CN201369894Y

CN201369894Y - PCB clamp

Info

Publication number: CN201369894Y
Application number: CNU2009201445295U
Authority: CN
Inventors: 王海浪
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-27
Filing date: 2009-02-27
Publication date: 2009-12-23
Anticipated expiration: 2019-02-27

Abstract

The utility model relates to a PCB clamp, which comprises a clamp mould consisting of an upper plate and a lower plate. A groove for placing a PCB is formed between the upper plate and the lower plate, a guide groove with two ends respectively arranged on the upper plate and the lower plate is arranged on the clamp mould along the longitudinal direction of the PCB, and a positioning paper clip is inserted in the groove. The positioning paper clip comprises a positioning plate and a special-shaped spring, wherein the positioning plate is provided with a slide block and a spring mounting groove and can slide along the guide groove, the lower end surface of the upper plate is equipped with a strip-shaped groove which is intersected with one end of the guide groove, a through hole is arranged at the intersected joint, the special-shaped spring arranged in the spring mounting groove is a hook-shaped part formed by bending one end of a straight-line-shaped metal wire, a hook-shaped portion is abutted against the inner wall of one side of the spring mounting groove, a rod-shaped portion clings to the inner wall of the strip-shaped groove and the inner wall of the other side of the spring mounting groove, and one end of the positioning plate is equipped with a positioning projection capable of being engaged with the positioning hole of the PCB. The PCB clamp is simple and stable in structure and long in service life, can effectively increase mounting and dismounting operation efficiency and product yield of PCBs and reduces production cost.

Description

The pcb board anchor clamps

Technical field

The utility model relates to a kind of being used for and when high-temperature operation PCB is carried out fastening location, in order to avoid cause the PCB damage or break away from the pcb board anchor clamps of PCB anchor clamps.

Background technology

PCB is for a kind of electronic component element that electronic component prints lead and configuration space is installed.PCB at present commonly used is generally two multilager base plates with the upper strata.When installing, welding entity portion product at these PCB surface elements with equipment such as reflow stoves, processing temperature is very high, cause the PCB that plug-in unit is housed very easily be out of shape, crooked or break away from the PCB anchor clamps, and then the failure welding rate is raise, and the reduction production capacity, the while has also reduced the useful life of PCB anchor clamps.

For overcoming such problem, people are developed and multiple PCB anchor clamps, are ZL200720040777, the day for announcing to be that on 07 17th, 2007 utility model patent has promptly proposed a kind of typical PCB anchor clamps as the patent No., and its structure is shown in Fig. 1～2.The PCB20 that this PCB includes fixture template 10 and is mounted with clamp assembly, fixture template is provided with location paper clip 30, PCB is provided with the hole, the location paper clip is fixed in this hole, and on fixture template, is provided with guide groove 13 in order to the installing and locating paper clip along the length direction of PCB, one end of this guide groove is arranged on the upper side 11, the other end is arranged on the bottom surfaces 12, and the end that guide groove is positioned at upper side is provided with pocket for the punch head 14, and the outside of pocket for the punch head is provided with location hole 15a.Location paper clip (30) is by the auxilliary material 31 of slide block, spring 32, alignment pin 33 is formed, the auxilliary material 31 of slide block is inserted in the guide groove 13 on the fixture template 10 and can slides along this guide groove 13, spring 32 is placed on an end of the auxilliary material 31 of slide block, 33 tops that are placed on spring 32 of alignment pin, two positioning convex 33a of alignment pin 33 insert location hole 15a respectively, has the protruding 31a of hook on the auxilliary material 31 of slide block, slide block is auxilliary, and (31 are inserted in the guide groove 13 on the one hand, linking up with protruding 31a simultaneously is inserted in the hole 22 on the PCB20, also be provided with hole 21 on the last corresponding corner face of PCB20, the relevant position of PCB20 is installed on the fixture template 10, be provided with and become narrow and small protruding 12a from top to bottom, it inserts corresponding hole 21 respectively and locatees PCB.This PCB can play with clamp assembly is convenient to install pcb board, and can carry out repeatedly under the situation of dismounting operation, prevents that fixedly the location paper clip of pcb board breaks away from or damaged effect.But this PCB has following defective with clamp assembly: at first, the structure of location paper clip is comparatively complicated in this clamp assembly, and production cost is higher; Secondly, locate the alignment pin 33 that adopts in the paper clip and be the relation of pegging graft with fixture template, bonding strength is relatively poor, and is easily loosening after repeatedly plugging, and then shortens the useful life of anchor clamps; In addition, adopted peacock spring 32 in the paper clip of location, when it was held between alignment pin 33 and the fixture template 10, the two wings resultant moment of stressed generation together can make spring coil upspring, and caused spring coil and alignment pin 33 to come off simultaneously.

The utility model content

The purpose of this utility model is to propose a kind of simple in structure firm, with low cost, and the pcb board anchor clamps of long service life, to overcome deficiency of the prior art.

For achieving the above object, the utility model has adopted following technical scheme:

A kind of pcb board anchor clamps, comprise fixture template, this fixture template is to be interconnected to constitute by the upper plate of in the vertical direction setting straggly and lower plate, the groove able to hold PCB that forms between upper plate and the lower plate, the longitudinally of this fixture template upper edge PCB also is provided with guide groove, the guide groove two ends are arranged at respectively on upper plate and the lower plate, lay in the guide groove and can cooperate the location paper clip that PCB is fixing with fixture template, it is characterized in that, described location paper clip comprises spacer and the deformed spring with slide block and spring mounting groove, spacer is inserted in the guide groove and can slides along this guide groove, the lower surface of guide groove one end place upper plate is provided with a bar-shaped trough, this bar-shaped trough and guide groove one end are right-angled intersection and distribute, its both infalls are the open-work shape, deformed spring is the claw that is bent to form by linear wire one end, heterotypic spring is embedded in the spring mounting groove, spring mounting groove one side inwall is shored on its crook top, its stem and bar-shaped trough inwall and spring mounting groove opposite side inwall are fitted, the positioning convex that an end setting of the contiguous lower plate of spacer can cooperate with the location hole on the PCB.

Particularly, described spacer upper surface is provided with first slide block and second slide block, and the spring mounting groove is arranged between first slide block and second slide block.

One end of the contiguous lower plate of described spacer has taper structure.

Described PCB one end is fixed on the fixture template by the location paper clip, and other end setting can be passed for alignment pin, with the location hole that PCB and fixture template are fixed.

In these pcb board anchor clamps, carry out trickle adjustment, can PCB be fixed on the fixture template by the location paper clip that mainly constitutes by spacer and heterotypic spring by structure to the clamping plate mould.The location paper clip that constituted by auxiliary sliding material, dowel pin and socket sparrow spring in the case, not only can save partial component, save production cost, and used heterotypic spring partly is held between upper plate and the spacer, it only receives the effect of power on horizontal direction, and the elastic force deformation that therefore produces level, do not upspring and can not be out of shape in the vertical, thereby influence the bond strength of spacer and fixture template.

Compared with prior art, the beneficial effects of the utility model are: this pcb board clamp structure is simply firm, with low cost, and long service life, can be in dismounting pcb board operation process, effectively improve operating efficiency and promote yield, and reduce production costs, be suitable in extensive pcb board Application in Manufacturing Industry.

Description of drawings

Below in conjunction with the drawings and the specific embodiments content of the present utility model is described further.

Fig. 1 be formerly in the technology PCB with the planar structure schematic diagram of clamp assembly;

Fig. 2 is the fixture template of the part that PCB uses clamp assembly among Fig. 1 and the decomposition texture schematic diagram of location paper clip;

Fig. 3 is the planar structure schematic diagram of pcb board anchor clamps in this case embodiment;

Fig. 4 is the decomposition texture schematic diagram of location paper clip in this case embodiment;

Fig. 5 is a fixture template and the partial enlarged drawing of locating the paper clip package assembly among Fig. 3;

Fig. 6 is the upward view of pcb board anchor clamps in this case embodiment;

Fig. 7 is a fixture template and the partial enlarged drawing of locating the paper clip package assembly among Fig. 6.

Embodiment

Pcb board anchor clamps shown in Fig. 3～6 comprise fixture template 10 ' and the location paper clip 30 ' that is used to install pcb board 20, and location paper clip 30 ' comprises location copper sheet 31 ' and heterotypic spring 32 '.

A corner face of pcb board 20 is provided with location hole 21, one alignment pins 4 and passes this location hole, and this corner and the fixture template 10 ' of PCB is fixing, connects on the another side edged surface of pcb board 20 location paper clip 30 ' is set.

Above-mentioned fixture template 10 ' is to be interconnected to constitute by the upper plate 11 ' of in the vertical direction setting straggly and lower plate 12 ', the groove able to hold PCB that forms between upper plate and the lower plate, the longitudinally of this fixture template upper edge PCB also is provided with guide groove 13 ', guide groove 13 ' two ends are arranged at respectively on upper plate and the lower plate, lay location paper clip 30 ' in the guide groove, location copper sheet 31 ' in the paper clip 30 ' of location is inserted in the guide groove and can slides along this guide groove, copper sheet 31 ' upper surface, location is provided with the first slide block 31a ' and the second slide block 31b ', spring mounting groove 31c ' is set between first slide block and second slide block, the lower surface of guide groove 13 ' one end place upper plate 11 ' is provided with a bar-shaped trough 5, this bar-shaped trough 5 is right-angled intersection with guide groove one end and distributes, its both infalls are the open-work shape, deformed spring 32 ' is the claw that is bent to form by linear wire one end, heterotypic spring is embedded in the spring mounting groove, its crook 32a ' shores on the top a spring mounting groove 31c ' side inwall, its stem 32b ' fits with bar-shaped trough inwall and spring mounting groove opposite side inwall, the positioning convex 31d ' that one end setting of the contiguous lower plate of location copper sheet 31 ' can cooperate with the location hole 22 on the PCB, and this is held and is wedge shape.

The setting of above-mentioned location copper sheet 31 ' the last first slide block 31a ' and the second slide block 32b ' is for location copper sheet 31 ' can unhinderedly be slided in guide groove 13 ' along the length direction of above-mentioned PCB 20.

Copper sheet 31 ' one end in above-mentioned location is inserted in the guide groove 13 ', locating the location hole 22 that positioning convex 31d ' on the copper sheet 31 ' is inserted on the pcb board 20 is simultaneously fixed location copper sheet 31 ', positioning convex 31d ' can adopt inverted truncated cone-shaped structure or other by top to the narrow and small gradually terrace with edge shape structure in bottom so that the location copper sheet 31 ' more fastening with combining of pcb board.

Lower surface at above-mentioned guide groove 13 ' one end place upper plate 11 ' is provided with the bar-shaped trough that is the right-angled intersection distribution with guide groove one end, and infall is an open-work, like this, after heterotypic spring 32 ' being installed in the spring mounting groove 31c ' of location copper sheet 31 ', its be fastened on upper plate 11 ' lower surface and the location copper sheet 31 ' the upper surface between particularly, the set-up mode of deformed spring 32 ' in spring mounting groove 31c ' is, shore a spring mounting groove 31c ' side inwall with the crook 32a ' top of deformed spring 32 ', and stem 32b ' fits with bar-shaped trough inwall and spring mounting groove opposite side inwall, promptly, fit in the plane, whole place of heterotypic spring 32 ' and spring mounting groove 31c ' bottom surface, and the part of heterotypic spring is embedded in spring mounting groove 31c ', and remainder stretches out with the upper plate lower surface close by spring mounting groove 31c ' both sides respectively.Such mode can heterotypic spring 32 ' directly will be located copper sheet 31 ' and be fixed with fixture template, and when preventing to locate copper sheet 31 ' and in guide groove 13 ', sliding by coming off in the guide groove 13 ', and need not other auxiliary fixed component.

With location copper sheet 31 ' fixedly during pcb board 20, location copper sheet 31 ' can be located to advance to lower plate 12 ' along guide groove 13 ' in the slide block mode, this moment, heterotypic spring shrank because of the effect that is subjected to the power between spring mounting groove 31c ' and the bar-shaped trough 5, then will locate in the location hole 22 on positioning convex 31d ' the insertion pcb board 20 on the copper sheet 31 ', after confirming that above-mentioned positioning convex 31d ' has fixed PCB20, cancel the thrust that is applied on the copper sheet 31 ' of location, then locate copper sheet 31 ' and pcb board and lock because of heterotypic spring.

Location copper sheet 31 ' is provided with the preferred wedge structure of an end of positioning convex 31d ', like this, this end of location copper sheet 31 ' can with more firm the engaging of lower plate 12 ', further prevent to locate paper clip 30 ' by coming off on the fixture template 10 '.

Above embodiment only is used to illustrate content of the present utility model, and in addition, the utility model also has other execution modes.But all employings are equal to replaces or technical scheme that the equivalent deformation mode forms all should drop in the protection range of the present utility model.

Claims

1. pcb board anchor clamps, comprise fixture template, this fixture template is to be interconnected to constitute by the upper plate of in the vertical direction setting straggly and lower plate, the groove able to hold PCB that forms between upper plate and the lower plate, the longitudinally of this fixture template upper edge PCB also is provided with guide groove, the guide groove two ends are arranged at respectively on upper plate and the lower plate, lay in the guide groove and can cooperate the location paper clip that PCB is fixing with fixture template, it is characterized in that, described location paper clip comprises spacer and the deformed spring with slide block and spring mounting groove, spacer is inserted in the guide groove and can slides along this guide groove, the lower surface of guide groove one end place upper plate is provided with a bar-shaped trough, this bar-shaped trough and guide groove one end are right-angled intersection and distribute, its both infalls are the open-work shape, deformed spring is the claw that is bent to form by linear wire one end, heterotypic spring is embedded in the spring mounting groove, spring mounting groove one side inwall is shored on its crook top, its stem and bar-shaped trough inwall and spring mounting groove opposite side inwall are fitted, the positioning convex that an end setting of the contiguous lower plate of spacer can cooperate with the location hole on the PCB.

2. pcb board anchor clamps according to claim 1 is characterized in that described spacer upper surface is provided with first slide block and second slide block, and the spring mounting groove is arranged between first slide block and second slide block.

3. pcb board anchor clamps according to claim 1 and 2 is characterized in that an end of the contiguous lower plate of described spacer has taper structure.

4. pcb board anchor clamps according to claim 1 is characterized in that described PCB one end is fixed on the fixture template by the location paper clip, and other end setting can be passed for alignment pin, with the location hole that PCB and fixture template are fixed.