CN218994762U

CN218994762U - PCB section sample fixing clamp

Info

Publication number: CN218994762U
Application number: CN202223350868.3U
Authority: CN
Inventors: 王艮辉; 陈斐健; 张维说; 何碧红; 凡丹丹; 张龙生; 温万春
Original assignee: Meizhou Benchuang Electronics Co ltd
Current assignee: Meizhou Benchuang Electronics Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-09
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a PCB slice sample fixing clamp; belongs to the technical field of PCB slice fixing; the technical key point of the device comprises a base with a horizontal and smooth surface, wherein a clamping notch is arranged on one side of the base, the clamping notch is triangular, and the included angle alpha is 70-85 degrees; clamping plates which are respectively parallel to the inner walls of the two sides of the clamping notch are arranged in the clamping notch, and the distance between the end parts of the two clamping plates at the opening end is 5-10mm; a plurality of tensioning springs are connected between each clamping plate and the inner wall of the clamping notch; the utility model aims to provide the PCB slice sample fixing clamp which has a simple structure, does not need consumables and can be reused; for fixing the PCB slice samples as they are observed.

Description

PCB section sample fixing clamp

Technical Field

The utility model relates to a fixing clamp, in particular to a PCB slice sample fixing clamp.

Background

At present, a large number of sections of a PCB factory need to be observed and measured by a microscope every day, and in order to enable an observed sampling sheet to be placed on a stage of the microscope vertically and stably, a mode of solidifying the observation sheet by resin (crystal glue) is generally adopted for fixing the simple sections. The method can ensure that the slice is stably placed on the object stage, but has long manufacturing time and lower observation efficiency, and meanwhile, the method can consume expendables such as crystal glue, curing agent, catalyst and the like, so that the observation cost is higher.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the PCB slice sample fixing clamp which is simple in structure, does not need consumables and can be reused.

The technical scheme of the utility model is realized as follows: the utility model provides a PCB section sample fixing clamp, includes the smooth base of surface level, base one side is equipped with the centre gripping breach, the centre gripping breach is triangle-shaped and contained angle alpha is 70-85.

Clamping plates which are respectively parallel to the inner walls of the two sides of the clamping notch are arranged in the clamping notch, and the distance between the end parts of the two clamping plates at the opening end is 5-10mm; a plurality of tensioning springs are connected between each clamping plate and the inner wall of the clamping notch.

In the above-mentioned PCB section sample fixing clamp, one end of the clamping plate, which is close to the outer side, is formed with a guiding part in an inclined manner towards the inner wall of the clamping notch.

In the PCB slice sample fixing clamp, one end of the tensioning spring is fixedly connected to the clamping plate, and the other end of the tensioning spring is provided with the n-shaped insert block; the base is provided with a jack matched with the n-shaped plug block; when the n-shaped plug block is far away from the pins of the clamping plate and is inserted into the insertion holes, the inner wall of the other pin is tightly attached to the inner wall of the clamping notch.

After the structure is adopted, the PCB slice sample piece is horizontally placed on the base to observe the upper surface and the lower surface, then the clamping notch is clamped to be vertical to the table top to observe the side surface of the PCB slice sample piece, and the clamping notch is triangular, so that the PCB slice sample piece with different plate thickness sizes can be adapted. And the glue slice is manufactured without consuming articles such as resin, so that the time is effectively saved, the observation efficiency is improved, and the cost is reduced.

Simultaneously, can increase the stability when the centre gripping through setting up tensioning spring and grip block, further guarantee and observe efficiency.

Drawings

The utility model is described in further detail below in connection with the embodiments in the drawings, but is not to be construed as limiting the utility model in any way.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the base of the present utility model.

Fig. 3 is a schematic structural view of the clamping plate of the present utility model.

In the figure: 1. a base; 2. a clamping notch; 3. a clamping plate; 4. tensioning a spring; 5. a guide part; 6. an n-shaped insert; 7. and a jack.

Detailed Description

Referring to fig. 1, the fixing clamp for a PCB slice sample piece comprises a base 1 with a horizontal smooth surface, wherein a clamping notch 2 is arranged on one side of the base 1, and the clamping notch 2 is triangular and has an included angle alpha of 70-85 degrees. Through experiment of limited times, when contained angle alpha is 80 and the tip interval of open end is 8mm, can adapt to the conventional plate thickness size of current PCB board, and can keep stable when PCB section sample card in the centre gripping breach, takes place to rock less.

Clamping plates 3 which are respectively parallel to the inner walls of the two sides of the clamping gap 2 are arranged in the clamping gap 2, and the distance between the end parts of the two clamping plates 3 at the opening end is 5-10mm; a plurality of tensioning springs 4 are connected between each clamping plate 3 and the inner wall of the clamping notch 2. When setting up buffer spring and grip block, the tip interval that the grip block open end needs suitably to increase in order to make two grip blocks be located the open end is 8mm, can keep stable when further making PCB section sample card in the grip block, avoids taking place to rock.

In this embodiment, a guide portion 5 is formed at an end of the clamping plate 3 near the outer side and inclined toward the inner wall of the clamping notch 2. The PCB slice sample piece is conveniently pushed into the clamping plates to be clamped by the guide part.

In this embodiment, one end of the tensioning spring 4 is fixedly connected to the clamping plate 3, and an n-shaped insert 6 is arranged at the other end of the tensioning spring 4; the base 1 is provided with a jack 7 matched with the n-shaped plug 6; when the n-shaped plug 6 is far away from the pin of the clamping plate 3 and is inserted into the insertion hole 7, the inner wall of the other pin is tightly attached to the inner wall of the clamping notch 2. After adopting this structure, when spring ageing damage or grip block appear damaging, can change alone, further cost-effective. The fixing manner between the tensioning spring and the clamping plate can be a structure which is easily thought by a person skilled in the art, such as welding, glue adhesion or fastening connection, etc., which are the prior art and are not described herein again.

In the observation, the base is firstly placed on the microscope stage, the PCB slice sample piece is horizontally placed on the base, and the upper surface and the lower surface are observed. After the surface of the PCB slice sample is observed, the base is moved to align the clamping notch with the microscope objective, and the side surface of the PCB slice sample to be observed is vertically pushed upwards into the clamping notch for observation.

The above examples are provided for convenience of description of the present utility model and are not to be construed as limiting the utility model in any way, and any person skilled in the art will make partial changes or modifications to the utility model by using the disclosed technical content without departing from the technical features of the utility model.

Claims

1. The utility model provides a PCB section sample fixing clamp, includes smooth base (1) of surface level, its characterized in that, base (1) one side is equipped with centre gripping breach (2), centre gripping breach (2) are triangle-shaped and contained angle alpha is 70-85;

clamping plates (3) which are respectively parallel to the inner walls of the two sides of the clamping gap (2) are arranged in the clamping gap (2), and the distance between the end parts of the two clamping plates (3) at the opening end is 5-10mm; a plurality of tensioning springs (4) are connected between each clamping plate (3) and the inner wall of the clamping notch (2).

2. The fixing clamp for the PCB slicing sample according to claim 1, wherein a guide part (5) is obliquely formed at one end, close to the outer side, of the clamping plate (3) towards the inner wall of the clamping notch (2).

3. The fixing clamp for the PCB slicing sample piece according to claim 1, wherein one end of the tensioning spring (4) is fixedly connected to the clamping plate (3), and an n-shaped inserting block (6) is arranged at the other end of the tensioning spring (4); the base (1) is provided with a jack (7) matched with the n-shaped plug (6); when the pin of the n-shaped plug block (6) far away from the clamping plate (3) is inserted into the jack (7), the inner wall of the other pin is tightly attached to the inner wall of the clamping notch (2).