Flexible plate fixing structure

Abstract

The utility model provides a flexible board fixing structure, comprising a flexible board fixing clamp which is arranged at the leading-out end of a flexible circuit board and fixes the flexible circuit board; the contact surface of the flexible plate fixing clamp and the flexible circuit board is made of an elastic material, the flexible circuit board is clamped, and the flexible plate fixing clamp is fixed on the side wall of the shielding box bottom frame through two M5 screws; the flexible plate fixing clamp comprises a base, a first fluororubber sealing gasket, a left side pressing frame, a right side pressing frame, a second fluororubber sealing gasket and a third fluororubber sealing gasket, the third fluororubber sealing gasket is pasted in a groove of the left side pressing frame of the flexible plate fixing clamp, and the second fluororubber sealing gasket is pasted in a groove of the right side pressing frame of the flexible plate fixing clamp. And a first fluororubber sealing gasket is adhered in the groove of the base of the flexible plate fixing clamp. According to the utility model, the surface of the flexible circuit board is protected, clamping and fixing are realized, and the detachable maintainability is high.

Description

Technical Field

[0001] The utility model belongs to the field of Einstein probe satellites, and in particular relates to a flexible plate fixing structure. Background Art

[0002] The Einstein Probe (EP) satellite is one of the projects approved by the Chinese Academy of Sciences' Space Science Pilot Program Phase II. It was successfully launched in January 2024. The payload of the EP satellite includes a soft X-ray (0.5~4keV) monitor (WXT) with a large field of view (3600 square degrees) and a deep follow-up X-ray telescope (FXT) with a field of view of about 38 arc minutes.

[0003] The FXT telescope consists of an upper assembly and a lower assembly. The lower assembly includes a detector box, a refrigerator, a heat pipe, a radiation plate, and a heat dissipation system. The detector box includes a shielding box and a focal plane detector box. The detector box includes a shielding box, a focal plane detector box, a light limiting valve, etc. Its main function is to provide a good spatial force, thermal and physical installation environment for the pn-CCD.

[0004] The shielding box is used to shield charged particles and diffuse X-ray background, which can effectively reduce the instrument background and reduce the radiation damage of the detector. Therefore, it has very high requirements for material selection and processing accuracy. The shielding box is installed directly below the filter wheel through the adapter flange, and the focal plane detector box is installed inside.

[0005] The focal plane detector box is installed on the upper cover of the shielding box through four polyimide triangular brackets. At the same time, the flexible circuit board of the focal plane detector is led out from the detector mounting box and connected to the FXT detector chassis through the long side of the shielding box. However, the existing flexible board is not fixed after being led out of the shielding box, and the flexible board is in danger of being damaged. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a flexible board fixing structure, which is used to protect the flexible circuit board and also plays a role of clamping and fixing.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A flexible board fixing structure comprises a flexible board fixing clamp, which is arranged at the lead-out end of a flexible circuit board and fixes the flexible circuit board; the contact surface between the flexible board fixing clamp and the flexible circuit board is an elastic material, the flexible board fixing clamp also plays the role of clamping the flexible circuit board, and the flexible board fixing clamp is fixed to the side wall of the bottom frame of a shielding box by two M5 screws; the flexible board fixing clamp comprises a base, a first fluororubber sealing pad, a left pressure frame, a right pressure frame, a second fluororubber sealing pad, and a third fluororubber sealing pad, the third fluororubber sealing pad is pasted in the groove of the left pressure frame of the flexible board fixing clamp, the second fluororubber sealing pad is pasted in the groove of the right pressure frame, and the first fluororubber sealing pad is pasted in the groove of the base of the flexible board fixing clamp.

[0009] Furthermore, the left and right pressing frames to which the sealing gaskets are attached are inserted into the flexible circuit board from left and right directions, and the left and right pressing frames are fixed to the base of the flexible circuit board fixing clamp by screws.

[0010] Beneficial effects:

[0011] The utility model plays the role of protecting the surface of the flexible circuit board and also plays the role of clamping and fixing, and at the same time, the utility model is detachable and has high maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1 is a schematic diagram of a flexible plate fixing structure of the present invention;

[0013] FIG. 2 is an exploded view of a flexible plate fixing structure of the present invention.

[0014] Among them, the figures are marked as: flexible board fixing clamp 1, flexible circuit board 2, shielding box bottom frame 3, shielding box upper cover 4, base 1.1, first fluororubber sealing gasket 1.2, left pressure frame 1.3, right pressure frame 1.4, second fluororubber sealing gasket 1.5, third fluororubber sealing gasket 1.6. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] Since the flexible board has copper wire inside and polyimide package outside, its fixation cannot be hard contact. In order to ensure its mechanical resistance, the utility model designs a flexible board fixing structure, which is fixed at the lead-out end of the flexible circuit board 2, and the screws are installed on the long side wall of the shielding box, such as Figure 1As shown. The short side outlets of the shielding box upper cover 4 and the shielding box bottom frame 3 lead out the flexible circuit board 2. In order to protect the flexible circuit board 2, a flexible circuit board fixing clamp 1 is provided to ensure that the contact surface of the flexible circuit board 2 is an elastic material and to clamp the flexible circuit board 2. The flexible circuit board fixing clamp 1 is fixed to the side wall of the shielding box bottom frame 3 by two M5 screws.

[0017] like Figure 2 As shown, because the flexible circuit board 2 cannot be easily disassembled, the flexible circuit board fixing clamp 1 is required to be able to clamp the flexible circuit board 2 from both sides of the flexible circuit board 2 to facilitate installation.

[0018] The flexible board fixing clamp 1 comprises a base 1.1, a first fluororubber sealing pad 1.2, a left pressing frame 1.3, a right pressing frame 1.4, a second fluororubber sealing pad 1.5, and a third fluororubber sealing pad 1.6. The third fluororubber sealing pad 1.6 is pasted in the groove of the left pressing frame 1.3 of the flexible board fixing clamp 1, the second fluororubber sealing pad 1.5 is pasted in the groove of the right pressing frame 1.4, and the first fluororubber sealing pad 1.2 is pasted in the groove of the base 1.1 of the flexible board fixing clamp 1, and then the left pressing frame 1.3 and the right pressing frame 1.4 pasted with the sealing pads are inserted into the flexible circuit board 2 from the left and right directions, and after adjusting the appropriate position, the two screws at the front end of the left pressing frame 1.3 and the right pressing frame 1.4 are screwed in, passed through the left pressing frame 1.3 and the right pressing frame 1.4, and tightened to be fixed on the base 1.1 of the flexible board fixing clamp 1, and finally the whole is fixed to the side of the bottom frame 3 of the shielding box by two M5 screws. The left pressing frame 1.3 and the right pressing frame 1.4 are fixed to the base 1.1 by screws, and the base 1.1 is fixed to the bottom frame 3 of the shielding box by screws.

[0019] After the flexible board fixing clamp 1 clamps the flexible circuit board 2, there is no hard contact. The contact surfaces are the first fluororubber sealing pad 1.2, the second fluororubber sealing pad 1.5, and the third fluororubber sealing pad 1.6, all of which are made of elastic material fluororubber. They not only protect the surface of the flexible circuit board 2, but also clamp and fix it. At the same time, they are removable and have high maintainability.

Claims

1. A flexible plate fixing structure, characterized in that: It includes a flexible board fixing clamp, which is arranged at the lead-out end of the flexible circuit board and fixes the flexible circuit board; the contact surface between the flexible board fixing clamp and the flexible circuit board is an elastic material, the flexible board fixing clamp also plays the role of clamping the flexible circuit board, and the flexible board fixing clamp is fixed to the side wall of the bottom frame of the shielding box by two M5 screws; the flexible board fixing clamp includes a base, a first fluororubber sealing pad, a left pressure frame, a right pressure frame, a second fluororubber sealing pad, and a third fluororubber sealing pad, the third fluororubber sealing pad is pasted in the groove of the left pressure frame of the flexible board fixing clamp, the second fluororubber sealing pad is pasted in the groove of the right pressure frame, and the first fluororubber sealing pad is pasted in the groove of the base of the flexible board fixing clamp.

2. A flexible plate fixing structure according to claim 1, characterized in that: The left and right pressing frames with sealing pads attached thereto are inserted into the flexible circuit board from left and right directions, and the left and right pressing frames are fixed to the base of the flexible circuit board fixing clamp by screws.

Images