TWM531525U - Linear guideway - Google Patents

Description

Linear slide

This creation is about a linear slide, especially a ball-circulating linear slide.

The ball linear slide rail generally includes a slider and a slide rail, wherein a slide rail groove is disposed at a center of the bottom of the slider, and the slide rail groove is slidably spanned on the slide rail. A plurality of ball slides are accommodated between the rail groove and the slide rail, and a circulation passage for the ball circulation, so that the balls move in a cyclic manner between the ball slide and the circulation passage. A circulator must also be provided on the slider, the circulator providing a steering portion connected between the ball slide and the circulation passage, and a ball retainer for restricting the ball to the ball slide for The ball is formed in a state in which it can be cyclically rolled between the ball slide and the circulation passage.

The ball circulator used in the existing linear slide is usually a separate part from the slider body. When the linear slide is assembled, the circulator must be additionally assembled on the slider, thus increasing the procedure of assembly work. At the same time, the existing circulator must additionally provide a retainer that prevents the balls from coming off, thus increasing the number of parts.

In addition, in order to keep the ball circulation smooth, the steering portion of the circulator and the ball circulation hole must be accurately aligned. However, the steering portion of the existing linear slide is formed on the circulator, and the circulation passage is formed on the slewing. The block body, that is, the turning portion and the circulation passage are respectively formed on different components, so that the joint between the two is easy to be disengaged or misaligned, causing the ball to move between the turning portion and the circulation passage, causing the slider to move. Increased resistance, or ball wear.

For the above reasons. The disadvantages of using existing linear slides, how to The improvement of structural design to overcome the above-mentioned shortcomings has become one of the important topics to be solved by this undertaking.

The main purpose of this creation is to solve the problem that the assembly of the existing linear slide ball circulator is not easy, and the additional use of the ball retainer is required, and the problem that the steering portion and the ball circulation passage are easily offset is easily generated.

The present invention provides a linear slide rail, comprising: a slider, a bottom surface of the slider is recessed with a slide rail groove, the slide rail slot defines a long axis direction, and the slide rail slot can span Provided on a slide rail; a circulator, the circulator is coated on the slider by injection molding, the circulator includes two end portions, and is connected to the center between the two end portions a connecting portion, wherein the two end portions abut against the front side and the rear side of the slider, respectively, the central connecting portion is attached to the inner wall surface of the sliding rail groove; and a plurality of ball slides are respectively formed Between the two side walls of the rail groove and the central connecting portion of the circulator, a plurality of the ball slides respectively penetrate from the front side of the slider to the side along the long axis direction a rear side of the slider, a plurality of the ball slides can accommodate a plurality of balls inside; a plurality of outer channels, a plurality of the outer channels are disposed on the slider, and each of the outer channels is respectively One of the ball slides corresponds to each other and is located in the corresponding one a position outside the bead chute; a plurality of turning portions, wherein the plurality of the turning portions are respectively disposed at the two ends of the circulator between each of the ball chutes and corresponding to the ball chute a position between the openings of the outer passages, each of the deflecting portions has an arcuate guide groove, and the two ends of each of the arcuate guide grooves respectively correspond to the corresponding ball slide and the outer side The openings of the channels are coupled to each other such that a plurality of the balls are capable of being reciprocally rolled between the ball slide and the outer passage via the arcuate guide; wherein the circulator is located at each A plurality of positioning sleeves are respectively disposed at corresponding positions of the openings of the outer passages, and each of the positioning sleeves is respectively fitted to an inner side of an opening of each of the outer passages, and each of the positioning sleeves has an inner hole at a center thereof Each of the inner holes is respectively aligned with the corresponding outer channel and its Corresponding to the center of the arcuate guide groove.

In a preferred embodiment of the present invention, a plurality of the ball slides are respectively formed by a plurality of ball bearing surfaces respectively formed on two opposite inner sidewalls of the rail groove, and a plurality of grooves formed on the circulator The restricting track faces on the central connecting portion are formed in common. And the two of the limiting track surfaces of each of the ball slides are spaced apart from the edges of the corresponding ones of the ball bearing surfaces by a gap to form a gap, so that the plurality of balls can be adjacent to each other. The gap between the two restricting track faces is exposed.

The beneficial effect of the creation is that the assembly procedure of the slider can be simplified, the number of parts can be reduced, and the deflection of the directional and the outer passage of the circulator can be ensured, and the smoothness and reliability of the ball circulation can be improved.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and description, and are not intended to limit the creation.

10‧‧‧ Slider

11‧‧‧Slide rail slot

111‧‧‧Upper wall

112‧‧‧ side wall

12‧‧‧Dust sheet

20‧‧‧ Circulator

21‧‧‧ End

22‧‧‧Central Connection

221‧‧‧Upper connection

222‧‧‧ Side connection

23‧‧‧Steering Department

231‧‧‧ Curved guide

24‧‧‧ Positioning sleeve

30‧‧‧Road slide

31‧‧‧Ball bearing surface

32‧‧‧Restricted track surface

40‧‧‧Outer channel

41‧‧‧ positioning slot

50‧‧‧End cover

51‧‧‧ steering limit slot

52‧‧‧Lubricating sheet

53‧‧‧ Cover

60‧‧‧rails

70‧‧‧ balls

C‧‧‧Long-axis direction

Figure 1 is a perspective assembled view of the linear slide of the present invention.

Figure 2 is an exploded perspective view of the linear slide of the present invention.

Figure 3 is a three-dimensional combination of the slider and the circulator used in the creation of the linear slide.

Figure 4 is a perspective cross-sectional view of the circulator used in the creation of the linear slide.

Fig. 5 is a perspective sectional view showing the slider and the circulator used in the creation of the linear slide.

Fig. 6 is a front cross-sectional view showing the state in which the slider and the slide rail of the linear slide are combined.

Fig. 7 is a top cross-sectional view showing the state in which the slider and the slide rail of the linear slide are combined.

Referring to FIG. 1 to FIG. 7, the present invention provides a linear slide rail, which comprises: a slider 10, a circulator 20, and two end covers 50.

Wherein, the bottom surface of the slider is recessed with a sliding rail groove 11, and the center of the sliding rail groove 11 defines a long axis direction C. The rail groove 11 has an upper wall 111 and opposite side walls 112. The sliding rail slot 11 can be disposed on a sliding rail 60, and a plurality of balls 70 are accommodated between the sliding rail slot 11 and the sliding rail 60, so that the sliding block 10 can slide along the sliding rail 10 The rail 60 linearly reciprocates.

As shown in FIG. 2 and FIG. 5, the circulator 20 is made of an engineering plastic material and is coated on the slider 10 by injection molding. The circulator 20 has two end portions 21 and is connected to two. A central connecting portion 22 between the ends 21. Two of the end portions 21 are wrapped on the front side and the rear side of the slider 10, and the central connecting portion 22 is formed on the inner side of the rail groove 11 at the bottom of the slider 10, and is connected to Between the two end portions 21.

The central connecting portion 22 of the circulator 20 can be further divided into an upper connecting portion 221 and two side connecting portions 222. The upper connecting portion 221 is attached to the upper wall 111 of the sliding rail groove 11, and the two sides are connected with 222 portions. Then attached to the two side walls 112 of the rail groove 11.

In this embodiment, a plurality of ball slides 30 are respectively formed between the two side walls 112 of the slider 10 and the central connecting portion 22 of the circulator 20, and the plurality of ball slides 30 are respectively along the front side of the slider 10. A direction parallel to the long axis direction C is penetrated to the rear side of the slider 10, and each of the ball slides 30 can accommodate a plurality of the balls 70, and the balls 70 and the slide rails 60 are transmitted through the balls The lateral contact allows the slider 10 to be reciprocally displaced along the slide rail. At the same time, the slider 10 is disposed at a position adjacent to the outer side of each of the ball slides 30, and a plurality of outer passages 40 corresponding to the ball slides 30 are disposed, and are provided on both end portions 21 of the circulator 20 The steering portion 23 cooperates with the ball slide 30 and the outer passage 40 to form a plurality of ball passages for circulating the balls 70.

As shown in FIG. 4 , FIG. 5 and FIG. 6 , the ball slides 30 are respectively provided by a plurality of ball bearing surfaces 31 disposed on the slider 10 , and a plurality of central connecting portions 22 formed on the circulator 20 . The upper restricted track faces 32 are formed together. More specifically, in this embodiment, each of the ball slide rails 30 is composed of a ball bearing surface 31 and two restricting track faces 32 adjacent to both sides of the ball bearing surface 31. The ball bearing surface 31 and the limiting rail surface 32 are arcuate orbital surfaces, respectively, and the ball bearing surface 31 and the limiting rail surface 32 have a sectional shape that can match the outer diameter of the ball 70. Curved, so it can accommodate the balls 70 The bead bearing surface 31 and the surface of the restriction raceway surface 32 roll.

In this embodiment, a plurality of the ball bearing surfaces 31 are respectively formed at the upper edge and the lower edge of the sidewalls 112 of the rail slot 11, and the sides of the balls 70 are in contact with the side of the rail 60, and One side is in contact with the ball bearing surfaces 31, and when the slider 10 is under load and pressure is applied to the balls 70, the reaction force generated by the balls 70 acts on the ball bearing surfaces 31, Therefore, the slider 10 can maintain rolling contact through the balls 70 and the slide rails 60.

In this embodiment, the limiting track faces 32 are respectively formed on the central connecting portion 22 of the circulator 20 adjacent to the ball bearing surfaces 31, and at the same time, each two adjacent limiting track faces 32 are opposite to each other. The corresponding ball bearing surface 31 is separated from the edge of one side by a gap, so that a plurality of the balls can be exposed from the gap between the two adjacent limiting track faces 32, so that the balls can contact the slide rails. The side.

In this embodiment, the gap between the adjacent restriction track faces 32 is smaller than the diameter of the balls, so that it is possible to restrict the balls 70 from being detached from the gaps between the respective restriction track faces 32, thereby enabling the linear slide of the present creation to The structure using the ball holder is dispensed with.

The circulator 20 of the present creation allows the plurality of the balls 70 to circulate between each of the ball slides 30 and the corresponding outer passage 40 through the turning portion 23. As shown in FIG. 3 and FIG. 7, in this embodiment, a plurality of the turning portions 23 are respectively disposed on outer side surfaces of both end portions 21 of the circulator 20, and the positions of each of the turning portions 23 are respectively located at It corresponds to the ball slide 30 and the opening of the outer channel 40. Each of the guiding portions 23 has an arcuate guiding groove 231, and the arcuate guiding groove 231 has an arc-shaped cross-sectional shape matched with the plurality of balls, and each of the curved guiding grooves 231 is respectively respectively The openings of the corresponding ball slide 30 and the outer passage 40 are connected.

At the same time, as shown in FIG. 2 and FIG. 7, the two end covers 50 are respectively disposed on the front and rear sides of the slider 10 and the outer ends of the two end portions 21 of the circulator 20, and the two ends are The inner side surface of the cover 50 is respectively provided with a plurality of steering limiting slots 51 corresponding to the positions of the respective steering portions 23, and each of the steering limiting slots 51 and the curved guiding slot 231 of each of the turning portions 23 are respectively mutually Cooperating, a plurality of steering passages through which the balls 70 can pass are collectively defined. Therefore, the plurality of ball circulation passages are formed in common with the steering passages defined by the steering limit grooves 51 and the turning portion 23, and the ball slides 30 and the outer passages 40.

Another feature of the circulator 20 of the present invention is that the circulator 20 is respectively provided with a positioning sleeve 24 at the opening of each of the turning portions 23 connected to each of the outer passages 40, as shown in FIG. A positioning groove 41 having a diameter larger than the diameter of the outer channel 40 is respectively disposed at the opening of each of the outer channels 40, and each of the positioning sleeves 24 is respectively fitted into the positioning groove 41 at the opening of the corresponding outer channel 40. The inside, thus enabling each of the positioning sleeves 24 to be aligned with the opening of the corresponding outer channel 40.

Each of the positioning sleeves 24 has an inner hole, and the diameter of the inner hole of each positioning sleeve 24 matches the diameter of the plurality of balls 70, and the inner holes of the positioning sleeves 24 are respectively aligned with the corresponding outer channels. The center of the 40, and the center of the section of the arcuate guide groove 231 of the corresponding steering portion 23, so that the arcuate guide groove 231 of each of the turning portions 23 can be ensured and the corresponding outer passage 40 can be ensured through the positioning sleeves 24. The openings are aligned with each other and are not skewed.

In addition, as shown in FIG. 2, the linear slide rails of the present invention are further provided with a dustproof sheet 12 on the bottom sides of the slider 10 at the two sides of the slide rail slot 11, and the ends of the two dustproof sheets 12 can contact the slide rails 60. Both sides (shown in Figure 6) are used to reduce the entry of external impurities into the interior of the linear slide 60.

In addition, the linear slide rail of the present invention is further provided with two lubricating sheets 52 and a cover 53 on the outer side of the end cover 50 for closing the outer side surface of the end cover 50, and through the cover 53 and the lubricating sheet 52 and the slide rail. The outer side of the 60 is in contact to enhance the airtightness between the end cap 50 and the slide rail 60.

[Possible effects of the examples]

In summary, the beneficial effects of this creation are mainly as follows:

1. The circulator 20 and the slider 10 of the linear slide of the present invention are combined into one body, so that no additional circulator is needed, which simplifies the assembly of the linear slide.

2. The ball bearing rail 60 of the present invention is composed of the ball bearing surface 31 and the limiting track surface 32, and wherein the limiting track surface 32 has the effect of restricting the ball 70 from being able to disengage from the ball slide 30, so no additional ball holding is required. To achieve the goal of reducing parts.

3. The circulator 20 of the present invention is provided with a plurality of positioning sleeves 24 respectively at the opening connection positions of the turning portion 23 and the corresponding outer passage 40, and the opening of the turning portion 23 and the outer passage 40 can be aligned through the positioning sleeve 24 To prevent the occurrence of deviations, thus effectively improving the smoothness and reliability of the ball cycle.

The above description is only a preferred and feasible embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Therefore, any equivalent technical changes made by using the present specification and the contents of the schema are included in the scope of protection of the present creation. .

10‧‧‧ Slider

11‧‧‧Slide rail slot

111‧‧‧Upper wall

112‧‧‧ side wall

12‧‧‧Dust sheet

20‧‧‧ Circulator

21‧‧‧ End

22‧‧‧Central Connection

221‧‧‧Upper connection

222‧‧‧ Side connection

23‧‧‧Steering Department

231‧‧‧ Curved guide

24‧‧‧ Positioning sleeve

40‧‧‧Outer channel

41‧‧‧ positioning slot

50‧‧‧End cover

51‧‧‧ steering limit slot

52‧‧‧Lubricating sheet

53‧‧‧ Cover

C‧‧‧Long-axis direction

Claims (10)

A linear slide rail comprises: a slider, a bottom surface of the slider is recessed with a slide rail groove, the slide rail groove defines a long axis direction, and the slide rail groove can be spanned on a slide rail Above; a circulator, the circulator is coated on the slider by injection molding, the circulator includes two end portions, and a central connecting portion connected between the two ends, wherein two The end portions respectively abut the front side and the rear side of the slider, the central connecting portion is attached to the inner wall surface of the sliding rail groove; and a plurality of ball slides are respectively formed on the sliding rail Between the two side walls of the slot and the central connecting portion of the circulator, a plurality of the ball slides respectively penetrate from the front side of the slider to the rear side of the slider along the long axis direction a plurality of the ball slides can accommodate a plurality of balls inside; a plurality of outer channels, a plurality of the outer channels are disposed on the slider, and each of the outer channels is respectively slidably coupled with a plurality of the balls One of the tracks corresponds to each other and is located at a position outside the corresponding ball slide a plurality of steering portions, wherein the plurality of the steering portions are respectively disposed at the ends of the circulator between each of the ball slides and the opening of the outer passage corresponding to the ball slide Each of the guiding portions has an arcuate guiding groove, and two ends of each of the arcuate guiding grooves respectively engage with corresponding opening of the ball slide and the outer passage; Wherein the circulator is respectively disposed at a position corresponding to the opening of each of the outer passages, and a plurality of positioning sleeves are respectively disposed, and each of the positioning sleeves is respectively fitted inside the opening of each of the outer passages. The linear slide rail according to claim 1, wherein each of the ball slides is composed of one of the ball bearing surfaces and the two limiting rail surfaces adjacent to both sides of the ball bearing surface, and The cross-sectional shape of each of the ball bearing surface and the two adjacent limiting rail surfaces thereof is capable of cooperating with the outer diameter of the ball arc. The linear slide rail according to claim 2, wherein the two of the restricting track faces of each of the ball slides are spaced apart from the edges of the corresponding ones of the ball bearing faces by a gap to form a gap. A plurality of the balls are caused to be exposed from a gap between two adjacent ones of the restriction track faces. The linear slide of claim 3, wherein a width of the gap between the two adjacent ones of the restricted raceway faces is smaller than a diameter of the plurality of the balls. The linear slide of claim 4, wherein each of the arcuate guides has a cross-sectional shape that is an arc that can cooperate with the diameter of the balls. The linear slide of any one of claims 1 to 5, wherein each of the positioning sleeves has an inner hole, and each of the inner hole diameters matches a diameter of the plurality of balls, and The inner holes of each of the positioning sleeves are respectively aligned with the centers of the corresponding outer passages and the centers of the arcuate guide grooves of the corresponding turning portions. The linear slide of claim 6, wherein the central connecting portion of the circulator includes an upper connecting portion and two side connecting portions, wherein the upper connecting portion is attached to one of the sliding rail slots The wall and the two side connecting portions are respectively attached to the two side walls of the sliding rail groove. The linear slide rail according to claim 7, further comprising two end covers respectively disposed on an outer side of the front side and the rear side of the slider, wherein the inner side surfaces of the end caps correspond to the plurality of the circulators A plurality of steering limiting slots are respectively disposed at positions of the steering portions, and each of the steering limiting slots and the curved guiding slots of each of the steering portions cooperate to define a plurality of balls that can be used for the balls. Through the steering channel. The linear slide rail according to claim 8, wherein a bottom surface of the slider is disposed at a position on both sides of the slide rail groove to respectively provide a dustproof sheet. The linear slide rail according to claim 8, wherein the outer side of the two end covers is further provided with a lubricating sheet and a cover.