PCB positioning device and capsule endoscopy
By setting limiting parts and bonding fixtures on the circuit board of the capsule endoscope, the problem of the circuit board being raised due to the elastic action of the soft line is solved, and the assembly accuracy is improved.
Patent Information
- Application Number
- CN202421187965.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the existing capsule endoscope, the circuit board connected by the FPC soft cable is relatively far away from and raised due to the elastic restoration force of the soft cable, which affects the normal installation and use of the device.
A PCB board positioning device is designed, by providing protruding components on the first circuit board, and providing limiting parts and adhesive fixing parts on the second circuit board, the plane mounting position of the second circuit board relative to the first circuit board is restricted to avoid lifting.
It effectively avoids the second circuit board being raised under the elastic action of the FPC soft cable, and improves the assembly accuracy of the capsule core.
Smart Images
Figure CN222803228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of capsule endoscopes, and more specifically, to a PCB board positioning device. In addition, the utility model also relates to a capsule endoscope comprising the PCB board positioning device. Background Art
[0002] Capsule endoscopy is also known as "medical wireless endoscopy"; the subject orally takes the capsule endoscope with a built-in camera and signal transmission device, which moves in the digestive tract and takes images with the help of digestive tract peristalsis. The doctor uses an external image recorder and imaging workstation to understand the condition of the subject's entire digestive tract and thus make a diagnosis of his or her condition.
[0003] Current capsule endoscopes generally include a shell and a capsule core disposed inside the shell. The capsule core contains two circuit boards connected by an FPC flexible cable. After the two circuit boards are installed, the elastic restoring force of the flexible cable causes the two circuit boards to move relatively apart and warp up, affecting the normal installation and use of components on the circuit boards in the capsule core.
[0004] In summary, how to provide a PCB positioning device that can limit the relative positions of circuit boards connected by flexible flat cables and prevent the circuit boards from warping is a problem that needs to be urgently solved by technical personnel in this field. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a PCB board positioning device, which can fix the plane installation position of the first circuit board relative to the second circuit board, and at the same time prevent the second circuit board from warping relative to the first circuit board through adhesive fixing parts.
[0006] Another object of the utility model is to provide a capsule endoscope comprising the above-mentioned PCB board positioning device.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A PCB board positioning device, comprising:
[0009] a first circuit board;
[0010] The second circuit board is arranged on the upper side of the first circuit board and connected to the first circuit board through an FPC flexible flat cable; a first component is provided on the surface of the first circuit board facing the second circuit board, and a stopper for limiting the position of the first component is provided on the second circuit board to limit the plane installation position of the first circuit board relative to the second circuit board;
[0011] The adhesive fixing piece has one side adhered to the surface of the first component facing the second circuit board, and the other side adhered to the second circuit board.
[0012] Optionally, the limiting member includes a first limiting member and a second limiting member, the first limiting member is used to limit the installation position of the first circuit board relative to the second circuit board in a first direction, and the second limiting member is used to limit the installation position of the first circuit board relative to the second circuit board in a second direction;
[0013] The first direction is perpendicular to the second direction.
[0014] Optionally, the first limiting member includes a first limiting protrusion and a second limiting protrusion provided on the second circuit board, and the second limiting member includes a third limiting protrusion and a fourth limiting protrusion provided on the second circuit board;
[0015] The first limiting protrusion is provided with a first limiting surface for contacting the outer peripheral side surface of the first component, and the second limiting protrusion is provided with a second limiting surface for contacting the outer peripheral side surface of the first component; the first limiting surface and the second limiting surface are arranged opposite to each other;
[0016] The third limiting protrusion is provided with a third limiting surface for contacting the peripheral side surface of the first component, and the fourth limiting protrusion is provided with a fourth limiting surface for contacting the peripheral side surface of the first component; the third limiting surface is arranged opposite to the fourth limiting surface.
[0017] Optionally, the first limiting protrusion, the second limiting protrusion, the third limiting protrusion and the fourth limiting protrusion are all second components installed on the second circuit board.
[0018] Optionally, the first limiting protrusion, the second limiting protrusion, the third limiting protrusion and the fourth limiting protrusion are all provided with guide slopes on one end facing the first circuit board, so that the first component enters the space enclosed by the first limiting protrusion, the second limiting protrusion, the third limiting protrusion and the fourth limiting protrusion.
[0019] Optionally, the adhesive fixing member is a double-sided tape or an adhesive glue.
[0020] Optionally, the bonding fixture is adhesive glue, and a glue storage groove is provided at a position in the second circuit board for bonding with the bonding fixture.
[0021] Optionally, the adhesive fixing member is a double-sided tape, and the projection of the double-sided tape onto the first component completely covers the first component.
[0022] Optionally, the first component is a CPU chip disposed on the first circuit board.
[0023] A capsule endoscope comprises the PCB board positioning device described in any one of the above items.
[0024] In the process of using the PCB board positioning device provided by the utility model, when installing the first circuit board and the second circuit board, firstly, the first component on the first circuit board is matched with the limiting piece to limit the installation position of the first circuit board relative to the second circuit board in the plane where the second circuit board is located; then, the second circuit board is bonded and fixed to the first component by the adhesive fixing piece arranged on the first component. Since the first component is fixedly installed on the first circuit board, it is equivalent to limiting the installation height of the second circuit board relative to the first circuit board, which can effectively prevent the second circuit board from warping relative to the first circuit board under the elastic action of the FPC soft cable, which is beneficial to improving the assembly accuracy of the capsule core.
[0025] In addition, the utility model also provides a capsule endoscope including the above-mentioned PCB board positioning device. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0027] Figure 1 This is a schematic diagram of the core structure of the capsule endoscope provided by the utility model;
[0028] Figure 2 It is a structural schematic diagram of the second circuit board and the FPC flexible cable;
[0029] Figure 3 It is a schematic diagram of the structure of the first circuit board and the CPU chip.
[0030] Figure 1-Figure 3 middle:
[0031] 100 power supply components;
[0032] 200 is a first circuit board;
[0033] 210 is an adhesive fixing part, and 220 is a CPU chip;
[0034] 300 is a second circuit board;
[0035] 310 is a bonding position, 320 is a first limiting protrusion, 330 is a second limiting protrusion, 340 is a third limiting protrusion, and 350 is a fourth limiting protrusion;
[0036] 400 is FPC soft cable;
[0037] 500 is a third circuit board. DETAILED DESCRIPTION
[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0039] The core of the utility model is to provide a PCB board positioning device, which can fix the plane installation position of a first circuit board relative to a second circuit board, and at the same time, by bonding the fixing parts, the second circuit board can be prevented from tilting relative to the first circuit board.
[0040] Another core of the utility model is to provide a capsule endoscope including the above-mentioned PCB board positioning device.
[0041] The present specific embodiment discloses a PCB board positioning device, including a first circuit board 200, a second circuit board 300 and an adhesive fixing member 210. The second circuit board 300 is arranged on the upper side of the first circuit board 200 and is connected to the first circuit board 200 through an FPC flexible flat cable 400. A first component is protrudingly arranged on the surface of the first circuit board 200 facing the second circuit board 300, and the second circuit board 300 is provided with a limiter for limiting the position of the first component to limit the planar installation position of the first circuit board 200 relative to the second circuit board 300. One side of the adhesive fixing member 210 is adhered to the surface of the first component facing the second circuit board 300, and the other side is adhered to the second circuit board 300.
[0042] It should be noted that the limiter mentioned in this specific embodiment is mainly used to limit the installation position of the second circuit board 300 relative to the first circuit board 200 in the plane where the first circuit board 200 is located, so as to avoid the second circuit board 300 from being displaced relative to the first circuit board 200 in the plane where the first circuit board 200 is located; the adhesive fixing member 210 is mainly used to limit the installation position of the second circuit board 300 relative to the first circuit board 200 in a direction perpendicular to the plane where the first circuit board 200 is located, so as to limit the distance between the second circuit board 300 and the first circuit board 200 in a direction perpendicular to the plane where the first circuit board 200 is located.
[0043] The first component mentioned in this specific embodiment may be a CPU chip 220, or may be other structures that meet the requirements, which is determined based on actual conditions and will not be elaborated here.
[0044] In the process of using the PCB board positioning device provided in this specific embodiment, when installing the first circuit board 200 and the second circuit board 300, firstly, the first component on the first circuit board 200 is matched with the limiting component to limit the installation position of the first circuit board 200 relative to the second circuit board 300 in the plane where the second circuit board 300 is located; then, the second circuit board 300 is bonded and fixed to the first component by the adhesive fixing component 210 arranged on the first component. Since the first component is fixedly installed on the first circuit board 200, it is equivalent to limiting the installation height of the second circuit board 300 relative to the first circuit board 200, which can effectively prevent the second circuit board 300 from warping relative to the first circuit board 200 under the elastic action of the FPC soft cable 400, which is beneficial to improving the assembly accuracy of the capsule core.
[0045] The adhesive fixing member 210 in the above embodiment may be a double-sided tape or adhesive glue. Specifically, glue with weak adhesive force may be used to facilitate subsequent disassembly.
[0046] When the adhesive fixing member 210 is adhesive glue, a position for bonding with the adhesive fixing member 210 can be set on the second circuit board 300, such as Figure 2 As shown in the bonding position 310 , a glue storage slot may be provided at the bonding position 310 to facilitate storage of the adhesive.
[0047] When the bonding fixture 210 is a double-sided tape, the projection of the double-sided tape onto the first component can completely cover the first component, so as to increase the area of the double-sided tape as much as possible and improve the bonding strength.
[0048] It should be noted that the number of the first components mentioned in the above embodiment can be one or more, and the specific setting position of the first component can be located in the center of the first circuit board 200, or can be determined according to actual conditions. It is specifically determined according to actual conditions and will not be elaborated here.
[0049] On the basis of the above embodiment, the limiting member may include a first limiting member and a second limiting member, wherein the first limiting member is used to limit the installation position of the first circuit board 200 relative to the second circuit board 300 in a first direction, and the second limiting member is used to limit the installation position of the first circuit board 200 relative to the second circuit board 300 in a second direction; the first direction is perpendicular to the second direction.
[0050] Specifically, the first limiting member includes a first limiting protrusion 320 and a second limiting protrusion 330 arranged on the second circuit board 300, and the second limiting member includes a third limiting protrusion 340 and a fourth limiting protrusion 350 arranged on the second circuit board 300; the first limiting protrusion 320 is provided with a first limiting surface for contacting the peripheral side surface of the first component, and the second limiting protrusion 330 is provided with a second limiting surface for contacting the peripheral side surface of the first component; the first limiting surface and the second limiting surface are arranged opposite to each other; the third limiting protrusion 340 is provided with a third limiting surface for contacting the peripheral side surface of the first component, and the fourth limiting protrusion 350 is provided with a fourth limiting surface for contacting the peripheral side surface of the first component; the third limiting surface and the fourth limiting surface are arranged opposite to each other.
[0051] like Figure 3 As shown, the first component is a CPU chip 220 fixed on the first circuit board 200, and the shape of the CPU chip 220 is rectangular. The first limiting protrusion 320, the second limiting protrusion 330, the third limiting protrusion 340 and the fourth limiting protrusion 350 are all second components installed on the second circuit board 300, wherein the first limiting surface of the first limiting protrusion 320, the second limiting surface of the second limiting protrusion 330, the third limiting surface of the third limiting protrusion 340, and the fourth limiting surface of the fourth limiting protrusion 350 are respectively in contact with the four side surfaces of the CPU chip 220 to limit the installation position of the CPU chip 220, thereby limiting the planar installation position of the second circuit board 300 relative to the first circuit board 200.
[0052] Furthermore, guide slopes can be set on one end of the first limiting protrusion 320, the second limiting protrusion 330, the third limiting protrusion 340 and the fourth limiting protrusion 350 toward the first circuit board 200, so that the first component can enter the space enclosed by the first limiting protrusion 320, the second limiting protrusion 330, the third limiting protrusion 340 and the fourth limiting protrusion 350, thereby improving the assembly efficiency of the first circuit board 200 and the second circuit board 300.
[0053] In addition to the above-mentioned PCB board positioning device, the present invention also provides a capsule endoscope including the PCB board positioning device disclosed in the above-mentioned embodiment. For the structures of other parts of the capsule endoscope, please refer to the prior art and will not be described in detail herein.
[0054] like Figure 1 As shown, the core of the capsule endoscope includes a power supply 100, a first circuit board 200, a second circuit board 300, a third circuit board 500, and an FPC flexible cable 400 connecting the first circuit board 200 and the second circuit board 300; during the actual assembly process, a capsule-shaped shell needs to be set outside the core of the capsule endoscope.
[0055] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided by the utility model is within the protection scope of this utility model and will not be described in detail here.
[0056] The above is a detailed introduction to the PCB board positioning device and capsule endoscope provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.
Claims
1. A PCB board positioning device, characterized in that: include: A first circuit board (200); A second circuit board (300) is connected to the first circuit board (200) via an FPC flexible flat cable (400); a first component is provided protrudingly on the surface of the first circuit board (200) facing the second circuit board (300), and a position limiting member for limiting the position of the first component is provided on the second circuit board (300) to limit the plane installation position of the first circuit board (200) relative to the second circuit board (300); An adhesive fixing member (210) has one side adhered to the surface of the first component facing the second circuit board (300), and the other side adhered to the second circuit board (300).
2. The PCB board positioning device according to claim 1, characterized in that: The limiting member comprises a first limiting member and a second limiting member, the first limiting member being used to limit the installation position of the first circuit board (200) relative to the second circuit board (300) in a first direction, and the second limiting member being used to limit the installation position of the first circuit board (200) relative to the second circuit board (300) in a second direction; The first direction is perpendicular to the second direction.
3. The PCB board positioning device according to claim 2, characterized in that: The first limiting member comprises a first limiting protrusion (320) and a second limiting protrusion (330) arranged on the second circuit board (300); the second limiting member comprises a third limiting protrusion (340) and a fourth limiting protrusion (350) arranged on the second circuit board (300); The first limiting protrusion (320) is provided with a first limiting surface for contacting the outer peripheral side surface of the first component, and the second limiting protrusion (330) is provided with a second limiting surface for contacting the outer peripheral side surface of the first component; the first limiting surface and the second limiting surface are arranged opposite to each other; The third limiting protrusion (340) is provided with a third limiting surface for contacting the outer peripheral side surface of the first component, and the fourth limiting protrusion (350) is provided with a fourth limiting surface for contacting the outer peripheral side surface of the first component; the third limiting surface and the fourth limiting surface are arranged opposite to each other.
4. The PCB board positioning device according to claim 3, characterized in that: The first limiting protrusion (320), the second limiting protrusion (330), the third limiting protrusion (340) and the fourth limiting protrusion (350) are all second components installed on the second circuit board (300).
5. The PCB board positioning device according to claim 3, characterized in that: The first limiting protrusion (320), the second limiting protrusion (330), the third limiting protrusion (340) and the fourth limiting protrusion (350) are all provided with guiding inclined surfaces at one end facing the first circuit board (200), so as to enable the first component to enter the space enclosed by the first limiting protrusion (320), the second limiting protrusion (330), the third limiting protrusion (340) and the fourth limiting protrusion (350).
6. The PCB board positioning device according to any one of claims 1 to 5, characterized in that: The adhesive fixing member (210) is a double-sided tape or an adhesive.
7. The PCB board positioning device according to claim 6, characterized in that: The adhesive fixing member (210) is adhesive glue, and a glue storage groove is provided at a position in the second circuit board (300) for bonding with the adhesive fixing member (210).
8. The PCB board positioning device according to claim 6, characterized in that: The adhesive fixing member (210) is a double-sided adhesive tape, and the projection of the double-sided adhesive tape onto the first component completely covers the first component.
9. The PCB board positioning device according to any one of claims 1 to 5, characterized in that: The first component is a CPU chip (220) arranged on the first circuit board (200).
10. A capsule endoscope, characterized in that: It comprises the PCB board positioning device as described in any one of claims 1-9.