WO2012152042A1

WO2012152042A1 - Printed circuit board pulling block

Info

Publication number: WO2012152042A1
Application number: PCT/CN2011/084921
Authority: WO
Inventors: 李恒
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-30
Filing date: 2011-12-29
Publication date: 2012-11-15
Also published as: CN202143294U

Abstract

Provided is a printed circuit board (PCB) pulling block. The pulling block (3) is mounted on a PCB (2) and located between the PCB (2) and a chassis (4). The pulling block (3) is provided with a threaded through hole (5), the PCB (2) is provided with a through hole, and the chassis (4) is provided with a threaded hole (7). The center lines of the threaded through hole (5), the through hole, and the threaded hole (7) coincide, the aperture of the through hole is larger than or equal to the aperture of the threaded through hole (5), and the aperture of the threaded through hole (5) is larger than the aperture of the threaded hole (7). Because the threaded aperture of the pulling block (3) is larger than the threaded aperture of the chassis (4), a screw (1) mated with the pulling block (3) cannot enter into the threaded hole (7) of the chassis (4), and by screwing in the screw, the PCB (2) can be jacked up under the thread effect, and the separation and dismounting of the PCB (2) from the chassis (4) are realized.

Description

一种印制电路板起拔块技术领域 Printed circuit board lifting block

本实用新型涉及电路技术领域，特别是涉及一种印制电路板 ( Printed Circuit Board, PCB )起拔块。背景技术 The utility model relates to the field of circuit technology, in particular to a printed circuit board (PCB) lifting block. Background technique

在电子设备或者装置上，一般都会使用 PCB。通常，使用螺钉将 PCB 固定在机箱或者机壳内部。目前，为了满足市场需求，很多箱体类电子设备结构很紧凑；而且，为了给元器件散热，还使用了导热衬垫或导热胶，致使在设备维修调试时要拆卸 PCB很困难。现有技术中，如图 1、图 2所示， PCB 2安装在机箱 1内，为了拆卸 PCB 2, 在 PCB 2上设计了专门的提手 3 , 用于拆卸 PCB 2。但该方案存在以下缺陷：一、因为机箱内部空间太小，人手不好用力；二、因为使用的导热衬垫或导热胶具有一定的粘性，它将 PCB上的元器件与机箱壳体粘住，需要较大的力才能将 PCB取下，在较小的空间内，仍然不方便拆卸 PCB。 PCBs are commonly used on electronic devices or devices. Typically, use screws to secure the PCB inside the chassis or enclosure. At present, in order to meet the market demand, many cabinet-type electronic devices are compact in structure; and, in order to dissipate heat from components, thermal insulation pads or thermal conductive adhesives are used, which makes it difficult to disassemble the PCB during maintenance and repair of the equipment. In the prior art, as shown in Fig. 1 and Fig. 2, the PCB 2 is installed in the chassis 1. In order to disassemble the PCB 2, a special handle 3 is designed on the PCB 2 for disassembling the PCB 2. However, the solution has the following defects: First, because the internal space of the chassis is too small, the human hand is not good; Second, because the thermal pad or thermal adhesive used has a certain viscosity, it sticks the components on the PCB to the chassis case. Living, it takes a lot of force to remove the PCB, and it is still inconvenient to disassemble the PCB in a small space.

另外，由于导热衬垫或导热胶具有一定的粘性，特别是经过紧压之后导热衬垫的粘结力会变得更大，如果在 PCB上使用的导热衬垫或导热胶比较多，需要很大的力才能将 PCB取下。在不采取特别措施的前提下，维修调试人员拆卸 PCB 的操作会很不方便，还可能会发生因为用力过大导致 PCB及其上元器件损坏的情况。实用新型内容 In addition, since the thermal pad or the thermal paste has a certain viscosity, especially after the pressing, the bonding force of the thermal pad becomes larger. If the thermal pad or the thermal adhesive used on the PCB is more, it needs to be very A large force can remove the PCB. It is inconvenient for maintenance and commissioning personnel to disassemble the PCB without special measures. It may also cause damage to the PCB and its components due to excessive force. Utility model content

本实用新型要解决的技术问题是提供一种 PCB起拔块，用以解决现有技术中 PCB拆卸不方便的问题。为解决上述技术问题，本实用新型提供一种 PCB起拔块，所述起拔块安装在 PCB上，位于 PCB与机箱之间；所述起拔块上设置有螺纹通孔，所述 PCB上设置有通孔，所述机箱上设置有螺纹孔；其中，所述螺纹通孔、通孔和螺纹孔的中心线重合，所述通孔的孔径大于等于所述螺纹通孔，所述螺纹通孔的孔径大于所述螺纹孔。 The technical problem to be solved by the present invention is to provide a PCB lifting block for solving the problem of inconvenient PCB disassembly in the prior art. In order to solve the above technical problem, the present invention provides a PCB lifting block, the lifting block is mounted on a PCB, and is located between the PCB and the chassis; the lifting block is provided with a threaded through hole, and the PCB is provided on the PCB. a through hole is disposed, the chassis is provided with a threaded hole; wherein, the threaded through hole, the through hole and the center line of the threaded hole are coincident, the through hole has a hole diameter greater than or equal to the threaded through hole, and the threaded through The aperture has a larger aperture than the threaded aperture.

进一步，所述起拔块安装在所述 PCB上。 Further, the lifting block is mounted on the PCB.

进一步，所述起拔块与所述 PCB接触一面设置有多个插脚；所述 PCB 上设置有与所述多个插脚对应的插孔；所述多个插脚一对一地***所述多个插孔中。 Further, a plurality of pins are disposed on a side of the drawing block in contact with the PCB; a jack corresponding to the plurality of pins is disposed on the PCB; and the plurality of pins are inserted into the plurality of pins one-to-one In the jack.

进一步，所述插脚焊接在所述插孔内。 Further, the pins are soldered in the socket.

进一步，所述起拔块与所述 PCB接触一面设置有四个插脚；所述 PCB 上设置有与所述四个插脚对应的四个插孔，所述四个插脚一对一地***所述四个插孔中。 Further, the lifting block is provided with four pins on one side of the PCB; the PCB is provided with four jacks corresponding to the four pins, and the four pins are inserted one-to-one Among the four jacks.

本实用新型有益效果如下： The beneficial effects of the utility model are as follows:

本实用新型通过在 PCB上与机箱安装面之间设置起拔块，由于起拔块的螺纹孔径大于机箱上的螺纹孔径，因此，与起拔块配合的螺钉无法进入机箱的螺纹孔，通过旋入螺钉，在螺纹的作用下，就会将 PCB顶起，从而实现 PCB与机箱的分离、拆卸。附图说明 The utility model provides a lifting block between the PCB and the mounting surface of the chassis. Since the threaded aperture of the lifting block is larger than the threaded aperture on the chassis, the screw matched with the lifting block cannot enter the threaded hole of the chassis and is rotated. Insert the screw, under the action of the thread, the PCB will be jacked up, thus separating and disassembling the PCB from the chassis. DRAWINGS

图 1 是现有技术中 PCB安装在机箱内的结构示意图； 1 is a schematic structural view of a PCB installed in a chassis in the prior art;

图 2是现有技术中 PCB安装上安装提手的结构示意图； 2 is a schematic structural view of a handle mounted on a PCB in the prior art;

图 3 是本实用新型实施例中通过起拔块将 PCB安装在机箱上的结构示意图；图；图 5 是本实用新型实施例中起拔块的结构示意图； 3 is a schematic structural view of a PCB mounted on a chassis by lifting a block in the embodiment of the present invention; Figure 5 is a schematic structural view of a lifting block in the embodiment of the present invention;

图 6是本实用新型实施例中 PCB上安装起拔块的结构示意图；图 7是本实用新型实施例中 PCB上安装起拔块的局部放大图；图 8是本实用新型实施例中 PCB上安装起拔块的局部剖视图。具体实施方式 6 is a schematic structural view of a mounting block on a PCB according to an embodiment of the present invention; FIG. 7 is a partial enlarged view of a mounting block on a PCB in the embodiment of the present invention; FIG. 8 is a PCB on an embodiment of the present invention. Install a partial cutaway view of the pull block. detailed description

为了解决现有技术中 PCB拆卸不方便的问题，本实用新型提供了一种 PCB起拔块。以下结合附图以及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不限定本实用新型。 In order to solve the problem of inconvenient PCB disassembly in the prior art, the present invention provides a PCB lifting block. The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

如图 3~8所示，本实用新型实施例涉及一种 PCB起拔块，起拔块 3安装在 PCB 2上，位于 PCB 2与机箱 4 (或者为机壳或安装 PCB的底板 )之间：起拔块 3上设置有螺纹通孔 5 , PCB 2上设置有通孔（图 3、 4中螺钉穿过 PCB 2的通孔），机箱 4上设置有螺纹孔 7; 其中，螺纹通孔 5、 PCB 2 的通孔和螺纹孔 7的中心线重合， PCB 2上的通孔的孔径大于等于起拔块 3 上的螺纹通孔 5,起拔块 3上的螺纹通孔 5的孔径大于机箱 4上的螺纹孔 7。 As shown in FIG. 3-8, the embodiment of the present invention relates to a PCB lifting block. The lifting block 3 is mounted on the PCB 2, and is located between the PCB 2 and the chassis 4 (or the chassis or the bottom plate on which the PCB is mounted). : the pulling block 3 is provided with a threaded through hole 5, the PCB 2 is provided with a through hole (the through hole of the screw passing through the PCB 2 in FIGS. 3 and 4), and the chassis 4 is provided with a threaded hole 7; wherein, the threaded through hole 5. The through hole of the PCB 2 and the center line of the threaded hole 7 coincide. The hole diameter of the through hole on the PCB 2 is greater than or equal to the threaded through hole 5 on the drawing block 3. The diameter of the threaded through hole 5 on the pulling block 3 is larger than A threaded hole 7 in the chassis 4.

起拔块 3与 PCB 2接触一面设置有若干个插脚 6 (图 5中所示为四个，也可以设计为三个，或多个）， PCB 2上设置有与若干个插脚 6对应的插孔 8, 当插脚 6为四个时，四个插脚 6***四个插孔 8中。插脚 6可以通过焊接固定在插孔 8内，从而实现将起拔块 3固定在 PCB 2上。 The pick-up block 3 is disposed on the side of the PCB 2 with a plurality of pins 6 (four as shown in FIG. 5, or three or more), and the PCB 2 is provided with a plug corresponding to the plurality of pins 6. Hole 8, when the pins 6 are four, the four pins 6 are inserted into the four jacks 8. The pin 6 can be fixed in the socket 8 by soldering, thereby fixing the lifting block 3 to the PCB 2.

本实用新型实施例提供的起拔块 3对 PCB 2起支撑和起拔作用。在工作状态下，起拔块 3的作用是支撑 PCB 2, 如图 3所示，与机箱 4上的螺纹孔 7配合的螺钉 1穿过 PCB 2上的通孔和起拔块 3上的螺纹通孔 5 ,将 PCB 2固定在机箱 4上，起拔块 3起支撑 PCB 2的作用。在设备维修调试时，如图 4所示，取下与机箱 4上的螺纹孔 7配合的螺钉，拧入与起拔块 3上的螺纹通孔 5配合的螺钉 1 (需要注意的是，图 4中的螺钉 1直径大于图 3中的螺钉 1 )。随着螺钉 1的旋转，螺钉 1的头部伸出起拔块 3 , 由于螺钉 1 的直径大于机箱 4上的螺纹孔 7, 因此，此时螺钉 1不能旋入机箱 4上的螺纹孔 7。在螺旋力的作用下，螺钉将起拔块 3连同 PCB 2从与机箱 4结合处顶起，从而实现了 PCB板 2与机箱 4的分离。 The lifting block 3 provided by the embodiment of the present invention supports and lifts the PCB 2 . In the working state, the lifting block 3 functions to support the PCB 2. As shown in FIG. 3, the screw 1 mated with the threaded hole 7 in the chassis 4 passes through the through hole on the PCB 2 and the thread on the lifting block 3. The through hole 5 fixes the PCB 2 on the chassis 4, and the lifting block 3 functions to support the PCB 2. When the equipment is being repaired and repaired, as shown in Fig. 4, the screw that cooperates with the threaded hole 7 in the casing 4 is removed, and the screw 1 that is engaged with the threaded through hole 5 on the lifting block 3 is screwed (note that the figure The diameter of the screw 1 in 4 is larger than that in Figure 3. Screw 1). As the screw 1 rotates, the head of the screw 1 projects out of the pull-out block 3. Since the diameter of the screw 1 is larger than the threaded hole 7 in the chassis 4, the screw 1 cannot be screwed into the threaded hole 7 in the chassis 4 at this time. Under the action of the screw force, the screw lifts the lifting block 3 together with the PCB 2 from the joint with the chassis 4, thereby realizing the separation of the PCB board 2 from the chassis 4.

由上述实施例可以看出，本实用新型通过在 PCB与机箱之间设置起拔块，由于起拔块的螺纹孔径大于机箱上的螺纹孔径，因此，与起拔块配合的螺钉无法进入机箱上的螺纹孔，随着螺钉的旋转，在螺纹的作用下，螺钉的头部就会将 PCB顶起，进而实现 PCB与机箱的分离、拆卸。在 PCB 上安装起拔块，大大方便了调试维修人员拆卸 PCB的操作，提高了生产效率，也避免了因为用力过大导致 PCB板上元器件损坏的情况，有效降低生产成本。 As can be seen from the above embodiment, the utility model provides a lifting block between the PCB and the chassis. Since the threaded aperture of the lifting block is larger than the threaded aperture on the chassis, the screw matched with the lifting block cannot enter the chassis. The threaded hole, with the rotation of the screw, under the action of the thread, the head of the screw will jack up the PCB, thereby separating and disassembling the PCB from the chassis. The installation of the lifting block on the PCB greatly facilitates the operation of the debugging and maintenance personnel to disassemble the PCB, improves the production efficiency, and avoids the damage of components on the PCB board due to excessive force, thereby effectively reducing the production cost.

尽管为示例目的，已经公开了本实用新型的优选实施例，本领域的技术人员将意识到各种改进、增加和取代也是可能的，因此，本实用新型的范围应当不限于上述实施例。 While the preferred embodiment of the invention has been disclosed for illustrative purposes, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.

Claims

权利要求书 Claim

1、一种印制电路板 PCB起拔块，其特征在于，所述起拔块安装在 PCB 上，位于所述 PCB与机箱之间：所述起拔块上设置有螺纹通孔，所述 PCB 上设置有通孔，所述机箱上设置有螺纹孔；其中，所述螺纹通孔、通孔和螺纹孔的中心线重合，所述通孔的孔径大于等于所述螺纹通孔，所述螺纹通孔的孔径大于所述螺纹孔。 A printed circuit board PCB lifting block, wherein the lifting block is mounted on a PCB between the PCB and the chassis: the lifting block is provided with a threaded through hole, a through hole is disposed on the PCB, and the threaded hole is disposed on the chassis; wherein a center line of the threaded through hole, the through hole and the threaded hole is coincident, and an aperture of the through hole is greater than or equal to the threaded through hole, The threaded through hole has a larger diameter than the threaded hole.

2、如权利要求 1所述的 PCB起拔块，其特征在于，所述起拔块安装在所述 PCB上。 The PCB drawing block according to claim 1, wherein the lifting block is mounted on the PCB.

3、如权利要求 1或 1所述的 PCB起拔块，其特征在于，所述起拔块与所述 PCB接触一面设置有多个插脚；所述 PCB上设置有与所述多个插脚对应的插孔；所述多个插脚一对一地***所述多个插孔中。 The PCB lifting block according to claim 1 or 1, wherein a plurality of pins are disposed on a side of the drawing block in contact with the PCB; and the PCB is provided with a corresponding one of the plurality of pins a jack; the plurality of pins are inserted into the plurality of jacks one-to-one.

4、如权利要求 3所述的 PCB起拔块，其特征在于，所述插脚焊接在所述插孔内。 The PCB lifting block of claim 3, wherein the pins are soldered within the socket.

5、如权利要求 3所述的 PCB起拔块，其特征在于，所述起拔块与所述 PCB接触一面设置有四个插脚；所述 PCB上设置有与所述四个插脚对应的四个插孔，所述四个插脚一对一地***所述四个插孔中。 The PCB lifting block according to claim 3, wherein the lifting block is provided with four pins on a side of the PCB; and the PCB is provided with four corresponding to the four pins. The jacks are inserted into the four jacks one-to-one.