Furnace passing jig

Abstract

The utility model is suitable for the technical field of circuit board plug-ins, and provides a furnace-passing jig which comprises a base, a correction pressing plate and a connecting structure, a supporting face is formed on the base and used for supporting a circuit board assembly, and the connecting structure is detachably connected with the base and used for fixing the correction pressing plate to the side, away from the base, of the circuit board assembly. The correction pressing plate is provided with a plurality of jacks, the plurality of jacks are arranged in one-to-one correspondence with the plurality of plug-ins in the circuit board assembly, the welding parts of the corresponding plug-ins are inserted into the jacks, and the welding parts are positioned through the jacks of the correction pressing plate. The side, facing the base, of the correction pressing plate is at least provided with two limiting protrusions at intervals, and the limiting protrusions are used for making contact with the plug-in, so that the circuit board assembly is limited to the supporting face. Therefore, the positioning precision of each plug-in is improved, so that the form and location tolerances such as the height linear size and the vertical planeness of each plug-in can meet the requirements of a stacking combination mode, and the reject ratio of products is effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of circuit board plug-in technology, and more specifically, to a furnace passing fixture. Background Art

[0002] With the continuous progress of the times, electronic products are increasingly pursuing miniaturization and compactness. In order to reduce the volume of electronic products, plug-ins are usually installed on a PCB (Printed Circuit Board) in a stacked combination manner. Specifically, after the plug-in is inserted into the small board PCB, one end of the plug-in facing away from the small board PCB still needs to be connected to the large board PCB. Since each plug-in needs to have a reliable connection with the large board PCB, the accuracy requirements for inserting each plug-in into the small board PCB are relatively high.

[0003] Currently, during the plug-in process of the circuit board, the plug-in is mainly positioned on the PCB by using a pressing rod pressing process, and then wave soldering furnace passing treatment is performed. However, the positioning accuracy of the pressing rod pressing process is relatively low, and the plug-in is prone to skew, resulting in the inability of the plug-in to be smoothly connected to the large board PCB, and the failure to meet the requirements of geometric tolerances such as the height linear dimension and vertical flatness of the plug-in in the stacked combination manner, and the product rejection rate is relatively high. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a furnace passing fixture, aiming to solve the technical problem of relatively high product rejection rate caused by the way of positioning the plug-in by the pressing rod pressing process in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in this application is: providing a furnace passing fixture, including a base, a correction pressing plate, and a connection structure. A support surface is formed on the base, and the support surface is used to support the circuit board assembly. The connection structure is detachably connected to the base, and the connection structure is used to fix the correction pressing plate on the side of the circuit board assembly facing away from the base.

[0006] The correction pressing plate is provided with a plurality of jacks, and the plurality of jacks are arranged in one-to-one correspondence with a plurality of plug-ins in the circuit board assembly. Each jack is used to insert the welding part of the corresponding plug-in. At least two limiting protrusions are spaced apart on the side of the correction pressing plate facing the base, and the limiting protrusions are used to contact the plug-in.

[0007] In a possible design, the connection structure includes an upper cover pressing plate and a connection part that are connected to each other. The upper cover pressing plate is located on the side of the correction pressing plate facing away from the base to press and fix the correction pressing plate and the circuit board assembly on the support surface of the base, and the connection part is detachably connected to the base.

[0008] In a possible design, the upper cover pressing plate or the correction pressing plate is provided with a leveling structure. One side of the leveling structure facing the base has a first plane, and one side of the base facing the correction pressing plate is provided with a second plane, and the first plane is in contact with the second plane.

[0009] In a possible design, the leveling structure includes a guide post. One side surface of the guide post facing the base is the first plane; a matching portion is provided on the support surface, and one side of the matching portion facing the correction pressing plate is the second plane; one of the first plane and the second plane is provided with a protruding insertion portion, and the other is provided with a guide hole, and the insertion portion is inserted into the guide hole.

[0010] In a possible design, the number of the guide posts and the matching portions is multiple. The multiple matching portions are arranged at intervals on the support surface, and the multiple guide posts are arranged in one-to-one correspondence with the multiple matching portions, and each insertion portion is inserted into the corresponding guide hole.

[0011] In a possible design, the connecting portion includes a plurality of first clamping portions. The plurality of first clamping portions are arranged at intervals on the upper cover pressing plate, and a plurality of second clamping portions are provided on the base. The plurality of first clamping portions and the plurality of second clamping portions are arranged in one-to-one correspondence, and each first clamping portion is clamped with the corresponding second clamping portion.

[0012] In a possible design, the limiting protrusion includes a flexible portion, and the flexible portion is used to contact the plug-in component.

[0013] In a possible design, an installation groove is provided on the support surface, and the installation groove is used to accommodate the circuit board assembly.

[0014] In a possible design, at least one avoidance hole is provided on the support surface, and the avoidance hole is used to avoid the plug-in component.

[0015] In a possible design, in the depth direction of the jack, the depth of the jack is greater than or equal to the length of the welding portion of the corresponding plug-in component.

[0016] The beneficial effects of the furnace passing fixture provided by this application are as follows: Compared with the prior art, in the furnace passing fixture of this application, a plurality of jacks are arranged on the correction pressing plate, and the plurality of jacks are arranged in one-to-one correspondence with a plurality of plug-ins in the circuit board assembly, so that the welding parts of each plug-in can be inserted into the corresponding jacks. Since the positions of the plurality of jacks on the correction pressing plate are fixed, each welding part can be limited by each jack on the correction pressing plate. When the correction pressing plate is fixed relative to the base through the connection structure, the limiting protrusion contacts any plug-in, so that the circuit board assembly is stably clamped between the limiting protrusion and the base, and the relative positions of the plug-ins are fixed, thereby forming a good positioning effect on each plug-in, effectively improving the positioning accuracy of each plug-in, enabling the geometric tolerances such as the height linear dimension and the vertical flatness of each plug-in to meet the requirements of the stacking combination method, and effectively reducing the product defect rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a perspective assembly schematic diagram of the furnace passing fixture and the circuit board assembly provided by an embodiment of this application;

[0019] Figure 2 is an exploded view of the parts of the furnace passing fixture and the circuit board assembly provided by an embodiment of this application;

[0020] Figure 3 is another perspective assembly schematic diagram of the furnace passing fixture and the circuit board assembly provided by an embodiment of this application;

[0021] Figure 4 is an assembly schematic diagram of the upper cover pressing plate and the correction pressing plate of the furnace passing fixture provided by an embodiment of this application;

[0022] Figure 5 is yet another perspective assembly schematic diagram of the furnace passing fixture and the circuit board assembly provided by an embodiment of this application;

[0023] Figure 6 is a perspective assembly schematic diagram of the furnace passing fixture and the circuit board assembly provided by another embodiment of this application.

[0024] The label details involved in the above drawings are as follows:

[0025] 20. Circuit board assembly; 21. Circuit board; 22. Plug-in; 23. Welding part;

[0026] 100, base; 110, mating part; 111, second plane; 112, guiding hole; 120, mounting groove; 130, avoiding hole; 140, second clamping part; 150, clamping groove;

[0027] 200, correction pressing plate; 210, jack; 220, limiting protrusion;

[0028] 300, upper cover pressing plate; 310, guiding column; 311, first plane; 312, inserting part; 320, first clamping part. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0033] In order to illustrate the technical solutions described in this application, the following details them in combination with specific accompanying drawings and embodiments.

[0034] Such as Figures 1 to 5As shown in the figure, an embodiment of the present application provides a furnace passing fixture, including a base 100, a correction pressing plate 200 and a connection structure. A support surface is formed on the base, and the support surface is used to support the circuit board assembly. The connection structure is detachably connected to the base, and the connection structure is used to fix the correction pressing plate on the side of the circuit board assembly away from the base. The correction pressing plate 200 is provided with a plurality of jacks 210, and the plurality of jacks 210 are arranged in one-to-one correspondence with a plurality of plug-ins 22 in the circuit board assembly 20. Each jack 210 is used to insert the welding part 23 of the corresponding plug-in 22. At least two limiting protrusions 220 are spaced apart on the side of the correction pressing plate 200 facing the base 100, and the limiting protrusions 220 are used to contact the plug-in 22.

[0035] The furnace passing fixture provided by the embodiment of the present application is used to position each plug-in 22 in the circuit board assembly 20. The circuit board assembly 20 mainly includes a circuit board 21 and plug-ins 22 inserted on the circuit board 21. A welding part 23 is provided at one end of the plug-in 22 away from the circuit board 21. In the implementation of the present application, the welding part 23 is used to weld with a circuit board other than the circuit board 21 in the circuit board assembly 20. During the production process, first place the circuit board 21 on the support surface of the base 100, then insert a plurality of plug-ins 22 at the corresponding positions of the circuit board 21. After that, align each jack 210 in the correction pressing plate 200 with the corresponding plug-in 22 and press the correction pressing plate 200 against each plug-in 22 in the circuit board assembly 20, so that the welding part 23 of each plug-in 22 is inserted into the corresponding jack 210. Then, perform wave soldering furnace passing treatment on the furnace passing fixture installed with the circuit board assembly 20, so that each plug-in 22 is welded to the circuit board 21. After the wave soldering furnace passing treatment, separate the connection structure from the base 100 to remove the correction pressing plate 200 from each plug-in 22, take out the circuit board assembly 20, and finally weld the welding part 23 of the plug-in 22 in the circuit board assembly 20 after the wave soldering furnace passing treatment to a circuit board other than the circuit board 21 in the circuit board assembly 20.

[0036] It should be noted that the correction pressing plate 200 is fixed relative to the base 100 through the connection structure. Specifically, the correction pressing plate 200 is installed above the base 100 through the connection structure. Exemplarily, the connection structure is arranged between the correction pressing plate 200 and the base 100, and the connection structure is respectively connected to the correction pressing plate 200 and the base 100 to fix the correction pressing plate 200 relative to the base 100. Or, it can also be that the connection structure is connected to the base 100, and the correction pressing plate 200 is located between the connection structure and the base 100. When the circuit board assembly 20 is placed on the support surface, the correction pressing plate 200 can be clamped between the connection structure and the circuit board assembly 20, so that the correction pressing plate 200 is fixed relative to the base 100.

[0037] In the embodiment of the present application, the limiting protrusion 220 is used to contact any plug-in 22 in the circuit board assembly 20. Optionally, the number of the limiting protrusions 220 can be two or more. For ease of description, in the following, the case where the number of the limiting protrusions 220 is two will be taken as an example for illustration. The two limiting protrusions 220 can both contact one of the plug-ins 22 in the circuit board assembly 20, or the two limiting protrusions 220 can also contact different plug-ins 22 respectively. When the correction pressing plate 200 is fixed relative to the base 100 through the connection structure, by contacting any plug-in 22 in the circuit board assembly 20 through the limiting protrusion 220, under the limiting action of the limiting protrusion 220, the circuit board assembly 20 can be stably clamped between the limiting protrusion 220 and the base 100. Optionally, as Figures 3 to 5 shown, the two limiting protrusions 220 specifically contact the core plug-in in the circuit board assembly 20. It should be noted that the core plug-in refers to the plug-in 22 that can affect the quality of the circuit board assembly 20 passing through the furnace. Generally, the core plug-in is the plug-in 22 with a larger volume among the multiple plug-ins of the circuit board assembly 20, and the area of the side of the core plug-in facing the limiting protrusion 220 is larger. Therefore, the contact area between the core plug-in and the limiting protrusion 220 is larger, which is beneficial to improving the limiting effect on the circuit board assembly 20.

[0038] The furnace passing fixture provided by the embodiment of the present application is provided with the base 100 and the correction pressing plate 200. By providing a plurality of jacks 210 on the correction pressing plate 200, and the plurality of jacks 210 are arranged in one-to-one correspondence with the plurality of plug-ins 22 in the circuit board assembly 20, so that the welding parts 23 of the respective plug-ins 22 can be inserted into the corresponding jacks 210. Since the positions of the plurality of jacks 210 on the correction pressing plate 200 are fixed, the respective welding parts 23 can be limited by the respective jacks 210 of the correction pressing plate 200. After the correction pressing plate 200 is fixed relative to the base 100 through the connection structure, by contacting any plug-in 22 through the limiting protrusion 220, the circuit board assembly 20 is clamped between the limiting protrusion 220 and the base 100, and the relative positions of the respective plug-ins 22 are fixed, thereby forming a good positioning effect on the respective plug-ins 22, improving the positioning accuracy of the respective plug-ins 22, enabling the geometric tolerances such as the height linear dimension and the perpendicular flatness of the respective plug-ins 22 to meet the requirements of the stacking combination mode, and effectively reducing the product defect rate.

[0039] In some embodiments, the base 100 can be a plate-like structure, a block-like structure or other irregular-shaped structures. Optionally, as Figure 1 or Figure 2 shown, the base 100 is a plate-like structure, so that the circuit board 21 can better contact the base 100, thereby improving the limiting effect of the base 100 on the circuit board assembly 20. For ease of description, in the following, the case where the base 100 is a plate-like structure will be taken as an example for illustration.

[0040] In some embodiments, as Figure 2 shown, a card slot 150 is provided on the support surface. The shape of the slot body of the card slot 150 matches the shape of the circuit board 21 in the circuit board assembly 20. The circuit board 21 is specifically placed in the card slot 150 on the support surface, and the side wall of the card slot 150 plays a limiting role on the circuit board 21 to improve the positioning accuracy between each plug-in 22 and the circuit board 21 in the circuit board assembly 20.

[0041] In a possible design, as Figure 4 and Figure 5 shown, the connection structure includes an upper cover pressing plate 300 and a connecting portion that are connected to each other. The upper cover pressing plate 300 is located on the side of the correction pressing plate 200 away from the base 100 to press and fix the correction pressing plate 200 and the circuit board assembly 20 on the support surface of the base 100. The connecting portion is detachably connected to the base 100. The upper cover pressing plate 300 is in direct or indirect contact with the correction pressing plate 200. In one example, the upper cover pressing plate 300 is in direct contact with the correction pressing plate 200. Specifically, the side surface of the upper cover pressing plate 300 facing the correction pressing plate 200 is in contact with the side surface of the correction pressing plate 200 facing the upper cover pressing plate 300. In another example, the upper cover pressing plate 300 is in indirect contact with the correction pressing plate 200. Specifically, an abutting structure is connected to the side of the upper cover pressing plate 300 facing the correction pressing plate 200, and the upper cover pressing plate 300 abuts against the side of the correction pressing plate 200 away from the base 100 through the abutting structure. Optionally, the abutting structure can be a pressing rod, a pressing plate, a pressing block, etc.

[0042] According to the above embodiments, by providing the upper cover pressing plate 300, the correction pressing plate 200 can be clamped between the upper cover pressing plate 300 and the circuit board assembly 20. The upper cover pressing plate 300 plays a limiting role on the correction pressing plate 200 to adjust the parallelism between the correction pressing plate 200 and the support surface of the base 100, which is beneficial to improving the positioning accuracy of the correction pressing plate 200 for each plug-in 22. Optionally, the connecting portion and the base 100 can be detachably connected by any means such as clamping, plugging, or screwing.

[0043] Optionally, the area of the side surface of the upper cover pressing plate 300 facing the correction pressing plate 200 is greater than or equal to the area of the side surface of the correction pressing plate 200 facing the upper cover pressing plate 300. In this way, the side surface of the upper cover pressing plate 300 facing the correction pressing plate 200 can be completely attached to the side surface of the correction pressing plate 200 facing the upper cover pressing plate 300, so that the contact area between the upper cover pressing plate 300 and the correction pressing plate 200 is large, and the positioning effect of the upper cover pressing plate 300 on the correction pressing plate 200 is improved.

[0044] In a possible design, in the depth direction of the jack 210, the depth of the jack 210 is greater than or equal to the length of the welding portion 23 of the corresponding plug-in 22. It can be understood that the depth direction of the jack 210 is the opening direction of the jack 210. For example, if the correction pressing plate 200 is provided with a jack 210 in the vertical direction, the depth direction of the jack 210 is the vertical direction, and the depth of the jack 210 in the vertical direction is greater than or equal to the length of the welding portion 23 in the vertical direction. In the embodiment of the present application, the correction pressing plate 200 is specifically provided with a jack 210 in the first direction, and the first direction is the direction in which the correction pressing plate 200 is spaced apart from the base 100. Optionally, each jack 210 may penetrate the correction pressing plate 200 or may not penetrate the correction pressing plate 200. Optionally, the first direction may be the vertical direction, the horizontal direction, or any other arbitrary direction, which is not uniquely limited herein. According to the above embodiment, it is possible to prevent the welding portion 23 from extending out of the correction pressing plate 200 to the side facing the upper cover pressing plate 300 through the jack 210, so that the correction pressing plate 200 can better fit with the upper cover pressing plate 300, thereby improving the positioning effect of the upper cover pressing plate 300 on the correction pressing plate 200, and further improving the positioning effect of the correction pressing plate 200 on each plug-in 22.

[0045] In a possible design, the upper cover pressing plate 300 or the correction pressing plate 200 is provided with a leveling structure. The side of the leveling structure facing the base 100 has a first plane 311, and the side of the base 100 facing the correction pressing plate 200 is provided with a second plane 111, and the first plane 311 is in contact with the second plane 111. In this setting method, by making the first plane 311 in contact with the second plane 111, it is convenient to quickly limit the position between the correction pressing plate 200 and the base 100, so as to quickly position the correction pressing plate 200, and thus quickly position each plug-in 22. In some examples, the first plane 311 is parallel to the side of the correction pressing plate 200 facing the base 100, and the second plane 111 is parallel to the supporting surface. In this way, when the first plane 311 and the second plane 111 are in contact, the correction pressing plate 200 can be made parallel to the supporting surface, thereby quickly positioning each plug-in 22.

[0046] In some embodiments, the side of the base 100 facing the correction pressing plate 200 is provided with a first positioning protrusion, which is also the leveling structure. The side of the first positioning protrusion facing the correction pressing plate 200 is the first plane 311; the side of the correction pressing plate 200 or the upper cover pressing plate 300 facing the base 100 is provided with a second positioning protrusion, and the side of the second positioning protrusion facing the base 100 is the second plane 111. The first positioning protrusion and the second positioning protrusion are arranged opposite to each other, so that when the upper cover pressing plate 300 is installed on the base 100, the first plane 311 is in contact with the second plane 111.

[0047] In a possible design, as Figure 2 shown, the leveling structure includes a guiding column 310. One side of the guiding column 310 facing the base 100 is a first plane 311; a mating portion 110 is provided on the supporting surface. One side of the mating portion 110 facing the correcting pressing plate 200 is a second plane 111; an insertion portion 312 is protrudingly provided on one of the first plane 311 and the second plane 111, and a guiding hole 112 is formed in the other one. The insertion portion 312 is inserted into the guiding hole 112. By respectively providing the insertion portion 312 and the guiding hole 112 on the first plane 311 and the second plane 111, during the assembly process, by inserting the insertion portion 312 into the guiding hole 112 until the first plane 311 contacts the second plane 111. In this way, it not only positions the upper cover pressing plate 300 or the correcting pressing plate 200 provided with the guiding column 310, but also plays a guiding role during the assembly process, making the assembly process simpler and the assembly efficiency higher. In one example, the guiding column 310 is specifically provided on the side of the upper cover pressing plate 300 facing the base 100, the insertion portion 312 is specifically provided on the first plane 311, and the guiding hole 112 is specifically provided on the second plane 111. For the convenience of description, hereinafter, the example in which the insertion portion 312 is provided on the first plane 311 and the guiding hole 112 is provided on the second plane 111 will be used for illustration.

[0048] Optionally, the guiding column 310 is provided on the upper cover pressing plate 300. The connecting portion includes one of a clamping groove and a clamping protrusion, and the connecting portion is provided on the insertion portion 312, and the other one is provided on the inner wall of the guiding hole 112. In one example, the connecting portion includes a clamping protrusion. The clamping protrusion is provided around the outer peripheral surface of the insertion portion 312, and an annular clamping groove is formed on the inner wall of the guiding hole 112. The shape of the clamping groove matches that of the clamping protrusion. When the insertion portion 312 is inserted into the guiding hole 112, the clamping protrusion is clamped into the clamping groove to detachably connect the upper cover pressing plate 300 and the base 100.

[0049] In a possible design, the numbers of the guiding column 310 and the mating portion 110 are both multiple. The multiple mating portions 110 are spaced apart on the supporting surface, and the multiple guiding columns 310 are provided in one-to-one correspondence with the multiple mating portions 110. Each insertion portion 312 is inserted into the corresponding guiding hole 112. With such a setting, the total contact area between the first plane 311 and the second plane 111 is increased, thereby improving the positioning effect on the upper cover pressing plate 300 or the correcting pressing plate 200.

[0050] In some embodiments, as Figure 2As shown in the figure, the upper cover pressing plate 300 and the base 100 are both rectangular plate-like structures. On one side of the upper cover pressing plate 300 facing the base 100, there are four guiding columns 310. On one side of the base 100 facing the upper cover pressing plate 300, there are four mating parts 110. The four guiding columns 310 and the four mating parts 110 are arranged in one-to-one correspondence. The insertion parts 312 on each guiding column 310 are inserted into the guiding holes 112 on the corresponding mating parts 110. The four guiding columns 310 are respectively distributed in the four corner areas on one side of the upper cover pressing plate 300 facing the base 100, and the four mating parts 110 are respectively distributed in the four corner areas on one side of the base 100 facing the upper cover pressing plate 300.

[0051] In a possible design, as Figure 6 shown in the figure, the connecting part includes a plurality of first clamping parts 320. The plurality of first clamping parts 320 are arranged at intervals on the upper cover pressing plate 300. There are a plurality of second clamping parts 140 arranged on the base 100. The plurality of first clamping parts 320 and the plurality of second clamping parts 140 are arranged in one-to-one correspondence. Each first clamping part 320 is clamped with the corresponding second clamping part 140. By providing the first clamping parts 320 and the second clamping parts 140, and clamping through the first clamping parts 320 and the second clamping parts 140, the base 100 and the upper cover pressing plate 300 are connected by a clamping method. In this way, it is convenient to quickly disassemble and assemble the upper cover pressing plate 300 and the base 100.

[0052] Optionally, one of the first clamping part 320 and the second clamping part 140 is a snap structure, and the other is a slot structure. As Figure 6 shown in the figure, the first clamping part 320 is a snap structure, and the second clamping part 140 is a slot structure. Optionally, the number of both the first clamping parts 320 and the second clamping parts 140 is two. The two first clamping parts 320 are arranged at intervals along the second direction on the side of the upper cover pressing plate 300 facing the base 100, and the two second clamping parts 140 are arranged at intervals along the second direction on the side of the base 100 facing the upper cover pressing plate 300. The second direction is arranged at an angle with the first direction. Optionally, the first direction is perpendicular to the second direction.

[0053] In a possible design, the limiting protrusion 220 includes a flexible part, and the flexible part is used to contact the plug-in 22. Optionally, the limiting protrusion 220 may only include the flexible part, that is, the flexible part is the entire limiting protrusion 220; or, the limiting protrusion 220 may also include a main body part and a flexible part. The main body part is connected to the correction pressing plate 200, and the flexible part is connected to the side of the main body part facing the base 100. By contacting the plug-in 22 through the flexible part, the friction or impact force received by the plug-in 22 can be effectively reduced, which is beneficial to protecting the plug-in 22. Optionally, the flexible part can be made of flexible materials such as plastic, rubber or silicone.

[0054] In a possible design, asFigure 6 As shown, an installation groove 120 is provided on the support surface, and the installation groove 120 is used to accommodate the circuit board assembly 20. In this setting method, by setting the installation groove 120, on the one hand, it can protect the circuit board 21 in the circuit board assembly 20, and on the other hand, the circuit board 21 can be limited by the installation groove 120, further improving the positioning effect between each plug-in 22 and the circuit board 21 in the furnace passing fixture. In this embodiment, the card slot 150 is specifically provided on the bottom wall of the installation groove 120.

[0055] Normally, in the circuit board assembly 20, a plurality of welding holes are provided on the circuit board 21, and the plurality of welding holes are arranged in one-to-one correspondence with the plurality of plug-ins 22, and each plug-in 22 is inserted into the corresponding welding hole. And, in some cases, one end of some plug-ins 22 will pass through the welding hole and extend to the side of the circuit board 21 facing the base 100. In a possible design, as Figure 2 or Figure 3 shown, at least one avoidance hole 130 is provided on the support surface, and the avoidance hole 130 is used to avoid the plug-in 22. Specifically, the avoidance hole 130 is provided on the bottom wall of the card slot 150 on the support surface. In this setting method, the avoidance hole 130 is mainly used to avoid one end of the plug-in 22 extending to the side of the circuit board 21 facing the base 100 through the welding hole. Optionally, when there is one avoidance hole 130, but one ends of a plurality of plug-ins 22 all extend to the side of the circuit board 21 facing the base 100 through the corresponding welding holes, the inner diameter of the avoidance hole 130 can be set to a larger inner diameter, and one ends of the plurality of plug-ins 22 can all be inserted into the same avoidance hole 130 through the corresponding welding holes. When there are a plurality of avoidance holes 130, and one ends of a plurality of plug-ins 22 all extend to the side of the circuit board 21 facing the base 100 through the corresponding welding holes, one ends of the plurality of plug-ins 22 can all be inserted into different avoidance holes 130 through the corresponding welding holes. By setting the avoidance hole 130, the circuit board 21 can be better attached to the base 100 to improve the positioning accuracy between each plug-in 22 and the circuit board 21. Optionally, the avoidance hole 130 can penetrate the base 100 or can not penetrate the base 100, and this is not uniquely limited here.

[0056] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A furnace passing fixture, characterized in that, It includes a base, a correction pressing plate and a connection structure. A supporting surface is formed on the base, and the supporting surface is used to support the circuit board assembly. The connection structure is detachably connected to the base, and the connection structure is used to fix the correction pressing plate on the side of the circuit board assembly away from the base; The correction pressing plate is provided with a plurality of jacks, and the plurality of jacks are arranged in one-to-one correspondence with a plurality of plug-ins in the circuit board assembly. Each jack is used to insert the welding part of the corresponding plug-in; at least two limiting protrusions are arranged at intervals on the side of the correction pressing plate facing the base, and the limiting protrusions are used to contact the plug-in.

2. The furnace passing fixture according to claim 1, wherein The connection structure includes an upper cover pressing plate and a connection part connected to each other. The upper cover pressing plate is located on the side of the correction pressing plate away from the base to press and fix the correction pressing plate and the circuit board assembly on the supporting surface of the base, and the connection part is detachably connected to the base.

3. The furnace passing fixture according to claim 2, wherein, The upper cover pressing plate or the correction pressing plate is provided with a leveling structure. The side of the leveling structure facing the base has a first plane, and the side of the base facing the correction pressing plate is provided with a second plane, and the first plane fits with the second plane.

4. The oven passing fixture according to claim 3, characterized in that, The leveling structure includes a guide post. The side surface of the guide post facing the base is the first plane; a matching part is arranged on the supporting surface, and the side of the matching part facing the correction pressing plate is the second plane; an insertion part is convexly arranged on one of the first plane and the second plane, and a guide hole is opened on the other, and the insertion part is inserted into the guide hole.

5. The oven passing fixture according to claim 4, wherein, The number of the guide posts and the matching parts is multiple. The multiple matching parts are arranged at intervals on the supporting surface, and the multiple guide posts are arranged in one-to-one correspondence with the multiple matching parts. Each insertion part is inserted into the corresponding guide hole.

6. The furnace passing fixture according to any one of claims 2 to 5, characterized in that, The connection part includes a plurality of first clamping parts. The plurality of first clamping parts are arranged at intervals on the upper cover pressing plate. A plurality of second clamping parts are arranged on the base. The plurality of first clamping parts and the plurality of second clamping parts are arranged in one-to-one correspondence, and each first clamping part is clamped with the corresponding second clamping part.

7. The furnace passing fixture according to any one of claims 1 to 5, characterized in that The limiting protrusion includes a flexible part, and the flexible part is used to contact the plug-in.

8. The furnace passing fixture according to any one of claims 1 to 5, characterized in that, An installation groove is arranged on the supporting surface, and the installation groove is used to accommodate the circuit board assembly.

9. The furnace passing fixture according to any one of claims 1 to 5, characterized in that, At least one avoidance hole is arranged on the supporting surface, and the avoidance hole is used to avoid the plug-in.

10. The furnace passing fixture according to any one of claims 1 to 5, characterized in that In the depth direction of the jack, the depth of the jack is greater than or equal to the length of the welding part of the corresponding plug-in.

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