CN104540418B - Sliding device for drawer - Google Patents

Abstract

The present invention provides a kind of sliding device for drawer.The sliding device for drawer of one embodiment of the invention includes ball, can be slidably connected and form multiple slide rails of a pair flange and the plurality of slide rail respectively, for guiding drawer to push or being drawn out in the accommodation space that storage main body is formed, wherein, it is respectively formed with slideway at the plurality of flange, for inserting the local of the plurality of ball, for guiding the direction along pushing or pull out described drawer to roll, and, the plurality of slideway forms a pair supporting surface respectively, parallel with the direction pushing or pulling out described drawer, and, balanced configuration centered by the dummy line of the bend caved in towards the direction inserted for described ball and the center line connecting described ball and described bend, support described ball respectively.

Description

Sliding device for drawer

Technical field

The present invention relates to sliding device for drawer, relate to a kind of sliding device for drawer, be arranged at home appliance or the furniture etc. with the drawer being accommodated with storage thing, guide and pull out swimmingly or push drawer.

Background technology

Majority of case is to arrange at storage devices such as home appliance and furniture such as refrigerators to supply storage to receive the drawer of thing.This drawer is provided with carriage, typically makes it easy to opening and closing drawer.

Fig. 1 illustrates the storage device with sliding device for drawer as above, the cross section of the storage device shown in diagrammatic illustration 1 in Fig. 2.

With reference to Fig. 1 and Fig. 2, the storage device 10 for storage storage thing (not shown) includes: form storage main body 11 and the drawer 13 of accommodation space 12, and the both sides of drawer 13, by sliding device for drawer 100,100 ', are connected with storage main body 11 respectively.

Thus, drawer 13 for storage storage thing (not shown), slide along the direction that the X-axis of the reference axis represented with Fig. 1 is parallel relative to storage main body 11, guide by a pair sliding device for drawer 100,100 ' in making it possible to push B accommodation space 12 swimmingly or pull-out A.

As reference, the sliding device for drawer 100 ' of the opposite side being arranged in drawer 13 have on the basis of drawer 13 with sliding device for drawer 100 symmetrical structure, Fig. 1 illustrate only the sliding device for drawer 100 of the side being arranged in general drawer 13.

Fig. 3 amplifies the cross section of display sliding device for drawer shown in Fig. 2.

Sliding device for drawer 100 includes multiple slide rail 110,130,150 and ball 120,120 ', 140,140 '.Respectively at multiple slide rails 110,130,150 with on the basis of the X-axis of the reference axis shown in Fig. 1 and parallel longitudinal centre line (not shown), to form flange 111,111 ', 131,131 ', 151,151 ' in bilateral symmetry.Not shown longitudinal centre line is illustrated with reference to figure 4 below.

Ball 120,120 ', 140,140 ' is respectively arranged in flange 111,111 ', 131,131 ', 151,151 ' between the flange being adjacent to, it is possible to be slidably connected to each other multiple slide rail 110,130,150.At this, at flange 111,131, the slideway 113,133,135,153 being used for guiding the moving direction of ball 120,140 is formed respectively on 151, eliminate symbol for convenience, but on flange 111 ', 131 ', 151 ', be also respectively formed with the slideway of the moving direction for guiding ball 120 ', 140 '.

Structure and operation for this sliding device for drawer 100, the patent document the 10-2008-0059697th applied for a patent it is recorded in detail because of the applicant, thus, omission further illustrates, because sliding device for drawer 100 ' has and above-mentioned sliding device for drawer 100 symmetrical structure, thus, the description thereof will be omitted.

The loading G produced because of weight and the weight of drawer 12 itself of not shown storage thing acts on drawer 12.And, as shown in the figure, when opening drawer 13, caused by loading G or with the vertical direction applied from outside, i.e. power F in the direction that the Z-direction of the reference axis shown in Fig. 1 is parallel can act on the pull-out direction end of drawer 13, counter-force F produced because of this power F ' push direction extreme ends along what the vertical direction parallel with Z axis can act on drawer 13.

By the plurality of power G, F, F ' and act on torsional load M, M ' to sliding device for drawer 100,100 ' respectively.

This torsional load M, M ', as shown in Fig. 2 curve arrow, act on the sliding device for drawer 100 of the side being arranged in drawer 13 in a clockwise direction, act on the sliding device for drawer 100 ' being arranged in opposite side in a counterclockwise direction for longitudinal centre line.

As reference, for being applied to the torsional load of sliding device for drawer 100, the applicant is described at the registered patent document the 10-1021574th of application, therefore, omits more specific description.

By being applied to torsional load M of sliding device for drawer 100, relative to vertical direction VL, i.e. and power P1 in direction of Z axis parallel direction cant angle theta of reference axis, P2 act on the ball 120 being arranged between a pair flange 111,131.Power P1 in the direction of this cant angle theta, P2 are as shown in the figure, it is possible to act on mutually opposite direction.

Here, power P1 in direction of cant angle theta, P2 as above act on the direction of the cant angle theta for vertical direction VL the most respectively and are included in other ball 120 ' of sliding device for drawer 100,140,140 ' and flange 131,151,111 ', 131 ', 151 '.Further, by torsional load M ' and the power in the direction of inclination that occurs also is able to act on the sliding device for drawer 100 ' of the opposite side being arranged in drawer 13, but eliminate diagram for convenience.

It is said that in general, slideway 113,133,135,153 has can support the power applied with the direction parallel with vertical direction VL.Therefore, as mentioned above, when power P1 tilted for vertical direction VL, P2 are respectively acting on ball 120,120 ', 140,140 ', during repeatedly pushing B or pull-out A drawer 13, ball 120,120 ', 140,140 ' not moves only along the track that the direction parallel with the moving direction of drawer 13 is the most original, but this power P1, P2 are along moving relative to the direction of vertical direction VL cant angle theta and with different tracks.When ball 120,140 situation departing from original track and movement occurs repeatedly, the shape of slideway 113,133,135,153 gradually deforms or inordinate wear occurs.

Because of as above reason, slide rail 110,130,150 deforms or during inordinate wear, drawer 13 cannot smooth and easy opening and closing, or during pushing A or pull-out B drawer 13, there is noise, and shorten the life-span of slide rail 110,130,150.

Summary of the invention

The problem that invention is to be solved

The purpose of multiple embodiments of the present invention is prevent sliding device for drawer deformation or inordinate wear occurs, and extends the life-span.

For solving the scheme of problem

An aspect of of the present present invention is for providing a kind of sliding device for drawer, this sliding device for drawer, including ball, can be slidably connected and be respectively formed with multiple slide rails of a pair flange and the plurality of slide rail, and drawer is pushed for guiding or is drawn out in the accommodation space that storage main body is formed, slideway is formed at multiple described flanges, for inserting the local of described ball, guide and described drawer is rolled with the direction pushing or pulling out, and form multiple supporting surface at the plurality of slideway, parallel with the direction pushing or pulling out described drawer, by with balanced configuration centered by the dummy line towards the bend inserting the direction of described ball and cave in and the center line being connected described ball and described bend, support described ball respectively.

Here, described supporting surface can be formed a pair.

Further, the pair of supporting surface is flat shape.

Or the pair of supporting surface is the curve form caved in towards the part with described ball contact.Now, the radius of curvature of described supporting surface is the 50% and less than 60% of the diameter exceeding described ball.

For sliding device for drawer as above, supply the brace groove being partially inserted into of described ball to be formed in parallel at the pair of supporting surface with the direction pulling out and pushing described drawer respectively.Now, the radius of curvature of described brace groove is more than the 50% of the diameter of described ball, less than 60%, especially, described brace groove is formed in the way of having radius of curvature corresponding with the radius of described ball, in order to described brace groove and described ball can carry out linear contact lay.

For shape space between sliding device for drawer as above, described bend and described ball.

The effect of invention

Embodiments of the invention are by being formed at slideway by supporting surface, wherein, described supporting surface is for supporting the power in the direction tilted relative to being applied to be formed at the vertical direction of the ball of sliding device for drawer, thus, the deformation of anti-anti-slip track or inordinate wear, and extend the life-span.

Further, forming space between slideway and ball, the storage of this space has lubricant or contains the dust produced because of abrasion, thus, even if using sliding device for drawer for a long time, it is also possible to keep round and smooth lubricating status.

Accompanying drawing explanation

Fig. 1 is the sectional view of the storage device illustrating and having common sliding rail for drawer；

Fig. 2 is the sectional view of the storage device that Fig. 1 shows；

Fig. 3 is the sectional view of the sliding device for drawer that Fig. 2 shows；

Fig. 4 is the sectional view of the sliding device for drawer of the 1st embodiment of the present invention；

Fig. 5 is the partial enlarged drawing being shown as V in Fig. 4；

Fig. 6 is the sectional view of the sliding device for drawer of the 2nd embodiment of the present invention；

Fig. 7 is the partial enlarged drawing being shown as VII in Fig. 6；

Fig. 8 is the sectional view of the sliding device for drawer of the 3rd embodiment of the present invention；

Fig. 9 is the partial enlarged drawing being shown as IX in Fig. 8.

Description of reference numerals

200,300,400: sliding device for drawer

210,230,250,310,350,410,450: slide rail

211,231,251,311,351,411,451: flange

220,240,320,420: ball

213,233,235,253,313,353,413,453: slideway

Detailed description of the invention

The present invention can implement various deformation, and has various embodiment, illustrates specific embodiment at accompanying drawing, and is specifically described it.It is to be understood that, not limit the invention to specific form of implementation, and include all deformed, coordinate and the equivalent of thought and the technical scope being contained in the present invention.When the present invention is described, it is judged that when the illustrating of relevant known technology obscures idea of the invention, omit its specific description.

Below, referring to the drawings embodiments of the invention are specifically described.

Fig. 4 shows the sectional view of the sliding device for drawer of the 1st embodiment of the present invention.

With reference to Fig. 4, the sliding device for drawer 200 of the 1st embodiment of the present invention includes three slide rails 210,230,250 and multiple ball 220,240.Further, multiple balls 220,240 also include tray, support the spacing being used for keeping the most certain, but eliminate its diagram for convenience.

It is respectively formed with a pair flange 211,231,251 at multiple slide rails 210,230,250.

Here, for convenience of description, three slide rails 210,230,250 are pressed configuration sequence, the referred to as the 1st slide rail the 210, the 2nd slide rail the 230 and the 3rd slide rail 250.

Formed at the 1st slide rail 210 and there is a pair flange 211,211 ' shape symmetrical on the basis of longitudinal centre line CL1, formed at the 2nd slide rail 230 and there is a pair flange 231,231 ' shape symmetrical on the basis of longitudinal centre line CL2, formed at the 3rd slide rail 250 and there is a pair flange 251,251 ' shape symmetrical on the basis of longitudinal centre line CL3.

The 1st slide rail 210 flange 211,211 ' and and the flange 231,231 ' of its 2nd slide rail 230 being adjacent to respectively between be respectively configured ball 220,220 ', the 2nd slide rail 230 flange 231,231 ' and and the flange 251,251 ' of its 3rd slide rail 250 being adjacent to respectively between be respectively configured ball 240,240 '.

Flange 211 one side at the 1st slide rail 210 forms the slideway 213 of local inserting ball 220 respectively, also forms the slideway 233 being partially inserted into one side towards ball 220 for ball 220 on the flange 231 of the 2nd slide rail 210.

Further, the flange 231 of the 2nd slide rail 230 is also formed and is partially inserted into the slideway 235 to the another side towards ball 240 for ball 240, the flange 251 of the 3rd slide rail 250 is formed the slideway 253 being partially inserted into one side towards ball 240 for ball 240.

At this, although not shown, but ball 220,240 is with the longitudinal direction with slide rail 210,230,250, direction that X-axis that i.e. accompanying drawing shows is parallel or the parallel direction of longitudinal centre line CL1, CL2, CL3 are respectively configured multiple, slideway 213,233,235,253 with push (Figure 1B) or pull-out (Figure 1A) drawer (the 13 of Fig. 1) direction, the direction that i.e. X-axis of reference axis is parallel is formed, and guides ball 220,240 respectively to push the direction slip of B or pull-out A drawer 13.

Additionally, though accompanying drawing does not marks reference, slideway is formed the most respectively on flange 211 ', 231 ', 251 ', this slideway is respectively for inserting the local of ball 220 ', 240 ', by the plurality of slideway, ball 220 ', 240 ' is guided to roll with the direction parallel with the direction pushing B or pull-out A drawer 13 respectively.

Therefore, 1st slide rail the 210 and the 2nd slide rail 230 is by ball 220,220 ', can combine slidably engaged with one another with the direction parallel with the X-axis of reference axis, the 2nd slide rail the 230 and the 3rd slide rail 240 combines with the direction parallel with the X-axis of reference axis slidably engaged with one another by ball 240,240 '.

That is, multiple slide rail 210,230,250 is for being adjacent to, and mutually combines slidably with the direction parallel with the direction pushing B or pull-out A drawer 13.

In order to make multiple slide rail 210,230,250 mutually slide swimmingly, as it can be seen, multiple slide rail 210,230,250 configuration makes longitudinal centre line CL1, CL2, CL3 parallel with the X-axis of whole reference axis.

As reference, the sliding device for drawer 200 of the 2nd slide rail 230 can guide the pushing B and the distance of pull-out A of drawer 13 to arrange for increasing, although not shown, but as required, more than one slide rail (not shown) and multiple ball (not shown) can be increased between the 2nd slide rail the 230 and the 3rd slide rail 250.

Additionally, although not shown, but sliding device for drawer 200 is because being applicable to small-sized drawer 13 etc., and during without the opening and closing distance of longer drawer 13, remove the 2nd slide rail 230, and, after removing ball 220 or ball 240, reduce the distance between the flange 211 of the 1st slide rail 210, increase the distance between the flange 251 of the 3rd slide rail 250, thus, it is also possible to make the 1st slide rail the 210 and the 3rd slide rail 250 directly in conjunction with.

That is, the sliding device for drawer 200 of the 1st embodiment of the present invention is as it can be seen, not only have three sections of shapes of three slide rails 210,230,250, it is also possible to be applicable to not shown two section or the sliding device for drawer of the multistage shape more than three sections.It also is able to be applied below to other embodiments of the invention of explanation.

Fig. 5 amplifies the part being shown as V in display Fig. 4.

With reference to Fig. 5, the slideway 213 that the flange 211 at the 1st slide rail 210 is formed forms a pair supporting surface 2131,2133 and the bend 2135 with flat shape.Here, for purposes of illustration only, a pair supporting surface 2131,2133 is referred to as the 1st supporting surface the 2131 and the 2nd supporting surface 2133.

Bend 2135 towards insert ball 220 direction depression formed, ball 220 be partially formed to be inserted in slideway 213.Now bend 2135 formation ground is parallel with the direction pushing (Figure 1B) or pull-out (Figure 1A) drawer (the 13 of Fig. 1).

That is, the 1st supporting surface the 2131 and the 2nd supporting surface 2133 has the shape that depression bending is absorbed in centered by bend 2135, is partially inserted into the side of ball 220 to this part.The ball 220 that side is partially inserted into slideway 213 contacts with the 1st supporting surface the 2131 and the 2nd supporting surface 2133 and is supported respectively.

Now, the 1st supporting surface the 2131 and the 2nd supporting surface 2133 configures centered by dummy line IC1 of the central point 01 of connecting bending pars convoluta 2135 and ball 220 symmetrically.That is, dummy line IC1 and the 1st supporting surface the 2131 and the 2nd supporting surface 2133 are formed respectively angle θ 1, θ 2 are identical.

It addition, be also formed with a pair supporting surface 2331,2333 and the bend 2335 with flat shape on the slideway 233 of the flange 231 one side formation of the 2nd slide rail 230.For purposes of illustration only, a pair supporting surface 2331,2333 is referred to as the 3rd supporting surface the 2331 and the 4th supporting surface 2333.

Bend 2335, towards the direction depression formation for inserting ball 220, is formed such that the local of ball 220 is inserted in slideway 233.Now bend 2335 is also formed parallel to the direction pushing B or pull-out A drawer 13.

That is, the 3rd supporting surface the 2331 and the 4th supporting surface 2333 has the shape that depression bending is absorbed in centered by bend 2335, is partially inserted into the opposite side of ball 220 to this part.The ball 220 that opposite side is partially inserted into slideway 233 contacts with the 3rd supporting surface the 2331 and the 4th supporting surface 2333 and is supported respectively.

3rd supporting surface the 2331 and the 4th supporting surface 2333 configures centered by dummy line IC2 of the central point 01 of connecting bending pars convoluta 2335 and ball 220 symmetrically.That is, dummy line IC2 and the 3rd supporting surface the 2331 and the 4th supporting surface 2333 are formed respectively angle θ 3, θ 4 are identical.

The contact point of ball the 220 and the 1st supporting surface 2131 is referred to as the 1st strong point 2132, the contact point of ball the 220 and the 2nd supporting surface 2133 is referred to as the 2nd strong point 2134, the contact point of ball the 220 and the 3rd supporting surface 2331 is referred to as the 3rd strong point 2332, when the contact point of ball the 220 and the 4th supporting surface 2333 is referred to as 4 strong point 2334, ball 220 is supported for the shape by four supporting surfaces 2131,2133,2331,2333 cincture, contacts with four strong points 2132,2133,2332,2334 and is supported.

I.e., a pair slideway 213,233 of the shape with parcel ball 220 is supported by four supporting surfaces 2131,2133,2331,2333, thus, there is compared with common sliding device for drawer (the 100 of Fig. 1) described above the strong point 2132,2133,2332,2334 of twice.Therefore, it is enhanced because of the loading of the sliding device for drawer 100 of the 1st embodiment of applying to the present invention by dispensing support, the loading enabling capabilities of sliding device for drawer 100, and the effect in life-span can be extended.

The sliding device for drawer 200 of the 1st embodiment of the present invention has structure as above, ball 220 guides by slideway 213,233 and makes not only to slide with the direction parallel with the direction pushing B or pull-out A drawer 13, even if the power in the direction tilted relative to vertical direction (VL of Fig. 3) (with reference to P1, P2 of Fig. 1) applies to ball 220, during moving along slideway 213,233, also without departing from original track.

Therefore, the sliding device for drawer 200 of the 1st embodiment of the present invention have be prevented from slide rail 210,230 deformation or occur inordinate wear, prevent noise, and prolong long-life effect.

Additionally, between the side outer peripheral face being formed at the bend 2135 of slideway 213 of the 1st slide rail 210 and ball 220, form space 2136, between the opposite side outer peripheral face being formed at the bend 2335 of slideway 233 of the 2nd slide rail 230 and ball 220, form space 2336.

Although not shown, but between slideway 213,233 and ball 220, be coated with lubricant, so that rolling swimmingly.But the rolling repeatedly along with ball 200, the oil film formed between the strong point 2132,2133,2332,2334 and the outer peripheral face of ball 220 loses, now the lubricant being saved between space 2136,2336 of the sliding device for drawer 200 of the 1st embodiment of the present invention flows between the strong point 2132,2133,2332,2334 and the outer peripheral face of ball 220, by supplementary oil film, it is possible to obtain the effect of continuous lubrication.

Further, along with continuous contact between four supporting surfaces 2131,2133,2331,2333 and ball 220, the dust produced because of friction can be produced in-between.This dust can hinder the rolling smoothly of ball 220, but the dust because producing at the sliding device for drawer 200 of the 1st embodiment of the present invention is saved bit by bit in space 2136,2336, though long-play, it is also possible to the rolling condition smoothly of the ball 220 that is maintained.

It addition, two dummy line IC1 described above, IC2 can be formed parallel to the direction of vertical direction VL.Now, although not shown, the angle (θ 5, with reference to Fig. 5) but between two dummy line IC1, IC2 can be formed parallel, thus, constitute make angle, θ 1 that four supporting surfaces 2131,2133,2331,2333 are formed with vertical direction VL, θ 2, θ 3, θ 4 size the most identical.

As reference, the power that the direction that four supporting surfaces 2131,2133,2331,2333 tilt relative to vertical direction (VL of Fig. 3) according to the central point 01 towards ball 220 applies is (with reference to P1, when P2) and vertically configuring, four supporting surfaces 2131,2133,2331,2333 can support this power P1, P2 most effectively.

To this end, after the angle of four supporting surfaces 2131,2133,2331,2333 of configuration is calculated by simulation etc., or reality manufactures sliding device for drawer 200 and is arranged on storage device (with reference to the 10 of Fig. 1), drawn by experiment.

It addition, flange 231 another side at the 2nd slide rail 230 also forms slideway 235.It is formed with a pair supporting surface 2351,2353 and bend 2355 at slideway 235.

Bend 2355, towards the direction depression formation for inserting ball 240, forms to make being partially inserted into slideway 235 of ball 240.Now bend 2355 formation ground is parallel with the direction pushing B or pull-out A drawer 13.

At this, ball 220,240 is configured at the both sides of the flange 231 of the 2nd slide rail 230, thus, slideway 213,233 aspect is formed respectively in one side and another side, 1st slide rail the 210 and the 3rd slide rail 250 there are differences, and so that the structure of the slideway 235,253 that ball 240 direction parallel for the direction that guides with push B or pull-out A drawer 13 rolls has identical structure with slideway 213,233 described above, therefore, identical explanation is omitted.

It is said that in general, sliding device for drawer 200 is on the basis of drawer (the 13 of Fig. 1), arrange to make the bilateral symmetry at drawer 13.Therefore, when sliding device for drawer 200 is all used in side and the opposite side of drawer 13, improve the compatibility of sliding device for drawer 200, it is possible to reduce stock, and the versatility of the parts constituting carriage 200 can be improved.

As it has been described above, during in order to make sliding device for drawer 200 all be used in the side that side and the opposite side of drawer 13, such as sliding device for drawer 200 have been arranged on drawer 13, and when being arranged on opposite side, it is symmetrically formed on the basis of drawer 13.

To this end, such as, sliding device for drawer 200 has relative to central plane CS symmetrical structure.Wherein, central plane CS refers to all configure the plane of longitudinal centre line CL1, CL2, CL3 of multiple slide rails 210,230,250 of the configuration that is parallel to each other, parallel with the plane that the X-axis according to reference axis and Y-axis define.

When longitudinal centre line CL1, CL2, the CL3 of multiple slide rails 210,230,250 of configuration of being parallel to each other all is arranged in central plane CS, on the basis of this central plane CS, sliding device for drawer 200 is symmetrically formed.

Now, multiple slideways 213,233,235,253 have relative to central plane CS symmetrical structure, and the sliding device for drawer 200 of the side being arranged at drawer 13 also is able to be used in the opposite side of drawer 13.

Additionally, multiple slide rails 210 of the sliding device for drawer 200 of the 1st embodiment of the present invention as mentioned above, 230, 250 all to include respective longitudinal centre line CL1, CL2, symmetrical structure on the basis of the central plane CS of CL3, other parts with partial symmetry described above, i.e. flange 211 ', 231 ', 251 ' and ball 220 ', the explanation of the attachment structure of 240 ' is omitted for convenience. and, below in other embodiments of the invention of explanation, there is the local of symmetrical structure on the basis of central plane CS only illustrate with side for representative.

As reference, although not shown, but above when the sliding device for drawer 200 of the 1st embodiment of the present invention is described, it is illustrated as a example by a pair supporting surface is formed at each slideway 213,233,235,253, but also is able to increase the quantity of the supporting surface being symmetrically formed centered by vertical direction VL.Increase the quantity of the strong point of the outer peripheral face supporting this ball 220, apply the power to ball 220 for maximum dispersion.

Fig. 6 shows the sectional view of the sliding device for drawer of the 2nd embodiment of the present invention.

With reference to Fig. 6, the sliding device for drawer 300 of the 2nd embodiment of the present invention includes two slide rails 310,350 and multiple ball 320,340.A pair flange 311,351 is formed respectively at multiple slide rails 310,350.Here, for purposes of illustration only, according to configuration two slide rails 310,350 order, the referred to as the 1st slide rail the 310 and the 2nd slide rail 350.

Between ball 320 is arranged at the flange 311 of the 1st slide rail 310 and is adjacent the flange 351 of the 2nd slide rail 350 of configuration.

Flange 311 at the 1st slide rail 310 is formed with the slideway 313 of the local, side inserting ball 320, the flange 351 of the 2nd slide rail 350 is also formed be partially inserted into the slideway 351 to the one side towards ball 320 for the opposite side of ball 320.

Multiple balls 320 are configured to row, slideway 313,353 formation ground is parallel with the direction pushing (Figure 1B) or pull-out (Figure 1A) drawer (the 13 of Fig. 1), guides ball 320 pushing B direction or pulling out the rolling of A direction along drawer 13.Therefore, multiple slide rails 310,350 can combine slidably with the direction parallel with the direction pushing B or pull-out A drawer 13.

Fig. 7 is the part being shown enlarged in Fig. 6 and being shown as VII.

With reference to Fig. 7, the slideway 313 that the flange 311 at the 1st slide rail 310 is formed forms a pair supporting surface 3131,3133 and the bend 3135 with curve form.Here, for purposes of illustration only, a pair supporting surface 3131,3133 is referred to as the 1st supporting surface the 3131 and the 2nd supporting surface 3133.

Bend 3135, towards the direction depression formation for inserting ball 320, is formed such that the local of ball 320 is inserted in slideway 313.Now, bend 3135 formed with push B or pull-out A drawer 13 direction, i.e. the direction of the X-axis of the reference axis that Fig. 4 shows is parallel.That is, the ball 320 that side is partially inserted into slideway 313 contacts with the 1st supporting surface the 3131 and the 2nd supporting surface 3133 and is supported respectively.

Now, the 1st supporting surface 3131 and the 2nd supporting surface 3133 configure centered by dummy line IC3 of the central point O2 of connecting bending pars convoluta 3135 and ball 320 symmetrically.That is, the 1st supporting surface 3131 of circular shape and the 2nd supporting surface 3133 of circular shape configures centered by described dummy line IC3 symmetrically.

The slideway 353 of flange 351 one side being formed at the 2nd slide rail 350 also is able to be formed with a pair supporting surface 3531,3533 and the bend 3535 with curve form.Because a pair supporting surface 3531,3533 and bend 3535 have shape symmetrical on the basis of the central point O2 of above-mentioned a pair supporting surface 3131,3133 and bend 3535 and ball 320, therefore, the repetitive description thereof will be omitted.

For ease of explanation, when a pair supporting surface 3531,3533 is referred to as the 3rd supporting surface 3531 and 4 supporting surface 3533, the 3rd supporting surface 3531 of circular shape and the 4th supporting surface 3533 of circular shape configure centered by dummy line IC4 of the central point 02 of connecting bending pars convoluta 3535 and ball 320 symmetrically.

The contact point of ball the 320 and the 1st supporting surface 3131 is referred to as the 1st strong point 3132, the contact point of ball the 320 and the 2nd supporting surface 3133 is referred to as the 2nd strong point 3134, the contact point of ball the 320 and the 3rd supporting surface 3531 is referred to as the 3rd strong point 3532, when the contact point of ball the 320 and the 4th supporting surface 3533 is referred to as 4 strong point 3534, ball 320 is supported for the shape being wound around by four supporting surfaces 3131,3133,3531,3533, and the outer peripheral face of ball 320 contacts with four strong points 3132,3133,3532,3534 and supported respectively.

I.e., a pair slideway 313,353 by the shape with parcel ball 320, guide and ball 320 is rolled with the direction parallel with the direction pushing B or pull-out A drawer 13, because of reason described above, even if power P1 in direction tilted relative to vertical direction (VL of Fig. 3), P2 are applied to ball 320, also without departing from original track.

Therefore, the sliding device for drawer 300 of the 2nd embodiment of the present invention is prevented from slide rail 310,350 deformation or inordinate wear occurs, and is extended the effect in life-span.

As reference, the radius of curvature of four supporting surfaces 3131,3133,3531,3533, the width etc. changing drawer (the 13 of Fig. 1) as required changes and is formed, but is formed in exceed ball 320 the 50% of diameter 2Rb the scope below 60%.

It addition, form space 3136 between bend 3135 and the side outer peripheral face of ball 320 of slideway 313 formation of the 1st slide rail 310, it is formed between the bend 3535 of the slideway 353 of the 2nd slide rail 350 and the opposite side outer peripheral face of ball 320 formation space 3536.Structure is similar and action effect is identical with the space of described above (the 2136 of Fig. 5,2336) in space 3136,3536, omits repeat specification.

Four supporting surfaces 3131,3133,3531,3533 of the sliding device for drawer 300 of the 2nd embodiment of the present invention are arranged perpendicular according to power P1 of direction applying towards the central point O2 of ball 320 and tilted relative to vertical direction (VL of Fig. 3), P2 (with reference to Fig. 3), thus so that four supporting surfaces 3131,3133,3531,3533 can support this power P1, P2 most effectively.As reference, now, four supporting surface 3131,3133,3531,3533 whole balanced configurations on the basis of the central point O2 of ball 320, two dummy line IC3 the most described above, IC4 can constitute parallel with vertical direction (VL of Fig. 3).

The sliding device for drawer 300 of the 2nd embodiment of the present invention has multiple slideway 311,351 relative to central plane CS symmetrical structure.Therefore, the sliding device for drawer 300 of the side being arranged on drawer 13 can be used in the opposite side of drawer 13, thus, improves the compatibility of sliding device for drawer 300, and reduces stock, it is also possible to improves the versatility of the parts constituting carriage 200.

As reference, 1st slide rail 310 can secure bond in storage device (the 10 of Fig. 1) storage main body (the 11 of Fig. 1) and drawer (the 13 of Fig. 1) in any one, the 2nd slide rail 350 can secure bond in storage main body 11 and drawer 13 in another.Therefore, the sliding device for drawer 300 of the 2nd embodiment of the present invention guides drawer 13 to move swimmingly with the direction pushing B or pull-out A relative to storage main body 11.

Although not shown, but when needing increase drawer 13 to push the distance of B or pull-out A from storage main body 11, between the 1st slide rail the 310 and the 2nd slide rail 350, the slide rail increases such as more than one the 2nd slide rail (the 230 of Fig. 4) illustrated with reference to Fig. 4 are arranged between the 1st slide rail the 310 and the 2nd slide rail 350.

Fig. 8 is the sectional view of the sliding device for drawer of the 3rd embodiment of the display present invention.

With reference to Fig. 8, the sliding device for drawer 400 in the 3rd embodiment of the present invention includes two slide rails 410,450 and multiple ball 420.A pair flange 411,451 is formed respectively at multiple slide rails 410,450.Here, for purposes of illustration only, according to configuration two slide rails 410,450 order, the referred to as the 1st slide rail the 410 and the 2nd slide rail 450.

Ball 420 is configured between the flange 411 of the 1st slide rail 410 and the flange 451 of the 2nd slide rail 450 that is adjacent configuration.

Flange 411 at the 1st slide rail 410 forms the slideway 413 of the local, side inserting ball 420, and the flange 451 at the 2nd slide rail 450 also forms the opposite side for ball 420 and is partially inserted into the slideway 451 of the one side towards ball 420.

Slideway 413,453 is formed parallel with the direction pushing (Figure 1B) or pull-out (Figure 1A) drawer (the 13 of Fig. 1), guides ball 420 to roll with the direction pushing B or pull-out A drawer 13.

Fig. 9 is the part amplified and be shown as IX in display Fig. 8.

With reference to Fig. 9, the slideway 413 of flange 411 being formed at the 1st slide rail 410 forms a pair supporting surface 4131,4133 and the bend 4135 with flat shape.Here, for purposes of illustration only, a pair supporting surface 4131,4133 is referred to as the 1st supporting surface the 4131 and the 2nd supporting surface 4133.

Bend 4135 towards insert ball 420 direction depression formed, ball 420 be partially formed to be inserted in slideway 413.Bend 4135 is formed parallel with the direction pushing B or pull-out A drawer 13, and the ball 420 that side is partially inserted into slideway 413 contacts with the 1st supporting surface the 4131 and the 2nd supporting surface 4133 and supported respectively.

Similarly, the slideway 453 in flange 451 one side being formed at the 2nd slide rail 450 is also formed with having a pair supporting surface 4531,4533 and the bend 4535 of flat shape.Because a pair supporting surface 4531,4533 and bend 4535 have shape symmetrical on the basis of the central point O3 of above-mentioned a pair supporting surface 4131,4133 and bend 4535 and ball 420, thus, omit repeat specification.

The brace groove 4137,4138,4537,4538 of the local inserting ball 420 is formed respectively at four supporting surfaces 4131,4133,4531,4533.Brace groove 4137,4138,4537,4538 is formed parallel with the direction pushing B or pull-out A drawer 13.Inner peripheral surface in brace groove 4137,4138,4537,4538 is respectively provided with circular shape.

Now, it is formed at supporting surface 4131,4133 balanced configuration centered by the dummy line (not shown) of the central point O3 connecting ball 420 and bend 4135 of flange 411, is formed at supporting surface 4531,4533 balanced configuration centered by the dummy line (not shown) of the central point O3 connecting ball 420 and bend 4535 of flange 451.

Now, the outer peripheral face of contact ball 420 and the i.e. supporting part 4132,4134,4532,4534 of part of brace groove 4137,4138,4537,4538 are formed and are absorbed in the shape to brace groove 4137,4138,4537,4538 respectively respectively, the radius of curvature that the inner peripheral surface of brace groove 4137,4138,4537,4538 has as required, the diameter 2Rb exceeding ball 420 50% and less than 60% scope select.

Furthermore such that four supporting surfaces 4131, 4133, 4531, brace groove 4137 in 4533, 4138, 4537, the center point of curvature of 4538 inner peripheral surfaces is consistent with the central point O3 of ball 420, brace groove 4137, 4138, 4537, when the radius of curvature of 4538 inner peripheral surfaces is corresponding with the radius of curvature of the outer peripheral face of ball 420, i.e., make brace groove 4137, 4138, 4537, the diameter 2Rb that inner peripheral surface radius of curvature is ball 420 of 4538 50% time, the outer peripheral face of ball 420 respectively with supporting part 4132, 4134, 4532, 4534 inner peripheral surface linear contact lay, and be supported.

Now, compared with the situation that the outer peripheral face of slideway 413,453 and ball 420 carries out point cantact, it is possible to support bigger power, when heavy weight storage thing received by drawer 13, it is possible to be suitable for the sliding device for drawer 400 of the 3rd embodiment of the present invention.

Additionally, space 3136 is formed between the side outer peripheral face being formed at the bend 4135 of slideway 413 of the 1st slide rail 410 and ball 420, space 4536 is formed between the opposite side outer peripheral face being formed at the bend 4535 of slideway 453 of the 2nd slide rail 450 and ball 420, space 4136,4536 is similar with the structure in space (the 2136 of Fig. 5,2336) described above, action effect is identical, therefore, the repetitive description thereof will be omitted.

As reference, the brace groove 4137,4138,4537,4538 of the sliding device for drawer 400 of the 3rd embodiment of the present invention also is able to be applicable to the sliding device for drawer 300 of sliding device for drawer the 200 and the 2nd embodiment of the 1st embodiment of the present invention of described above.

To sum up, the sliding device for drawer of embodiments of the invention is illustrated, but the thought of the present invention is not limited to this specification embodiment described.That is, understand those skilled in the art of inventive concept in identical thought range can according to the interpolation of inscape, deform, delete, increase etc. and easily research and develop other embodiments, but be contained in the thought range of the present invention.

Claims (8)

1. a sliding device for drawer, including ball, it is possible to be slidably connected respectively Form multiple slide rails of a pair flange and the plurality of slide rail, be used for guiding drawer to push Or be drawn out in the accommodation space that storage main body is formed, this sliding device for drawer It is characterised by,

Being respectively formed with slideway at the pair of flange, described slideway is for described ball It is partially inserted into, rolls along the direction that described drawer pushes or pulls out for guiding,

Described slideway is respectively formed with multiple supporting surface, pushes with described drawer or pulls out Direction parallel, and, with towards for described ball insert direction depression bending Portion and symmetrical centered by connecting the center line of described ball and the dummy line of described bend Configuration, and support described ball,

The radius of curvature of described supporting surface be the diameter exceeding described ball 50% and Less than 60%.

Sliding device for drawer the most according to claim 1, it is characterised in that

Described supporting surface is formed as a pair.

Sliding device for drawer the most according to claim 2, it is characterised in that

The pair of supporting surface is flat shape.

Sliding device for drawer the most according to claim 2, it is characterised in that

The pair of supporting surface is bending of caving in towards the local with described ball contact Shape.

5. according to the sliding device for drawer according to any one of claim 3 to 4, It is characterized in that,

For described ball the brace groove being partially inserted into respectively with pull-out and push described The direction of drawer is formed in parallel at the pair of supporting surface.

Sliding device for drawer the most according to claim 5, it is characterised in that

The radius of curvature of described brace groove is more than the 50% of the diameter of described ball, Less than 60%.

Sliding device for drawer the most according to claim 5, it is characterised in that

Described brace groove has radius of curvature corresponding with the radius of described ball, institute State brace groove and described ball is linear contact lay.

Sliding device for drawer the most according to claim 1, it is characterised in that

Space is formed between described bend and described ball.