CN208709080U - A kind of broad-adjustable bed structure - Google Patents

Abstract

The utility model relates to a kind of broad-adjustable bed structures.The width of existing bed body cannot carry out any adjusting as needed, influence to use in different placement locations.This reality utility model includes bedstead, sparerib shelf, and sparerib shelf includes mobile jib, auxiliary bar, realizes that two main spans are adjusted by distance between adjusting adjacent auxiliary bar front of motor, auxiliary bar top surface forms smooth mattress supports face.User can carry out step-less adjustment according to width of the use demand to sparerib shelf, to match the mattress of support different in width, for user provide it is comfortable spacious and with the matched recreating facility that lies down of accommodation space, promote usage experience, user without enough buying bedstead and sparerib shelf because of number of users or spatial variations again, use cost is effectively reduced, furthermore, since sparerib shelf can support various width mattresses, enable the producer to improve production efficiency by simplifying product category, and then reduces production cost.

Description

A kind of broad-adjustable bed structure

Technical field

The utility model relates to household fields, and in particular to a kind of bed body.

Background technique

Now bed on the market generally comprise bedstead, the sparerib shelf being assemblied on bedstead and the bed being placed on sparerib shelf Pad, bedstead, sparerib shelf and mattress all have unified size, and formation convenient for assembly has both the bed for stablizing support and neat appearance. When choosing, people need enough to buy the bed of specific width according to itself use demand, and Consideration includes that user lies down and needs It asks and indoor placement space, in a certain range due to human body length, the bed of various sizes changes model on length dimension Enclose it is smaller, the dimensions of existing bed variation major embodiment on the width, the bed of existing structure have the following deficiencies: bedstead and The width dimensions of sparerib shelf be it is fixed, cannot arbitrarily be adjusted according to the demand of user, for user, enough bought When just need to carry out assessment consideration to subsequent use, when service condition or place to use change, need by enough again Buying just can solve, and increase use cost, cannot neatly adjust accordingly according to the actual situation, for manufacturer Speech needs to provide the bedstead and sparerib shelf of various standard size dimensions for consumer, and needs to carry out the bed of each dimensions Reasonably scheduling of production increases production cost and management cost, is also easy to influence because the production switch of same production line produces Production efficiency.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a kind of broad-adjustable bed structure, passes through setting The broadening of foldable adjustment width adjusts component and realizes sparerib shelf width adjusting, both convenient for users to adjusting sparerib shelf as needed Width also reduces production cost by reducing specification type.

The utility model is accomplished by the following way: a kind of broad-adjustable bed structure, including bedstead and setting exist Sparerib shelf above bedstead, the sparerib shelf include mobile jib disposed in parallel and the adjusting that broadens being connected across between two mobile jibs each other Component, it is described to broaden that adjust component include that several head and the tail are sequentially connected and fold the auxiliary bar to form Z-shaped, pass through and adjusts adjacent auxiliary bar Distance realizes that two main spans are adjusted between front of motor, and the auxiliary bar top surface forms smooth mattress supports face.By sparerib shelf It is improved to can be adjusted according to the needs the structure of width by the structure that original counter-profile is fixed, user can be according to using need Ask and step-less adjustment carried out to the width of sparerib shelf, to match the mattress of support different in width, for user provide comfortable spaciousness and With the matched recreating facility that lies down of accommodation space, promote usage experience, user be not necessarily to because number of users or due to spatial variations again It is secondary enough to buy bedstead and sparerib shelf, use cost is effectively reduced, further, since sparerib shelf can support various width mattresses, so that The producer can improve production efficiency by simplifying product category, and then reduce production cost.The connecting pin of auxiliary bar and disconnected Relative position when end is for the connection of specific two auxiliary bar illustrates, can convert each other as special object changes, such as special When fixed auxiliary bar is connect by connecting pin with its auxiliary bar in left side, the front of motor of specific auxiliary bar can be converted into it and connect with the auxiliary bar in right side The connecting pin connect.Since the front of motor spacing of adjacent auxiliary bar can be adjusted arbitrarily, allow sparerib shelf width according to mattress Width is arbitrarily adjusted, and there is no influence degree of regulation because adjusting step by step.Due to being connected from beginning to end between auxiliary bar, so that auxiliary bar The structural strength of end enhances, and successfully manages the gravity from mattress and user, it is ensured that stablizes to mattress and supports.

Preferably, the auxiliary bar is even number root, positioned at broadening, the auxiliary bar for adjusting component two sides is connected to by end On the end in the same direction of corresponding mobile jib.Since auxiliary bar is connected by end, and the length of auxiliary bar remains constant, when sparerib shelf exists When wide by narrow side in width direction, auxiliary bar swing is tilting, so that projection of the auxiliary bar in bedstead width direction shortens, in order to prevent Occur two sides mobile jib because auxiliary bar is related be misaligned the case where, set even number root for auxiliary bar, broaden adjusting so that being located at Two auxiliary bars of component the extreme side pass through the front of motor not connecting with adjacent auxiliary bar and are connected on the end in the same direction of mobile jib, really Mobile jib is protected, projection of the mobile jib in bedstead width direction is overlapped.It is close that the end in the same direction of mobile jib refers to that auxiliary bar is both connected to mobile jib The first side end of bed or mobile jib are close to tailstock side end.

Preferably, the auxiliary bar and the isometric setting of the mobile jib.When sparerib shelf is in contraction state, auxiliary bar and mobile jib End flushes, both convenient transportation, moreover it is possible to be effectively ensured effectively support on bedstead length direction to mattress upon deployment.

Preferably, adjacent auxiliary bar is by adjusting folder by the shaft connection being vertically arranged between the corresponding connecting pin of adjacent auxiliary bar Distance is adjusted between adjacent auxiliary bar front of motor is realized in angle folding.Adjacent auxiliary bar can be swung centered on shaft, pass through adjusting Angle between two auxiliary bars controls the distance between corresponding front of motor, realizes that sparerib shelf width is adjusted.

Preferably, the auxiliary bar is the one-way flexible bar with horizontal direction deformation, the corresponding connecting pin of adjacent auxiliary bar is logical Cross that the fastener fitting extended transversely through is affixed, and the auxiliary bar realizes distance tune between adjacent auxiliary bar front of motor by self-deformation Section.The height in the auxiliary bar section be greater than width so that auxiliary bar have preferably resist vertical bending performance, be used to support mattress and The anti-lateral bending performance of user, auxiliary bar are weaker, realize auxiliary bar lateral flexibility convenient for users to stretching along bedstead width direction Deformation, and then by increasing the distance between corresponding front of motor, realize that sparerib shelf width is adjusted.

Preferably, the bedstead is equipped at least two support platforms being crossed between two mobile jibs, the auxiliary bar can be slided It is overlapped in continuous and smooth support platform dynamicly.Support platform both to sparerib shelf provide stablize support, also supplemented by bar provide Sliding guidance, when carrying out width adjustment, auxiliary bar bottom surface can be slided sparerib shelf along continuous and smooth support platform, Jin Erbao Distance is identical between demonstrate,proving the front of motor of adjacent auxiliary bar, prevents because auxiliary bar is by resistance to be slided the case where.

Preferably, the bedstead includes that width can match the support component adjusted, the support group with main span Part includes at least two frameworks that can plant overlapping, and linking is flushed between the framework top surface and forms the support platform, adjacent Framework is formed and the wide support platform of the sparerib shelf by telescopic adjustment.The width of support component can be according to sparerib shelf Width is adjusted, so that mobile jib and auxiliary bar can be supported by stablizing, framework is reduced or increased by mutually planting overlapping Support component width had both ensured and the wide setting of sparerib shelf, moreover it is possible to hide framework by mutually planting, it is ensured that outside support component Profile rule.

Preferably, the support platform end is tied with horizontal direction location structure, the positioning is equipped between corresponding mobile jib Structure includes that the positioning protrusion of support platform top surface is arranged in and is provided with mobile jib bottom surface and determines with what positioning protrusion was vertically nested with Position groove.Pass through location structure and realize that support component and sparerib shelf change width link, it is ensured that support platform width always with row The alignment of skeleton width, had both promoted the stability of strutting system of support platform, and had also made support component lateral wall and sparerib shelf lateral wall With alignment, aesthetics is promoted.

Preferably, the support component is two, and it is provided separately along the mobile jib length direction, the support component Telescopic adjustment direction be vertically arranged with the mobile jib length direction.Support component be two and respectively it is wide to perforation be arranged in Below stem of the sparerib shelf close to bed head and the tail portion close to tailstock, two support platforms are consequently formed.Support component is split, really It protects sparerib shelf and remains to held stationary posture when by vertical active force from mattress and user.

Preferably, being equipped with anticreep guide assembly between adjacent frame, the anti-drop assembly includes that setting is drawn frame is intracorporal Guide groove and the locating part that can be moved in guiding groove.Locating part, along preset path activity, both plays lead-frame in guiding groove The effect in body plug path, moreover it is possible to prevent framework from causing support platform the generation of the case where notch occur because over-travel is detached from.

Preferably, the support component includes the framework that two vertical projections are rectangle, the framework includes and master Bar end plate disposed in parallel, the side plate vertical with end plate and the cavity being enclosed by end plate and side plate, the framework phase The socket of perforation setting is equipped on the end plate at end, the cavity forms the guiding groove, and the end plate for opening up socket forms limit Position part, the framework is vertically nested with so that locating part in any framework and side plate connect with locating part distinguish it is movable Ground is inserted into guiding groove and socket in another framework, realizes two framework horizontal direction limit telescopics.Opposite end in two frameworks End plate plays the role of limiting disengaging each other.Socket is by playing the mobile effect of guidance framework with the cooperation of the side plate of plant.

The utility model has the beneficial effects that sparerib shelf is improved to by the structure that original counter-profile is fixed can be according to need The structure of adjustment width is wanted, user can carry out step-less adjustment according to width of the use demand to sparerib shelf, to match support The mattress of different in width, for user provide it is comfortable spacious and with the matched recreating facility that lies down of accommodation space, promoted and use body It testing, user is not necessarily to enough buy bedstead and sparerib shelf again because of number of users or spatial variations, use cost is effectively reduced, this Outside, since sparerib shelf can support various width mattresses, the producer is enabled to improve production efficiency by simplifying product category, And then reduce production cost.

Detailed description of the invention

Fig. 1 is the utility model structure diagram；

Fig. 2 is the utility model in overlooking structure diagram when being fully deployed；

Fig. 3 is overlooking structure diagram when the utility model is in local expansion；

Fig. 4 fit structure schematic diagram between framework；

Fig. 5 is framework and mobile jib assembling structure schematic diagram；

Fig. 6 is auxiliary bar attachment structure schematic diagram described in embodiment one；

Fig. 7 is auxiliary bar attachment structure schematic diagram described in embodiment two；

In figure: 1, sparerib shelf, 2, mobile jib, 3, auxiliary bar, 4, shaft, 5, fastener, 6, framework, 7, positioning protrusion, 8, positioning Groove, 9, guiding groove, 10, locating part, 11, side plate, 12, socket.

Specific embodiment

Make further with substantive distinguishing features of the specific embodiment to the utility model with reference to the accompanying drawings of the specification It is bright.

A kind of broad-adjustable bed structure as shown in Figure 1, by bedstead and 1 group of the sparerib shelf being arranged in above bedstead It include mobile jib 2 disposed in parallel and being connected across broadening between two mobile jibs 2 each other and adjusting component at, the sparerib shelf 1, the change Wide adjusting component includes that several head and the tail are sequentially connected and fold the auxiliary bar 3 to form Z-shaped, by adjusting adjacent auxiliary 3 front of motor of bar Between distance realize two mobile jibs 2 between distance adjust, auxiliary 3 top surface of bar forms smooth mattress supports face.

During installation, the corresponding end connection of auxiliary bar 3 adjacent with two sides respectively is sent out at the both ends of the auxiliary bar 3, so as to form The Z-shaped pliciform that can switch between unfolded state and rounding state.

When sparerib shelf 1 is in rounding state, adjacent auxiliary bar 3 is mutually drawn close, so that distance is minimum between two mobile jibs 2, at this point, Sparerib shelf 1 can support and the matched mattress of its width, moreover it is possible to convenient for collecting and transport.

When sparerib shelf 1 is switched to unfolded state by rounding state, adjacent auxiliary bar 3 is separated, and distance increases between mobile jib 2, is made User can according to bed set-down location space, use demand and mattress width etc. because usually adjust sparerib shelf 1 span (such as Fig. 2, Shown in 3), and then stablize and support corresponding mattress.

During installation, it is realized by following steps:

1. enabling support component to be the chop of expansion according to mattress or the width of placement location width adjustment support component Frame 1, which provides, stablizes support；

2. being broadened by the stretching realization of mobile jib 2 adjusts component expansion, auxiliary bar 3 is slided along support platform, and mobile jib 2 is by being set to The positioning groove 8 of its bottom surface is nested on corresponding positioning protrusion 7 (as shown in Figure 5), so that sparerib shelf 1 and support component are wide Setting；

3. mattress is placed on sparerib shelf 1, support component end face, 2 lateral wall of mobile jib and mattress side edge are vertically right Together.

Bed assembly is realized through the above steps, and in the actual operation process, first positioning groove 8 can be nested in convex It rises on 7, so that sparerib shelf 1 is adjusted with support component synchronization telescope in the direction of the width, is promoted and adjust convenience, also should be regarded as this The specific embodiment of utility model.

In actual operation, the auxiliary bar 3 is even number root, and positioned at broadening, the auxiliary bar 3 for adjusting component two sides passes through end It is connected on the end in the same direction of corresponding mobile jib 2, the auxiliary bar 3 and the isometric setting of the mobile jib 2.When auxiliary bar 3 is even number root, institute State and broaden that adjust component be in several V-arrangements for being arranged in juxtaposition, positioned at broaden adjust the auxiliary bar 3 in component two sides end with mobile jib 2 On end in the same direction.The end in the same direction of mobile jib 2 refers to mobile jib 2 close to the end of bed head or close to the end of tailstock.The mesh of this structure Be, when 1 width of sparerib shelf is adjusted, auxiliary bar 3 width can change to projected length, occur two mobile jibs 2 in order to prevent As auxiliary 3 end of bar of correspondence occurs the corresponding situation that is not parallel to each other because moving synchronously, sparerib shelf 1 is prevented to be formed as diamond shape, institute To need the end by auxiliary bar 3 to be connected on the end in the same direction of mobile jib 2, beginning when by auxiliary 3 active force of bar of mobile jib 2 is therefore ensured that Parallel each other and alignment posture is quoted eventually, had both ensured that 1 profile of sparerib shelf was regular, is also assured that mattress obtains and is stablized support.

In actual operation, the bedstead is equipped at least two support platforms being crossed between two mobile jibs 2, the auxiliary bar 3 are slideably overlapped in continuous and smooth support platform.The top surface of bedstead forms smooth and continuous support platform, support The width of platform can carry out any adjustment according to the width of mattress, and the bottom surface of auxiliary bar 3 slideably contradicts in support platform, Ensure that auxiliary bar 3 can provide stable support in any position of support platform for mattress.Preferred embodiment, two support platform difference The lower section of mattress stem and tail portion, and equal preset clearance between the two support platform and the head end and tail end of mattress are set, so that It broadens when adjusting component and shortening because broadening, support platform remains to play the role of stablizing support to sparerib shelf 1.Mattress stem is User region corresponding with human body head, mattress tail portion when lying down is instigated to refer to that user is corresponding with human leg when lying down Region.

In actual operation, horizontal direction location structure is equipped between the support platform end and corresponding mobile jib 2, it is described fixed Bit architecture includes that the positioning protrusion 7 of support platform top surface is arranged in and is provided with 2 bottom surface of mobile jib and vertically covers with positioning protrusion 7 The positioning groove 8 set.The positioning protrusion 7 and 8 quantity of positioning groove that single group location structure includes are corresponding, and particular number can basis Support platform size and convex cross section size are set, it is ensured that the variation synchronous with bedstead width direction of sparerib shelf 1.

In actual operation, the bedstead includes that width distance can match the support component adjusted, the branch between mobile jib 2 Support component includes at least two frameworks 6 that can plant overlapping, and linking is flushed between 6 top surface of framework and forms the support and is put down Platform, adjacent frame 6 are formed and the wide support platform of the sparerib shelf 1 by telescopic adjustment.The quantity of the support component can To be adjusted setting according to the actual situation, and match with bedstead width adjusting range, includes but are not limited to following several Structure:

Structure one, support component include two framework 6(being mutually inserted as shown in Figure 4), pass through two 6 phase interfix of framework The effect of support component width adjusting is picked up, the width lower limit of bedstead is the larger value of two frameworks, 6 width, it is ensured that another framework 6 can be hidden in the framework 6 of longer width, and the width upper limit of bedstead is the sum of two frameworks, 6 width.

Structure two, support component is three, described including main frame and when being telescopically disposed in the frame of main frame two sides Frame can be hidden in the both sides of main frame, and the width lower limit of bedstead is main width of frame, and the width upper limit of bedstead is main frame and side The sum of width of frame.

Structure three, support component include three successively socket and isometric frameworks 6, and framework 6 can be inserted into one by one adjoins in the same direction In framework 6, the width lower limit of bedstead is 6 width of any frame body, and effectively ensures that remaining framework 6 can be hidden in adjacent frame 6, The width upper limit of bedstead is the sum of three frameworks, 6 width.

In actual practice it is preferred to scheme, the support component is two, and is separately set along 2 length direction of mobile jib It sets, the telescopic adjustment direction of the support component is vertically arranged with 2 length direction of mobile jib.

In actual operation, anticreep guide assembly is equipped between adjacent frame 6, the anti-drop assembly includes being arranged in framework 6 Interior guiding groove 9 and the locating part 10 that can be moved in guiding groove 9, including various structures:

Structure one, the support component include the framework 6 that two vertical projections are rectangle, and the framework 6 includes and master The end plate disposed in parallel of bar 2, the side plate 11 vertical with end plate and the cavity being enclosed by end plate and side plate 11, the frame The socket 12 of perforation setting is equipped on the end plate that body 6 is held in opposite directions, the cavity forms the guiding groove 9, opens up socket 12 End plate forms locating part 10, and the framework 6 is vertically nested with, so that locating part 10 in any framework 6 and connecting with locating part 10 The side plate 11 connect is movably inserted into respectively in guiding groove 9 and socket 12 in another framework 6, realizes two frameworks, 6 horizontal direction limit Position is flexible.End plate opens up the socket 12 close to any 11 side of side plate, convenient for 11 grafting of side plate in another framework 6.

Structure two: support component includes outline border and inside casing, and outline border cross section is C-shaped, including end plate and is fixed in end Plate two sides and side plate 11 parallel each other, outline border one end have the opening for inside casing grafting.The side plate 11 is along its length Guiding groove 9 is opened up, inside casing lateral wall is equipped with limited block, and limited block is plugged in guiding groove 9, so that inside casing is within a preset range It is performed relative motion with outline border, and then realizes support component width adjusting.

Embodiment one:

As shown in fig. 6, being connected between the corresponding connecting pin of adjacent auxiliary bar 3 by the shaft 4 being vertically arranged, adjacent auxiliary bar 3 passes through tune It saves angle folding and realizes distance adjusting between adjacent auxiliary 3 front of motor of bar.Auxiliary bar 3 is the rigid posts with elastic-restoring force, adjacent Auxiliary bar 3 realizes that front of motor distance is arbitrarily adjusted by swinging,

In actual operation, the connecting pin of adjacent auxiliary bar 3 is mutually overlapping and is rotatablely connected by vertical shaft 4, adjacent auxiliary The sum of connecting pin height of bar 3 is identical as any auxiliary 3 miding level height of bar, and the overlapping rear locating height model in adjacent 3 connecting pin of auxiliary bar It encloses consistent with altitude range locating for any auxiliary 3 middle section of bar, had both ensured flexibly to swing between adjacent auxiliary bar 3, moreover it is possible in 1 bottom surface of sparerib shelf It is respectively formed and support platform and the matched plane of mattress with top surface.

Embodiment two:

As shown in fig. 7, the auxiliary bar 3 is the one-way flexible bar with horizontal direction deformation, the corresponding connecting pin of adjacent auxiliary bar 3 It is bonded by the fastener 5 extended transversely through affixed, the auxiliary bar 3 realizes adjacent 3 front of motor spacing of auxiliary bar by self-deformation From adjusting.

During installation, the side wall of adjacent 3 connecting pin of auxiliary bar matches fitting, and the fastener 5 by extending transversely through is affixed.It is auxiliary Bar 3 is sheet, and the height parameter of auxiliary bar 3 should meet vertical ability of anti-deformation, and the thickness parameter of auxiliary bar 3 should meet deformation nature, Enable auxiliary bar 3 bearing mattress and not vertical deformation in the case where user's weight, and adjusts 1 width Shi Nengjin of sparerib shelf Row transverse deformation is adjusted.When in use, user, which passes through to pull mobile jib 2 backwards and realize, becomes the opposite stretching of auxiliary bar 3, and sparerib shelf 1 is logical It crosses location structure and bears the deformation recovery power from auxiliary bar 3, it is ensured that sparerib shelf 1 is able to maintain predetermined width.

Claims (10)

1. a kind of broad-adjustable bed structure, including bedstead and the sparerib shelf being arranged in above bedstead (1), feature exists It include mobile jib (2) disposed in parallel and being connected across broadening between two mobile jibs (2) each other and adjusting component in, the sparerib shelf (1), It is described to broaden that adjust component include that several head and the tail are sequentially connected and fold the auxiliary bar (3) to form Z-shaped, pass through and adjusts adjacent auxiliary bar (3) distance realizes that distance is adjusted between two mobile jibs (2) between front of motor, and auxiliary bar (3) top surface forms smooth mattress supports face.

2. a kind of broad-adjustable bed structure according to claim 1, which is characterized in that the auxiliary bar (3) is even number Root, positioned at broadening, the auxiliary bar (3) for adjusting component two sides is connected on the end in the same direction of corresponding mobile jib (2) by end；Alternatively, The auxiliary bar (3) and the mobile jib (2) isometric setting.

3. a kind of broad-adjustable bed structure according to claim 2, which is characterized in that adjacent auxiliary bar (3) is corresponding By shaft (4) connection being vertically arranged between connecting pin, adjacent auxiliary bar (3) realizes the non-company of adjacent auxiliary bar (3) by adjusting angle folding Distance is adjusted between connecing end.

4. a kind of broad-adjustable bed structure according to claim 2, which is characterized in that the auxiliary bar (3) be with The one-way flexible bar of horizontal direction deformation, it is solid that the corresponding connecting pin of adjacent auxiliary bar (3) passes through fastener (5) fitting extended transversely through It connects, the auxiliary bar (3) realizes that distance is adjusted between adjacent auxiliary bar (3) front of motor by self-deformation.

5. a kind of broad-adjustable bed structure according to claim 1 to 4, which is characterized in that set on the bedstead There are at least two support platforms being crossed between two mobile jibs (2), the auxiliary bar (3) is slideably overlapped on continuous and smooth branch It supports on platform.

6. a kind of broad-adjustable bed structure according to claim 5, which is characterized in that the bedstead includes that width can Distance matches the support component adjusted between mobile jib (2), and the support component includes at least two frameworks that can plant overlapping (6), flush linking between framework (6) top surface and form the support platform, adjacent frame (6) by telescopic adjustment formed with The wide support platform of the sparerib shelf (1).

7. a kind of broad-adjustable bed structure according to claim 5, which is characterized in that the support platform end with Horizontal direction location structure is equipped between corresponding mobile jib (2), the location structure includes the convex that support platform top surface is arranged in The positioning groove (8) for playing (7) and being provided with mobile jib (2) bottom surface and being vertically nested with positioning protrusion (7).

8. a kind of broad-adjustable bed structure according to claim 6, which is characterized in that the support component is two It is a, and be provided separately along the mobile jib (2) length direction, the telescopic adjustment direction and the mobile jib (2) of the support component are long Degree direction is vertically arranged.

9. a kind of broad-adjustable bed structure according to claim 8, which is characterized in that adjacent frame is equipped between (6) Anticreep guide assembly, the anti-drop assembly include the guiding groove (9) being arranged in framework (6) and can move in guiding groove (9) Dynamic locating part (10).

10. a kind of broad-adjustable bed structure according to claim 9, which is characterized in that the support component includes The framework (6) that two vertical projections are rectangle, the framework (6) include hanging down with mobile jib (2) end plate disposed in parallel, with end plate Straight side plate (11) and the cavity being enclosed by end plate and side plate (11), on the end plate that the framework (6) is held in opposite directions Socket (12) equipped with perforation setting, the cavity form the guiding groove (9), and the end plate for opening up socket (12) forms locating part (10), the framework (6) is vertically nested with, so that locating part (10) in any framework (6) and connecting with locating part (10) Side plate (11) is movably inserted into respectively in the guiding groove (9) on another framework (6) and socket (12), realizes two frameworks (6) water It puts down to limit telescopic.