CN1735324A

CN1735324A - Board unit

Info

Publication number: CN1735324A
Application number: CN 200510083205
Authority: CN
Inventors: 铃江修; 森本正治
Original assignee: Uber Co Ltd
Current assignee: Uber Co Ltd
Priority date: 2004-07-20
Filing date: 2005-07-07
Publication date: 2006-02-15
Anticipated expiration: 2025-07-07
Also published as: CN100525593C

Abstract

To provide a board unit having an insertion-extraction handle locking structure with which a desired locking force can be easily generated and the locking force is hardly lowered, and which is low in production cost. An insertion-extraction handle 5 is rotatably supported by a panel body 4. A spring unit 6 is resiliently held in a spring receiving hole 45 formed in the panel body 4 and has a first spring part 61 which, when a stopper part 53 of the insertion-extraction handle 5 is inserted into the spring receiving hole 45, applies a resistance to the insertion of the stopper part 53, and which, when the stopper part 53 is extracted from the spring receiving hole 45, applies a resistance to the extraction of the stopper part 53. Second spring parts 62 of the spring unit 6 are configured to generate a resistance to removal of the spring unit 6 which is greater than the resistance to the insertion of the stopper part 53 between the spring unit 6 and the spring receiving hole 45 when the stopper part 53 is inserted into the spring receiving hole 45 and to generate a resistance to removal of the spring unit 6 which is greater than the resistance to the extraction of the stopper part 53 between the spring unit 6 and the spring receiving hole 45 when the stopper part 53 is extracted from the stopper receiving hole 45.

Description

Board unit

Technical field

The present invention relates to a kind of board unit, particularly can be installed in the board unit in the substrate reception framework with plugging.

Background technology

Technology on the rack (subrack) of the known e-machine assembly that has the circuit substrates such as tellite that to have equipped circuit block to be installed in to constitute a communicator etc. with plugging.(for example with reference to international open communique WO03/086039 number of patent documentation 1[] " background technology " part).In this example, shown in Figure 12 A and Figure 12 B, rack 120 is made of the material of cuboid, possesses the incorporating section 121 with peristome 121a in the front face side of taking in a plurality of circuit substrates.In this incorporating section 121, be provided with from peristome 121a towards inside and by the guide rail 127 that extends along fore-and-aft direction ... 127.In addition, the peristome 121a side below on rack 120, reaching, rail 124,124 before being respectively equipped with.In addition, on this preceding rail 124, be provided with the 1st handle contact site 125 and the 2nd handle contact site 126.

Circuit substrate 110 as shown in figure 13, the diagram right side rear end side, be provided with board connector 115.Front in the diagram of circuit substrate 110 left side is provided with front panel 111, and in front on the upper side and lower side of plate 111, is respectively equipped with a pair of up and down plug with handle 100,100.

Should each plug use handle 100 shown in Figure 14 A, in rear end side, possess by be located at circuit substrate 110 on grip handle lock bonding part 112 freely lock take off sealed locked 102 of ground, have be used for the 1st handle contact site the 125, the 2nd handle contact site 126 of the preceding rail 124 of rack 120 contact respectively the 1st be touched the portion that is touched 103 that the 103a of portion and the 2nd is touched the 103b of portion, at locked 102 be touched quilt between the portion 103 and be installed in rotary shaft 104 on the handle mounting of being located on the circuit substrate 110 140 with rotating freely.In the front of plug, possesses bulldozing operation portion 101 with the 1st 101a of bulldozing operation portion and the 2nd 101b of bulldozing operation portion with handle 100.

In addition, when circuit substrate 110 is inserted rack 120, formation will plug with the state shown in locked 102 of handle 100 Figure 14 B that takes off from grip handle lock bonding part 112, from this state, circuit substrate 110 is put into rack 120, and the 1st 101a of bulldozing operation portion with handle 100 pushes to the upside (direction of arrow R1) of Figure 14 B with plug.Like this, plug is the center rotation of rotation with handle 100 with rotary shaft 104, and plug is contacted with the 1st handle portion contact site 125 that the 1st of handle 100 is touched the preceding rail 124 of 103a of portion and rack 120.In addition, when making plug with handle 100 rotations, the 1st is touched the 103a of portion rotation, thus, circuit substrate 110 (illustrates the X1 direction) rearward with respect to rack 120 and moves, and the substrate-side connector 115 of circuit substrate 110 is inserted into the rack side-connector of being located on the rack 120 (not shown).In addition, under this state, shown in Figure 14 A, plug is locked on the grip handle lock bonding part 112 with locked 102 of handle 100.

On the other hand, when the circuit substrate 110 that will insert rack 120 when rack 120 is extracted, from the state shown in Figure 14 A, with plug with the 2nd 101b of bulldozing operation portion of handle 100 to diagram lower side (direction of the arrow R2) pushing of the opposite side of press direction of described the 1st 101a of bulldozing operation portion.Like this, will be as shown in Figure 14B, the locking of locked 102 and grip handle lock bonding part 112 is untied, and making plug be touched the 103b of portion with the 2nd of handle 100 contacts with the 2nd handle contact site 126 of the preceding rail 124 of rack 120, in addition, when making plug with handle 100 rotations, the 2nd is touched the 103b of portion rotation, like this, circuit substrate 110 is moved with respect to the front side (the X2 direction of figure) of rack 120 to illustrated left side, the substrate-side connector 115 of circuit substrate 110 is extracted from the rack side-connector 123 of rack 120.

In circuit substrate 110, to plug with handle 100 usefulness synthetic resin and make, on the other hand, shown in Figure 14 A, by its shape design is made it to have elasticity, just can with plug with locked 102 of handle 100 to the grip handle lock bonding part 112 thrusters lean on, just can will plug usefulness handle 100 and circuit substrate 110 locks thus with given latching force.By formation like this, the circuit substrate 110 that is inserted into rack 120 is not extracted easily.

But, by plug being obtained required latching force with the shape design of handle 100 and being not easy.In addition, when carrying out Plug Action repeatedly or placing for a long time,, therefore aspect durability, have any problem owing to can't ignore the reduction of the latching force that wearing and tearing or distortion caused of locked 102 and grip handle lock bonding part 112.In addition, owing to grip handle lock bonding part 112 need be fixedly arranged on the circuit substrate 110, so manufacturing process becomes complicated, thereby becomes the essential factor that manufacturing cost rises.

Summary of the invention

The objective of the invention is to, solve the problem of this kind circuit substrate in the past, provide to have possessed easily to obtain required latching force, make latching force be difficult to reduce, and the plug of the low cost of manufacture board unit of the locked configuration of handle.

Board unit of the present invention can be installed in the board unit in the substrate reception framework with plugging.This board unit possess base main body, with base main body support and be provided with panel body that the stopper section enters the hole regularly, can be supported in rotatably on the panel body plug with handle, by on-fixed remain on the stopper section and enter hole and plug spring assembly with any one party in the handle.Plug possesses operating portion with handle, just combined when being operated to given fixed position and will be removed the framework joint portion that constitutes with the mode that combines of the described part of substrate reception framework when being operated to given releasing position according to being rotated when operating portion is rotated with the part of substrate reception framework when operating portion, will be entered that the stopper section enters the hole when being operated to the fixed position and will be entered the stopper section that the mode that withdraws from the hole constitutes when being operated to the releasing position from the stopper section according to being rotated when operating portion is rotated when operating portion.Spring assembly has to enter in the stopper section that the stopper section enters that the Kong Shixiang plug is given given intake resistance with handle and enter when withdrawing from the hole from the stopper section in the stopper section gives the given main spring portion that withdraws from resistance to plug with handle.

Though feature of the present invention can extensively be represented on ground as implied above, its formation and content and purpose and feature will obtain further clear and definite on basis in conjunction with the accompanying drawings by following disclosing.

Description of drawings

Fig. 1 is the front view of state that has inserted the board unit 2 of a plurality of an embodiment of the invention on the rack 1 that is illustrated in as the substrate reception framework.

Fig. 2 A is the concept map that is used to illustrate the state that has inserted board unit 2 on rack 1, and is corresponding with right view.

Fig. 2 B is the concept map that is used to illustrate from the rack 1 state after board unit 2 extracted, and is corresponding with right view.

Fig. 3 A is the enlarged drawing that the partial detailed of Fig. 2 A is drawn.

Fig. 3 B is the enlarged drawing that the partial detailed of Fig. 2 B is drawn.

Fig. 4 A is the figure that is used to illustrate the state that has inserted board unit 2 on rack 1, is the partial perspective view that has omitted the board unit 2 of rack 1.

Fig. 4 B is the figure that is used to illustrate from the rack 1 state after board unit 2 extracted, and is the partial perspective view that has omitted the board unit 2 of rack 1.

Fig. 5 A is the figure of expression as the spring assembly 6 of an example of employed spring assembly in the board unit 2, and is corresponding with right view.

Fig. 5 B is the stereogram of the formation of expression spring assembly 6.

Fig. 6 A is the figure of expression as the spring assembly 66 of another example of employed spring assembly in the board unit 2, and is corresponding with right view.

Fig. 6 B is the stereogram of the formation of expression spring assembly 66.

Fig. 7 A has inserted the figure that other the partial detailed of right view of state of board unit 202 of execution mode of the present invention is drawn with being illustrated on the rack 1.

Fig. 7 B is the figure that the partial detailed of the right view of the state after expression is extracted board unit 202 from the rack 1 is drawn.

Fig. 8 A is that expression is installed in the stereogram that plugs the spring assembly 206 before using on the handle 5.

Fig. 8 B is spring assembly 206 is seen in expression from the direction different with Fig. 8 A a stereogram.

Fig. 9 A and Fig. 9 B are used to illustrate spring assembly 206 is installed in the figure of plug with the order on the handle 5.

Figure 10 A and Figure 10 B are used to illustrate that plug enters/figure of situation when the stopper section of exit surface plate body 4 enters hole 245 with the stopper section 53 of handle 5, and be corresponding with the section XIA-XIA of Fig. 7 A.

Figure 11 A and Figure 11 B are used to illustrate that plug enters/figure of situation when the stopper section of exit surface plate body 4 enters hole 245 with the stopper section 53 of handle 5, and be corresponding with the section XIA-XIA of Fig. 7 A.

Figure 12 A is the front view of the rack 120 of insertion circuit substrate 110 in the past.

Figure 12 B is the upward view of rack 120.

Figure 13 is the end view of circuit substrate 110 in the past.

Figure 14 A inserts racks 120 to circuit substrate 110 that will be in the past and the locked portion with handle of will plugging is locked in the major part enlarged side view that the part of the state on the grip handle lock bonding part is represented with section.

Figure 14 B is the major part enlarged side view of representing with section with the part of the state that locked of handle the grip handle lock bonding part is taken off from plug.

Embodiment

Fig. 1 is the front view of state that has inserted the board unit 2 of a plurality of (being 14) one embodiment of the present invention on the rack 1 that is illustrated in as the substrate reception framework among this figure.Fig. 2 A is the concept map that is used to illustrate the state that has inserted board unit 2 on rack 1, and is corresponding with right view.Fig. 2 B is the concept map that is used to illustrate from the rack 1 state after board unit 2 extracted, and is corresponding with right view.Fig. 3 A is the enlarged drawing that the partial detailed of Fig. 2 A is drawn.Fig. 3 B is the enlarged drawing that the partial detailed of Fig. 2 B is drawn.

Fig. 4 A is the figure that is used to illustrate the state that has inserted board unit 2 on rack 1, is the partial perspective view that has omitted the board unit 2 of rack 1.Fig. 4 B is the figure that is used to illustrate from the rack 1 state after board unit 2 extracted, and is the partial perspective view that has omitted the board unit 2 of rack 1.Fig. 5 A is the figure of expression as the spring assembly 6 of an example of employed spring assembly in the board unit 2, and is corresponding with right view.Fig. 5 B is the stereogram of the formation of expression spring assembly 6.

Rack 1 shown in Figure 1 is the formation roughly the same with the rack 120 shown in Figure 12 A and Figure 12 B.Shown in Fig. 3 B, rack 1 possesses preceding rail 11, and the roughly front end (X2 direction end among the figure) at preceding rail 11 is formed with the handle hang part 12 that combines with the framework joint portion 52 of plug handle 5 described later.In addition, near the front (X2 side) of rack 1, be formed with the internal thread (not shown) that is used to screw in set bolt 7 described later.

Board unit 2 shown in Fig. 1 is disposed abreast with plug direction (X1 and X2 direction), can be installed on the rack 1 with plugging.Shown in Fig. 2 A, board unit 2 possess base main body 3 that circuit etc. has been installed, regularly supporting substrate main body 3 panel body 4, can be supported in rotatably on the panel body 4 about (Z1 and Z2 direction) a pair of plug with handle 5, be used for panel body 4 is fixed in a pair of set bolt 7 up and down on the rack 1 reliably.

Shown in Fig. 3 B, set bolt 7 possesses knob 72, is threaded into the bolt part 71 on the rack 1.In addition, board unit 2 also possesses by on-fixed ground (in this example for flexibly) and remains on as a pair of spring assembly of being located on the spring retaining hole 45 that a pair of stopper section up and down on the panel body 4 enters the hole 6 up and down.And, the spring retaining hole 45 of bottom (Z2 direction portion) and spring assembly 6 and not shown.Short of specifying, a pair of up and down be configured to symmetrical up and down (minute surface symmetry) in this execution mode constructs.So for the convenience on illustrating, only the structure to top (Z1 direction portion) describes.

Shown in Fig. 4 B, panel body 4 possess with respect to the side panel 41 of the almost plane shape of base main body 3 configured in parallel, from the side the almost plane shape holded up to approximately perpendicular direction (Y1 direction) of the front end of plate 41 (X2 direction end) front panel 42, by from the end (Y1 direction end) of front panel 42 (X1 direction end) crooked joggling part 43 rearward.

Near near the upper end (Z1 direction end) the front end (X2 direction end) of side panel 41, towards laterally be equipped with handle axle 44 (Y1 direction).In this example, handle axle 44 becomes 2 sections structures of large-diameter portion 44a and minor diameter part 44b.

The prominent position of establishing of the handle axle 44 in the middle of the other end of front panel 42 (Y2 direction end) is neighbouring in order not hinder plug to use the mobile and cut of handle 5, is formed with notch 46.Ratio notch 46 in the middle of the other end of front panel 42 (Y2 direction end) runs through front panel 42 ground and is formed with approximate rectangular spring retaining hole 45 slightly by on the below (Z2 direction).

Though the material of panel body 4 or formation etc. are not specially limited, for example preferred whole block material formation of sheet metal having been implemented stamping-out processing and bending machining etc. that adopts.

Plug with handle 5 possess base portion 54, the framework junction surfaces 52 that form continuously with base portion 54, and the bar portion 56, the stopper section midway 53 that is formed at bar portion 56 that are provided with continuously of base portion 54, the operating portion 51 that is formed at the other end of bar portion 56.Shown in Fig. 4 A and Fig. 4 B, plug is formed in the approximate tabular that has approximate homogeneous thickness on Y1 and the Y2 direction with handle 5.That is, plug all is approximately uniform thickness (Y1 and a Y2 direction size) with each component part (base portion 54, framework joint portion 52, bar portion 56, stopper section 53 and operating portion 51) of handle 5, and constitutes approximately uniform plane.

Substantial middle in base portion 54 is provided with through hole 55.By embed the large-diameter portion 44a of described handle axle 44 in through hole 55, plug just can be remained on the side panel 42 of panel body 4 rotatably with handle 5.

Framework joint portion 52 is made into the shape of 1 recess of 2 protuberance clampings, when operating portion 51 is rotated when being operated to given fixed position (position shown in Fig. 3 A), just combine with handle hang part 12 on the preceding rail 11 that is formed at rack 1, when operating portion 51 is rotated when being operated to given releasing position (position shown in Fig. 3 B), will remove and the combining of handle hang part 12.

Stopper section 53 is made its head end approximate heart-shaped, when operating portion 51 is rotated when being operated to fixed position (position shown in Fig. 3 A), just enter spring retaining hole 45, be operated to when removing position (position shown in Fig. 3 B), will from spring retaining hole 45, withdraw from when operating portion 51 is rotated.

Though plug is with the material of handle 5 or constitute and be not specially limited, for example can adopts the whole block material formation that synthetic resin has been carried out being shaped processing, or metallic plate implemented the whole block material formation of stamping-out processing etc.

Shown in Fig. 4 B, near near the upper end 33 (Z1 direction end) the front end 32 (X2 direction) of base main body 3, be provided with through hole 31 with the roughly external diameter of the external diameter of the minor diameter part 44b of handle axle 44.In this through hole 31, insert the minor diameter part 44b of handle axle 44, utilize Screw (not shown) etc. to be fixed on the handle axle 44.And, in this embodiment, on the substrate fixed part (not shown) beyond the handle axle 44, also base main body 3 is fixed on the panel body 4.

Shown in Fig. 4 B, board unit 2 forms side panel 41, plug with the base portion 54 of handle 5, base main body 3 with this order along horizontal (from the direction of Y2 towards Y1) stacked structure.Certainly,, when handle axle 44 is rotated,, carry out the size of each member and set according to the base portion 54 of using handle 5 in plug with any one mode of not disturbing of side panel 41 and base main body 3.

Shown in Fig. 3 A, Fig. 3 B, Fig. 4 A and Fig. 4 B, in fact plug is configured in the inboard of front panel 42 with the base portion 54 of handle 5.Bar portion 56 when operating portion 51 is in a fixed position, be positioned at the outside of front panel 42 and form with front panel 42 near and approximately parallel state, when operating portion 51 was in the releasing position, the outside and the formation that then are positioned at front panel 42 were similar to the states that erect with respect to front panel 42.Stopper section 53 is positioned at the inboard of front panel 42 when operating portion 51 is in a fixed position, be positioned at the outside of front panel 42 when operating portion 51 is in the releasing position.

The 1st spring portion 61 (aftermentioned) of spring assembly 6 is constituted by the mode according to the inboard that is positioned at front panel 42.The 2nd spring portion 62 (aftermentioned) is also constituted according to the mode of in fact (promptly removing line part 62c) and be positioned at the inboard of front panel 42.

Shown in Fig. 5 A, it is to be similar to the bridge formation portion 63 of " コ " font (by bridge formation plate 63b that spring assembly 6 possesses the section (YZ section) vertical with fore-and-aft direction (X2 and X1 direction), constitute with the sheet 63a that holds up that approximately perpendicular direction of bridge formation plate 63b and bridge formation plate 63b form continuously on the edge respectively from the two ends of bridge formation plate 63b), from the front end of holding up sheet 63a (X2 direction end) of bridge formation portion 63 towards the place ahead (X2 direction) slightly outwards form (Z1 and Z2 direction side) about (Z1 and Z2 direction) a pair of conduct enter the 2nd spring portion 62 of joint portion, hole, from the rear end of holding up sheet 63a (X1 direction end) of bridge formation portion 63 to the inboard of holding up sheet 63a (Z2 and Z1 direction side) by warpage for approximate " U " shape and towards the place ahead (X2 direction) be formed extended at both sides about (Z1 and Z2 direction) a pair of the 1st spring portion 61 as main spring portion.

The front end of the 1st spring portion 61 constitutes the protuberance 61a that forms with the approximate circle arcuation that becomes convex in the inboard.That is, as shown in Figure 3A, protuberance 61a is made into the shape of with the profile of the stopper section 53 of handle portion 5 its armful being gone into along plug.So, when plug enters spring retaining hole 45 with the stopper section 53 of handle 5, just can contact and give given intake resistance, and when from spring retaining hole 45, withdraw from just can contact and give the given resistance that withdraws from stopper section 53 in stopper section 53 with stopper section 53.

Shown in Fig. 5 A, front in the 2nd spring portion 62 at first, forms the protuberance 62a that the outside becomes the approximate circle arcuation of convex, and be formed on then the inboard become convex by the protuberance 62b of warpage for approximate " U " font, end becomes by the line part 62c of square one-tenth outward.When being installed in spring assembly 6 in the spring retaining hole 45, approximate " U " shape end 61b side of the 1st spring portion 61 of spring assembly 6 front side (X2 side) from spring retaining hole 45 is inserted towards rear side (X1 side), the state that forms Fig. 5 A gets final product.When becoming this state, 6 of spring assemblies otherwise make protuberance 62a resist the spring force of the 2nd spring portion 62 and displacement to the inside just can not break away from from spring retaining hole 45.

Promptly, contact by upper and lower side (Z1 and the Z2 end) periphery that makes protuberance 62a and the rear side (X1 side) of spring retaining hole 45, the disengaging resistance of (X2 direction) forwards of spring assembly 6 (disengaging resistance when withdrawing from) will be greater than from stopper section 53 and the described corresponding power of resistance (power of X2 direction) that withdraws from.In addition, by line part 62c is contacted with upper and lower side (Z1 and the Z2 end) periphery of the front side (X2 side) of spring retaining hole 45, the disengaging resistance of (X1 direction) rearward of spring assembly 6 (breaking away from resistance when entering) will be greater than the power corresponding with described intake resistance (power of X1 direction) from stopper section 53.

Shown in Fig. 4 B, spring assembly 6 also makes it most of identical with the base portion 54 of handle 5 with plug, is housed in the gap of being located at horizontal (Y1 and Y2 direction) between side panel 41 and the base main body 3.

Though the material or the formation of spring assembly 6 are not particularly limited, for example preferred whole block material that adopts the sheet metal that spring is used to implement stamping-out processing and bending machining etc. constitutes.

Fig. 6 A is the figure of expression as the spring assembly 66 of another example of employed spring assembly in the board unit 2, and is corresponding with right view.Fig. 6 B is the stereogram of the formation of expression spring assembly 66.As shown in Figure 6A, spring assembly 66 have only 1 the 1st spring portion 61 aspect, different with the spring assembly 6 that a pair of the 1st spring portion 61 is arranged.That is, the spring assembly shown in Fig. 6 A 66 is the formations after 1 the 1st spring portion 61 from plug begins to be positioned at farther side with handle 5 with respect to the pivot of panel body 4 in the middle of a pair of the 1st spring portion 61 of the spring assembly 6 shown in the pie graph 5A is removed.The formation of other of spring assembly 66 is identical with the formation of spring assembly 6.By formation like this, just can be shown in Fig. 3 B, successfully accepting to draw with handle axle 44 is the stopper section 53 that the circular arc at center enters.

Below, the action when board unit 2 is inserted racks 1 describes.At first, shown in Fig. 3 B, the given position that board unit 2 is inserted racks 1, the guide rail (not shown) in the rack 1 rearward (X1 direction) pushes.At this moment, make plug make it to keep releasing position (position shown in Fig. 3 B) along the rotation of R2 direction with the operating portion 51 of handle 5.And, for when decontroling (when extracting) plug is always come with the operating portion 51 of handle 5 remove the position, also can use force application mechanism such as spring will plug usefulness handle 5 to the backup of R2 direction.

As shown in Figure 3A, with the penetralia that board unit 2 is pushed into rack 1 side by side, make operating portion 51 become fixed position (position shown in Fig. 3 A) along R1 direction rotation.Utilize this action, plug combines with the handle hang part 12 of rack 1 with the framework joint portion 52 of handle 5, and plug uses the stopper section 53 of handle 5 flexibly to combine with the protuberance 61a (with reference to Fig. 5 A) of the 1st spring portion 61 of spring assembly 6.Like this, plug just can be kept the fixed position with the operating portion 51 of handle 5.More reliably fixedly the time, also set bolt 7 can be screwed in racks 1 and fastening.

Below, the action when board unit 2 is extracted from rack 1 describes.At first, under the fastened situation of set bolt 7, it is unclamped.Then, from the state shown in Fig. 3 A, make plug use the operating portion of handle 5 to rotate to the R2 direction.Like this, plug combines with the elasticity of the protuberance 61a (with reference to Fig. 5 A) of the 1st spring portion 61 of spring assembly 6 with the stopper section 53 of handle 5 and is disengaged, and the combination that plugs with the handle hang part 12 of the framework joint portion 52 of handle 5 and rack 1 is disengaged.Just under this state, if with board unit 2 forwards (X2 direction) extract, then become the state shown in Fig. 3 B.

And described invention also can followingly be grasped.

Promptly, can be installed in the board unit in the substrate reception framework with plugging, it possesses base main body, supporting substrate main body and be provided with the panel body of spring retaining hole regularly, be maintained at the spring assembly in the spring retaining hole, can be supported on the plug handle on the panel body rotatably, plug possesses operating portion with handle, just combined when being operated to given fixed position according to being rotated with the part of substrate reception framework when operating portion, and just remove when being operated to given releasing position and framework joint portion that the mode that combines of the described part of substrate reception framework constitutes when operating portion is rotated, be rotated the stopper section that the mode that just withdraws from when being operated to the releasing position constitutes according to being rotated when operating portion when being operated to the fixed position with regard to entering the spring retaining hole when operating portion from the spring retaining hole, spring assembly possesses and is contacted with the stopper section when entering the spring retaining hole in the stopper section and give given intake resistance, and contact with the stopper section when from the spring retaining hole, withdrawing from and given the 1st spring portion that the given mode that withdraws from resistance constitutes in the stopper section, by according to flexibly combine with the spring retaining hole and when entering the spring retaining hole in the stopper section and the spring retaining hole between produce than described intake resistance bigger enter the time break away from resistance, when from the spring retaining hole, withdrawing from the stopper section and the spring retaining hole between produce than described withdraw from resistance bigger withdraw from the time disengaging resistance the 2nd spring portion that constitutes of mode.

If grasp the present application as described above, then can derive following technique effect.That is, owing to constitute spring assembly dividually with handle with plug, so the degree of freedom height that manufactures and designs of spring assembly.Thus, just can easily obtain to have the required good spring assembly aspect durability that withdraws from resistance.In addition, owing to spring assembly is flexibly combined with the spring retaining hole, rather than, therefore just be difficult to produce excessive stress or the eccentric wear damage that causes by fixing combination by combination regularly.Thus, just can further improve durability.In addition, when spring assembly being installed in the spring retaining hole, owing to the flexible bounce of only resisting the 2nd spring portion is inserted in the spring retaining hole and got final product, therefore compare with the situation of combination regularly, can omit operations such as riveted joint, thus, just can suppress manufacturing cost lower.That is, can realize possessing and not only can easily obtain required latching force, and latching force is difficult to reduce and the plug of low cost of manufacture with the board unit of the locked configuration of handle.

Fig. 7 A has inserted the figure that other the partial detailed of right view of state of board unit 202 of execution mode of the present invention is drawn with being illustrated on the described rack 1, corresponding with Fig. 3 A of described execution mode.Fig. 7 B is the figure that the partial detailed of the right view of the state after expression is extracted board unit 202 from the rack 1 is drawn, and is corresponding with Fig. 3 B of described execution mode.

In the board unit 2 of described execution mode, though spring assembly 6 remained on is located at entering in the spring retaining hole 45 in hole on the panel body 4 as the stopper section, but in the board unit 202 of this execution mode, constitute with the mode on the handle 5 according to spring assembly 206 being remained on plug.

That is, the board unit 202 of this execution mode and the board unit 2 of described execution mode only spring assembly self shape and keep the place of spring assembly different, other formation is identical.And, in this execution mode, in principle,, use identical symbol for the part identical with described execution mode.

Fig. 8 A is that expression is installed in the stereogram that plugs the spring assembly 206 before using on the handle 5.Fig. 8 B is this spring assembly 206 is seen in expression from the direction different with Fig. 8 A a stereogram.And among Fig. 8 A and Fig. 8 B, symbol X1, X2, Y1, Y2, Z1 and the Z2 of expression direction is the symbol that the situation when making plug enter hole 245 with the stopper section of the stopper section 53 of handle 5 and entering surface plate body 4 shows accordingly.

Figure 10 A and Figure 10 B, Figure 11 A and Figure 11 B are used to illustrate that plug enters/figure of situation when the stopper section of exit surface plate body 4 enters hole 245 with the stopper section 53 of handle 5.And, though entering the position and the shape in hole 245, the stopper section is not specially limited, in this execution mode, adopt position and the shape identical with the spring retaining hole 45 of described execution mode.

Shown in Fig. 7 A and Fig. 7 B, in the board unit 202 of this execution mode, spring assembly 206 is maintained at plug with near the stopper section 53 of handle 5.

Shown in Fig. 8 A and Fig. 8 B, the member that spring assembly 206 is to use the plate-shaped springs member that main spring portion 261 and handle joint portion 262 are integrally formed.

Main spring portion 261 makes the plug shown in Fig. 7 A with the stopper section 53 of handle 5 has the mountain peak shape that enters the approximately perpendicular crest line 261c of direction (X1, X2 direction) in hole 245 with the stopper section that enters exit surface plate body 4.Handle joint portion 262 possesses the 1st hook portion 262a and the 2nd hook portion 262b.

The 1st hook portion 262a is formed towards this approach axis (X1 direction) continuously by the 261a of foot of the hill portion from the approach axis side (X1 direction side) of main spring portion 261, and is approximate " コ " font at its head end by warpage.Shown in Figure 10 B, utilize the 1st hook portion 262a, when stoping plug to enter hole 245 in the stopper section of entering surface plate body 4 when the X1 direction moves with the stopper section 53 of handle 5, spring assembly 206 with respect to plug with the situation of handle 5 to exit axis side (X2 direction side) disengaging.

The 2nd hook portion 262b is formed towards this exit axis (X2 direction) continuously by the 261b of foot of the hill portion from the exit axis side (X2 direction side) of main spring portion 261, and is approximate " コ " font reverse with the 1st hook portion 262a at its head end by warpage.Shown in Figure 11 B, utilize the 2nd hook portion 262b, stop plug when the X2 direction moves, entering when withdrawing from the hole 245 from the stopper section of panel body 4 with the stopper section 53 of handle 5, spring assembly 206 with respect to plug with the situation of handle 5 to approach axis side (X1 direction side) disengaging.And the 261a of foot of the hill portion, the 261b of foot of the hill portion and crest line 261c are by almost parallel ground formation mutually.

Spring assembly 206 also possesses the locational back side portion 263 that the 1st hook portion 262a and the 2nd hook portion 262b are being connected with a side that main spring portion 261 faces mutually that is configured in.That is, spring assembly 206 constitutes by the 1st hook portion 262a, the 261, the 2nd hook portion 262b of main spring portion and back side portion 263 are disposed circlewise with this order.

In this execution mode, back side portion 263 is made into approximate rectangular, and the one end is formed continuously with the 1st hook portion 262a.The mode that the other end of back side portion 263 is overlapped according to the end with the 2nd hook portion 262b constitutes.The superposed part of the end of the other end of back side portion 263 and the 2nd hook portion 262b is called overlapping 264.In overlapping 264, the end of the other end of back side portion 263 and the 2nd hook portion 262b is not combined, thereby can relatively move.

Spring assembly 206 also possess be used for making be installed in plug with the spring assembly 206 on the handle 5 along long side direction (Z1 of Fig. 7 A, Z2 direction) the mobile pair of locking sheet 265 of plug with the bar portion 56 of handle 5.In this execution mode, locking plate 265 is begun to form continuously respectively by Z1 direction end and the Z2 direction end from the approximate central part of back side portion 263.

Shown in Fig. 8 B, in being installed on the spring assembly 206 that plugs before using on the handle 5, locking plate 265 will be in order to plug with the handle 5 slotting easy warpages in spring assembly 206 backs of wearing ring-type, with the intersection of back side portion 263 by warpage slightly, but the degree of this warpage is more shallow obtuse angle, thereby can not cause obstruction when pulling out with handle 5 insert interting.

Spring assembly 206 being installed in plug with on the handle 5 time, at first, shown in Fig. 9 A, the spring assembly 206 of ring-type is worn with operating portion 51 sides of handle 5 are slotting from plug, make it the long side direction almost parallel ground with bar portion 56, move near the stopper section 53.

Then, shown in Fig. 9 B, according to will connect the mode that the backstop connecting portion 57 of plug with the bar portion 56 of handle 5 and stopper section 53 sandwiches from both sides, with pair of locking sheet 265 warpages of spring assembly 206.Like this, just can stop spring assembly 206 and plug to be moved abreast with the long side direction of the bar portion 56 of handle 5 is approximate.

Below, the situation when entering in the hole 245 to plug that spring assembly 206 has been installed with the stopper section of the stopper section 53 entering surface plate bodys 4 of handle 5 describes.From the state shown in Fig. 7 B (position is corresponding with removing), according to the mode that becomes the state shown in Fig. 7 A (corresponding) with the fixed position, when the R1 direction makes plug with handle 5 rotation, then shown in Figure 10 A, the main spring portion 261 and the stopper section of spring assembly 206 enters edge 245a (being right-hand member in this execution mode, the i.e. the Y1 end) contact in hole 245.

In addition, when making plug with handle 5 rotations along the R1 direction, then shown in Figure 10 B, the main spring portion 261 of spring assembly 206 is entered edge 245a from hole 245 to the stopper section pushes and strain.That is the height of main spring portion 261 (size of Y1, Y2 direction) step-down.For this kind distortion of making main spring portion 261 is more easy, as mentioned above, in overlapping 264, the other end of back side portion 263 and the end of the 2nd hook portion 262b are not engaged, make it and can relatively move.

Certainly, overlapping 264 overlap length (X1, X2 direction size) by according to plug with the stopper section 53 of handle 5 enter/relatively moving of the other end of back side portion 263 when the stopper section of exit surface plate body 4 enters hole 245 and the X1 of the end of the 2nd hook portion 262b, X2 direction compare bigger mode and set.

In addition, when making plug along the R1 direction, then become the state shown in Figure 11 A (corresponding) with the fixed position with handle 5 rotations.Under this state, spring assembly 206 is just got back to the state (state identical with Figure 10 A) before the strain.

On the contrary, when from the state shown in Figure 11 A, i.e. state shown in Fig. 7 A (corresponding) beginning with the fixed position, when the R2 direction made plug with handle 5 rotations, then spring assembly 206 just after strain shown in Figure 11 B, was got back to the state shown in Figure 10 A.

Like this, the main spring portion 261 of spring assembly 206 is out of shape by contacting with edge 245a that the stopper section enters hole 245 when plug enters the stopper section and enters hole 245 with the stopper section 53 of handle 5, produce intake resistance, and contact with edge 245a that the stopper section enters hole 245 when withdrawing from the hole 245 and be out of shape, produce and withdraw from resistance by entering from the stopper section in stopper section 53.

In addition, spring assembly 206 possesses and the handle joint portion 262 of plug with handle 5 on-fixed ground (that is, can be along the stopper section 53 enter hole 245 with respect to the stopper section enter direction (X1, X2 direction) the mobile specified rate ground that withdraws from) combination.The 1st hook portion 262a that constitutes handle joint portion 262 when stopper section 53 enters the stopper section and enters hole 245 and plug disengaging resistance when producing between with handle 5 greater than the entering of described intake resistance.The 2nd hook portion 262b that constitutes handle joint portion 262 enters from the stopper section in stopper section 53 and withdraws from the Shi Zaiyu plug the hole 245 and produce between with handle 5 greater than described disengaging resistance when withdrawing from the withdrawing from of resistance.

The board unit of this invention can be installed in the board unit in the substrate reception framework with plugging.This board unit possess base main body, regularly the supporting substrate main body and be provided with panel body that the stopper section enters the hole, can be supported on rotatably on the panel body plug with handle, by on-fixed remain on the stopper section and enter hole and plug with the spring assembly on any one party of handle.Plug possesses operating portion with handle, just combine when being operated to given fixed position and be rotated when being operated to given releasing position the framework joint portion that the mode that combines with regard to the described part of releasing and substrate reception framework constitutes when operating portion according to being rotated with the part of substrate reception framework when operating portion, when being rotated, operating portion just entered the stopper section that the mode that withdraws from the hole constitutes according to being rotated when operating portion when being operated to the fixed position when being operated to the releasing position from the stopper section with regard to entering that the stopper section enters the hole.Spring assembly has and enters the stopper section in the stopper section and enter the Kong Shixiang plug and give given intake resistance with handle, and enters when withdrawing from the hole from the stopper section in the stopper section and to give the given main spring portion that withdraws from resistance to plug with handle.

So, owing to constitute spring assembly dividually with handle with plug, so the degree of freedom height that manufactures and designs of spring assembly.Thus, just can easily obtain to have the required good spring assembly aspect durability that withdraws from resistance.In addition, enter hole or plug with on the handle because spring assembly is remained on the stopper section by on-fixed ground, rather than, therefore just be difficult to produce the excessive stress or the eccentric wear damage that cause by fixing combination by combination regularly.Thus, just can further improve durability.In addition, enter hole or plug with in the handle time spring assembly being installed in the stopper section,, therefore can omit operations such as riveted joint, thus, just can suppress manufacturing cost lower owing to do not need combination regularly.

That is, can realize possessing and not only can easily obtain required latching force, and latching force is difficult to reduce and the plug of low cost of manufacture with the board unit of the locked configuration of handle.

In the board unit of the present invention, base main body is disposed with the plug direction almost parallel ground of board unit with respect to the substrate reception framework.Panel body possesses by with respect to the side panel of the approximate almost plane shape of configuration abreast of base main body, the front panel of the almost plane shape that forms to the direction with plug direction approximate vertical of the front end of extracting direction of the plug direction of plate from the side with holding up.The stopper section enters the hole and runs through front panel and be provided with.The bar portion that plug also possesses the base portion that can be supported on rotatably on the panel body, is provided with continuously with base portion with handle.The framework joint portion is formed continuously with base portion.The stopper section is formed at bar portion midway.Operating portion is formed at the other end of bar portion.In fact base portion is configured in the inboard of front panel.Bar portion when operating portion is in a fixed position, be positioned at the outside of front panel and become with front panel near and the state of almost parallel is at operating portion and is positioned at the outside of front panel when removing the position and becomes with respect to the approximate state of holding up of front panel.The stopper section is positioned at the inboard of front panel when operating portion is in a fixed position, be positioned at the outside of front panel when operating portion is in the releasing position.Main spring portion when operating portion is in a fixed position, is positioned at the inboard of front panel at least.

So, under the state that plug is in a fixed position with the operating portion of handle, that is, be in board unit and be contained under the common user mode that is fixed in the substrate reception framework, just can reduce the projecting height laterally of the front panel that plugs the usefulness handle.Thus, the substrate reception framework of having taken in this kind board unit by use just can be under user mode usually, realizes the e-machine assembly of the compactness that the size (for example depth size) of described plug direction is less etc.

In the board unit of the present invention, it is characterized in that stopper section and the main spring portion gap that be arranged in base main body and side panel of plug with the base portion of handle and when operating portion is in a fixed position at least.

So, just can with plug with the base portion of handle and the stopper section when operating portion is in a fixed position at least and main spring portion be defined in this base main body and side panel in the perspective plane of the direction vertical with this base main body and side panel.Thus, just can be under common user mode, realize the e-machine assembly of the compactness that the size (for example depth size) of described plug direction is minimum etc.

In the board unit of the present invention, it is characterized in that also possessing the force application mechanism of to the direction of removing the position rotation plug being used the handle application of force from the fixed position with the operating portion of handle to plugging.

So, when board unit is inserted or extracts with respect to the substrate reception framework, contact with the framework joint portion of plug with handle by preventing the substrate reception framework, just can easily carry out the Plug Action of board unit.

In the board unit of the present invention, spring assembly is maintained at the stopper section and enters in the hole.Main spring portion enters Kong Shiyu stopper section contact and is out of shape and produces intake resistance by enter the stopper section in the stopper section, and enters when withdrawing from the hole from the stopper section in the stopper section and to withdraw from resistance by contacting with the stopper section to be out of shape to produce.Spring assembly also possesses as what combine with the stopper section with entering the hole on-fixed and enters the joint portion, hole, this enters the joint portion, hole and is entered the Kong Shiyu stopper section and enter between the hole and to break away from resistance when producing greater than the entering of described intake resistance according to enter the stopper section in the stopper section, and enter from the stopper section in the stopper section when withdrawing from the hole and the stopper section enter to produce between the hole and constitute greater than the described mode that breaks away from resistance when withdrawing from the withdrawing from of resistance.

Promptly, this enters the joint portion, hole the spring assembly utilization, combines with the stopper section of panel body, no matter when plug enters the hole with the stopper section of the stopper section entering surface plate body of handle with entering the hole on-fixed, still the stopper section enters from the stopper section when withdrawing from the hole, can keep this combination.

In the board unit of the present invention, it is characterized in that spring assembly is to use the plate-shaped springs member with main spring portion with enter the member that make the joint portion, hole integratedly.

For example, this kind spring assembly also possesses with the stopper section and enters the bridge formation portion of the approximately perpendicular section of exit axis for approximate " コ " font that enter in the hole to the stopper section, and this bridge formation portion is by the bridge formation plate, constitutes along the sheet of holding up that forms continuously with approximately perpendicular direction of bridge formation plate and bridge formation plate respectively from the two ends of bridge formation plate.Entering the joint portion, hole is formed extended at both sides a pair of to the slight inclination direction according to a pair of exit axis end of holding up sheet from bridge formation portion towards the mode that this exit axis is separated from each other separately.Main spring portion is approximate " U " font according to a pair of approach axis end of holding up sheet from bridge formation portion along close mutually direction warpage, and the mode of extending towards exit axis separately forms a pair of.

Perhaps, for example this kind spring assembly also possesses with the stopper section and enters the bridge formation portion of the approximately perpendicular section of exit axis for approximate " コ " font that enter in hole to the stopper section, and this bridge formation portion is by the bridge formation plate, constitutes along the sheet of holding up that forms continuously with approximately perpendicular direction of bridge formation plate and bridge formation plate respectively from the two ends of bridge formation plate.Entering the joint portion, hole is formed extended at both sides a pair of to the slight inclination direction according to a pair of exit axis end of holding up sheet from bridge formation portion towards the mode that this exit axis is separated from each other separately.Main spring portion be approximate " U " font a pair of entering between the joint portion, hole by warpage, and the mode of extending towards exit axis is formed by according to the approach axis end of holding up sheet of only holding up the side in the middle of the sheet from bridge formation portion a pair of.

So, for example, just can easily obtain spring assembly by metallic plate being implemented stamping-out processing and bending machining.

In the board unit of the present invention, spring assembly is maintained at plug with near the stopper section of handle.Main spring portion enters EDGE CONTACT that the Kong Shiyu stopper section enters the hole and is out of shape and produces intake resistance by enter the stopper section in the stopper section, and enters when withdrawing from the hole in the stopper section from the stopper section and the stopper section enters the EDGE CONTACT in hole and is out of shape to produce and withdraws from resistance.Spring assembly also possess with plug with the handle on-fixed the handle joint portion that combines, this handle joint portion is to enter and break away from resistance when Kong Shiyu plug produces between with handle greater than the entering of described intake resistance according to enter the stopper section in the stopper section, the stopper section enter from the stopper section withdraw from the hole Shi Zaiyu plug with handle between generation the mode of disengaging resistance constitutes when withdrawing from the withdrawing from of resistance greater than described.

Promptly, spring assembly utilizes this handle joint portion, near the stopper section with plug with the handle on-fixed combine, no matter plugging stopper section with the stopper section entering surface plate body of handle when entering the hole, still the stopper section enters from the stopper section when withdrawing from the hole, can keep this combination.

In the board unit of the present invention, it is characterized in that the member that spring assembly is to use the plate-shaped springs member that main spring portion and handle joint portion are made integratedly.

For example, the main spring portion of this kind spring assembly is made with the mountain peak shape that enters the approximately perpendicular crest line of exit axis that enters the hole with the stopper section to the stopper section.The handle joint portion possesses the 1st hook portion and the 2nd hook portion, wherein the 1st hook portion forms towards this approach axis continuously from the foot of the hill portion of the approach axis side of main spring portion, and its head end turns back roughly " コ " font, stops spring assembly to use handle moving to exit axis with respect to plug; The 2nd hook portion forms towards this exit axis continuously from the foot of the hill portion of the exit axis side of main spring portion, and its head end turns back and the 1st hook portion rightabout roughly " コ " font, stop spring assembly with respect to plug with handle moving to approach axis.

In the described discussion, though adopt preferred implementation to describe the present invention, each term does not use for qualification, but use in order to describe, only otherwise depart from the scope of the present invention and spirit, in the scope of additional technical scheme, can change.In addition, in the described discussion, though several typical embodiment of the present invention have been carried out detailed record, but as long as those skilled in the art, will readily recognize that: can not break away from technology instruction of the present invention and advantage, in described typical embodiment, realize a lot of changes.So this kind change all is contained in the scope of the present invention.

Claims

1. a board unit is the board unit that can be installed in the substrate reception framework with plugging, it is characterized in that possessing:

Base main body;

Supporting substrate main body and be provided with the panel body that the stopper section enters the hole regularly;

Can be supported in the plug handle on the panel body rotatably, this plug possesses operating portion with handle, framework joint portion and stopper section, wherein said framework joint portion is constituted as: when operating portion is rotated when being operated to given fixed position, its part with the substrate reception framework combines, and be rotated when being operated to given releasing position when operating portion, then remove and the combining of the described part of substrate reception framework, described stopper section is constituted as: when operating portion is rotated when being operated to the fixed position, it enters the stopper section and enters the hole, and be operated to when removing the position when operating portion is rotated, then enter and withdraw from the hole from the stopper section; And

Spring assembly, this spring assembly by on-fixed remain on the stopper section and enter hole and plug with on any one party in the handle, and has a main spring portion, when wherein said main spring portion enters the stopper section in the stopper section and enters the hole, give given intake resistance to plug with handle, and enter when withdrawing from the hole from the stopper section in the stopper section, give the given resistance that withdraws from handle to plug.

2. board unit according to claim 1 is characterized in that,

Described base main body and described board unit dispose with respect to the plug direction almost parallel ground of described substrate reception framework,

Described panel body possesses:

By side panel with respect to the approximate almost plane shape that disposes abreast of described base main body; And

The front panel of extracting the almost plane shape that the direction end forms to the direction with described plug direction approximate vertical with holding up of the described plug direction of plate from the side,

Described stopper section enters the hole and is provided with according to the mode that runs through described front panel,

Described plug also possesses with handle: the bar portion that can be supported on the base portion on the panel body rotatably and be provided with continuously with base portion,

Described framework joint portion and base portion form continuously,

Described stopper section is formed at the centre of bar portion,

Described operating portion is formed at the other end of bar portion,

In fact base portion is configured in the inboard of front panel,

Bar portion when operating portion is in described fixed position, be positioned at the outside of front panel and become with front panel near and the state of almost parallel is positioned at the outside of front panel and becomes with respect to the approximate state of holding up of front panel when operating portion is in described releasing position,

The stopper section is positioned at the inboard of front panel when operating portion is in described fixed position, be positioned at the outside of front panel when operating portion is in described releasing position,

Described main spring portion when operating portion is in described fixed position, is positioned at the inboard of front panel at least.

3. board unit according to claim 2, it is characterized in that described stopper section when described plug is in described fixed position with the described base portion of handle and described at least operating portion and described main spring portion are arranged in the gap of described base main body and described side panel.

4. board unit according to claim 1 is characterized in that, also possesses the force application mechanism of to the direction of removing the position rotation plug being used the handle application of force to described plug with the described operating portion of handle from the fixed position.

5. board unit according to claim 1 is characterized in that,

Described spring assembly is maintained at described stopper section and enters in the hole,

Described main spring portion enters the contact of Kong Shiyu stopper section and is out of shape and produces described intake resistance by enter the stopper section in described stopper section, and enters when withdrawing from the hole from the stopper section in the stopper section and to produce the described resistance that withdraws from by contacting with the stopper section to be out of shape,

Described spring assembly also possesses with the stopper section combines with entering the hole on-fixed and enters the joint portion, hole, this enters the joint portion, hole and is constituted as: enter the stopper section in the stopper section and enter the Kong Shiyu stopper section and enter between the hole when producing and break away from resistance greater than the entering of described intake resistance, and enter from the stopper section in the stopper section when withdrawing from the hole and the stopper section enter and produce between the hole greater than the described resistance that breaks away from when withdrawing from the withdrawing from of resistance.

6. board unit according to claim 5 is characterized in that, described spring assembly is to use the plate-shaped springs member with described main spring portion with enter the member that make the joint portion, hole integratedly.

7. board unit according to claim 1 is characterized in that, described spring assembly is maintained at described plug with near the described stopper section of handle,

Described main spring portion enters EDGE CONTACT that the Kong Shiyu stopper section enters the hole and is out of shape and produces described intake resistance by enter the stopper section in described stopper section, and enter when withdrawing from the hole in the stopper section from the stopper section and the stopper section enters the EDGE CONTACT in hole and is out of shape and produces the described resistance that withdraws from

Described spring assembly also possess with plug with the handle on-fixed the handle joint portion that combines, this handle joint portion is constituted as: when the stopper section enters the stopper section and enters the hole and plug break away from resistance when producing between with handle greater than the entering of described intake resistance, the stopper section enter from the stopper section withdraw from the hole Shi Zaiyu plug with handle between generation greater than described disengaging resistance when withdrawing from the withdrawing from of resistance.

8. board unit according to claim 7 is characterized in that, the member that described spring assembly is to use the plate-shaped springs member that described main spring portion and described handle joint portion are made integratedly.

9. board unit according to claim 2 is characterized in that described spring assembly is maintained at described stopper section and enters in the hole,

10. board unit according to claim 9 is characterized in that, described spring assembly is to use the plate-shaped springs member with described main spring portion with enter the member that make the joint portion, hole integratedly.

11. board unit according to claim 2 is characterized in that, described spring assembly is maintained at described plug with near the described stopper section of handle,

12. board unit according to claim 11 is characterized in that, the member that described spring assembly is to use the plate-shaped springs member that described main spring portion and described handle joint portion are made integratedly.

13. board unit according to claim 3 is characterized in that, described spring assembly is maintained at described stopper section and enters in the hole,

14. board unit according to claim 13 is characterized in that, described spring assembly is to use the plate-shaped springs member with described main spring portion with enter the member that make the joint portion, hole integratedly.

15. board unit according to claim 3 is characterized in that, described spring assembly is maintained at described plug with near the described stopper section of handle,

16. board unit according to claim 15 is characterized in that, the member that described spring assembly is to use the plate-shaped springs member that described main spring portion and described handle joint portion are made integratedly.

17. board unit according to claim 4 is characterized in that, described spring assembly is maintained at described stopper section and enters in the hole,

18. board unit according to claim 17 is characterized in that, described spring assembly is to use the plate-shaped springs member with described main spring portion with enter the member that make the joint portion, hole integratedly.

19. board unit according to claim 4 is characterized in that, described spring assembly is maintained at described plug with near the described stopper section of handle,

20. board unit according to claim 19 is characterized in that, the member that described spring assembly is to use the plate-shaped springs member that described main spring portion and described handle joint portion are made integratedly.