CN2425735Y

CN2425735Y - Linear slide rail

Info

Publication number: CN2425735Y
Application number: CN 00239073
Authority: CN
Inventors: 吴清山
Original assignee: Hiwin Technologies Corp
Current assignee: Hiwin Technologies Corp
Priority date: 2000-06-15
Filing date: 2000-06-15
Publication date: 2001-04-04
Anticipated expiration: 2010-06-15

Abstract

A traditional linear slide rail is difficult to manufacture when the size of the traditional linear slide rail is small. If a traditional linear slide rail is made in a plastic injection molding mode, problems that metal and plastic are peeled off with each other, material is deformed in tempering, etc. A linear slide rail of the utility model uses a leaf spring to combine a slide block body with an end cover. Because the elasticity of the leaf spring relates deformation and when the deformation is changed slightly, the elasticity can not be changed sharply, an elasticity is continuously kept between the end cover and the slide block body, a gap is avoided to exist between the slide block body and the end cover, plastic material is avoided to be peeled off, etc., when the slide block of the linear slide rail of the utility model is in use. Besides, the utility model can be assembled easily because the leaf spring is used for combining and has a low manufacture cost.

Description

A kind of linear slide rail

The utility model is the structural design about a kind of linear slide rail, particularly a kind of slider designs of not using the screw locking, and the linear slide rail that the utility model is less to size has the goodish effect of improving.

Traditional linear slide rail, as shown in Figure 6, comprise rail bar 1, slide block body 2, end cap 3, cover plate 4 and oil-scrapping sheet 5 in the linear slide rail, and with screw 6, end cap 3, cover plate 4 and oil-scrapping sheet 5 are locked on the slide block body 2, be respectively equipped with fixed hole 12 and screw 22 on rail bar 1 and the slide block body 2, fixed hole 12 is in order to be fixed on rail bar 1 in the mechanism, and screw 22 is then in order to link slide block body 2 and mechanism; When the volume of slide block body 2 hour, the size design of screw 6 gets less, and the size of screw 6 is little after a certain stage, the size little difficulty of processing of healing is higher; Therefore use the design of Fig. 6, and be not suitable for making small linear slide rail.

Fig. 7 is the schematic representation of a kind of nearest disclosed technology (No. 6042269, the novel patent of U.S. utility), its design combines cover plate 4 and slide block body 2 mode with plastic rubber ejaculate molding fixedly, end cap 3 is provided with bayonet lock 31, and cover plate 4 is provided with pin hole 41, when composite end cap 3 and cover plate 4, bayonet lock 31 inserts in the pin holes 41 and fixes; When desire is separated end cap 3 and cover plate 4 then by earlier the bayonet lock head 311 of bayonet lock 31 is pressed in the bayonet lock groove 42 on the cover plate 4 little after, again end cap 3 is separated with cover plate 4.Though this design has overcome the processing problems of screw and screw and has reduced manufacture cost, but it has produced following 4 problems: the first is after nut body 2 is finished final grinding engineering, still need the nut body 2 plastic rubber ejaculate molding engineering that tries again, because the operating temperature of plastic rubber ejaculate molding reaches 150～200 ℃, this temperature has reached the tempering temperature of ferrous materials, and ferrous materials can produce metallographic variation and material deformation and precision after influencing final grinding under this temperature; They are two years old, cover plate 4 and nut body 2 are fixed together in the mode of plastic rubber ejaculate molding, because the thermal expansion coefficient of plastic cement is about 7～10 * 10-5 ℃-1 scope, the thermal expansion coefficient of alloyed steel then is about 1 * 10-5 ℃-1, two kinds of material coefficient of thermal expansion coefficients have differed 7～10 times more than, so after between one period spreadable life, between plastic cement and iron and steel can because repeatedly thermal stress effect and peel off mutually, cause the fault on the linear slide rail function, and because

cover plate

4 and 2 of nut bodies are affixed in the mode of plastic rubber ejaculate molding, so there is no the method maintenance after the fault; Its three, 4 of end cap 3 and cover plates are with the bayonet lock combination because the tolerance on making, and the characteristic of bayonet lock combination be for must existing a little gaps between the two, so fast when mobile when slide block, ball clashes into end cap 3 fast, can quicken becoming flexible of 4 of end cap 3 and cover plates; Its four, though on cover plate 4, be provided with the bayonet lock groove 42 that separates bayonet lock 31, yet unless special tool(s) is arranged, otherwise are suitable difficulties with both separation.

The purpose of this utility model is in order to solve in the known techniques, when the slide block bulk volume little, then screw is set difficulty, and the ejaculation of metal and plastic cement is when combining, be easy to generate and peel off and the problem of material tempering distortion, and avoid in the known techniques difficulty using the gap that bayonet lock caused and separate, a kind of linear slide rail that overcomes above-mentioned shortcoming is provided.

The utility model comprises a rail bar at least, is the rectangular of a finite length, and the both side surface of rail bar has the strip pearl groove parallel with rail bar; One slide block body has and the parallel pearl groove of the pearl groove of aforementioned rail bar; Ball is stored between the pearl groove of rail bar and slide block body; Two end cap invests aforementioned slide block body along having the groove that width is slightly larger than aforementioned ball diameter on the mating face of the two ends of pearl groove direction and aforementioned slide block body; The two ends warpage of spring sheet, middle partly parallel with aforesaid rail bar, the be placed in both sides of aforementioned two end cap of two joggling parts, and with spring sheet with two end cap and the combination of slide block body.

Linear slide rail of the present utility model for avoiding in the prior art, is set difficult problem when the little then screw of slide block bulk volume, and linear slide rail of the present utility model does not use the element of screw as combination, and uses spring sheet instead with slide block body and end cap combination.Screw function on the known linear slide rail end cap is that end cap is combined with the slide block body, but the strength that screw bears is not very big in fact, because the function of end cap is to bear the impact force that ball refluxes and turns to, so the load of the stressed and linear slide rail of end cap is not directly correlated, the stressed size of end cap is main relevant with the travelling speed of linear slide rail, but its strength is relatively very little with respect to the load of bearing of linear slide rail, so with end cap and sliding track body combination, its strength is enough with the elastic force of spring sheet.Use the binding member of spring sheet, can avoid the problem of screw and screw processing difficulties as end cap and slide block body.

Because the elastic force of spring is relevant with amount of deformation, and elastic force can not produce violent change when amount of deformation changed slightly, therefore the slide block of the utility model linear slide rail in use, though the flexible during use fatigue problem of spring sheet, but distortion in a small amount and elastic fatigue can't cause the acute variation on the elastic force, so after using length between end cap and slide block body, still continue to possess an elastic force, can avoid producing the gap between slide block body and end cap.

Linear slide rail of the present utility model uses spring sheet as the binding member between end cap and slide block body, because do not use the method for plastic rubber ejaculate molding that end cap is connected with metal, so after the slide block body is finished final grinding, do not need again processing procedure, so avoided the problem of material tempering distortion in the known techniques through a plastic rubber ejaculate molding; And, often possess a pressure at plastic cement and intermetallic because plastic cement and intermetallic are with the spring sheet clamping, and plastic cement and intermetallic be not the mode of sticking together, so metal in the no known techniques and plastic cement are peeled off problem.

Linear slide rail of the present utility model is the assembling that makes things convenient for spring sheet, be provided with to import angle and holding angle on spring sheet, and end cap is provided with holding tank, with in the convenient holding tank that spring sheet is pressed into end cap and with end cap and the combination of slide block body.Because linear slide rail of the present utility model, between its end cap and slide block body with the spring sheet clamping, and spring sheet continues to provide combination force between end cap and slide block body, so linear slide rail of the present utility model is avoided in the known techniques, uses bayonet lock in conjunction with the gap that is caused and the problem of separation difficulty; When pulling down spring, desire then only needs to use a word bottle opener spring sheet can be pried open.So linear slide rail of the present utility model is quite simple with the mode of end cap and combination of slide block body and decomposition, has overcome and used the separation difficulty problem that bayonet lock caused in the known techniques.

Plastic material in use because variations such as the temperature of environment, humidity, and the oxidation of material, material can deform and be crooked.The reason of distortion of materials and bending is mainly due to the release of material internal stress, and material is because of the stereomutation of material due to changing, when structure was more elongated, after then the internal stress of plastic cement through making material after a while discharged, structure occured bending and deformation easily.Linear slide rail of the present utility model, done best arrangement on the position being provided with of spring sheet, is that two good flat spring sheets are arranged at the part outside that occurs bending and deformation easily with intensity far beyond good plastic cement, and this can be avoided plastic cement malformation and make the problem of linear slide rail functional fault.

Be convenient further understanding feature of the present utility model and technology contents, please consult the preferred embodiment of following relevant this creation in detail, however this embodiment and graphic only for explanation and with reference to usefulness, but not in order to the utility model is done any restriction.

Description of drawings:

Fig. 1 is a linear slide rail constitutional diagram of the present utility model;

Fig. 2 is a linear slide rail front view of the present utility model;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is the spring sheet front view of linear slide rail of the present utility model;

Fig. 6 is a kind of traditional linear slide rail;

Fig. 7 is a kind of nearest disclosed linear slide rail.

Among the figure 1 is rail bar, and 2 is the slide block body, and 3 is end cap, and 4 is cover plate, 5 is oil-scrapping sheet, and 6 is screw, and 7 is retainer, and 8 is spring sheet, 9 is ball, and 11 is the pearl groove, and 12 is fixed hole, and 13 for keeping tank, 21 is the pearl groove, and 22 is screw, and 23 is flange, 24,25 is locating flange, 26 is the ball back flash, and 30 is the retainer fixed groove, and 31 is bayonet lock, and 32 are the backflow groove, 33 is the oil nozzle fixing threaded hole, and 34 is oil circuit, 35,36 is trip, 37 is locating flange, and 38 is adjutage, and 39 is holding tank, 41 is pin hole, and 42 is the bayonet lock groove, and 51 is circular hole, 52,53 is draw-in groove, and 311 is the bayonet lock head, and 381 is in conjunction with pin, 382 is joining hole, and α is a holding angle, and β is for importing the angle.

Better embodiment of the present utility model:

Fig. 1 is a linear slide rail constitutional diagram of the present utility model, linear slide rail comprises a rail bar 1 and slide block combination, slide block combination is by a slide block body 2, two end cap 3, two cover plates 4, two oil-scrapping sheets 5, two retainers 7, and with two spring sheets 8 by the both sides of slide block body 2 with each combination of elements together.Be respectively equipped with fixed hole 12 and screw 22 on rail bar 1 and slide block body 2, fixed hole 12 is in order to be fixed on rail bar 1 in the mechanism, and screw 22 is then in order to be fixed on slide block body 2 in the mechanism.Both sides at rail bar 1 respectively are provided with pearl groove 11, and the inboard of slide block body 2 quite then is provided with pearl groove 21 on the position, and 21 of pearl groove 11 and pearl grooves are provided with most balls 9, and ball 9 reduces

slide block body

2 and 1 frictional resistance that moves mutually of rail bar.Cover plate 4 is fitted in the two ends of slide block body 2, comparatively smooth-going loop so that ball-recirculation to be provided, and other has two end cap 3 to be attached to the two ends of slide block body 2, and coats cover plate 4; End cap 3 is provided with backflow pearl groove 32, and backflow pearl groove 32 and cover plate 4 common formation one make smooth-going ground of ball turn passage; Be provided with oil nozzle fixing threaded hole 33 and oil circuit 34 on the end cap 3 simultaneously, oil nozzle fixing threaded hole 33 is designed to convenient oil nozzle is fixed on the slide block, and oil circuit 34 then convenience is dispensed to lubricant oil the appropriate location of slide block effectively; For the assembling that makes oil-scrapping sheet 5 does not influence the assembling of oil nozzle, a circular hole 51 is arranged on oil-scrapping sheet 5, make oil nozzle can pass circular hole 51 and pin on oil nozzle fixing threaded hole 33; For avoiding using screw, and make things convenient for the combination of 5 of end cap 3 and oil-scrapping sheets, on end cap 3, be provided with locating flange 37 so that in conjunction with the time relative position accurate, and trip 35 and 36 are set on the outside of end cap 3, and on oil-scrapping sheet 5, be provided with and trip 35 and 36 corresponding draw-in grooves 52 and 53, after oil-scrapping sheet 5 and end cap 3 combinations, trip 35 and 36 is stuck on the draw-in groove 52 and 53 of oil-scrapping sheet 5, being connected to trip and draw-in groove of 3 of oil-scrapping sheet 5 and end caps links, because the function of oil-scrapping sheet 5 is to strike off the oil and the chip on rail bar 1 surface, it is little that it bears strength, so the chucking power of trip 35 and 36 has been enough to oil-scrapping sheet 5 is fixed.End cap 3 of the present utility model is provided with an adjutage 38, and adjutage 38 fits in aforesaid slide block body 2 outsides, and the tail end of adjutage 38 has one in conjunction with pin 381, and in when combination, two end cap 3 dock mutually, and in conjunction with joining hole 382 fits of pin 381 and another end cap.

Fig. 2 is a linear slide rail combination of the present utility model back front view, be clear understanding linear slide rail structure of the present utility model, the right side of slide block combination is represented with sectional view, by seeing in the sectional view that cover plate 4 is surrounded by slide block body 2 and

end cap

3,2 of end cap 3 and slide block bodies are provided with a cover plate 4, and backflow pearl groove 32 on the end cap 3 and the cover plate 4 common U type ball turn passage that form; End cap 3 outsides are provided with an oil-scrapping sheet 5, the combination that oil-scrapping sheet 5 and end cap are 3, and with locating flange 37 location, and the trip 35 on the end cap 3 is fastened on the draw-in groove 52 of oil-scrapping sheet 5, and oil-scrapping sheet 5 is fixing; In addition, on the slide block body 2 with the junction plane of end cap 3 on also be provided with two locating flanges (24 and 25), with so that 4 of slide block body 2 and end cap 3 and cover plates in conjunction with the time the position accurate.The mating face of slide block body 2 and adjutage 38 is provided with a flange, is out of shape in using process to avoid adjutage.

Fig. 3 is the A-A sectional view of Fig. 2, respectively is provided with pearl groove 11 in the both sides of rail bar 1, then is provided with pearl groove 21 on the inboard opposite position of

slide block body

2, and 21 of pearl groove 11 and pearl grooves are provided with most balls 9; And pearl groove 11 bottoms of rail bar 1 are provided with a maintenance tank 13, one retainer 7 is arranged at therebetween, the two ends of retainer are fixed on the end cap 3, when the slide block combination separates with rail bar 1, ball 9 separates with pearl groove 11, but ball 9 can not drop ball 9 because of being subjected to the encirclement of pearl groove 21 and retainer 7 from the slide block combination.The outside of slide block body 2 is provided with ball back flash 26, the passage that the adjutage 38 mutual group unification of ball back flash 26 and end cap 3 refluxes for ball, then respectively there is a spring sheet 8 in the outside of adjutage 38, spring sheet 8 and adjutage 38 are out of shape in using process to avoid aforesaid adjutage in adjacency; Aforesaid spring sheet 8 is near the pearl groove of aforesaid adjutage, to increase pearl groove intensity.Because spring sheet 8 has elastic force and the characteristic high far beyond plastic cement intensity, adjutage 38 can be fitted on the slide block body 2, to avoid the substantially horizontal bending of adjutage 38 along Fig. 3, and adjutage 38 is in the Vertical direction of Fig. 3, because the cross section broad, crooked being difficult for takes place, but for making adjutage 38 more not flexible in this direction, can design a flange 23 on the slide block body 2, prevent the ability of adjutage bending with reinforcement.For undersized specification, because adjutage 38 is shorter relatively, can not be crooked, and the space is too little, and the difficulty that flange 23 is set on slide block body 2 increases relatively, and then can economize the setting of abandoning flange 23 this moment, to reach the demand of dwindling the space.

Fig. 4 is the B-B sectional view of Fig. 3, and the backflow pearl groove 32 of end cap 3 and the cover plate 4 common passages that form a circular arc shaped among the figure are so that ball 9 changes rotation direction easily; But when linear slide rail small-sized, because the chamfering after the processing promptly has the function of similar cover plate 4, thus usually cover plate 4 is given omission saving the space, and convenient making.On end cap 3, be provided with holding tank 39, spring sheet 8 two ends warpages of the present utility model, the two ends of warpage are entrapped on the end face of end cap 3 in the holding tank 39, because the end face of end cap 3 is provided with holding tank 39, after spring sheet 8 combinations, slide block body 2,

end cap

3 and 4 i.e. combinations stably of cover plate.The quantity of spring sheet 8 is two, and two spring sheets are parallel to each other, and the both sides of the slide block body 2 that is placed in.Among Fig. 4, end cap 3 is provided with retainer fixed groove 30, and the two ends of retainer 7 are stuck in the retainer fixed groove 30 and fix, and ball 9 dropped when retainer 7 can avoid the slide block combination to separate with rail bar 1.

Fig. 5 is the front view of spring sheet 8, the warpage place, two ends of spring sheet 8 is provided with holding angle α and imports angle β, acting as of holding angle α among the figure provides an elastic force, so that end cap 3 and slide block body 2 are combined, and avoids

end cap

3 and 2 of slide block bodies to have the gap; And import the effect of angle β, then spring sheet 8 is pressed in the holding tank 39 of two end cap, with fixing two end cap 3 for convenient; When desire was separated end cap 3 with slide block body 2, holding angle α had the effect that spring sheet 8 is derived simultaneously, only needed to use a word bottle opener to insert between spring sheet 8 and the slide block body 2, spring sheet 8 can be pried open.Spring sheet 8 combinations and decomposition are all very easy.

Claims

1. linear slide rail is characterized in that it comprises at least:

One rail bar (1) is the rectangular of a finite length, and the both side surface of rail bar has the strip pearl groove (11) parallel with rail bar; One slide block body (2) has and the parallel pearl groove of the pearl groove of aforementioned rail bar (1) (21); Ball is stored between the pearl groove of rail bar and slide block body; Two end cap (3) invests aforementioned slide block body (2) along having the groove that width is slightly larger than aforementioned ball diameter on the mating face of the two ends of pearl groove direction and aforementioned slide block body; Spring sheet (8), the two ends warpage, middle partly parallel with aforesaid rail bar (1), the be placed in both sides of aforementioned two end cap of two joggling parts, and with spring sheet (8) with two end cap and the combination of slide block body.

2. according to the described linear slide rail of claim 1, the quantity that it is characterized in that spring sheet (8) is two, and two spring sheets are parallel to each other, and the both sides of slide block body (2) that are placed in.

3. according to the described linear slide rail of claim 1, it is characterized in that between end cap (3) and slide block body (2), being provided with a cover plate (4) the jointly synthetic U type ball path of the backflow pearl groove of aforesaid cover plate and aforementioned end cap.

4. according to the described linear slide rail of claim 1, it is characterized in that rail bar (1) is provided with one and keeps tank (13).

5. according to the described linear slide rail of claim 4, it is characterized in that having a retainer (7) in keeping tank (13), the two ends of aforementioned retainer are fixed on the aforesaid end cap (3).

6. according to the described linear slide rail of claim 1, it is characterized in that being provided with an oil-scrapping sheet in the outside of end cap (3).

7. according to the described linear slide rail of claim 6, it is characterized in that being provided with trip (35,36) on the outside of end cap (3), and oil-scrapping sheet (5) is provided with draw-in groove, the binding between aforesaid oil-scrapping sheet and end cap is to link with trip and draw-in groove.

8. according to the described linear slide rail of claim 1, it is characterized in that end cap (3) is provided with adjutage, aforesaid adjutage (38) fits in aforesaid slide block body (2) outside; The tail end of adjutage is provided with in conjunction with pin.

9. according to claim 1,8 described linear slide rails, it is characterized in that the mating face of slide block body (2) and adjutage (38) is provided with a flange; Spring sheet (8) and adjutage (38) are in adjacency; Aforesaid spring sheet (8) is near the pearl groove of aforesaid adjutage.

10. according to the described linear slide rail of claim 1, it is characterized in that aforementioned slide block body (2) with the junction plane of aforementioned end cap (3) on be provided with locating flange.