JP3188326U - Small linear ball guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small linear ball guide having an extended service life. SOLUTION: The composition is mainly composed of a track 20, a slider main body 30, a first end lid 60, a second end lid 70, a first lid plate 40, a second lid plate 50, and a plurality of balls 81. After the installation of the first lid plate and the second lid plate, the first outer backflow half pipe 61 and the second outer backflow half pipe 71 are located on the outermost side of the slider main body, respectively, and in particular, the first lid plate. The first outer backflow pipe half pipe has an arcuate groove 62 recessed along the direction of the shaft, and the second outer backflow half pipe of the second lid plate has an arcuate convex portion 72 convex along the direction of the shaft. Each arc-shaped convex portion is provided so as to correspond to the arc-shaped groove and is brought into contact with each other. As a result, the structure is designed so that the first external backflow halfpipe and the second external backflow halfpipe are superimposed when they are connected, and the first external backflow halfpipe and the second external backflow halfpipe are The structural strength of the connecting portion is strengthened, and the impact force generated when the ball 81 passes through the ball channel causes the first outer backflow half pipe and the second outer backflow half pipe to separate from each other. prevent. [Selection diagram] Fig. 2

Description

  The present invention relates to a small linear ball guide.

  FIG. 1 is a schematic view illustrating a conventional linear ball guide. This structure is composed of a track 11, a slider body 12, two lid plates 13, and two end lids 14 and an end lid 15. The slider body 12 straddles the track 11 and slides along the extending direction. The ball 16 is provided on the side edge where the track 11 and the slider main body 12 contact each other, and the ball main body 12 is provided with a ball groove path of the ball 16, and the ball groove path is provided with a ball. Steel wire 17 is provided to hold 16 so as not to slide down, and lid plate 13, end lid 14 and end lid 15 are provided on both front and rear ends of slider body 12, and lid plate 13, end lid 14 and end lid are provided. The ball channel and ball groove formed by 15 together form a circulation path.

However, in the above-described conventional linear ball guide technology, the outer portion of the ball channel is composed of the outer backflow half tube 141 of the end lid 14 and the outer backflow half tube 151 of the other end lid 15. The structure of the connecting portion between the pipe 141 and the outer backflow half pipe 151 of the other end cap 15 is not strengthened.
For this reason, when the ball 16 passes through the ball channel, an impact force is applied to the outside, and the two outer backflow half tubes 141 and the outer backflow half tube 151 are separated from each other, and the balls 16 are separated from the ball channel. .

  Therefore, the present inventor considered that the above-mentioned drawbacks could be improved, and as a result of intensive studies, he came up with a proposal for the present invention to improve the problem reasonably and effectively.

  The present invention has been made in view of such conventional problems. In order to solve the above problems, the main object of the present invention is to provide a small linear ball guide.

  In order to solve the above-described problems and achieve the object, a small linear ball guide according to the present invention includes an orbit having an axial direction and a slider body installed to slide along the axial direction. And a first lid plate having two first inner backflow half pipes which are provided on one end surface of the slider body and are molded along the direction of the shaft, and a shaft direction which is provided on the other end surface of the slider body A second lid plate having two second inner backflow half tubes that are respectively molded along the first inner reflux half tube and connected to the first inner backflow half tube; Two first outer backflow half tubes each forming a first ball rolling channel together with the first inner backflow half tube, two first end surfaces provided on the end surfaces of the first outer backflow half tubes, and shafts from the first end surfaces Are recessed in the first outflow half-pipe along the direction of The second end plate has two arc-shaped grooves, each arc-shaped groove having a degree of arc between 90 degrees and 225 degrees, a second cover plate, molded along the direction of the axis, and a second inner backflow Two second outer backflow half tubes each forming a second ball rolling channel together with the half tube, a second ball rolling channel communicating with the first ball rolling channel, and a second outer backflow half tube end face There are two second end faces provided respectively, and two arc-shaped protrusions projecting from the second end face to the second outer backflow semi-tube along the axial direction, respectively, each arc-shaped protrusion corresponding to an arc-shaped groove The arc-shaped protrusions are in contact with each other, and the arc degree of each arc-shaped convex portion is between 90 degrees and 225 degrees so as to circulate and rotate to the second ball rolling channel and the second ball rolling channel. It comprises a plurality of balls provided in the.

  Preferably, the arc-shaped groove of the first end lid has an inner groove wall surface, the arc degree of the inner groove wall surface is between 90 degrees and 225 degrees, and the arc-shaped convex part of the second end cover has an outer arc surface. The outer arc surface is in close contact with the inner groove wall surface and the arc degree is between 90 and 225 degrees.

  Preferably, the first end lid further includes a plurality of auxiliary recessed grooves recessed in the first outer backflow semi-pipe from the first end surface along the direction of the axis, respectively, and the second end lid extends from the second end surface to the axis. Are further provided with a plurality of assistant protrusions protruding from the second outer backflow semi-pipe along the direction, and each assistant protrusion is inserted in correspondence with the auxiliary groove.

  Preferably, the first inner backflow half tube of the first lid plate and the first outer backflow half tube of the first end lid are connected by the corresponding hook-shaped portion and the hook-shaped groove, The two inner backflow half tubes and the second outer backflow half tube of the second end lid are connected to each other by a corresponding hook-shaped portion and a hook-shaped groove.

  According to the present invention, the structural strength between the outer backflow half tubes of the end cap is increased, and the service life of the small linear ball guide is extended.

It is the schematic explaining the conventional linear ball guide, and is the state which isolate | separates between two outer backflow half tubes. It is an inclination schematic diagram explaining the small linear ball guide by Example 1 of this invention. It is an inclination combination figure explaining the small linear ball guide by Example 1 of the present invention. FIG. 4 is a cross-sectional view illustrating a dotted line 4-4 in FIG. FIG. 5 is a cross-sectional view illustrating a dotted line 5-5 in FIG. It is an inclination schematic diagram explaining the small linear ball guide by Example 2 of this invention. It is an inclination combination figure explaining the small linear ball guide by Example 2 of the present invention. It is sectional drawing explaining the dotted line 8-8 of FIG. FIG. 9 is a cross-sectional view illustrating a dotted line 9-9 in FIG.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiment described below does not limit the contents of the present invention described in the claims of the utility model registration. In addition, all the configurations described below are not necessarily essential requirements of the present invention.

Hereinafter, the small linear ball guide of Example 1 is demonstrated based on FIGS.
As shown in FIGS. 2 to 5, the small linear ball guide of the first embodiment includes a track 20, a slider body 30, a first lid plate 40, a second lid plate 50, a first end lid 60, and a second end lid. 70, and a plurality of balls 81.
Here, the track 20 has an axial direction 21 and two holding surfaces 22 installed in the axial direction 21. The slider body 30 is installed to slide on the track 20 along the axial direction 21, and has two pin portions 31 for both sides of the track 20, and each pin portion 31 corresponds to the holding surface 22. And an outer surface 312 provided opposite the sliding surface 311.

The first lid plate 40 is provided on one end face of the slider main body 30 and has two first inner backflow half tubes 41 molded along the axial direction 21. Is inserted into the outer surface 312 of the two pin portions 31 of the slider body 30.
The second lid plate 50 is provided on the other end surface of the slider body 30 and is molded along the axial direction 21 and connected to the first inner backflow half pipe 41 respectively. Like the two second inner backflow half tubes 51, the tube 51 is inserted into the outer surface 312 of the two pin portions 31 of the slider body 30.

The first end cover 60 is provided on the first cover plate 40 and is molded along the axial direction 21 and forms the first ball rolling channel A together with the first inner backflow half pipe 41. The first outer backflow half pipe 61 is recessed in the first outer backflow half pipe 61 along the axial direction 21 from the two first end faces 611 and the first end face 611 respectively provided on the end face of the first half backflow pipe 61. The arcuate degree R1 of each arcuate groove 62 is 198 degrees (of course, it may be between 90 degrees and 225 degrees).
The arc degree R1 of the arc-shaped groove 62 according to the present embodiment has an inner groove wall surface 621, the arc degree of the inner groove wall surface 621 is 198 degrees, and one end of the channel A of the first ball rolling is the slider body 30. Connected to one end of the sliding surface 311.

The second end cover 70 is provided on the second cover plate 50 and is formed along the axial direction 21 and forms a second ball rolling channel B together with the second inner backflow half pipe 51. Backflow semi-tube 71, second ball rolling channel B connected to and communicated between channel A of the first ball rolling and the other end of the sliding surface 311 of the slider body 30, second outer backflow half-pipe 71, two second end surfaces 711 respectively provided on the end surface, two arc-shaped convex portions 72 projecting from the second end surface 711 along the axial direction 21 to the second outer backflow semi-tube 71, and each arc shape The arcuate grooves 62 are brought into contact with the projections 72, and the arcuate degree R2 of each arcuate projection 72 is 198 degrees (of course, it may be between 90 and 225 degrees).
The arc degree of the arc-shaped convex part 72 according to the present embodiment has an outer arc surface 721, which is in close contact with the inner groove wall surface 621 and has an arc degree of 198 degrees. In addition, a path formed by the second ball rolling channel B, the first ball rolling channel A, and the sliding surface 311 of the slider body 30 and the holding surface 22 of the track 20 forms a circulation path.

The plurality of balls 81 are provided so as to circulate and rotate on the second ball rolling channel B, the first ball rolling channel A, and the sliding surface 311 of the slider body 30. In order to prevent slipping when passing through the sliding surface 311 of 30, the second end cover 70 is provided with a steel wire 86 corresponding to the sliding surface 311 of the slider body 30 to hold the ball 81 so as not to slide down. .
Both the ball 81 and the steel wire 86 are conventional members, and the operation system is the same as that of the conventional one, and since the emphasis is not on the creation of the present invention, the detailed structure and operation system of these members will not be described in detail. .

The above is the description of the structure and other forms of each main member of the first embodiment of the present invention, and has at least the following effects.
After the first end lid 60 and the second end lid 70 are installed, the first outer backflow half tube 61 and the second outer backflow half tube 71 are respectively positioned on the outermost sides of the slider body 30, and in particular, the first end lid 60. The first outer backflow half tube 61 has an arc-shaped groove 62 recessed along the axial direction 21, and the second outer backflow half tube 71 of the second end cover 70 has an arc-shaped convex portion 72 along the axial direction 21. Each arcuate convex portion 72 is abutted to correspond to the arcuate groove 62.
Thereby, it has the structure design which overlaps after the 1st outer backflow half pipe 61 and the 2nd outer backflow half pipe 71 are connected, The connection location of the 1st outer backflow half pipe 61 and the 2nd outer backflow half pipe 71 And the first outer backflow half pipe 61 due to the outward impact force generated when the ball 81 passes through the first ball rolling channel A and the second ball rolling channel B. The separation from the second outer backflow half pipe 71 is prevented, and the purpose of extending the service life of the small linear ball guide is reliably achieved.

Hereinafter, the small linear ball guide of Example 2 is demonstrated based on FIGS.
Similarly, the small linear ball guide according to the second embodiment includes a track 20, a slider body 30, a first lid plate 40, a second lid plate 50, a first end lid 60, a second end lid 70, and a plurality of balls 81. Since the composition and the form and effect are the same as those of Example 1, the re-statement is omitted.

  The second embodiment is different from the first embodiment in that the first end lid 60 is recessed from the first end face 611 in the first outer backflow half pipe 61 along the axial direction 21 respectively. The second end lid 70 further includes a plurality of auxiliary convex portions 73 that are respectively provided on the second outer backflow semi-tube 71 along the axial direction 21 from the second end surface 711, The assistant convex part 73 is inserted in correspondence with the assistant concave groove 63, and is a point that further strengthens the structural strength of the connecting portion of the first outer backflow half pipe 61 and the second outer backflow half pipe 71.

In addition, the first inner backflow half pipe 41 of the first lid plate 40 and the first outer backflow half pipe 61 of the first end cover 60 are connected by a hook-shaped portion 411 and a hook-shaped groove 612, and The second inner backflow half pipe 51 of the two lid plate 50 and the second outer backflow half pipe 71 of the second end lid 70 are connected by a hook-shaped portion 511 and a hook-shaped groove 712.
Thereby, the structural strength of the connecting portion of the first inner backflow half tube 41 and the first outer backflow half tube 61 and the structural strength of the connecting portion of the second inner backflow half tube 51 and the second outer backflow half tube 71 are strengthened. The first inner backflow half pipe 41 and the first outer backflow half pipe due to the outward impact force generated when the ball 81 passes through the first ball rolling channel A and the second ball rolling channel B. It prevents that the connection location of 61 or the connection location of the 2nd inner backflow half pipe 51 and the 2nd outer backflow half pipe 71 peels.

  The above-described embodiments are merely for explaining the technical idea and features of the present invention, and are intended to allow those skilled in the art to understand the contents of the present invention and to carry out the present invention. It is not intended to limit the scope of the claims. Accordingly, improvements or modifications having various similar effects without departing from the spirit of the present invention shall be included in the following claims.

DESCRIPTION OF SYMBOLS 11 Track 12 Slider body 13 Cover plate 14 End cover 141 Outer backflow half tube 15 End cover 151 Outer backflow half tube 16 Ball 17 Steel wire 20 Track 21 Direction of axis 22 Holding surface 30 Slider body 31 Pin portion 311 Sliding surface 312 Outer side surface 40 First lid plate 41 First inner backflow half-pipe 411 Cone portion 50 Second lid plate 51 Second inner backflow half-pipe 511 Fence portion 60 First end lid 61 First outer backflow half tube 611 First One end face 612 Spiral groove 62 Arc-shaped groove 621 Inner groove wall surface 63 Assist concave groove 70 Second end lid 71 Second outer backflow half pipe 711 Second end face 712 Conical groove 72 Arc-shaped convex portion 721 Outer arc surface 73 Assist convex Part 81 Ball 86 Steel wire A Channel of the first ball rolling B Channel of the second ball rolling R1 Arc degree R2 Arc degree

Claims (4)

A trajectory having an axial direction;
A slider body installed to slide in a track along the direction of the axis;
A first lid plate having two first inner backflow half tubes provided on one end surface of the slider body and molded along the axial direction;
A second lid plate provided on the other end face of the slider body and having two second inner backflow half tubes molded along the direction of the axis and connected to the first inner backflow half tube, respectively;
Two first outer backflow half tubes, a first outer backflow half tube, which are provided on the first cover plate and are formed along the axial direction and form a first ball rolling channel together with the first inner backflow half tube. There are two first end surfaces respectively provided on the end surface and two arc-shaped grooves recessed in the first outer backflow semi-tube along the axial direction from the first end surface, and the arc degree of each arc-shaped groove is 90 degrees A first end lid that is between 225 degrees and
Two second outer backflow semi-tubes, which are provided on the second cover plate and are formed along the axial direction and form a second ball rolling channel with the second inner backflow half tube, respectively. The second ball rolling channel communicated with the channel, the two second end surfaces provided on the second outer backflow half tube end surface, respectively, and the second outer backflow half tube projecting from the second end surface along the axial direction, respectively. A second end cap having two arc-shaped protrusions provided, each arc-shaped protrusion contacting and corresponding to the arc-shaped groove, the arc degree of each arc-shaped protrusion being between 90 degrees and 225 degrees;
It is characterized by comprising a plurality of balls provided so as to circulate and rotate in the first ball rolling channel and the second ball rolling channel.
A small linear ball guide.   The arc-shaped groove of the first end lid has an inner groove wall surface, the arc degree of the inner groove wall surface is between 90 degrees and 225 degrees, the arc-shaped convex part of the second end cover has an outer arc surface, The small linear ball guide according to claim 1, wherein the arc surface is in close contact with the inner groove wall surface, and the arc degree is between 90 degrees and 225 degrees.   The first end lid further includes a plurality of auxiliary recessed grooves recessed in the first outer backflow semi-tube along the axial direction from the first end surface, and the second end lid extends from the second end surface in the axial direction. A plurality of assistant convex portions protruding from the second outer backflow semi-pipe along the second auxiliary back flow semi-tube, and the auxiliary convex portions are inserted in correspondence with the auxiliary concave grooves. Small linear ball guide as described.   The first inner backflow half tube of the first lid plate and the first outer backflow half tube of the first end lid are connected by the corresponding hook-shaped portion and the hook-shaped groove, 2. The small linear ball according to claim 1, wherein the counterflow half pipe and the second outer counterflow half pipe of the second end lid are coupled by a corresponding hook-shaped portion and a hook-shaped groove. guide.

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