CN208157076U - Medical Instruments and its casing assembly - Google Patents

Abstract

A kind of casing assembly, including rack, top cover, front cover and side cover, top cover and front cover are covered on the top surface and front of rack respectively, and the upper end and front end of side cover are connected in top cover and the front cover and are formed from top respectively supports limit cooperation, and side cover is covered in the side of rack and is firmly connected with it.Side cover is clamped from top and top cover and front cover respectively, and limit cooperation is respectively formed with top cover and front cover, and the side cover is fixedly connected with rack, to top cover, front cover and side cover were both connected with rack respectively, also there is association in structure, mutually limit, after side cover need to be only respectively aligned to the corresponding clamping position of front cover and top cover in assembly, sliding down by gravity can be realized three while cooperating, avoid widening or reducing in the case where three's structure onrelevant mutual gap that may be present, therefore not only assembly method is simple for the structure, it is easy to position, also avoid the problem that each panel gap consistency is bad and the exposed influence of screw is beautiful in traditional assembly method.

Description

Medical Instruments and its casing assembly

Technical field

The utility model belongs to the field of medical instrument technology, is to be related to a kind of Medical Instruments and its shell more specifically Component.

Background technique

Medical Instruments currently on the market, the assembly of shell mostly use screw that each housing face-plate is individually fixed on machine Mode on frame is assembled so that rare related peace assembly constraint between each panel part of the shell of Medical Instruments, when rack, When side plate or side plate have the part of clearance fit relationship to have a small amount of deformation, then make the clearance fit consistency between part It is poor, appearance profile impacted；On the other hand, inevitably there is part screw exposed using above-mentioned screw mounting means, shadow Beauty is rung, and assembly efficiency is low, has drawn high production cost indirectly.

Utility model content

The purpose of this utility model is to provide a kind of casing assemblies, and to solve, the installation of shell is deposited together in the prior art Gap consistency is poor, screw is exposed and assembly efficiency is low technical problem.

To achieve the above object, the technical solution adopted in the utility model is：A kind of casing assembly, including rack are provided, The casing assembly further includes top cover, front cover and side cover, and the top cover and front cover are covered on the top surface of the rack with before respectively Face, the upper end and front end of the side cover are connected in the cap edge and the front cover edge and are formed and support from top respectively Top limit cooperation, the side cover are covered in the side of the rack and are firmly connected with it.

Further, the top cover, the front cover and the side cover have mutually been enclosed accommodating cavity, the shell Component further includes the screw for being fixedly connected with the rack with the side cover from the accommodating cavity inside.

Further, the first card hole is offered on the top cover, the side cover includes side plate, and bending is connected to the side First connector of plate upper end, and the first latching tooth for being convexly equipped in first connector and extending straight down, described One latch be inserted from above into first card hole and with first connector formation support limit cooperation.

Further, the front cover includes lid main body, and bending is connected to lid main body one end and offers the second card hole The second connector, the side cover further includes the second latch for being convexly equipped in the front end of the side plate, and second latch is from upper Side is inserted in second card hole and supports limit cooperation with side plate formation.

Further, second card hole includes the first wedge shaped aperture of lower end, and is set under first aperture Side and the second aperture for being connected thereto and being connected to, the size in first aperture is more described, and first aperture is bigger.

Further, second latch includes the first teeth portion for being convexly equipped in the front end of the side plate, and bending connects The second teeth portion for being connected to first teeth portion and extending vertically downwards, second teeth portion are inserted from above into described Limit cooperation is supported in two apertures and with second connector formation.

Further, the casing assembly further includes the interface board for being fixedly connected on the rack, is opened up on the side plate There are through-hole, the interface board and the through-hole face.

Further, the side cover further includes projection on the side plate and is located at first convex in the accommodating cavity It rises, first protrusion has extension along the vertical direction and downward opening first card slot, the top of the interface board are inserted in It is convexed to form in first card slot and with described first and supports limit cooperation.

Further, the rack includes the upper side plate being fixedly connected respectively with the top cover and the front cover and side Plate, the intermediate plate for being connected to the upper side plate and the side board and being connect with the side plate screw, and with the side The lower side plate that side plate is fixedly connected；The side cover further includes projection on the side plate and is located at second accommodated in cavity Protrusion, second protrusion have extension and downward opening second card slot along the vertical direction, the top insertion of the lower side plate Limit cooperation is supported in convexing to form in second card slot and with described second.

The utility model additionally provides a kind of Medical Instruments, and the Medical Instruments includes above-mentioned casing assembly.

Medical Instruments provided by the utility model and its beneficial effect of casing assembly are：Compared with prior art, originally Utility model casing assembly is clamped respectively from top and top cover and front cover by side cover, and is respectively formed limit with top cover and front cover Position cooperation, and the side cover is fixedly connected with rack, so that top cover, front cover and side cover are both connected with rack respectively, also in structure On have association, mutually limit, assembly when, it is only necessary to after side cover to be respectively aligned to the corresponding clamping position of front cover and top cover, Sliding down by gravity can be realized three while cooperating, and avoid the phase that may be present in the case where three's structure onrelevant Mutual gap widens or reduces, therefore not only assembly method is simple for the structure, is easy to position, it is thus also avoided that each in traditional assembly method Panel gap consistency is bad and screw is exposed influences beautiful problem.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the assembling structure schematic diagram of casing assembly provided by the embodiment of the utility model；

Fig. 2 is the structural schematic diagram of the side cover of casing assembly provided by the embodiment of the utility model；

Fig. 3 is the enlarged structure schematic diagram of part A in Fig. 2；

Fig. 4 be casing assembly provided by the embodiment of the utility model be assemble side cover when structural schematic diagram；

Fig. 5 is the enlarged structure schematic diagram of part B in Fig. 4；

Fig. 6 is the enlarged structure schematic diagram of C portion in Fig. 4；

Fig. 7 is P-P schematic cross-section in Fig. 1；

Fig. 8 is the enlarged structure schematic diagram of the part D in Fig. 7；

Fig. 9 is the enlarged structure schematic diagram of the part E in Fig. 7；

Wherein, each appended drawing reference in figure：

10- rack；The upper side plate of 11-；12- side board；13- intermediate plate；Side plate under 14-；20- top cover；The first card hole of 21-； 30- front cover；31- lid main body；The second connector of 32-；321- connection main body；322- connecting plate；The second card hole of 33-；331- first Aperture；The second aperture 332-；40- side cover；41- side plate；The first connector of 42-；43- first latching tooth；The second latch of 44-；441- First teeth portion；The second teeth portion of 442-；The first protrusion of 45-；The first card slot of 451-；The second protrusion of 46-；The second card slot of 461-；50- connects Oralia；M- connection bump；H- accommodates cavity；S- through-hole.

Specific embodiment

In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.

It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or indirectly on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.

It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation based on the figure or position are closed System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

Also referring to Fig. 1 and Fig. 7 to 9, now casing assembly provided by the utility model is illustrated.Casing assembly, Including rack 10, casing assembly further includes top cover 20, front cover 30 and side cover 40, and top cover 20 and front cover 30 are covered on rack 10 respectively Top surface and front, the upper end and front end of side cover 40 are connected in the edge of top cover 20 and the edge of front cover 30 from top respectively And it is formed and supports limit cooperation, and side cover 40 covers the side of rack 10 and is firmly connected with it.In the present embodiment, top cover 20, front cover 30 should be set in rack 10 respectively, and side cover 40 is used to cover another face of rack 10, which passes through card first Cooperation and contacting on 40 recurring structure of front cover 30 and side cover are connect, and the side cover 40 blocks with top cover 20 and front cover 30 respectively from top Connect, i.e., side cover 40 only need to from top clamping position alignment corresponding to front cover 30, then make its by gravity slide down to The top cover 20 is clamped and the limit cooperation formed vertically downwards similarly cooperates in side cover 40 with top cover 20 same When, side cover 40 and top cover 20 also cooperates completion, due to the upper end of side cover 40 and front end and respectively with front cover 30 and side cover 40 Calibration while being clamped, therefore can realize both vertically as well as horizontally cooperation is at correct rigging position, and then guarantees top cover 20, the gap cooperated between side cover 40 and front cover 30 is consistent.

Casing assembly provided by the utility model, compared with prior art, by side cover 40 respectively from top and top cover 20 It is clamped with front cover 30, and is respectively formed limit cooperation with top cover 20 and front cover 30, and the side cover 40 is fixedly connected with rack 10, To which top cover 20, front cover 30 and side cover 40 were both connected with rack 10 respectively, also there is association in structure, mutually limits, filling Timing, it is only necessary to after side cover 40 to be respectively aligned to the corresponding clamping position of front cover 30 and top cover 20, be slided down by gravity and be Three can be achieved to cooperate simultaneously, avoid widening or contracting in the case where three's structure onrelevant mutual gap that may be present It is small, therefore not only assembly method is simple for the structure, is easy to position, it is thus also avoided that each panel gap consistency is not in traditional assembly method Good and screw is exposed to influence beautiful problem.

Further, referring to Fig. 1, a kind of specific embodiment as casing assembly provided by the utility model, top Lid 20, front cover 30 and side cover 40 have mutually been enclosed accommodating cavity H, and casing assembly further includes for emptying in chamber H calmly The screw (not shown) that rack 10 is fixedly connected by portion with side cover 40.Here, it is convexly equipped on the inner wall of side cover 40 with screw thread The connection bump M of blind hole (figure do not mark), screw in the inside of accommodating cavity H, across rack 10 intermediate plate 13 and be deep into this It is screwed in tapped blind hole, so that rack 10 is fixedly connected with side cover 40, and then limits the freedom degree of 40 all directions of side cover, So that casing assembly structure provided by the utility model is more firm.

Further, Fig. 2 to Fig. 5 and Fig. 7 is please referred to, one kind as casing assembly provided by the utility model is specific Embodiment offers the first card hole 21 on top cover 20, and side cover 40 includes side plate 41, and bending is connected to 41 upper end of side plate First connector 42, and be convexly equipped on the first connector 42 and along the first latching tooth 43 extended straight down, first latching tooth 43 Be inserted from above into the first card hole 21 and with the first connector 42 formation support limit cooperation.Specifically, first latching tooth 43 is solid On the first connector 42 that bending is connected to 41 upper end of side plate, and it extends vertically downwards, herein, the first card Tooth 43 is in rectangular plate-like shape, and the first card hole 21 is greater than the strip of the rectangle latch, the first latching tooth 43 and side plate 41 in length Parallel, when first latching tooth 43 is inserted into first card hole 21, i.e. the cooperation of side cover 40 and top cover 20 in the vertical direction is completed, At the same time, which is also in clamped condition from top and front cover 30, therefore the clamping of side cover 40 and front cover 30 defines side The freedom degree of lid 40 in the lateral direction, thus realize its downwards, the limit cooperation in three directions such as to the left and to the right；And due to Gravity, under the premise of entire casing assembly is not squeezed, which is not present the risk slipped upwards, and just It is to pass through side cover 40 also more laborsaving when first latching tooth 43 is clamped from top with first card hole 21 due to gravity；Separately Outside, the structure connecting rack 10 with side cover 40 in conjunction with above-mentioned screw, further a possibility that slippage that side cover 40 is upward, also disappears It removes, so that entire casing assembly is relatively reliable.Certainly, in the other embodiments of the utility model, the size of the first card hole 21 Being subject to can satisfy first latching tooth 43 and can be inserted from above into first card hole 21, not limit uniquely herein.It can be with Understand, the quantity of first latching tooth 43 and the first card hole 21 can be respectively one or more, and the quantity of the two is mutually suitable Match, does not limit uniquely herein.

Further, Fig. 4, Fig. 7 and Fig. 9 are please referred to, a kind of specific reality as casing assembly provided by the utility model Mode is applied, front cover 30 includes lid main body 31, and bending is connected to 31 one end of lid main body and offers the second connection of the second card hole 33 Body 32, side cover 40 further include the second latch 44 for being convexly equipped in the front end of side plate 41, and the second latch 44 is inserted from above into second Limit cooperation is supported in card hole 33 and with the formation of side plate 41.Here the second connector 32 includes before bending is connected to lid main body 31 1 The connection main body 321 of end, and the second card hole is offered set on 321 one end of connection main body and in side plate 41 is disposed in parallel 33 connecting plate 322, which is in inverted " L " type plate-like piece, after first latching tooth 43 is aligned with the first card hole 21, It adjusts the second latch 44 to protrude into the second card hole 33, that is, completes alignment work both vertically as well as horizontally, then unclamp side cover 40, Then the first latching tooth 43 is inserted into the first card hole 21, and at the same time, the second latch 44 is moved downward in the second card hole 33, until with The lower edge of second card hole 33 is mutually supported to form limit cooperation.It is understood that the second latch 44 and the second card hole 33 Quantity can be respectively one or more, and the quantity of the two is mutually adapted, and is not limited uniquely herein.

Further, Fig. 2, Fig. 7 and Fig. 9 are please referred to, a kind of specific reality as casing assembly provided by the utility model Mode is applied, the second card hole 33 includes the first wedge shaped aperture 331 of lower end, and is connected set on 331 lower section of the first aperture and with it The size in the second aperture 332 for connecing and being connected to, the first aperture 331 is bigger compared with the second aperture 332.Here, the work in the first aperture 331 With being to enable the second latch 44 not connecting plate 322 with the second connector 32 when first latching tooth 43 is aligned with the first card hole 21 It interferes, while be also at the second latch 44 to support the position of cooperation with the second connector 32 Yi Dan gliding；The The width in two apertures 332 is suitable with the thickness of the second latch 44, and the width in the first aperture 331 is greater than the width in the second aperture 332 Degree, so that the second latch 44 can be easily inserted into first aperture 331 very much, and movable in the first aperture 331, when When second latch 44 slides down to the second aperture 332 under the effect of gravity, due to width and its mouthful of degree phase in the second aperture 332 When, therefore the freedom degree of the second latch 44 in the lateral direction is limited, so that side cover 40 and 30 accurate fit of front cover.This In, the lower end in the first aperture 331 is wedge shaped, and lozenges extends to the upper end in the second aperture 332, consequently facilitating the second latch 44 The second aperture 332 is smoothly slid into from the first aperture 331；And the wedge shape also can be replaced arc-shaped etc. can guarantee the second latch 44 smoothly slide into the other shapes in the second aperture 332 from the first aperture 331, do not limit uniquely herein.

Further, Fig. 2, Fig. 3, Fig. 7 and Fig. 9 are please referred to, a kind of tool as casing assembly provided by the utility model Body embodiment, the second latch 44 include the first teeth portion 441 for being convexly equipped in 41 front end of side plate, and bending is connected to the first tooth Portion 441 and the second teeth portion 442 extended vertically downwards, the second teeth portion 442 be inserted from above into the second aperture 332 simultaneously Limit cooperation is supported with the formation of the second connector 32.Specifically, the first teeth portion 441 protrudes from 41 plane of side plate and extends outwardly, Second teeth portion 442 is connected to one end of the separate side plate 41 of the first teeth portion 441, and perpendicular along the direction that 41 plane of side plate extends Directly extend downwardly, thus, the first teeth portion 441 connect jointly with the second teeth portion 442 and forms inverted " L " type plate-like piece；When One latch 43 is aligned with the first card hole 21, and the second teeth portion 442 passes through the first aperture 331 and comes in accommodating cavity H, the first teeth portion 441 place oneself in the midst of inside the first aperture 331；When first latching tooth 43 is inserted in the first card hole 21 from top to bottom, 441 He of the first teeth portion Second teeth portion 442 glides simultaneously, until the first teeth portion 441 is from the lower edge that top is resisted against the second aperture 332, the second teeth portion 442 cross the second aperture 332 and the connecting plate 322 of the second connector 32 is engaged.

Further, Fig. 1, Fig. 2, Fig. 4, Fig. 7 are please referred to, one kind as casing assembly provided by the utility model is specific Embodiment, casing assembly further include the interface board 50 for being fixedly connected on rack 10, offer through-hole S, interface board on side plate 41 50 with through-hole S face.Interface board 50 is mainly used for connection and is located at the accommodating inside and outside circuit of cavity H, in the present embodiment, should Interface board 50 is in rectangle, and adjacent both sides empty be connected with rack 10 by screw inside chamber H calmly, offer on side plate 41 Through-hole S for keeping the interface board 50 exposed, through-hole S is also in rectangle, is faced with the position of interface board 50.Certainly in this reality With in novel other embodiments, the size of the concrete shape of above-mentioned interface board 50, and be connected to rack 10 position view it is real Depending on the demand of border, do not limit uniquely herein.

Further, Fig. 2 and Fig. 7 are please referred to, a kind of specific embodiment party as casing assembly provided by the utility model Formula, side cover 40 further include the first protrusion 45 for being convexly equipped on side plate 41 and being located in accommodating cavity H, and the first protrusion 45 has along perpendicular Histogram to extending and downward opening first card slot 451, the top of interface board 50 be inserted in the first card slot 451 and with it is first convex It plays 45 and is formed to support to limit and cooperate.In the present embodiment, which is to be inverted " L " type in section, is had opening down And the first card slot 451 extended along the vertical direction, then the first card hole 21 is respectively aligned in first latching tooth 43 and the second latch 44 When with the second card hole 33, the top of the interface board 50 is also directed at first card slot 451, when side cover 40 glide, first latching tooth 43 with Second latch 44 is inserted in respectively in the first card hole 21 and the second card hole 33, which is also snapped down to interface board therewith 50 top extend into 451 inside of the first card slot and supports cooperation with first protrusion 45, in this way, can not only increase side cover 40 The accuracy cooperated with top cover 20 and front cover 30, additionally it is possible to which the load-bearing burden for mitigating first latching tooth 43 increases entire shell indirectly The service life of component.

Further, Fig. 4 and Fig. 7 are please referred to, a kind of specific embodiment party as casing assembly provided by the utility model Formula, rack 10 include the upper side plate 11 and side board 12 being fixedly connected respectively with top cover 20 and front cover 30, are connected to top Plate 11 and side board 12 and the intermediate plate 13 being connect with 41 screw of side plate, and the lower side plate being fixedly connected respectively with side board 12 14.Upper side plate 11, side board 12, intermediate plate 13 and lower side plate 14 erect a frame with certain support strength jointly, on State top cover 20, front cover 30 and side cover 40 respectively by screw empty calmly chamber H inside and the rack 10 it is connected.

Further, Fig. 2 and Fig. 7 are please referred to, a kind of specific embodiment party as casing assembly provided by the utility model Formula, side cover 40 further include the second protrusion 46 for being convexly equipped on side plate 41 and being located in accommodating cavity H, and the second protrusion 46 has along perpendicular Histogram to extending and downward opening second card slot 461, the top of lower side plate 14 be inserted in the second card slot 461 and with it is second convex It plays 46 and is formed to support to limit and cooperate.In the present embodiment, which is to be inverted " L " type in section, is had opening down And the second card slot 461 extended along the vertical direction, then the first card hole 21 is respectively aligned in first latching tooth 43 and the second latch 44 When with the second card hole 33, the top of the lower side plate 14 is also directed at second card slot 461, when side cover 40 glide, first latching tooth 43 with Second latch 44 is inserted in respectively in the first card hole 21 and the second card hole 33, which is also snapped down to lower side plate therewith 14 top extend into 461 inside of the second card slot and supports cooperation with second protrusion 46, in this way, can not only increase side cover 40 The accuracy cooperated with top cover 20 and front cover 30, additionally it is possible to mitigate the load-bearing burden of first latching tooth 43 and the second latch 44, indirectly Increase the service life of entire casing assembly.

Fig. 1 to Fig. 9 is please referred to, the utility model additionally provides a kind of Medical Instruments, which includes above-mentioned shell Component.

Medical Instruments provided by the utility model, compared with prior art, by using above-mentioned casing assembly, the shell group Part is clamped from top and top cover 20 and front cover 30 respectively by side cover 40, and is respectively formed limit with top cover 20 and front cover 30 and is matched It closes, and the side cover 40 is fixedly connected with rack 10, so that top cover 20, front cover 30 and side cover 40 are both connected with rack 10 respectively, Also there is association in structure, mutually limit, in assembly, it is only necessary to which side cover 40 is respectively aligned to the phase of front cover 30 and top cover 20 After position should being clamped, sliding down by gravity can be realized three while cooperating, and avoid three's structure onrelevant the case where Under mutual gap that may be present widen or reduce, therefore not only assembly method is simple for the structure, is easy to position, it is thus also avoided that passes Each panel gap consistency is bad and screw is exposed in assembly method of uniting influences beautiful problem.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Claims (10)

1. casing assembly, including rack, it is characterised in that：The casing assembly further includes top cover, front cover and side cover, the top cover It is covered on the top surface and front of the rack respectively with front cover, the upper end and front end of the side cover are connected in from top respectively The cap edge and the front cover edge and formed support limit cooperation, the side cover be covered in the side of the rack and with It is fixedly connected.

2. casing assembly as described in claim 1, it is characterised in that：The top cover, the front cover and the side cover are mutual Be enclosed accommodating cavity, the casing assembly further include for from the accommodating cavity inside by the rack and the side Cover the screw being fixedly connected.

3. casing assembly as claimed in claim 2, it is characterised in that：The first card hole, the side cover are offered on the top cover It include side plate, bending is connected to the first connector of the side plate upper end, and is convexly equipped in first connector and erects The first latching tooth directly extended downwardly, the first latching tooth be inserted from above into first card hole and with first connector Limit cooperation is supported in formation.

4. casing assembly as claimed in claim 3, it is characterised in that：The front cover includes lid main body, and bending is connected to described Lid main body one end and the second connector for offering the second card hole, the side cover further include the front end for being convexly equipped in the side plate Second latch, second latch be inserted from above into second card hole and with the side plate formation support limit cooperation.

5. casing assembly as claimed in claim 4, it is characterised in that：Second card hole includes the first wedge shaped hole of lower end Mouthful, and set on second aperture for the first aperture lower section and being connected thereto and being connected to, the size in first aperture is compared with institute It is bigger to state the first aperture.

6. casing assembly as claimed in claim 5, it is characterised in that：Second latch includes before being convexly equipped in the side plate First teeth portion of end, and the second teeth portion that bending is connected to first teeth portion and extends vertically downwards, it is described Second teeth portion be inserted from above into second aperture and with second connector formation support limit cooperation.

7. such as the described in any item casing assemblies of claim 3 to 6, it is characterised in that：The casing assembly further includes fixed company It is connected to the interface board of the rack, through-hole, the interface board and the through-hole face are offered on the side plate.

8. casing assembly as claimed in claim 7, it is characterised in that：The side cover further include projection on the side plate and position The first protrusion in the accommodating cavity, first protrusion have extension along the vertical direction and downward opening first card Slot, the top of the interface board, which is inserted in first card slot and convexes to form with described first, supports limit cooperation.

9. casing assembly as claimed in claim 7, it is characterised in that：The rack include respectively with the top cover and it is described before The upper side plate and side board being fixedly connected are covered, the upper side plate and the side board are connected to and is connected with the side plate screw The intermediate plate connect, and the lower side plate being fixedly connected with the side board；The side cover further include projection on the side plate and The second protrusion in the accommodating cavity, second protrusion have extension along the vertical direction and downward opening second card Slot, the top of the lower side plate, which is inserted in second card slot and convexes to form with described second, supports limit cooperation.

10. Medical Instruments, it is characterised in that：Including the described in any item casing assemblies of claim 1 to 9.