CN212928539U

CN212928539U - Sewing machine bearing with positioning edge

Info

Publication number: CN212928539U
Application number: CN202021659309.9U
Authority: CN
Inventors: 胡百君
Original assignee: Cixi Sihai Bearing Co ltd
Current assignee: Cixi Sihai Bearing Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-04-09
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses a take sewing machine bearing on location limit, including the inner circle and the outer lane of coaxial setting, roll between inner circle and the outer lane and be provided with a plurality of balls, be provided with two sealing washers between inner circle outer wall and the outer lane inner wall, two sealing washers are located the ball both sides, and the constant head tank has been seted up to the outer wall circumference of outer lane, and the constant head tank is embedded to be equipped with the location limit, and the setting is radially outwards extended along the outer lane in location, and the location breach has been seted up to. The utility model has the advantages of it is following and effect: the new mechanical structure of this scheme utilization adopts the mode that sets up outstanding location limit at the outer wall of bearing inner race, and offers the location breach on the limit of location, has the effect of being convenient for snatch, difficult landing, more stable.

Description

Sewing machine bearing with positioning edge

Technical Field

The utility model relates to a bearing technical field, in particular to take sewing machine bearing on location limit.

Background

The bearing is an important part in the modern mechanical equipment, and the main function of the bearing is to support a mechanical rotating body, reduce the friction coefficient in the movement process of the mechanical rotating body and ensure the rotation precision of the mechanical rotating body.

The common main structure of the bearing comprises an inner ring and an outer ring which are coaxially arranged, a plurality of balls are arranged between the inner ring and the outer ring in a rolling manner, a sealing ring is arranged on an annular end face formed between the inner ring and the outer ring, the inner side of the sealing ring is in sealing fit with the inner ring, the outer side of the sealing ring is in sealing fit with the outer ring, and the outer wall of the outer ring is a smooth arc-shaped surface.

However, the bearing has the following disadvantages: in the course of working, when adopting the manipulator to snatch the bearing, because its outer lane lateral wall is more smooth, have the inconvenient problem of snatching and easy landing.

Disclosure of Invention

The utility model aims at providing a sewing machine bearing on area location limit adopts the outer wall at the bearing inner race to set up outstanding location limit, has the effect of being convenient for snatch, be difficult for the landing, more stable.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a take sewing machine bearing on location limit, includes the inner circle and the outer lane of coaxial setting, rolls between inner circle and the outer lane and is provided with a plurality of balls, is provided with two sealing washers between inner circle outer wall and the outer lane inner wall, and two sealing washers are located the ball both sides, and the constant head tank has been seted up to the outer wall circumference of outer lane, and the embedded location limit that is equipped with of constant head tank, location border radially outwards extend the setting along the outer lane, and the location breach has been.

Through adopting above-mentioned technical scheme, in the assembling process, because the location limit is embedded in the constant head tank, and the outer wall of the relative outer lane in outside border on location limit is outstanding, when the manipulator snatchs the bearing, can snatch in the location edge, it is more convenient to snatch, relative prior art, snatchs the in-process and is difficult for the landing, and the location breach can play the effect of location when the assembly, has the effect of being convenient for snatch, being difficult for the landing, more stable.

The utility model discloses a further set up to: the arc angle of the positioning notch is set to be 5-10 degrees.

The utility model discloses a further set up to: two parallel annular grooves are formed in the circumferential direction of the inner wall of the inner ring, and rubber rings are embedded in the two annular grooves.

By adopting the technical scheme, when the inner ring is arranged on the connecting shaft, the rubber ring is attached to the outer wall of the connecting shaft, the rubber ring can play a role in preventing looseness to a certain extent, and in addition, two parallel rubber rings are arranged, so that the stability is higher; on the other hand, when the inner ring is installed on the connecting shaft, radial load force is generated on the inner side wall of the inner ring and finally acts on the ball, and the arrangement of the rubber ring can offset the radial load force to a certain extent and has a certain protection effect on the ball.

The utility model discloses a further set up to: the distance from the locating edge to one of the end faces of the outer ring is 1/4 the total height of the outer ring.

Through adopting above-mentioned technical scheme, the distance of location limit and another terminal surface of outer lane is great relatively, and the manipulator of being convenient for inserts when snatching.

The utility model discloses a further set up to: the sealing ring comprises an annular framework, an annular sealing rubber body is arranged around the framework, an inner lip is arranged on the side wall of an inner ring of the sealing rubber body, an outer lip is arranged on the side wall of an outer ring of the sealing rubber body, a first notch is formed in the outer wall of the inner ring, a second notch is formed in the inner wall of the outer ring, the inner lip is in sealing fit with the first notch, and the outer lip is in sealing fit with the second notch; a chamfer inclined plane is arranged between the outer wall of the outer lip and the sealing rubber body, a sealing ring is integrally formed outwards on the chamfer inclined plane, and the cross section of the sealing ring is L-shaped; the inner lip comprises a connecting part and an upper inner lip and a lower inner lip which are integrally formed on the connecting part, and the connecting part is connected to the inner side wall of the sealing rubber body.

Through adopting above-mentioned technical scheme, the setting on chamfer inclined plane is convenient for install the sealing washer in the second notch, when the outer lip of sealing washer is installed in the second notch, the oblique lateral wall of outer lip upper end and second notch offsets and realizes sealed cooperation, the sealing ring offsets with the vertical lateral wall of second notch and realizes sealed cooperation, when the inner lip of sealing washer is installed in the first notch of inner circle, its main contact stress derives from the thickness of inner lip, avoid the inner lip direct with first notch contact interference, the inner circle friction torque's of being convenient for control. Go up the interior lip top and support with the oblique lateral wall of first notch and realize sealed cooperation, the bottom of interior lip supports tightly with the lower lateral wall of first notch and realizes sealed cooperation down, so, between outer lip and the outer lane, the effect of multi-seal has between interior lip and the inner circle, and the interior lip has the wearing and tearing compensation function, enable interior lip and first notch and remain good contact throughout, sealing effect is better, thereby guarantee the sealing washer to dustproof, waterproof, the requirement of leak protection fat performance, and interior, the area of contact between the notch of outer lip and bearing is less, the bearing rotates the in-process, wearing and tearing are less, long service life.

The utility model discloses a further set up to: the outer side wall of the lower inner lip is provided with an annular sealing sheet along the radial direction.

Through adopting above-mentioned technical scheme, the gasket offsets with the vertical lateral wall of first notch and realizes sealed cooperation.

The utility model discloses a further set up to: a pressure relief groove is formed between the outer lip and the sealing rubber body, and the pressure relief groove is annularly formed.

Through adopting above-mentioned technical scheme, set up pressure relief groove, increased the friction torque of outer lip to the outer lane under the condition that reduces outer lip and turn over the edge to can reduce the sealing washer along with the possibility of outer lane follow-up rotation.

The utility model discloses a further set up to: the lower inner lip is provided with an annular groove, and the end surfaces of two sides of the annular groove are both arc-shaped.

Through adopting above-mentioned technical scheme, form the sealed isolation of two pass between the bottom of lower inner lip and the first notch diapire of inner circle, the ring channel can play interim oil storage effect, and sealed effect is better, in addition, because terminal surface is arc under the both sides of ring channel, convex top and the sealed cooperation of first notch diapire, area of contact between the two is less for the bearing rotates the in-process, and relative wear is littleer.

The utility model discloses a further set up to: a lower end groove is formed among the sealing rubber body, the connecting part and the lower inner lip, and an upper end groove is formed among the sealing rubber body, the connecting part and the upper inner lip.

The utility model discloses a further set up to: the cross-section of lower extreme recess sets up to trapezoidal, is provided with a plurality of strengthening ribs in the lower extreme recess, and the one end of strengthening rib is fixed in the external wall of the sealing rubber body, and the other end of strengthening rib is fixed in the inner wall of lower lip, and the whole slope of strengthening rib sets up.

Through adopting above-mentioned technical scheme, the setting of strengthening rib has the supporting role to interior lip down for the gasket of interior lip lateral wall can have better tight power of supporting all the time with between the vertical wall of the first notch of inner circle down, thereby improves sealed effect.

To sum up, the utility model discloses following beneficial effect has:

1. the outer wall of the bearing outer ring is provided with the protruding positioning edge, and the positioning edge is provided with the positioning notch, so that the clamping device has the effects of being convenient to grab, not easy to slide and stable;

2. the mode that two parallel rubber rings are arranged on the inner wall of the inner ring in the circumferential direction is adopted, so that the anti-loosening effect can be achieved to a certain extent, and in addition, the ball bearing is protected to a certain extent;

3. the sealing ring with the inner lip and the outer lip is adopted, and multiple sealing is carried out between the outer lip and the outer ring and between the inner lip and the inner ring, so that the sealing ring has better sealing property.

Drawings

Fig. 1 is a schematic diagram of the overall structural relationship of the embodiment.

Fig. 2 is a sectional view of the embodiment.

Fig. 3 is an enlarged view of the area a in fig. 2.

Fig. 4 is a schematic structural relationship diagram of the sealing ring in the embodiment.

In the figure: 1. an inner ring; 11. an annular groove; 12. a rubber ring; 13. a first notch; 2. an outer ring; 21. positioning a groove; 22. positioning the edge; 23. positioning the notch; 24. a second notch; 3. a ball bearing; 4. a seal ring; 41. a framework; 42. a sealing rubber body; 43. an inner lip; 44. an outer lip; 45. chamfering the inclined plane; 451. a seal ring; 46. a pressure relief groove; 47. a connecting portion; 471. an upper inner lip; 472. a lower inner lip; 473. sealing the sheet; 48. an annular groove; 5. a lower end groove; 51. reinforcing ribs; 6. the upper end is provided with a groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. For convenience of explanation, the below-described "upper" and "lower" of the seal ring are in the same direction as the upper end seal ring in fig. 3.

A bearing with a positioning edge for a sewing machine is shown in figures 1-3 and comprises an inner ring 1 and an outer ring 2 which are coaxially arranged, a plurality of balls 3 are arranged between the inner ring 1 and the outer ring 2 in a rolling manner, two sealing rings 4 are arranged between the outer wall of the inner ring 1 and the inner wall of the outer ring 2, and the two sealing rings 4 are positioned on two sides of the balls 3. The constant head tank 21 has been seted up to outer wall circumference of outer lane 2, and the embedded location limit 22 that is equipped with of constant head tank 21, location limit 22 have seted up location breach 23 along the radial outside setting that extends of outer lane 2 on the location limit 22, and in this embodiment, the arc angle of location breach 23 sets up to 10, and the distance of location limit 22 to the up end of outer lane 2 is 1/4 of outer lane 2 total height.

As shown in fig. 1-3, two parallel annular grooves 11 are formed in the inner wall of the inner ring 1 in the circumferential direction, rubber rings 12 are embedded in the two annular grooves 11, when the inner ring 1 is mounted on a connecting shaft, the rubber rings 12 are attached to the outer wall of the connecting shaft, the rubber rings 12 can play a role in preventing loosening to a certain extent, and in addition, the two parallel rubber rings 12 are arranged, so that the stability is high; on the other hand, when the inner ring 1 is installed on the connecting shaft, radial load force is generated on the inner side wall of the inner ring 1 and finally acts on the balls 3, and the rubber ring 12 can offset the radial load force to a certain extent and has a certain protection effect on the balls 3.

As shown in fig. 1-3, the sealing ring 4 includes an annular framework 41, an annular sealing rubber body 42 is disposed around the framework 41, an inner lip 43 is disposed on a side wall of an inner ring 1 of the sealing rubber body 42, an outer lip 44 is disposed on a side wall of an outer ring 2 of the sealing rubber body 42, a first notch 13 is disposed on an outer wall of the inner ring 1, a second notch 24 is disposed on an inner wall of the outer ring 2, the inner lip 43 is in sealing fit with the first notch 13, and the outer lip 44 is in sealing fit with the second notch 24; a chamfer inclined surface 45 is arranged between the outer wall of the outer lip 44 and the sealing rubber body 42, the sealing ring 451 is integrally formed outwards on the chamfer inclined surface 45, the section of the sealing ring 451 is L-shaped, a pressure relief groove 46 is formed between the outer lip 44 and the sealing rubber body 42, the pressure relief groove 46 is annularly formed and is formed, the pressure relief groove 46 is formed, the friction torque of the outer lip 44 to the second notch 24 is increased under the condition that the turning edge of the outer lip 44 is reduced, and therefore the possibility that the sealing ring 4 rotates along with the outer ring 2 can be reduced; the inner lip 43 includes a connecting portion 47, and an upper inner lip 471 and a lower inner lip 472 integrally formed on the connecting portion 47, and the connecting portion 47 is connected to the inner side wall of the sealing rubber body 42. The outer side wall of the lower inner lip 472 is provided with an annular sealing sheet 473 along the radial direction, the sealing sheet 473 abuts against the vertical side wall of the first notch 13 to achieve sealing fit, the lower inner lip 472 is provided with an annular groove 48, and the end faces of two sides of the annular groove 48 are both arc-shaped. Form the sealed isolation of two pass between the bottom of lower inner lip 472 and the first notch 13 diapire of inner circle 1, ring channel 48 can play temporary oil storage effect, and sealed effect is better, in addition, because terminal surface is arc under ring channel 48's the both sides, convex top and the sealed cooperation of first notch 13 diapire, area of contact between the two is less for the bearing rotates the in-process, and relative wear is littleer.

The setting of chamfer inclined plane 45 is convenient for install sealing washer 4 in second notch 24, when sealing washer 4 outer lip 44 was installed in second notch 24, the inclined lateral wall of outer lip 44 upper end and second notch 24 supports mutually and realizes sealed cooperation, sealing ring 451 supports mutually with the vertical lateral wall of second notch 24 and realizes sealed cooperation, when the inner lip 43 of sealing washer 4 was installed in the first notch 13 of inner circle 1, its main contact stress derives from the thickness of inner lip 43, avoid inner lip 43 direct and first notch 13 contact interference, the control of the inner circle 1 friction torque of being convenient for. Go up the interior lip 471 top and support with the oblique lateral wall of first notch 13 and realize sealed cooperation, the bottom of interior lip 472 supports tightly with the lower lateral wall of first notch 13 and realizes sealed cooperation down, so, the effect of double seal has between outer lip 44 and the outer lane 2, the effect of triple seal has between interior lip 43 and the inner circle 1, and interior lip 43 has the wearing and tearing compensation function, enable interior lip 43 and first notch 13 and keep good contact throughout, the sealing action is better, thereby guarantee sealing washer 4 to dustproof, waterproof, the requirement of leak protection fat performance, and in, the area of contact between the notch of outer lip and bearing is less, the bearing rotates the in-process, wearing and tearing are less, long service life.

As shown in fig. 3 to 4, a lower end groove 5 is formed between the sealing rubber body 42, the connecting portion 47 and the lower inner lip 472, an upper end groove 6 is formed between the sealing rubber body 42, the connecting portion 47 and the upper inner lip 471, the cross section of the lower end groove 5 is trapezoidal, a plurality of reinforcing ribs 51 are arranged in the lower end groove 5, one ends of the reinforcing ribs 51 are fixed on the outer wall of the sealing rubber body 42, the other ends of the reinforcing ribs 51 are fixed on the inner wall of the lower inner lip 472, and the reinforcing ribs 51 are integrally arranged in an inclined manner. The arrangement of the reinforcing ribs 51 has a supporting effect on the lower inner lip 472, so that the sealing sheet 473 on the side wall of the lower inner lip 472 can always have better abutting force with the vertical wall of the first notch 13, and the sealing effect is improved.

The utility model discloses a basic operating principle does: in the assembling process, because location limit 22 imbeds in constant head tank 21, and the outside border of location limit 22 is outstanding than the outer wall of the relative outer lane 2, when the manipulator snatchs the bearing, can snatch on location limit 22, because the distance of terminal surface is great under location limit 22 and the outer lane 2, the manipulator of being convenient for inserts when snatching, it is more convenient to snatch, relative prior art, snatch the difficult landing of in-process, and location breach 23 can play the effect of location when the assembly, it snatchs to have to be convenient for, be difficult for the landing, more stable effect.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a take sewing machine bearing on location limit, includes inner circle (1) and outer lane (2) of coaxial setting, inner circle (1) with roll between outer lane (2) and be provided with a plurality of balls (3), inner circle (1) outer wall with be provided with two sealing washer (4), two between outer lane (2) inner wall sealing washer (4) are located ball (3) both sides, its characterized in that: the outer wall circumference of outer lane (2) has seted up constant head tank (21), the embedded location limit (22) that is equipped with in constant head tank (21), location limit (22) are followed outer lane (2) radially outwards extend the setting, location breach (23) have been seted up on location limit (22).

2. The bearing with the positioning edge for the sewing machine according to claim 1, wherein: the arc angle of the positioning notch (23) is set to be 5-10 degrees.

3. The bearing with the positioning edge for the sewing machine according to claim 1, wherein: two parallel annular grooves (11) are formed in the circumferential direction of the inner wall of the inner ring (1), and rubber rings (12) are embedded in the two annular grooves (11).

4. The bearing with the positioning edge for the sewing machine according to claim 1, wherein: the distance from the positioning edge (22) to one end face of the outer ring (2) is 1/4 of the total height of the outer ring (2).

5. The bearing with the positioning edge for the sewing machine according to claim 1, wherein: the sealing ring (4) comprises an annular framework (41), an annular sealing rubber body (42) is arranged around the framework (41), an inner lip (43) is arranged on the side wall of an inner ring (1) of the sealing rubber body (42), an outer lip (44) is arranged on the side wall of an outer ring (2) of the sealing rubber body (42), a first notch (13) is formed in the outer wall of the inner ring (1), a second notch (24) is formed in the inner wall of the outer ring (2), the inner lip (43) is in sealing fit with the first notch (13), and the outer lip (44) is in sealing fit with the second notch (24); a chamfer inclined plane (45) is arranged between the outer wall of the outer lip (44) and the sealing rubber body (42), a sealing ring (451) is integrally formed outwards on the chamfer inclined plane (45), and the cross section of the sealing ring (451) is L-shaped; the inner lip (43) comprises a connecting portion (47) and an upper inner lip (471) and a lower inner lip (472) which are integrally formed on the connecting portion (47), and the connecting portion (47) is connected to the inner side wall of the sealing rubber body (42).

6. The bearing with the positioning edge for the sewing machine as claimed in claim 5, wherein: the outer side wall of the lower inner lip (472) is provided with an annular sealing piece (473) along the radial direction.

7. The bearing with the positioning edge for the sewing machine as claimed in claim 5, wherein: a pressure relief groove (46) is formed between the outer lip (44) and the sealing rubber body (42), and the pressure relief groove (46) is annularly formed.

8. The bearing with the positioning edge for the sewing machine as claimed in claim 5, wherein: an annular groove (48) is formed in the lower inner lip (472), and the end faces of two sides of the annular groove (48) are both arc-shaped.

9. The bearing with the positioning edge for the sewing machine as claimed in claim 5, wherein: a lower end groove (5) is formed among the sealing rubber body (42), the connecting portion (47) and the lower inner lip (472), and an upper end groove (6) is formed among the sealing rubber body (42), the connecting portion (47) and the upper inner lip (471).

10. The bearing with the positioning edge of the sewing machine as claimed in claim 9, wherein: the cross-section of lower extreme recess (5) sets up to trapezoidal, be provided with a plurality of strengthening ribs (51) in lower extreme recess (5), the one end of strengthening rib (51) is fixed in the sealing rubber body (42) outer wall, the other end of strengthening rib (51) is fixed in lower inner lip (472) inner wall, just strengthening rib (51) whole slope sets up.