Integrated circuit rack

Abstract

The utility model relates to an integrated circuit placing carrier, in particular to an integrated circuit frame. In order to solve the problem that a traditional carrier is too flexible, an outer shell is inserted into the inner shell, the outer contour of the cross section of the inner shell and the inner contour of the cross section of the outer shell are both circular, the axis of the inner shell coincides with the axis of the outer shell, the outer shell can rotate around the axis of the inner shell, and an annular groove located below the inner shell is formed in the inner circumference of the outer shell. The lower end of the inner shell is fixedly connected with a supporting part; the pretensioner locks the shell through the contact part abutting against the shell, and when the protruding part I is pressed, the shell can be rotated. In order to improve the convenience, an extension piece linked with the convex part I can be additionally arranged, when the extension piece is attached to the outer wall of the shell, the extension piece is directly stirred to do circular motion, the friction force between the extension piece and the shell is utilized to drive the shell to rotate, and meanwhile, the triggering area for enabling the clamping part to move is increased.

Description

Technical Field

[0001] The utility model relates to an integrated circuit placement carrier, more specifically an integrated circuit frame. Background Art

[0002] The detection of integrated circuits on the PCBA board is the most critical quality control link in the entire PCBA processing and manufacturing process, which determines the final performance of the product. The main test items include ICT test, FCT test, aging test and fatigue test. Among them, manual visual inspection is a relatively basic method. With the help of handheld tools, the integrated circuit is contacted, and a magnifying glass and a computer are used to display the contact points of the handheld tools and the test results to observe the welding conditions between the circuit and the electronic components, and check whether there are any, tombstones, bridges, excess tin, and whether the solder joints are bridged, whether there is insufficient soldering and welding incompleteness. The conventional method is to use a tray-like shelf as a support for the PCBA board, and change the orientation of the component to be tested by changing the placement direction of the PCBA board, so as to continuously contact the points to be tested in each area in a convenient hand-held posture. However, when changing the position of the PCBA board, it is necessary to handle it gently. In order to simplify the operation process, the existing solution is to enable the tray to rotate around a base by rolling or sliding friction, so there is no need to pick up and place the PCBA board, and only the tray needs to be rotated. However, the flexibility of the tray rotation is very high. Although it is convenient to rotate, there are also cases of accidental touch that cause the tray to rotate, which still needs to be optimized. Utility Model Content

[0003] The utility model provides an integrated circuit frame, which aims to flexibly rotate and lock a tray frame.

[0004] The above purpose is achieved through the following technical solutions:

[0005] An integrated circuit frame comprises an inner shell, an outer shell is inserted on the inner shell, the outer contour of the cross section of the inner shell and the inner contour of the cross section of the outer shell are both circular, the axis of the inner shell coincides with the axis of the outer shell, the outer shell can rotate around the axis of the inner shell, the inner periphery of the outer shell is provided with an annular groove located below the inner shell, the lower end of the inner shell is fixedly connected to a support portion, and also comprises a preloader;

[0006] The pretensioner comprises: a base, a straight rod slidably connected to the base, a contact portion fixed to one end of the straight rod away from the base, a clamping portion fixed to the contact portion, a spring arranged between the contact portion and the base, a connecting piece fixed to the lower end of the contact portion, and a convex portion I fixed to the connecting piece;

[0007] Among them, the base is fixed to the lower end of the inner shell, the clamping part is located in the annular groove, the spring is in a compressed state, the elastic force provided by the spring can make the contact part press against the inner wall of the outer shell, and the outer end of the protrusion I is located outside the outer shell.

[0008] The beneficial effects of the integrated circuit frame of the utility model are:

[0009] The outer shell is locked by the contact part against the outer shell, and the outer shell can be rotated when the convex part I is pressed. In order to improve the convenience, an extension piece linked with the convex part I can be added. When the extension piece is attached to the outer wall of the outer shell, the extension piece can be directly moved to make a circular motion. The friction between the extension piece and the outer shell drives the outer shell to rotate, and at the same time increases the triggering area for moving the clamping part. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an overall schematic diagram of the first embodiment of the integrated circuit rack unlocking housing of the utility model;

[0011] Figure 2 for Figure 1 Another view of the structure;

[0012] Figure 3 for Figure 2 A partial enlarged view of point Ⅰ in the middle;

[0013] Figure 4 is a structural schematic diagram of a pretensioner;

[0014] Figure 5 for Figure 4 A partial enlarged view of the middle II;

[0015] Figure 6 This is a schematic diagram of the structure after the shell is cut;

[0016] Figure 7 is a schematic diagram of the structure of the extension piece;

[0017] Figure 8 This is a schematic diagram of the overall structure of the second embodiment of the unlocking housing of the utility model;

[0018] Fig. 9 It is a schematic diagram of the structure of convex part II;

[0019] Fig.10 The overall structural diagram of the second embodiment is for solving the problem that the radial force applied when the clamping part moves radially causes the integrated circuit frame to move. DETAILED DESCRIPTION

[0020] An integrated circuit frame, reference Figure 1 , 2 , 4 to 6, comprising an inner shell 1 of a disc structure, an outer shell 7 as a tray frame is inserted on the inner shell 1, the inner wall of the outer shell 7 is wrapped on the outer wall of the inner shell 1, the axis of the inner shell 1 coincides with the axis of the outer shell 7, the outer shell 7 is wrapped on the inner shell 1 and can rotate on the inner shell 1, so that an annular groove 8 is provided on the inner periphery of the outer shell 7, the annular groove 8 is located below the inner shell 1, and the lower end of the inner shell 1 is fixedly connected to a support portion 13 lower than the outer shell 7;

[0021] Preferably, a flexible insulating layer, such as a rubber layer, is fixed to the upper surface of the housing 7 .

[0022] As further explained, the reference also includes a pretensioner;

[0023] The pretensioner includes: a base 2 fixed to the lower end of the inner shell 1, and two round holes are provided on the base 2 to enable the straight rod 3 to be inserted into the round holes and slide back and forth in the round holes. For ease of description, Figures 2 to 4 In the embodiment, the front ends of the two straight rods 3 are fixedly connected with a contact portion 4, the front ends of the contact portions 4 are fixedly connected with a clamping portion 5 protruding forward, a spring 6 in a compressed state is sleeved on the straight rods 3, and a connecting piece 9 is fixedly connected to the lower ends of the contact portions 4. Figure 3 , a convex portion Ⅰ10 is fixedly connected to the connecting member 9, and the connecting member 9 makes the installation position of the convex portion Ⅰ10 extend downward, so that the convex portion Ⅰ10 is lower than the housing 7, and the front end of the convex portion Ⅰ10 is located outside the housing 7;

[0024] Among them, the base 2 can be installed on the lower end of the inner shell 1 in a detachable connection manner, for example, using screws, the clamping portion 5 is located in the annular groove 8, and the elastic force provided by the spring 6 can make the contact portion 4 press against the inner wall of the outer shell 7, so that friction is generated between the contact portion 4 and the inner wall of the outer shell 7. Since the outer shell 7 is stationary under normal conditions, the contact portion 4 is used to keep the outer shell 7 stationary; on the other hand, the outer end of the protrusion Ⅰ10 is located on the outer side of the outer shell 7. When the protrusion Ⅰ10 is pressed, the protrusion Ⅰ10 approaches the outer shell 7, and the contact portion 4 is separated from the inner wall of the outer shell 7, so that the outer shell 7 is not affected by the friction provided by the contact portion 4, so that the outer shell 7 can rotate, thereby driving the PCBA board on itself to change direction. This is the first embodiment of unlocking the outer shell 7;

[0025] Preferably: when the contact portion 4 contacts the inner wall of the housing 7, there is sliding friction between the lower end surface or the upper and lower end surfaces of the clamping portion 5 and the housing 7, thereby limiting the degree of freedom of the housing 7 in the longitudinal direction;

[0026] When the contact portion 4 contacts the inner wall of the housing 7, there is a gap between the end surface of the clamping portion 5 close to the housing 7 and the inner wall of the housing 7. At the same time, when the end of the protrusion Ⅰ10 away from the housing 7 coincides with the outer wall of the housing 7, the contact portion 4 is separated from the inner wall of the housing 7, and the clamping portion 5 is located in the annular groove 8, so as to keep the longitudinal freedom of the housing 7 limited.

[0027] When the contact portion 4 contacts the inner wall of the housing 7, the distance between the straight rod 3 and the base 2 is the maximum distance, and the straight rod 3 is still slidably connected in the base 2;

[0028] Although the above solution can make the outer shell 7 easy to position, two actions are required during rotation. One is to press the convex part I 10, and the other action is to rotate the outer shell 7 again. There is also an inconvenient operation situation. To solve the above problems, in combination with Figure 7 and 8 , the second embodiment is adopted:

[0029] An extension member 11 is fixedly connected to one end of the convex part I 10 away from the outer shell 7. The extension member 11 extends equidistantly around the outer wall surface of the outer shell 7 and can achieve surface contact with the outer wall surface of the outer shell 7. It is stipulated that the center of the outer shell 7 is the inner side. The maximum distance between the inner end surface of the extension member 11 and the outer wall surface of the outer shell 7 is denoted as S1, and the minimum distance for the clamping part 5 to disengage from the annular groove 8 is denoted as S2. When S1 < S2 and this condition is met, when pressing the extension member 11 against the outer wall of the outer shell 7, directly drive the extension member 11 to make a circular motion. Utilize the frictional force between the extension member 11 and the outer wall of the outer shell 7 to drive the outer shell 7 to rotate self - clockwise. At this time, the clamping part 5 is still in the annular groove 8. In this embodiment, there is no need to separately拨动 the outer shell 7, and an unlocking operation can be completed with a顺带动作 of operating the clamping part 5, while increasing the triggering area of the clamping part 5.

[0030] When the above solution makes the clamping part 5 move radially, the radial force has the possibility of making the integrated circuit rack move. The first embodiment adopted is: Refer to Figure 2 , a square groove is provided at the lower end of the support part 13, and a counterweight block is detachably connected in the square groove;

[0031] The second embodiment is: In combination with Fig. 9 and 10 , two pre - tighteners are arranged in mirror symmetry. The two end parts of the extension member 11 in the circumferential direction are free ends. A convex part II 12 is fixedly connected to the free end of the extension member 11. The convex part II 12 extends in the radial direction. The distance between the adjacent convex parts II 12 of the two pre - tighteners is denoted as S3, and S3 > S1. In Fig.10 , when the index finger and thumb respectively pinch the two convex parts II 12 on the left or right side, the front and rear extension members 11 approach and stick to the outer shell 7. At this time, the index finger and thumb can drive the outer shell 7 to rotate self - clockwise by making a circular motion, and an unlocking operation can also be completed with one operation, and the opposing force will not cause the integrated circuit rack to move.

Claims

1. An integrated circuit frame, comprising an inner shell (1), characterized in that: An outer shell (7) is inserted into the inner shell (1); the outer contour of the cross section of the inner shell (1) and the inner contour of the cross section of the outer shell (7) are both circular; the axis of the inner shell (1) coincides with the axis of the outer shell (7); the outer shell (7) can rotate around the axis of the inner shell (1); an annular groove (8) is provided on the inner periphery of the outer shell (7) and is located below the inner shell (1); a support portion (13) is fixedly connected to the lower end of the inner shell (1); and a preloader is also included; The pretensioner comprises: a base (2), a straight rod (3) slidably connected to the base (2), a contact portion (4) fixed to one end of the straight rod (3) away from the base (2), a clamping portion (5) fixed to the contact portion (4), a spring (6) arranged between the contact portion (4) and the base (2), a connecting member (9) fixed to the lower end of the contact portion (4), and a convex portion I (10) fixed to the connecting member (9); The base (2) is fixed to the lower end of the inner shell (1), the clamping portion (5) is located in the annular groove (8), the spring (6) is in a compressed state, and the elastic force provided by the spring (6) can make the contact portion (4) press against the inner wall of the outer shell (7), and the outer end of the protrusion I (10) is located outside the outer shell (7).

2. The integrated circuit frame according to claim 1, characterized in that: When the contact portion (4) contacts the inner wall of the outer shell (7), sliding friction occurs between the lower end surface or the upper and lower end surfaces of the clamping portion (5) and the outer shell (7).

3. The integrated circuit frame according to claim 2, characterized in that: When the contact portion (4) contacts the inner wall of the housing (7), a gap exists between the end surface of the clamping portion (5) close to the housing (7) and the inner wall of the housing (7).

4. The integrated circuit frame according to claim 1, characterized in that: When the contact portion (4) contacts the inner wall of the housing (7), the distance between the straight rod (3) and the base (2) is the maximum distance, and at this time the straight rod (3) is still slidably connected in the base (2).

5. The integrated circuit frame according to claim 4, characterized in that: The base (2) is provided with a circular hole for the straight rod (3) to be inserted, so that the straight rod (3) can be slidably connected in the base (2).

6. The integrated circuit frame according to claim 1, characterized in that: When the end of the protrusion I (10) away from the housing (7) coincides with the outer wall surface of the housing (7), the contact portion (4) is separated from the inner wall of the housing (7), and the clamping portion (5) is located in the annular groove (8).

7. The integrated circuit frame according to claim 6, characterized in that: An extension piece (11) is fixedly connected to one end of the convex portion I (10) away from the housing (7), and the extension piece (11) can achieve surface contact with the outer wall surface of the housing (7). The maximum distance between the end surface of the extension piece (11) close to the housing (7) and the outer wall surface of the housing (7) is recorded as S1, and the minimum distance for the clamping portion (5) to separate from the annular groove (8) is recorded as S2, S1 <S2。 8. The integrated circuit frame according to claim 7, characterized in that: The extension piece (11) has two free ends, and a convex part II (12) is fixedly connected to the free end of the extension piece (11). Two pretensioners are arranged in mirror symmetry, and the distance between adjacent convex parts II (12) of the two pretensioners is recorded as S3, S3>S1.

9. The integrated circuit frame according to claim 8, characterized in that: A square groove is provided at the lower end of the support portion (13), and a counterweight block is detachably connected in the square groove.

10. The integrated circuit frame according to claim 1, characterized in that: A flexible insulating layer is fixedly connected to the upper surface of the shell (7).

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