TWM577909U - Sliding block with elastic maintaining device - Google Patents

Abstract

A slider with elastic retaining device comprises a slider body, two reflow elements, a plurality of balls, two end caps, a plurality of elastic retaining devices and a plurality of ball retainers assembled on both end faces of the slider body And having an open groove, two first groove portions on the outer surface, two second groove portions on one side of the first groove portion, and two third groove portions on one groove wall, the first and third groove portions are Extending in the axial direction, the second groove portion extends in a second direction perpendicular to the axial direction. The elastic retaining device is disposed in the first groove portion and has a fixing portion in the axial direction, and the ball is retained The first retaining portion of the appliance in the axial direction, the second retaining portion disposed in the second groove portion, and the third retaining portion extending in the axial direction and hooked on the fixed portion.

Description

Slider with elastic retaining device

The present invention relates to a linear slider, and more particularly to a slider having an elastic retaining device capable of holding a ball in a stable position.

Linear slides are widely used in the core components of various precision machines to achieve high precision linear motion. The invention patent of the "slider device for linear slides" of the publication No. I290984 is a conventional linear slider structure, which generally comprises a slider body, a plurality of side covers, a plurality of dustproof members, and a plurality of balls and Most of the ball retainers.

The slider body has a plurality of reflow grooves and a plurality of return holes extending through the end faces. The return holes and the return grooves are independent of each other, and the return grooves and the track grooves form a plurality of return passages.

The side cover has a plurality of return grooves and a return end corresponding to the return holes and the return passages, and the side cover is coupled to the slider body to construct two circulation passages, and the balls are accommodated in the circulation passage. .

The ball retaining member is an inverted U-shaped frame, and has a long diameter portion extending in a first direction, and a middle diameter portion extending from a distal end portion of the long diameter portion toward a second direction, and two from the foregoing The short-diameter portion of the end portion of the intermediate-diameter portion is extended in a third direction. The ball holder is shielded on the side of the ball by the long-diameter portion, and the short-diameter portion is extended in the third direction to achieve simple insertion and positioning.

The dustproof member is disposed on an end surface of the slider body and the side cover to obtain It has a dustproof effect.

As described above, the conventional linear slider utilizes the ball retaining member to block the aforementioned ball, and it is possible to assist the ball to circulate in the circulation passage, so that the linear slider can be used for linear motion, but because the aforementioned ball retainer is opposed to the ball. The positioning relationship is simply using the short-diameter portion for simple insertion and fixation. In the operation process, once the slider is affected by external force vibration, the short-diameter portion of the ball retaining member is easily disengaged from the insertion, and the protective ball is lost. In the end, the ball is peeled off, which is a problem that is often used in the industry.

The slider having the elastic retaining device is disposed in the first groove portion of the end cap by the elastic retaining device, and is hooked on the elastic retaining device by the third retaining portion of the ball retainer in the shape of a barb. The ball retainer is fixedly positioned on the end cap by the hooking action to urge the ball to be stably maintained in the normal position without falling off.

The slider having the elastic retaining device is embedded in the inclined side wall of the first groove portion by the two tapered side faces of the elastic retaining device, so that the elastic force is achieved by the hooking action The retaining device can be more stably embedded inside the tapered first groove portion, and the positioning is relatively firm.

Therefore, the slider of the present invention has an elastic retaining device for sliding on a linear track. The slider comprises a slider body, two reflow elements, a plurality of balls, two end caps, and a plurality of elastic retaining members. The device and a number of ball cages. The slider body has an open chute extending through the end faces along an axial direction. The reflow element is disposed in the open chute of the slider body and has a reflow body extending along the axial direction. The aforementioned balls are disposed inside the aforementioned reflow body. The end caps are symmetrically assembled on both end faces of the slider body, and have an open slot corresponding to the open chute, two first slot portions on both sides of an outer surface of the open slot, and two a second groove portion on one side of the groove portion, and two are located at the opening a third groove portion on one of the groove walls, wherein the first groove portion, the second groove portion and the third groove portion communicate with each other, the first groove portion and the third groove portion are oriented toward the axis The direction extends, and the second groove portion extends in a second direction disposed perpendicular to the axial direction. The elastic retaining device is disposed in the first groove portion and has a fixing portion located in the axial direction. The ball retainer has a first retaining portion extending in the axial direction and restricted to one side of each of the balls, and two extending from the opposite ends of the first retaining portion toward the second direction and disposed in the second slot a second holding portion of the portion, and a third holding portion that is bent outward from the second holding portion and extends in the axial direction and hooked on the fixing portion of the elastic holding device, and the first holding portion Both ends are respectively limited by the aforementioned third groove portion.

According to the above-mentioned slider having the elastic retaining device, the elastic retaining device is generally a V-shaped block, and further has two tapered oblique sides on both sides of the fixed portion, and one at both ends of the fixed portion. a first end surface that is inclined and a second end surface that is horizontal.

According to the present invention, the slider having the elastic retaining device, wherein the first groove portion of the end cap is disposed corresponding to the outer shape of the elastic retaining device, the first groove portion has a horizontal groove bottom, and the two grooves are inclined. a side groove wall, a circular front groove wall, and a rear groove wall.

According to the above-described slider having an elastic retaining device, wherein the ball retainer is a wire having a circular cross section, the first groove portion, the second groove portion and the third groove portion of the end cap and the elasticity The fixing portions of the holding device are each provided in a rounded shape.

According to the present invention, the slider having the elastic retaining device further includes two dustproof covers, and the outer side of the end cover is formed with a recessed groove, and the outer shape of the dustproof cover is corresponding to the recessed groove, and is embedded therein. .

According to the present invention, the slider having the elastic retaining device further includes a plurality of latching members, and the end cap further has a plurality of perforations penetrating on both sides, and the slider body has a plurality of the plurality of end faces. The locking hole is a through hole penetrating the end cover and locked to the locking hole of the slider body.

According to the above-described slider having the elastic retaining device, the elastic retaining device has a margin disposed in the first groove portion of the end cap.

According to the above-described slider having the elastic holding device, the length of the second holding portion of the ball retainer is shorter than the distance from the first holding portion to the third holding portion as viewed in the axial direction.

According to the above-described slider with elastic retaining device, the top end of the first end surface of the elastic retaining device is also connected with a horizontal guiding surface.

As described above, the ball retaining member of the prior art linear slider is easily separated from the clicker and causes the use of the ball to be detached. The slider having the elastic retaining device of the present invention has the following advantages and advantages, and is organized as follows:

1. The present invention is embedded in the first groove portion of the end cap by the elastic retaining device, and when the third retaining portion of the ball retainer is mounted thereon, in addition to the function of obtaining the positioning, The second retaining portion of the ball retainer generates an outward pulling force, causing the third retaining portion to generate a force in the direction of the arrow A, further causing the ball retainer to obtain the end cap (the elastic retaining device) The positioning effect of the hook makes the positioning more reliable and not easy to fall off.

2. Since the two tapered side faces of the elastic retaining device are also obliquely embedded with the side groove walls of the first groove portion, the thrust of the elastic retaining device in the direction of the arrow A is such that the elastic retaining device is It is firmly embedded in the inside of the first groove portion of the tapered shape, and the positioning is quite firm.

3. The first end surface of the elastic retaining device is disposed in an inclined shape, and when the third retaining portion of the ball retainer is hooked to the fixing portion of the elastic retaining device, the second retaining portion and the third retaining portion The curved corner portion is smoothly slidably disposed on the inclined first end surface without causing a jamming phenomenon to strengthen the hooking effect of the third holding portion on the fixing portion of the elastic holding device.

10‧‧‧ Slider

10‧‧‧ slider body

101‧‧‧ axis direction

102‧‧‧second direction

11‧‧‧ end face

12‧‧‧Open chute

121‧‧‧ slot wall

13‧‧‧Reflux section

14‧‧‧Keyhole

20‧‧‧Reflux components

21‧‧‧Return subject

211‧‧‧ end

22‧‧‧Return

23‧‧‧Reflow guide

24‧‧‧Return channel

30‧‧‧ balls

40‧‧‧End cover

41‧‧‧Open slot

411‧‧‧ inner surface

412‧‧‧ outer surface

413‧‧‧ slot wall

42‧‧‧Return end

43‧‧‧First groove

431‧‧‧ bottom

432‧‧‧ side wall

433‧‧‧ rear wall

434‧‧‧ front slot wall

44‧‧‧Second trough

45‧‧‧ third slot

46‧‧‧Perforation

47‧‧‧Inlay

50‧‧‧Elastic retaining device

51‧‧‧ Fixed Department

52‧‧‧Cone oblique side

53‧‧‧ first end face

54‧‧‧second end face

55‧‧‧ Guided surface

60‧‧‧Ball retainer

61‧‧‧First Maintenance Department

62‧‧‧Second Holding Department

63‧‧‧ Third Maintenance Department

64‧‧‧ corner

70‧‧‧Locks

80‧‧‧Dust cover

200‧‧‧linear orbit

L1‧‧‧ length

L2‧‧‧ distance

Figure 1 is a perspective view of a preferred embodiment of a slider having an elastic retaining device.

Fig. 2 is an exploded perspective view of the slider.

Figure 3 is an enlarged view of the end cap, the ball retainer and the elastic retaining device.

Fig. 4 is a perspective view showing the ball holder and the elastic holding device assembled inside the first groove portion.

FIG. 5 is a partial top view of the end cap, illustrating the elastic retaining device being embedded in the first groove portion and hooking the ball retainer to the fixing portion.

Referring to Figures 1 and 2, a preferred embodiment of a slider having an elastic retaining device for sliding onto a linear track 200 is illustrated. The slider 100 includes a slider body 10, two reflow elements 20, a plurality of balls 30, two end caps 40, a plurality of elastic retaining devices 50, and a plurality of ball retainers 60.

The slider body 10 has an open chute 12 extending through the end faces 11 in an axial direction 101, and a plurality of recirculation grooves 13 on the two groove walls 121 of the open chute 12.

The reflow element 20 is disposed in the open chute 12 of the slider body 10, and has a reflow body 21 extending along the axial direction 101, a return passage 22 extending through the reflow body 21, and two The return guide 23 on the both end portions 211 of the return main body 21, the return passage 22 of the return main body 21 and the two return guides 22 are connected to establish a return passage 24.

The ball 30 is disposed inside the reflow body 21 and circulates in the return passage 24 as the slider body 10 moves relative to the linear rail 200.

Referring to Figures 3 and 4, the end cap 40 is symmetrically assembled on the slider. The end faces 11 of the body 10 have an open groove 41 corresponding to the open chute 12, two return ends 42 on both sides of the inner surface 411 of the open groove 41, and two of the open slots 41. a first groove portion 43 on both sides of the outer surface 412, a second groove portion 44 on the side of the first groove portion 43, and a third groove portion 45 on the groove wall 413 of the open groove 41, and The first groove portion 43, the second groove portion 44 and the third groove portion 45 communicate with each other, and the first groove portion 43 and the third groove portion 45 extend toward the axial direction 101, and the second groove The portion 44 extends in a second direction 102 that is perpendicular to the axial direction 101. In this embodiment, referring to FIG. 5, the first groove portion 43 of the end cover 40 is substantially V-shaped, and has a horizontal groove bottom 431, two inclined side groove walls 432, and a circle. The front groove wall 433 of the arc, and a rear groove wall 434.

The elastic retaining device 50 has an outer shape corresponding to the shape of the first groove portion 43 and is generally a V-shaped block and is disposed in the first groove portion 43. The elastic retaining device 50 has a fixing portion 51 located in the axial direction 101, two tapered side surfaces 52 located on opposite sides of the fixing portion 51, and a first end surface 53 located at one of the opposite ends of the fixing portion 51 and A horizontal second end face 54. The top end of the first end surface 53 also engages with a horizontal guiding surface 55 to help guide the bent steel wire without jamming. The first groove portion 43, the second groove portion 44, and the third groove portion 45 of the end cap 40 and the fixing portion 51 of the elastic holding device 50 are both provided in a circular guide shape.

The ball retainer 60 is substantially inverted U-shaped and has a first holding portion 61 extending in the axial direction 101 and being restrained on the side of the ball 30, and two from the ends of the first holding portion 61 toward the first a second holding portion 62 extending in the second direction portion 102 and disposed in the second groove portion 44, and two bent outward from the second holding portion 62 and extending in the axial direction 101 and hooked on the elastic retaining device 50 The third holding portion 63 on the fixing portion 51, and both ends of the first holding portion 61 are respectively limited in the third groove portion 45. In this embodiment, the ball retainer 60 is a wire having a circular cross section. A corner portion 64 is formed at a right angle between the second holding portion 62 and the third holding portion 63.

In addition, the present invention further includes a plurality of locking members 70 and two dustproof covers 80, the foregoing The end cap 40 further has a plurality of perforations 46 extending through the two sides. The slider body 10 further has a plurality of locking holes 14 on the end faces 11, and the locking member 70 is a through hole 46 penetrating the end cap 40 and The locking hole 14 of the slider body 10 is locked to lock the end cover 40 to the slider body 10. A recess 47 is formed on the outer side surface 412 of the end cover 40. The dust cover 80 has an outer shape corresponding to the recess 47 and is embedded therein to prevent dust pollution.

Therefore, in the present invention, the slider 100 is assembled, when the two reflow elements 20 have been mounted in the open chute 12 of the slider body 10 (the balls 30 have been placed inside the return passage 24), and the end caps 40 are further The two end portions 11 of the slider body 10 are assembled and locked with the lock member 70, and then the elastic retaining device 50 is mounted on the side of the ball 30 and inserted by the third retaining portion 63. The first groove portion 43 is hooked on the fixing portion 51 of the elastic holding device 50. At this time, the first holding portion 61 is shielded on the side of the ball 30, and the second holding portion 62 is embedded. In the second groove portion 44, the two tapered side surfaces 52 of the elastic retaining device 50 are also embedded in the side groove wall 432 of the first groove portion 43 to obtain a good positioning relationship, and finally the dust cover is finally disposed. The 80 is mounted on the recess 47 of the aforementioned end cap 40 to complete the assembly.

It is to be noted that, as shown in FIG. 5, in the present embodiment, from the axial direction 101 (see FIG. 3), the length L1 of the second holding portion 62 of the ball retainer 60 is shorter than the first The distance L2 of the holding portion 61 to the third holding portion 63, so when the first holding portion 61 is restricted to the third groove portion 45 of the end cover 40, the second holding portion 62 is limited to the second groove portion In the case of 44, the third holding portion 63 is limited to the fixing portion 51 of the elastic holding device 50. At this time, the tension of the material of the steel wire of the ball retainer 60 itself can be utilized to provide a better restraining force.

In summary, compared with the existing linear slider, the ball retaining member is easily separated from the clicker and causes the use of the ball to be detached. The slider with the elastic retaining device of the present invention has the following advantages and advantages, and is organized as follows:

1. The present invention is embedded in the first groove portion 43 of the end cap 40 by the elastic retaining device 50, and the third retaining portion 63 of the ball retainer 60 is mounted thereon, except In addition to the effect of positioning, since the second holding portion 62 of the ball retainer 60 generates an outward pulling force (pulling outward in the second direction 102), the third holding portion 63 generates an arrow A direction. The force further causes the ball retainer 60 to obtain the positioning effect of the barbs on the end cap 40 (the elastic retaining device 50), making the positioning more reliable and not easy to fall off, as shown in Figures 3 to 5.

2. Since the two tapered side faces 52 of the elastic retaining device 50 are also obliquely embedded with the side groove walls 432 of the first groove portion 43, the thrust of the arrow A direction to the elastic retaining device 50 is just The more firmly the elastic retaining device 50 is embedded inside the tapered first groove portion 43, and the positioning is relatively firm.

3. The first end surface 53 of the elastic retaining device 50 is disposed in an inclined shape, and a leading surface 55 is formed at the top end of the first end surface. When the third holding portion 63 of the ball retainer 60 is hooked to the elastic portion When the fixing portion 51 of the device 50 is held, the corner portion 64 between the second holding portion 62 and the third holding portion 63 is smoothly slidably disposed on the inclined first end surface 53 and the guiding surface 55, and does not A jamming phenomenon is generated to enhance the hooking effect of the third holding portion 63 on the fixing portion 51 of the elastic holding device 50.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made by the applicant according to the scope of the patent application and the new description of the creation are all It should remain within the scope of this creation patent.

Claims (9)

A slider having an elastic retaining device for slidingly sliding on a linear track, the slider comprising: a slider body having an open chute extending along an axial direction through the end faces; two reflow elements are disposed In the open chute, and having a reflow body extending along the axial direction; a plurality of balls disposed inside the reflow body; and two end caps symmetrically assembled on both end faces of the slider body, and An open slot corresponding to the open chute, two first slot portions on two sides of an outer surface of the open slot, two second slot portions on one side of the first slot portion, and two slots in the open slot a third groove portion of the groove wall, the first groove portion, the second groove portion and the third groove portion are in communication with each other, and the first groove portion and the third groove portion extend toward the axial direction. The second groove portion extends in a second direction perpendicular to the axial direction; a plurality of elastic retaining means are disposed in the first groove portion and have a fixing portion in the axial direction; and Most ball cages and have a first holding portion extending in the axial direction and restricted to one side of each of the balls, and a second holding portion extending from the both ends of the first holding portion toward the second direction and disposed in the second groove portion, And a third holding portion that is bent outward from the second holding portion and extends in the axial direction and hooked on the fixing portion of the elastic holding device, and both ends of the first holding portion are respectively limited by the foregoing In the three slots. The slider of the elastic retaining device of claim 1, wherein the elastic retaining device is substantially a V-shaped block, and further has two tapered sides on opposite sides of the fixing portion, and is located at the fixed a slanted first end surface and a horizontal second end surface at both ends of the portion. The slider of claim 1, wherein the first groove portion of the end cap is corresponding to the outer shape of the elastic retaining device, and the first groove portion has a horizontal groove bottom. Two inclined side wall walls, one arc front groove wall, and one rear groove wall. The slider of claim 1, wherein the ball retainer is a circular wire having a circular cross section, the first groove portion, the second groove portion and the third groove of the end cover. Both the portion and the fixing portion of the elastic retaining device are provided in a rounded shape. The slider of the elastic retaining device of claim 1, further comprising a dust cover, wherein the outer cover of the end cover is formed with a recessed groove, and the outer shape of the dust cover is corresponding to the recessed groove. And embedded in it. The slider of claim 1, wherein the slider further comprises a plurality of latches, and the end cap has a plurality of perforations extending through the sides, the slider body having a plurality of The locking holes on the two end faces are inserted into the end caps and locked to the locking holes of the slider body. The slider of claim 1, wherein the elastic retaining means has a margin disposed in the first groove of the end cap. A slider having an elastic retaining device according to claim 1, wherein the length of the second retaining portion of the ball retainer is shorter than the first to third retaining portions when viewed from the axial direction distance. The slider of claim 2, wherein the top end of the first end surface of the elastic retaining device is further connected with a horizontal guiding surface.