The structure of the plurality of circular holes (231) should be arranged according to the positions of the welding holes of the circuit board, so that when the first unit (1) and the second unit (2) are connected, the welding holes do not overlap with the circular holes (231), so as to avoid the overflowed adhesive material (A) blocking the welding holes and affecting the subsequent welding of the sensor.

[0045] In this embodiment, the upper boss structure (2231) has a notch (2232), and further, the upper boss structure (2231) has a plurality of notches (2232) in a symmetrical structure. Taking the sensor as an example, the first unit (1) includes a circuit board, and a single circuit board may have a water outlet (the water outlet is a part of the edge of a single circuit board that is detached). If the water outlet is not processed, it may cause inconvenience in connecting the first unit (1) and the second unit (2). The notch (2232) is matched with the water outlet of the circuit board. By providing the notch (2232), the step of processing the water outlet of the circuit board can be omitted, thereby improving production efficiency, and playing a preliminary positioning role for the first unit (1). In order to achieve the effect of accurately positioning the first unit (1), two protrusions can be provided on the upper connecting part (221), and concave points corresponding to the two protrusions of the upper connecting part (221) can be provided on the first unit (1), so that the first unit (1) can be accurately positioned.

[0046] A sensor comprises the above connection structure, and the sensor comprises a pressure sensor.

[0047] The assembly method of the connection structure comprises the following steps: connecting the first unit (1) with the second unit (2); and connecting the second unit (2) with the third unit (3).

[0048] The first unit (1) is connected to the second unit (2) and / or the second unit (2) is connected to the third unit (3) by using an adhesive material (A). Specifically, the adhesive material (A) is applied to the surface of the connecting portion (31), and the second unit (2) is aligned with the connecting portion (31) and connected to the third unit (3). The first unit (1) and the second unit (2) and / or the second unit (2) and the third unit (3) are connected to each other by snap-fitting, and the adhesive material (A) is silicone or epoxy resin.

[0049] Specifically, taking a sensor as an example, the sensor may be a pressure sensor, and the sensor includes the connection structure of the present invention.

[0050] The second unit (2) comprises the lower boss structure (2241), and the assembly method comprises the following steps:

[0051] a. applying the adhesive material (A) to the surface of the connecting portion (31);

[0052] b. The second unit (2) and the third unit (3) are connected to each other by means of a snap fit;

[0053] c. applying the adhesive material (A) to the surface of the upper connecting portion (221);

[0054] d. The second unit (2) is aligned and connected to the first unit (1).

[0055] The second unit (2) comprises the lower boss structure (2241) and the upper boss structure (2231), the upper boss structure (2231) has a notch portion (2232), the connecting portion (22) comprises a hollow structure (23), and the assembly method comprises the following steps:

[0056] a. applying the adhesive material (A) to the surface of the connecting portion (31);

[0057] b. The second unit (2) and the third unit (3) are connected to each other by means of a snap fit;

[0058] c. applying the adhesive material (A) to the surface of the upper connecting portion (221);

[0059] d. The position of the first unit (1) is adjusted through the notch (2232) and the first unit (1) is connected to the second unit (2) by snap-fitting.

[0060] The second unit (2) comprises the lower boss structure (2241) and the upper boss structure (2231), the upper boss structure (2231) has a notch portion (2232), the connecting portion (22) comprises a hollow structure (23), and the assembly method comprises the following steps:

[0061] a. applying the adhesive material (A) to the surface of the connecting portion (31);

[0062] b. The second unit (2) and the third unit (3) are connected to each other by means of a snap fit;

[0063] c. The position of the first unit (1) is adjusted through the notch (2232) and the first unit (1) is connected to the second unit (2) by snap-fitting.

[0064] Although exemplary embodiments of the present invention have been described for illustrative purposes, it will be understood by those skilled in the art that various modifications, additions, and substitutions may be made in form and detail without departing from the scope and spirit of the invention disclosed in the appended claims, and all such changes shall fall within the scope of protection of the appended claims of the present invention, and the various steps in the various departments and methods of the products claimed by the present invention may be combined together in any combination. Therefore, the description of the embodiments disclosed in the present invention is not intended to limit the scope of the present invention, but is used to describe the present invention. Accordingly, the scope of the present invention is not limited by the above embodiments, but is defined by the claims or their equivalents.

Claims

1. A pressure sensor, characterized in that: Including the following connection structure, Wherein, the connection structure comprises: A first unit (1), a second unit (2) and a third unit (3), wherein the first unit (1) is connected to the second unit (2), and the second unit (2) is connected to the third unit (3), wherein: The first unit (1) comprises a first unit connecting portion (11); The second unit (2) comprises a hollow portion (21) and a connecting portion (22), and the connecting portion (22) comprises an upper connecting portion (221) and a lower connecting portion (222); The third unit (3) comprises a third unit connecting portion (31); The first unit connection portion (11) is connected to the upper connection portion (221), and the lower connection portion (222) is connected to the third unit connection portion (31); The connecting portion (22) comprises a lower edge portion (224), the lower edge portion (224) protrudes downward relative to the lower connecting portion (222) to form a lower boss structure (2241), and the lower boss structure (2241) forms a snap-fit ​​connection with the third unit (3); Furthermore, the connecting portion (22) comprises an upper edge portion (223), the upper edge portion (223) protrudes upward relative to the upper connecting portion (221) to form an upper boss structure (2231), and the upper boss structure (2231) forms a snap-fit ​​connection with the first unit (1); The connecting portion (22) of the second unit (2) comprises a hollow structure (23), and the hollow structure (23) is formed as a structure penetrating the upper connecting portion (221) and the lower connecting portion (222); The first unit (1), the second unit (2) and the third unit (3) are connected by a bonding material (A); The first unit (1) comprises a circuit board; The upper boss structure (2231) has a notch portion (2232); The upper boss structure (2231) has a plurality of notches (2232) in a symmetrical structure; The hollow structure (23) is formed into a plurality of circular holes (231); The bonding material (A) is silica gel or epoxy resin; The second unit (2) is made of insulating material including plastic material and the like.

2. A method for assembling the connection structure of the pressure sensor according to claim 1, the method comprising the following steps: connecting the first unit (1) to the second unit (2); connecting the second unit (2) to the third unit (3); Connecting the first unit (1) to the second unit (2) and / or connecting the second unit (2) to the third unit (3) by using an adhesive material (A); Applying the bonding material (A) to the surface of the connecting portion (31); Aligning the second unit (2) with the connecting portion (31) and connecting it with the third unit (3); The first unit (1) and the second unit (2) and / or the second unit (2) and the third unit (3) are connected to each other by means of a snap-fitting manner; The bonding material (A) is silica gel or epoxy resin.

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