CN103075422A

CN103075422A - Linear motion bearing

Info

Publication number: CN103075422A
Application number: CN2013100460890A
Authority: CN
Inventors: 胡旭辉
Original assignee: NINGBO SUNTHAI BEARING CO Ltd
Current assignee: Dalian Hanyih Seiko Enterprise Co., Ltd.
Priority date: 2013-02-05
Filing date: 2013-02-05
Publication date: 2013-05-01
Anticipated expiration: 2033-02-05
Also published as: CN103075422B

Abstract

The invention discloses a linear motion bearing, comprising a support (3) and a rolling body (4), wherein an upper seat retainer (1) and a lower seat retainer (2) are mounted on the support (3); openings (9) fitted with the shapes of the upper part and the lower part of the support (3) are respectively formed in the middle parts of the upper seat retainer (1) and the lower seat retainer (2); the upper seat retainer (1) is sleeved on the upper part of the support (3); the lower seat retainer (2) is sleeved on the lower part of the support (3); the top surfaces of the upper seat retainer (1) and the lower seat retainer (2) are respectively provided with an annular groove which is fitted with the shape of the rolling body (4); the rolling body (4) can be arranged between the upper seat retainer (1) and the lower seat retainer (2) in a rolling manner; the side of the rolling body (4) can be arranged on a waist type hole shaped periphery of the support (3) in a rolling manner; and a housing (5) is arranged on one side of the rolling body (4). The linear motion bearing disclosed by the invention has the advantages that the rolling body is further fixed; the structure of the linear motion bearing is firmer; the linear motion bearing can be used on a sliding body separately, and is reasonable in structure and artful in design; and the application range is effectively enlarged.

Description

Linear motion bearing

Technical field

The present invention relates to a kind of bearing manufacture technology field, especially a kind of linear motion bearing.

Background technique

Linear motion bearing is a kind of linear motion system with low-cost production, is used for unlimited formation with cylinder axis and is used.Because bearing ball and axle are and contact, so maneuvering load is little.Steel ball rotates with minimum surface friction drag, thereby can obtain high-precision easy motion.In rolling bearing, race ring is scrolled body separately, and in the slip guidance system, movably part is slided in static guide rails or axle.According to the type of guide track system, sliding layer is on the assembly of removable or good rigidly.Lubricant oil embeds sliding layer and reaches lubricated purpose.Motion bearings of the prior art; because the periphery of bearing does not have case; so poor stability a bit; not only soundness can not get ensureing; and in the process that motion bearings is used, often can occur because the load of bearing is overweight; and cause the motion bearings wearing and tearing, and in movement process jiggly state appears.For above-mentioned technical problem, a kind of motion bearings of necessary proposition overcomes the problems such as above-mentioned.

Summary of the invention

Technical problem to be solved by this invention be provide a kind of sound construction for above-mentioned prior art problem, fabricating cost is low and roll flexibly motion bearings.

The technological scheme that the present invention addresses the above problem is: a kind of linear motion bearing, comprise be used to the support of installing seat ring and bottom race, rolling element, described support longitudinal cross-section is cross, and it is poroid that the periphery of the downward projection of described support is kidney-shaped, the middle part of described top race and bottom race is respectively arranged with the opening suitable with the top of described support and lower shape, described top race is placed on the top of described support, described bottom race is placed on the bottom of described support, the bottom of described top race and the end face of bottom race are respectively arranged with the annular groove that adapts with the rolling element shape, described rolling physical efficiency is rolled and is arranged between top race and the bottom race, and the side of described rolling element can rollably place support to be on the poroid periphery of kidney-shaped, side at described rolling element is provided with case, and described case is with described top race, rolling element and bottom race vertical half or be coated on wherein more than half.

As improvement, the bottom periphery of described top race is that the upper circular cone that concaves forms annular groove, and the end face periphery of described bottom race forms annular groove for the lower circular cone that concaves.

As improvement, the end on projection of described case is the middle part and is " Contraband " font of circular arc part.

As improvement, described rolling element is ball.

As improvement, described rolling element is needle roller.

As improvement, described top race and bottom race are to be symmetricly set on the upper-lower position of support.

As improvement, be provided with the screw that fixes with connecting body on the described support.

As improvement, the two ends of described case are for being arranged at symmetrically the right and left of support.

Compared with prior art, the invention has the advantages that: the bottom periphery of described top race is that the upper circular cone that concaves forms annular groove, the end face periphery of described bottom race forms annular groove for the lower circular cone that concaves, described rolling element rollably is arranged between the annular groove of described top race and bottom race along described support housing, so so that rolling element can firmly be embedded between the groove of top race and bottom race, to such an extent as to can not run away everywhere, play the fixedly effect of rolling element, again owing to the side at described rolling element is provided with case, described case is with described top race, rolling element and bottom race vertical half or be coated on wherein more than half, this structure helps further fixedly rolling element, make the structure of linear motion bearing more firm, can be used for separately slide mass, and rational in infrastructure, design ingeniously, effectively enlarge application area.

Description of drawings

Fig. 1 is the stereogram of the embodiment of the invention one;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the right elevation of Fig. 1;

Fig. 4 is that Fig. 2 is along the sectional view of A-A;

Fig. 5 be Fig. 1 different amount stereogram;

Fig. 6 be Fig. 1 different amount stereogram;

Fig. 7 be Fig. 1 different amount stereogram;

Fig. 8 is the plan view of Fig. 1 exploded view;

Fig. 9 is the worm's eye view of Fig. 1 exploded view;

Figure 10 is the stereogram of the embodiment of the invention two;

Figure 11 is the plan view of Figure 10;

Figure 12 is the right elevation of Figure 10;

Figure 13 is that Figure 11 is along the sectional view of B-B;

Figure 14 is the stereogram of Figure 10 different amount;

Figure 15 is the stereogram of Figure 10 different amount;

Figure 16 is the stereogram of Figure 10 different amount;

Figure 17 is the plan view of Figure 10 exploded view;

Embodiment

Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.

Extremely shown in Figure 17 such as Fig. 1, a kind of linear motion bearing, comprise be used to installing the support 3 of seat ring 1 with bottom race 2, rolling element 4, described support 3 longitudinal cross-sections are cross, and it is poroid that the periphery of the downward projection of described support 3 is kidney-shaped, the middle part of described top race 1 and bottom race 2 is respectively arranged with the opening 9 suitable with the top of described support 3 and lower shape, described top race 1 is placed on the top of described support 3, described bottom race 2 is placed on the bottom of described support 3, the end face of the bottom of described top race 1 and bottom race 2 is respectively arranged with the annular groove that adapts with rolling element 4 shapes, described rolling element 4 can roll and be arranged between top race 1 and the bottom race 2, and the side of described rolling element 4 can rollably place support 3 to be on the poroid periphery of kidney-shaped, side at described rolling element 4 is provided with case 5, and described case 5 is with described top race 1, rolling element 4 and bottom race 2 vertical half or be coated on wherein more than half.The bottom periphery of described top race 1 is that the upper circular cone 6 that concaves forms annular groove, and the end face periphery of described bottom race 2 forms annular groove for the lower circular cone 7 that concaves.The end on projection of described case 5 is the middle part and is " Contraband " font of circular arc part.Described rolling element 4 is ball or needle roller.Described top race 1 and bottom race 2 are for to be symmetricly set on the upper-lower position of support 3.Be provided with the screw 8 that fixes with connecting body on the described support 3, the two ends of described case 5 are for being arranged at symmetrically the right and left of support 3.

Claims

1. linear motion bearing, comprise be used to installing the support (3) of seat ring (1) with bottom race (2), rolling element (4), it is characterized in that: described support (3) longitudinal cross-section is cross, and it is poroid that the periphery of the downward projection of described support (3) is kidney-shaped, the middle part of described top race (1) and bottom race (2) is respectively arranged with the opening (9) suitable with the top of described support (3) and lower shape, described top race (1) is placed on the top of described support (3), described bottom race (2) is placed on the bottom of described support (3), the end face of the bottom of described top race (1) and bottom race (2) is respectively arranged with the annular groove that adapts with rolling element (4) shape, described rolling element (4) can roll and be arranged between top race (1) and the bottom race (2), and the side of described rolling element (4) can rollably place support (3) to be on the poroid periphery of kidney-shaped, side at described rolling element (4) is provided with case (5), and described case (5) is with described top race (1), rolling element (4) and bottom race (2) vertical half or be coated on wherein more than half.

2. motion bearings according to claim 1, it is characterized in that: the bottom periphery of described top race (1) is that the upper circular cone (6) that concaves forms annular groove, and the end face periphery of described bottom race (2) forms annular groove for the lower circular cone (7) that concaves.

3. motion bearings according to claim 2 is characterized in that: be " Contraband " font of circular arc part in the middle part of the end on projection of described case (5) is.

4. arbitrary described motion bearings in 3 according to claim 1, it is characterized in that: described rolling element (4) is ball.

5. arbitrary described motion bearings in 3 according to claim 1, it is characterized in that: described rolling element (4) is needle roller.

6. arbitrary described motion bearings in 3 according to claim 1 is characterized in that: described top race (1) and bottom race (2) are for to be symmetricly set on the upper-lower position of support (3).

7. arbitrary described motion bearings in 3 according to claim 1 is characterized in that: be provided with the screw (8) that fixes with connecting body on the described support (3).

8. arbitrary described motion bearings in 3 according to claim 1, it is characterized in that: the two ends of described case (5) are for being arranged at symmetrically the right and left of support (3).