CN217177185U - Combination bearing and combination bearing with encoder - Google Patents

Abstract

The utility model relates to the technical field of bearings, in particular to a combined bearing, which comprises an upper bearing and a lower bearing, wherein the upper bearing comprises an upper bearing outer ring and an upper bearing inner ring; one end of the upper bearing inner ring is an inner ring piece, and the lower bearing comprises a lower bearing outer ring and a lower bearing inner ring; the other end of the upper bearing inner ring is a shaft element, penetrates through the lower bearing inner ring and is locked on the lower bearing inner ring by a locking sleeve; the upper bearing outer ring is tightly matched with the lower bearing outer ring. The combined bearing with the encoder further comprises an encoder assembly, the encoder assembly comprises a code wheel, a photoelectric assembly and an induction assembly, the code wheel is installed on the inner ring of the upper bearing, the induction assembly is installed on the inner bottom surface of the outer ring of the lower bearing, the photoelectric assembly comprises a light source and irradiates the code wheel, and the photoelectric assembly is in circuit connection with the induction assembly. According to the utility model discloses technical scheme has reduced the installation link with combination bearing integration mode, has ensured the inherent precision of bearing, effectively promotes rotatory stationarity, and the equipment is convenient with the dismantlement simultaneously, does benefit to the maintenance, and integrated structure saves space, and the appearance is graceful.

Description

Combination bearing and combination bearing with encoder

Technical Field

The utility model relates to a bearing technical field especially relates to a bearing that is used for bearing and takes encoder.

Background

The bearing is an important part in mechanical equipment, the combined application of the encoder and the bearing is more and more extensive, as shown in fig. 1, the existing bearing encoder comprises a bearing and an encoder assembly, the bearing comprises an upper bearing 1 and a lower bearing 2, the encoder assembly comprises an encoder seat 6, a code disc 42, a sensing assembly 43, an optoelectronic assembly 41, a code disc supporting sleeve 9, a copper shaft 7 and a protective cover 8, the optoelectronic assembly 41 and the sensing assembly 43 are installed on the encoder, the copper shaft 7 penetrates through and is in interference fit with the lower bearing 2, the encoder seat 6, the upper bearing 1 and the code disc supporting plate 9, and the code disc 42 is installed on the code disc supporting plate 9. The encoder has the advantages that the number of the installation surfaces is large, the processing is complex, a plurality of parts are installed together, the clearance during bearing assembly can not be quantitatively eliminated, the combination precision is poor, particularly, due to the design of the encoder seat, the size is large, the applicable scene is limited, and the matching mode between the copper shaft and the bearing is not favorable for disassembly and installation, so that the single part is damaged, the conditions of integral scrapping, incapability of local maintenance and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the non-integration that exists among the prior art, shortcoming such as combination precision is poor provides integration combination bearing and takes the combination bearing of encoder.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the combined bearing comprises an upper bearing and a lower bearing,

the upper bearing comprises an upper bearing outer ring and an upper bearing inner ring, and the upper bearing outer ring is matched with the upper bearing inner ring;

one end of the upper bearing inner ring is an inner ring piece, and the inner ring piece is matched with the upper bearing outer ring;

the lower bearing comprises a lower bearing outer ring, a lower bearing inner ring, a lower bearing outer ring and a lower bearing inner ring;

the other end of the upper bearing inner ring is a shaft element, the shaft element penetrates through the lower bearing inner ring and is fixed by a locking sleeve, and the locking sleeve is locked in the lower bearing inner ring, so that the shaft element is driven by the upper bearing inner ring to rotate, and the lower bearing inner ring is driven by the shaft element to rotate; the upper bearing outer ring is tightly matched with the lower bearing outer ring.

Through the upper bearing inner race both as the bearing inner race and connect 2 sets of bearings as the rotation axis to combine 2 sets of bearings ingenious as an organic whole through the lock sleeve, having left away the support of bearing frame or other parts, use the part less, reduced the installation link, ensured the inherent precision of bearing, improved the combination precision, rotatory stationarity has obtained effective promotion.

Preferably, the locking sleeve comprises a locking sleeve body and a frustum arranged on one side of the locking sleeve body, a central cylindrical hole is formed in the centers of the locking sleeve body and the frustum, a notch is formed in the circumferential direction of the locking sleeve and communicated with the central cylindrical hole, the shaft piece penetrates through the central cylindrical hole and is tightly held and fixed by the central cylindrical hole, and the periphery of the locking sleeve is locked on the inner hole wall of the lower bearing inner ring.

Preferably, the shape of the inner hole wall of the lower bearing inner ring is matched with the shape of the periphery of the locking sleeve, the radial contact surface of the lower bearing inner ring and the periphery of the locking sleeve is an end surface, and the locking sleeve is locked on the end surface of the lower bearing inner ring.

The notch on the circumference of the locking sleeve can be formed by cutting, when the locking sleeve is locked, the shaft part can be tightly embraced because the central cylindrical hole with the notch has certain tension, and when the central cylindrical hole of the locking sleeve body embraces and tightly embraces the shaft part of the upper bearing inner ring, the periphery of the frustum is slowly fit with the inner taper hole of the lower bearing inner ring along with the taper until the locking sleeve body moves to the end face of the lower bearing ring to be locked; the shaft piece is fixed by the locking sleeve when being held tightly by the locking sleeve, and when the locking sleeve is locked at the lower bearing inner ring, the shaft piece is also locked at (fixed) the lower bearing inner ring, and when the shaft piece is disassembled, the locking sleeve is only required to be disassembled, and the shaft piece can be slowly separated by utilizing the taper of the locking sleeve. So that the installation and the disassembly are very convenient.

Preferably, the locking sleeve body is provided with a first locking mounting hole, the lower bearing inner ring is provided with a corresponding second locking mounting hole, and the first locking mounting hole and the second locking mounting hole are connected through a nut to tighten the locking sleeve and the axle part.

Preferably, the side edge of the upper bearing outer ring is provided with a first concave-convex step, the side edge of the lower bearing outer ring is provided with a second concave-convex step, and the upper bearing outer ring and the lower bearing outer ring are tightly matched with the second concave-convex step through the first concave-convex step.

The outer ring of 2 sets of bearings is fixed, and meanwhile, the screws on the locking sleeves are rotated, so that the axial clearance of the bearings can be accurately eliminated, and the rotating precision is ensured. In addition, by means of the holding type structure, local parts can be replaced only by loosening and screwing screws, and maintenance is facilitated.

Preferably, a rubber gasket is arranged between the first concave-convex step of the upper bearing outer ring and the second concave-convex step of the lower bearing outer ring. The rubber gasket eliminates the gap between the upper bearing outer ring and the lower bearing outer ring due to the elastic material of the rubber gasket, and simultaneously, the matching position between the upper bearing outer ring and the lower bearing outer ring is better adjusted.

Preferably, the inner ring piece is provided with a channel, and the channel is used for placing the first steel ball.

The combined bearing with the encoder comprises an encoder assembly and the combined bearing, wherein the encoder assembly comprises a code wheel, a photoelectric assembly and an induction assembly, the code wheel is arranged on an inner ring of an upper bearing, the induction assembly is arranged on the inner bottom surface of an outer ring of a lower bearing, the photoelectric assembly comprises a light source, the light source irradiates the code wheel, and the photoelectric assembly is in circuit connection with the induction assembly. The integrated combined bearing ensures the rotation precision of the encoder.

Preferably, the periphery of the inner ring of the upper bearing is provided with a circumferential boss, and the code disc is bonded below the circumferential boss.

Preferably, the photoelectric assembly further comprises a photoelectric PCB, the light source is arranged on the back of the photoelectric PCB, the top surface of the outer ring of the upper bearing is provided with a through hole, the light source of the photoelectric PCB irradiates the code disc through the through hole, and the photoelectric PCB is in threaded connection with the outer ring of the upper bearing.

As preferred, response subassembly is equipped with the PCB board mounting hole including response PCB board and PCB board support column, bottom surface in the lower bearing inner race, and the response PCB board passes through PCB board support column and PCB board mounting hole cooperation. The effect of finely adjusting the position of the PCB can be achieved.

The code wheel is bonded on the circumferential boss of the upper bearing inner ring and coaxially rotates with the inner ring, the installation and the replacement are simple and convenient, meanwhile, the photoelectric PCB and the induction PCB are detachably arranged on the upper bearing outer ring and the lower bearing inner ring respectively, the assembly and the disassembly are convenient, the outer ring is fixed, the inner ring rotates, the encoder assembly is organically and flexibly matched, and the code wheel is effectively protected.

Preferably, the upper bearing outer ring and the lower bearing outer ring form an outlet hole. The circuit structure is arranged in the combined bearing and is connected with an external circuit through a small wire outlet hole, so that the attractiveness of the bearing is not influenced, and the whole bearing is small in design.

According to the technical scheme of the utility model, will reduce the installation link through combination bearing integration mode, ensure the inherent precision of bearing, improve the combination precision, rotatory stationarity has obtained effective promotion. The processing links are reduced, and the material is saved. The assembling and disassembling are convenient, the maintenance is facilitated, and meanwhile, the bearing, the PCB and the code disc are integrated into a whole, so that the space is saved, and the appearance is attractive.

Drawings

FIG. 1 is a schematic view of a conventional composite bearing;

FIG. 2 is a schematic diagram of an embodiment of a combined bearing with an encoder;

FIG. 3 is an exploded view of the combined bearing of the embodiment;

FIG. 4 is an exploded view of a combination bearing with encoder according to an embodiment;

FIG. 5 is a sectional view of a combination bearing with an encoder according to an embodiment;

FIG. 6 is a schematic structural diagram of an upper bearing inner ring in the embodiment;

FIG. 7 is a schematic structural view of the locking sleeve in the embodiment;

fig. 8 is an axial cross-sectional view of the locking sleeve of the embodiment.

The names of the parts indicated by the numerical references in the drawings are as follows:

1-an upper bearing; 11-upper bearing outer race; 12-upper bearing inner race; 13-a first sealing ring; 14-a first holder; 15-a first steel ball; 16-a second sealing ring; 111-a first concave-convex platform; 112-through holes; 121-inner ring member; 122-a shaft member; 123-a circumferential boss; 1211-a first circular axis; 1212-a second circular axis;

2-a lower bearing; 21-lower bearing outer race; 22-lower bearing outer race; 23-a third sealing ring; 24-a second cage; 25-a second steel ball; 26-a fourth seal ring; 221-a second locking mounting hole; 222-an end face;

3-locking sleeve; 31-a frustum; 32-central cylindrical hole; 33-a notch; 34-a first lock mounting hole; 35-determining a thread hole;

5-a wire outlet hole; 6-encoder seat; 7-coaxial; 8-a protective cover; 9-code disc supporting disc; 10-a rubber gasket;

41-an optoelectronic component; 42-code disc; 43-a sensing component; 431-PCB board support posts;

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings 1-8 and the detailed description below:

example 1

The combined bearing comprises an upper bearing 1 and a lower bearing 2, wherein the upper bearing 1 comprises an upper bearing outer ring 11, an upper bearing inner ring 12, a first sealing ring 13, a first retaining frame 14, a first steel ball 15 and a second sealing ring 16, and the first retaining frame 14 uniformly separates the first steel ball 15 and arranges the first steel ball 15 in a channel of the upper bearing outer ring 11 and the channel of the upper bearing inner ring 12.

One end of the upper bearing inner ring 12 is an inner ring part 121 and is matched with the upper bearing outer ring 11; the lower bearing 2 comprises a lower bearing outer ring 21, a lower bearing inner ring 22, a third sealing ring 23, a second retainer 24, second steel balls 25 and a fourth sealing ring 26, wherein the second retainer 24 uniformly separates the second steel balls 25 and arranges the second steel balls in the channels of the lower bearing outer ring 21 and the lower bearing inner ring 22, the inner ring part 121 substantially acts as a bearing inner ring, and the channel of the upper bearing inner ring 12 is arranged on the inner ring part 121.

The other end of the upper bearing inner ring 12 is a shaft element 122 which passes through the lower bearing inner ring 22 and is locked on the lower bearing inner ring 22 by the locking sleeve 3; the upper bearing outer ring 11 is tightly fitted with the lower bearing outer ring 21.

In this embodiment, the locking sleeve 3 includes a locking sleeve body and a frustum 31 disposed on one side of the locking sleeve body, a central cylindrical hole 32 is formed between the locking sleeve body and the frustum 31, a notch 33 is formed in the circumferential direction of the locking sleeve 3, the notch 33 is communicated with the central cylindrical hole 32, the central cylindrical hole 32 holds the shaft 12 of the upper bearing inner ring 12 to fix the shaft 122, and the periphery of the locking sleeve 3 is locked on the inner hole wall of the lower bearing inner ring 22.

The lock sleeve 3 is also provided with 2 thread holes 35, and the thread holes 35 are provided with screws. The shaft element 121 comprises a first circular shaft 1211 and a second circular shaft 1212, the first circular shaft having a larger diameter than the second circular shaft, the second circular shaft 1212 having a height matching the thickness of the upper bearing inner ring 22 such that the shaft element is a moderate size fit with the lower bearing inner ring 22.

During the equipment, only need to assemble upper bearing 1 and lower bearing 2 respectively, lock the shaft part 121 of upper bearing inner race 12 in the lower bearing inner race through lock sleeve 3 again and can form integrated combined bearing, when changing parts or dismantling, only need 2 screws on the 2 thread holes on the back-up lock sleeve 3 can separate.

Example 2

On the basis of embodiment 1, the shape of the inner hole wall of the lower bearing inner ring 22 is matched with the shape of the periphery of the locking sleeve 3, the radial contact surface between the lower bearing inner ring 22 and the periphery of the locking sleeve 3 is an end surface 222, and the locking sleeve 3 is locked on the end surface 222 of the lower bearing inner ring 22.

Example 3

In the combined bearing, on the basis of embodiment 1, a first locking mounting hole 34 is formed in the locking sleeve body, a corresponding second locking mounting hole 221 is formed in the lower bearing inner ring 22, and the first locking mounting hole 34 and the second locking mounting hole 221 are connected through a nut to tighten the locking sleeve 3 and the shaft 122.

The side edge of the upper bearing outer ring is provided with a first concave-convex step 111, the side edge of the lower bearing outer ring is provided with a second concave-convex step 211, and the upper bearing outer ring 11 and the lower bearing outer ring 21 are tightly matched with the second concave-convex step 211 through the first concave-convex step 111 and are fastened in a concave-convex matching mode. A rubber gasket 10 is arranged between the first concave-convex step 111 of the upper bearing outer ring and the second concave-convex step 211 of the lower bearing outer ring.

The locking sleeve and the lower bearing inner ring are further fastened through an external nut, and meanwhile, the upper bearing outer ring 11 is matched with the concave-convex step of the lower bearing outer ring 21, so that the axial clearance of the bearing is accurately eliminated, and the rotating precision is ensured. Meanwhile, the rubber gasket 10 is additionally arranged, the gap between the upper bearing outer ring and the lower bearing outer ring is eliminated by the soft elastic material of the rubber gasket, and the matching position between the upper bearing outer ring and the lower bearing outer ring is better adjusted.

Example 4

The combination bearing with the encoder comprises the combination bearing in the above embodiment, and further comprises an encoder assembly, wherein the encoder assembly comprises a code wheel 42, an optoelectronic assembly 41 and a sensing assembly 43, the code wheel 42 is mounted on the inner ring 12 of the upper bearing, the sensing assembly 43 is mounted on the inner bottom surface of the outer ring 21 of the lower bearing, the optoelectronic assembly comprises a light source and irradiates the code wheel 42, and the optoelectronic assembly 41 is in circuit connection with the sensing assembly.

Example 5

In the combined bearing with the encoder, on the basis of embodiment 4, the outer periphery of the inner ring 12 of the upper bearing is provided with a circumferential boss 123, and the code wheel 42 is adhered below the circumferential boss 123. The optoelectronic component 41 further includes an optoelectronic PCB, the light source is disposed on the back of the optoelectronic PCB, the light source in this embodiment is an LED lamp, the top surface of the upper bearing outer ring 11 is provided with a through hole 112, the light source of the optoelectronic PCB penetrates through the through hole 112 to irradiate the code disc 42, and the optoelectronic PCB is in threaded connection with the upper bearing outer ring 11. The induction component 43 comprises an induction PCB, an inductor and a PCB support column 431, a PCB mounting hole is formed in the bottom surface of the lower bearing outer ring 21, and the induction PCB is matched with the PCB mounting hole through the PCB support column 431. The upper bearing outer ring 11 and the lower bearing outer ring 21 form a wire outlet 5. The circuits are arranged in the bearing to play a role in protection and beauty.

In addition, for the sake of beauty and hidden angle, one side of the top surface of the upper bearing outer ring 11 can be provided with an installation notch, the photoelectric component 41 is arranged in the installation notch, and the photoelectric component is convenient to disassemble and assemble through a threaded connection mode.

With the encoder subassembly, install on bearing unit spare, utilize combination bearing's integration to realize the integration of encoder, the installation, dismantle, the maintenance, the replacement is simple and convenient, and the upper and lower bearing inner race is fine simultaneously combines the encoder subassembly in combination bearing's inside and outside, and simultaneously, relevant circuit all does not expose outside, only draws forth the circuit through wire hole 5 and carries out relevant circuit connection, and the arrangement is small and exquisite, neat, pleasing to the eye.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in the claims of the present invention should be included in the scope of the present invention.

Claims (12)

1. A combined bearing comprises an upper bearing (1) and a lower bearing (2), and is characterized in that,

the upper bearing (1) comprises an upper bearing outer ring (11) and an upper bearing inner ring (12), and the upper bearing outer ring (11) is matched with the upper bearing inner ring (12);

one end of the upper bearing inner ring (12) is provided with an inner ring piece (121), and the inner ring piece (121) is matched with the upper bearing outer ring (11);

the lower bearing (2) comprises a lower bearing outer ring (21) and a lower bearing inner ring (22), and the lower bearing outer ring (21) and the lower bearing inner ring (22) are arranged on the lower bearing inner ring;

the other end of the upper bearing inner ring (12) is provided with a shaft piece (122), the shaft piece (122) penetrates through the lower bearing inner ring (22) and is fixed by a locking sleeve (3), the locking sleeve (3) is locked in the lower bearing inner ring (22), so that the upper bearing inner ring (12) drives the shaft piece (122) to rotate, and the shaft piece (122) drives the lower bearing inner ring (22) to rotate;

the upper bearing outer ring (11) is tightly matched with the lower bearing outer ring (21).

2. The combination bearing of claim 1, wherein the locking sleeve (3) comprises a locking sleeve body and a frustum (31) arranged at one side of the locking sleeve body, a central cylindrical hole (32) is formed between the locking sleeve body and the frustum (31), a notch (33) is formed in the locking sleeve (3) in the circumferential direction, the notch (33) is communicated with the central cylindrical hole (32), the shaft member (122) penetrates through the central cylindrical hole (32) and is tightly held and fixed by the central cylindrical hole (32), and the periphery of the locking sleeve (3) is locked on the inner hole wall of the lower bearing inner ring (22).

3. The combination bearing of claim 2, wherein the inner hole wall of the lower bearing inner ring (22) is matched with the outer periphery of the locking sleeve (3) in shape, the radial contact surface of the lower bearing inner ring (22) and the outer periphery of the locking sleeve (3) is an end surface (222), and the locking sleeve (3) is locked on the end surface (222) of the lower bearing inner ring (22).

4. The combination bearing of claim 2, wherein the lock sleeve body is provided with a first lock mounting hole (34), the lower bearing inner ring (22) is provided with a corresponding second lock mounting hole (221), and the first lock mounting hole (34) and the second lock mounting hole (221) are connected through a nut to tighten the locking sleeve (3) and the shaft member (122).

5. The combination bearing of claim 4, wherein the side edge of the upper bearing outer ring is provided with a first concave-convex step (111), the side edge of the lower bearing outer ring is provided with a second concave-convex step (211), and the upper bearing outer ring (11) and the lower bearing outer ring (21) are tightly matched with the second concave-convex step (211) through the first concave-convex step (111).

6. The combination bearing of claim 5, wherein a rubber gasket (10) is provided between the first concave-convex step (111) of the upper bearing outer race and the second concave-convex step (211) of the lower bearing outer race.

7. A combined bearing according to claim 1, characterised in that the inner race element (121) is provided with a channel for receiving the first steel balls (15).

8. Combination bearing with encoder, characterized in that it comprises an encoder assembly and a combination bearing according to any of claims 1-7, the encoder assembly comprises a code wheel (42), a photoelectric assembly (41) and a sensing assembly (43), the code wheel (42) is mounted on the upper bearing inner ring (12), the sensing assembly (43) is mounted on the inner bottom surface of the lower bearing outer ring (21), the photoelectric assembly comprises a light source, the light source illuminates the code wheel (42), and the photoelectric assembly (41) is electrically connected with the sensing assembly.

9. The combination bearing with encoder as claimed in claim 8, wherein the outer periphery of the upper bearing inner race (12) is provided with a circumferential boss (123), and the code wheel (42) is bonded under the circumferential boss (123).

10. The combination bearing with encoder as claimed in claim 8, wherein the optoelectronic module (41) further comprises an optoelectronic PCB, the light source is disposed on the back of the optoelectronic PCB, the top surface of the upper bearing outer ring (11) is provided with a through hole (112), the light source of the optoelectronic PCB irradiates the code wheel (42) through the through hole (112), and the optoelectronic PCB is in threaded connection with the upper bearing outer ring (11).

11. The combination bearing with encoder as claimed in claim 8, wherein the sensing assembly (43) comprises a sensing PCB and PCB support posts (431), and the inner bottom surface of the lower bearing outer ring (21) is provided with PCB mounting holes, and the sensing PCB is matched with the PCB mounting holes through the PCB support posts (431).

12. The combination bearing with encoder according to claim 8, characterized in that the upper bearing outer ring (11) and the lower bearing outer ring (21) form an outlet hole (5).

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