Wave-soldering furnace-passing jig

Abstract

The utility model discloses a wave soldering furnace jig for fixing a circuit board, which comprises a bottom plate, at least one mounting groove for mounting the circuit board is arranged on the bottom plate, and element pin via holes are arranged at the bottom of the mounting groove; the mounting groove is formed in the bottom plate, the at least two first fixing assemblies are arranged on the peripheral area of the mounting groove, one end of each first fixing assembly is rotationally connected with the bottom plate, and the other end of each first fixing assembly is used for abutting against a circuit board mounted in the mounting groove when the circuit board is mounted in the mounting groove of the bottom plate. According to the technical scheme, the circuit board is limited in the horizontal direction and the vertical direction through the mounting groove and the first fixing assembly, welding flux can only pass through the element pin via holes in wave soldering, the surface-mounted component cannot be pulled, and the surface-mounted component is prevented from falling off in the wave soldering process.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a wave soldering furnace fixture. Background Art

[0002] Surface mount components (SMDs) and through-hole components (THCs) are typically soldered onto PCBAs. Wave soldering is a method used to solder through-hole components (THCs). During the wave soldering process, the PCB passes through a wave of molten solder. The high temperature and fluidity of the solder exert impact and gravitational forces on the components on the board. Since surface mount components (SMDs) are secured solely by viscous solder paste, they can easily become dislodged due to the pull of the solder or slight movement of the PCB under the influence of high temperatures and the solder wave. Without proper protection, they can also become damaged due to overheating, impacting circuit performance and reliability. Therefore, these SMD components must be protected to ensure they remain in place during the wave soldering process and avoid soldering defects. Utility Model Content

[0003] The main purpose of the utility model is to provide a wave soldering furnace fixture, which is intended to protect surface mounted components on a circuit board during the wave soldering process.

[0004] To achieve the above-mentioned purpose, the wave soldering fixture proposed by the present invention is used to fix the circuit board, and includes:

[0005] A base plate, wherein the base plate is provided with at least one mounting groove for mounting a circuit board, and a component pin through hole is provided at the bottom of the mounting groove;

[0006] At least two groups of first fixing components are arranged in the area around the mounting groove, one end of the first fixing component is rotatably connected to the base plate, and the other end of the first fixing component is used to abut against the circuit board installed in the mounting groove when a circuit board is installed in the mounting groove of the base plate.

[0007] In one embodiment, the first fixing assembly includes:

[0008] a first fastener, the first fastener being arranged on the bottom plate, and a first limiting portion being provided at one end of the first fastener away from the bottom plate;

[0009] a first limiting member, one end of which is disposed between the first limiting portion and the base plate and rotatably connected to the main body of the first fastener, and the other end of which is configured to abut against a circuit board mounted in the mounting slot when a circuit board is mounted in the mounting slot of the base plate;

[0010] An elastic member, one end of the elastic member abuts against the first limiting portion, and the other end of the elastic member abuts against the first limiting member.

[0011] In one embodiment, the first limiting member includes:

[0012] a positioning post, the positioning post being used to abut against the circuit board installed in the mounting groove when the circuit board is installed in the mounting groove of the bottom plate;

[0013] a rotary arm, one end of which is connected to the positioning post, and the other end of which is provided with a through hole;

[0014] The first fastener passes through the through hole, one end of the elastic member abuts against the first limiting portion, and the other end of the elastic member abuts against the rotary arm.

[0015] In one embodiment, at least one set of second fixing components is further included, one end of the second fixing component is rotatably connected to the base plate, and the other end of the second fixing component is used to abut against the components on the circuit board installed in the mounting groove when a circuit board is installed in the mounting groove of the base plate.

[0016] In one embodiment, a frame is provided on the edge of the bottom plate, and the second fixing component includes:

[0017] a second fastener, the second fastener being disposed on the frame;

[0018] a second limiting member, wherein the second limiting member is sleeved on the second fastening member;

[0019] A third limiting member, one end of which is disposed between the second limiting member and the base plate and is rotatably connected to the second fastener, and the other end of which is used to abut against the circuit board.

[0020] In one embodiment, the third limiting member includes:

[0021] a mounting portion, the mounting portion being rotatably connected to the second fastener, the mounting portion being provided with a mounting hole, the second fastener passing through the mounting hole;

[0022] an abutting portion, the abutting portion being used to abut against a component on the circuit board mounted in the mounting groove when the circuit board is mounted in the mounting groove of the bottom plate;

[0023] The bending portion has two ends connected to the mounting portion and the abutting portion respectively.

[0024] In one embodiment, the second fastener is a bolt, and the bolt is protruded on the frame;

[0025] The second limiting member is a nut, and the nut is sleeved on the bolt.

[0026] In one embodiment, the bottom plate is made of a heat-insulating material.

[0027] The technical solution of the present utility model adopts at least one mounting slot for mounting a circuit board on a base plate, the bottom of the mounting slot being provided with component pin holes, and at least two groups of first fixing components being arranged around the mounting slot, the two groups of first fixing components being arranged in the area surrounding the mounting slot, one end of the first fixing component being rotatably connected to the base plate, and the other end of the first fixing component being used to abut against the circuit board mounted in the mounting slot when the circuit board is mounted in the mounting slot of the base plate. When the circuit board is mounted in the mounting slot, the two groups of first fixing components are rotated so that the other ends of the two groups of first fixing components abut against the circuit board. The mounting slot and the first fixing components limit the circuit board in the horizontal and vertical directions, so that during wave soldering, solder can only pass through the component pin holes and cannot pull on surface mount components, thereby preventing surface mount components from falling off during the wave soldering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 This is a structural diagram of an embodiment of a wave soldering fixture provided by the present invention;

[0030] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle.

[0031] Description of Figure Numbers:

[0032] 100, circuit board; 200, bottom plate; 210, mounting slot; 211, component pin through-hole; 220, frame; 300, first fixing component; 310, first fastener; 311, first limiting portion; 320, first limiting member; 321, positioning column; 322, swing arm; 330, elastic member; 400, second fixing component; 410, second fastener; 420, second limiting member; 430, third limiting member; 431, mounting portion; 432, bending portion; 433, abutting portion; 5, protective pad.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The utility model provides a wave soldering furnace fixture.

[0038] See also Figure 1 In one embodiment of the present invention, the wave soldering fixture is used to fix the circuit board 100, including: a base plate 200 and at least two groups of first fixing components 300.

[0039] The base plate 200 is provided with at least one mounting slot 210 for mounting a circuit board 100, which is used to support the circuit board 100 to be processed. Component pin holes 211 are provided at the bottom of the mounting slot 210. During use, when the circuit board 100 is placed on the mounting slot 210, the pins of the through-hole components correspond to the component pin holes 211. During the wave soldering process, solder passes through the component pin holes 211, soaking the pins of the through-hole components, thereby soldering the through-hole components to the circuit board 100. It will be understood that in some embodiments of the present application, the base plate 200 may be provided with multiple mounting slots 210, so that multiple circuit boards 100 can be fixed at one time.

[0040] Two groups of the first fixing components 300 are arranged in the area around the mounting groove 210, one end of the first fixing component 300 is rotatably connected to the base plate 200, and the other end of the first fixing component 300 is used to abut against the circuit board 100 installed in the mounting groove 210 when the circuit board 100 is installed in the mounting groove 210 of the base plate 200.

[0041] The technical solution of the present invention is to adopt at least one mounting groove 210 for mounting the circuit board 100 on the base plate 200, and the bottom of the mounting groove 210 is provided with a component pin through-hole 211, and at least two groups of first fixing components 300 are arranged around the mounting groove 210. The two groups of first fixing components 300 are arranged in the area around the mounting groove 210, and one end of the first fixing component 300 is rotatably connected to the base plate 200, and the other end of the first fixing component 300 is used to abut against the circuit board 100 installed in the mounting groove 210 when the circuit board 100 is installed in the mounting groove 210 of the base plate 200. When the circuit board 100 is installed in the mounting groove 210, the two groups of the first fixing components 300 are rotated so that the other ends of the two groups of the first fixing components 300 abut against the circuit board 100. The mounting groove 210 and the first fixing components 300 limit the circuit board 100 in the horizontal and vertical directions. During wave soldering, the solder can only pass through the component pin vias 211 and cannot pull the surface mount components, thereby preventing the surface mount components from falling off during the wave soldering process.

[0042] It can be understood that in some embodiments of the present application, four groups can be set corresponding to each installation slot 210, and each group of the first fixing components 300 is arranged at the four corners of the installation slot 210 to limit the circuit board 100 from four areas, so that the circuit board 100 is subjected to more uniform force.

[0043] See also Figure 1 and Figure 2In one embodiment, the first fixing assembly 300 includes a first fastener 310, a first stopper 320, and an elastic member 330. The first fastener 310 is disposed on the base plate 200, and a first stopper 311 is provided at one end of the first fastener 310 away from the base plate 200. One end of the first stopper 320 is disposed between the first stopper and the base plate 200 and is rotatably connected to the main body of the first fastener 310. The other end of the first stopper 320 is configured to abut against the circuit board 100 installed in the mounting slot 210 of the base plate 200 when the circuit board 100 is installed in the mounting slot 210. One end of the elastic member 330 abuts against the first stopper 311, and the other end of the elastic member 330 abuts against the first stopper 320.

[0044] In this embodiment, one end of the first limiting member 320 is disposed between the first limiting portion 311 and the bottom plate 200. One end of the elastic member 330 abuts the first limiting portion 311, and the other end of the elastic member 330 abuts the first limiting member 320. The elastic member 330 can apply an elastic force to the first limiting member 320. When the circuit board 100 is installed in the installation slot 210, one end of the first limiting member 320 abuts the circuit board 100, thereby limiting the first circuit board 100 in the vertical direction.

[0045] The first limiting portion 311 can limit one end of the first limiting member 320 to prevent the first limiting member 320 from falling off the first fastening member 310. During use, the first limiting member 320 is rotated so that one end of the limiting member rotates around the first fastening member 310 until one end of the first limiting member 320 abuts against the circuit board 100, thereby securing the circuit board 100.

[0046] See also Figure 1 and Figure 2 In one embodiment, specifically, the first limiting member 320 includes a positioning post 321 and a swing arm 322. When a circuit board 100 is installed in the mounting slot 210 of the base plate 200, the first limiting member 320 is configured to abut against the circuit board 100 installed in the mounting slot 210. One end of the swing arm 322 is connected to the positioning post 321, and the other end of the swing arm 322 is provided with a through hole, through which the first fastener 310 passes. The elastic member 330 is a spring, which is sleeved on the first fastener 310. One end of the spring abuts against the first limiting portion 311, and the other end of the elastic member 330 abuts against the swing arm 322.

[0047] In the present application, the first fastener 310 may be a hexagonal bolt. During assembly, the hexagonal bolt is passed through the through hole and threadedly connected to the mounting hole on the base plate 200 .

[0048] See also Figures 1 to 2 , because plug-in components are prone to floating and tilting during the wave soldering process, such as terminals, low-capacity plug-in components, etc. In one embodiment, the present application further includes at least one set of second fixing components 400, one end of which is rotatably connected to the base plate 200, and the other end of the second fixing component 400 is used to abut against plug-in components that are prone to floating and tilting on the circuit board 100 installed in the mounting groove 210 when a circuit board 100 is installed in the mounting groove 210 of the base plate 200. In this embodiment, when the other end of the second fixing component 400 abuts against plug-in components that are prone to floating and tilting on the circuit board 100 installed in the mounting groove 210, the plug-in components can be fixed in the vertical direction to prevent the plug-in components from floating and tilting.

[0049] See also Figure 1 In one embodiment, a frame 220 is provided on the edge of the bottom plate 200, and the second fixing assembly 400 includes a second fastener 410, a second stopper 420, and a third stopper 430. The second fastener 410 is provided on the frame 220, and the second stopper 420 is sleeved on the second fastener 410. One end of the third stopper 430 is rotatably connected to the second fastener 410 and is located between the second stopper 420 and the bottom plate 200. The other end of the third stopper 430 is configured to abut against the circuit board 100.

[0050] In this embodiment, since a frame 220 is provided on the edge of the base plate 200, one end of the second limiting member 420 is set on the frame 220 through the second fastener 410, and the frame 220 lifts one end of the second limiting member 420. The second limiting member 420 and the base plate 200 are arranged at an angle, so that when the second limiting member 420 is rotated, interference between the second limiting member 420 and the first fastener 310 can be avoided.

[0051] See also Figure 1In one embodiment, the third position-limiting member 430 includes a mounting portion 431, a bent portion 432, and an abutting portion, which are sequentially connected. The mounting portion 431 is rotatably connected to the second fastener 410. The mounting portion 431 is provided with a mounting hole, through which the second fastener 410 passes. The abutting portion is configured to abut against the circuit board 100. In this embodiment, the provision of the bent portion 432 further prevents interference between the second position-limiting member 420 and the first fastener 310 during rotation.

[0052] See also Figure 1 In one embodiment, specifically, the second fastener 410 is a bolt, the bolt is protruded on the frame 220, and the second limiting member 420 is a nut, and the nut is sleeved on the bolt.

[0053] See also Figure 1 Since the circuit board 100 is prone to high-temperature deformation during the wave soldering process, in order to prevent the circuit board 100 from being easily deformed by high temperature, in one embodiment, the base plate 200 is made of heat-insulating materials such as glass fiber board and synthetic stone.

[0054] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A wave soldering fixture for fixing a circuit board, characterized in that: include: A base plate, wherein the base plate is provided with at least one mounting groove for mounting a circuit board, and a component pin through hole is provided at the bottom of the mounting groove; At least two groups of first fixing components are arranged in the area around the mounting groove, one end of the first fixing component is rotatably connected to the base plate, and the other end of the first fixing component is used to abut against the circuit board installed in the mounting groove when a circuit board is installed in the mounting groove of the base plate.

2. The wave soldering fixture according to claim 1, wherein: The first fixing assembly includes: a first fastener, the first fastener being arranged on the bottom plate, and a first limiting portion being provided at one end of the first fastener away from the bottom plate; a first limiting member, one end of which is disposed between the first limiting portion and the base plate and rotatably connected to the main body of the first fastener, and the other end of which is configured to abut against a circuit board mounted in the mounting slot when a circuit board is mounted in the mounting slot of the base plate; An elastic member, one end of the elastic member abuts against the first limiting portion, and the other end of the elastic member abuts against the first limiting member.

3. The wave soldering fixture according to claim 2, characterized in that: The first limiting member includes: a positioning post, the positioning post being used to abut against the circuit board installed in the mounting groove when the circuit board is installed in the mounting groove of the bottom plate; a rotary arm, one end of which is connected to the positioning post, and the other end of which is provided with a through hole; The first fastener passes through the through hole, one end of the elastic member abuts against the first limiting portion, and the other end of the elastic member abuts against the rotary arm.

4. The wave soldering fixture according to any one of claims 1 to 3, characterized in that: It also includes at least one set of second fixing components, one end of which is rotatably connected to the base plate, and the other end of the second fixing component is used to abut against the components on the circuit board installed in the mounting groove when a circuit board is installed in the mounting groove of the base plate.

5. The wave soldering fixture according to claim 4, characterized in that: A frame is provided on the edge of the bottom plate, and the second fixing component includes: a second fastener, the second fastener being disposed on the frame; a second limiting member, wherein the second limiting member is sleeved on the second fastening member; A third limiting member, one end of which is disposed between the second limiting member and the base plate and is rotatably connected to the second fastener, and the other end of which is used to abut against the circuit board.

6. The wave soldering fixture according to claim 5, characterized in that: The third limiting member includes: a mounting portion, the mounting portion being rotatably connected to the second fastener, the mounting portion being provided with a mounting hole, the second fastener passing through the mounting hole; an abutting portion, the abutting portion being used to abut against a component on the circuit board mounted in the mounting groove when the circuit board is mounted in the mounting groove of the bottom plate; The bending portion has two ends connected to the mounting portion and the abutting portion respectively.

7. The wave soldering fixture according to claim 5, characterized in that: The second fastener is a bolt, and the bolt is protruded on the frame; The second limiting member is a nut, and the nut is sleeved on the bolt.

8. The wave soldering fixture according to claim 1, wherein: The bottom plate is made of heat-insulating material.

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