CN218494051U

CN218494051U - Encoder bearing

Info

Publication number: CN218494051U
Application number: CN202222617605.8U
Authority: CN
Inventors: 王训武; 毛子铃
Original assignee: Zhejiang Bom Precision Bearing Co ltd
Current assignee: Zhejiang Bom Precision Bearing Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-17
Anticipated expiration: 2032-09-30

Abstract

The utility model provides an encoder bearing, it includes bearing one and bearing two, bearing one and bearing two are connected through the connecting axle, bearing one and bearing two outer lane part mutually support or mutually support and form a whole, the connecting axle includes shaft section one and shaft section two, shaft section one cooperates with bearing one inner circle or replaces bearing one inner circle oneself as bearing one inner circle; the second shaft section is in clearance fit with the inner ring of the second bearing, the end part of the second shaft section extends out of the inner ring of the second bearing, and the extending part is a locking section; the locking block is sleeved on the locking section and can slide along the locking section, the locking block comprises a locking surface, the locking surface is firmly abutted to the inner ring of the bearing II so as to eliminate the axial clearance of the bearing I and the bearing II, and the locking block is fixedly connected with the shaft section II after the clearance is eliminated to meet the specified requirement. The encoder bearing has the advantages of being simple in assembly, convenient for eliminating play and the like.

Description

Encoder bearing

Technical Field

The utility model relates to an encoder field especially relates to encoder bearing.

Background

Chinese patent application CN202111524410.2 provides an encoder bearing and an encoder bearing with an encoder, which reduces the installation steps by integrating the encoder bearing, ensures the inherent accuracy of the bearing, improves the combination accuracy, and effectively improves the rotation stability. 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. However, the encoder bearing of the scheme adopts an embedded locking structure, so that the diameter of the inner shaft is small, a large hole cannot be formed in the middle of the inner shaft, and the requirements of forming a large rotating shaft hole and a large tapered hole cannot be met. And the assembly is comparatively complicated, spare part is more.

The applicant subsequently applies Chinese patent application 2022109938233-an encoder bearing and an encoder bearing with an encoder, the structure for eliminating the gap has the defects of complex process, high manufacturing cost, high difficulty in processing parts, damage to the bearing caused by unbalanced force applied to an inner ring in the process of eliminating the gap and the like, and the face-to-face installation is required to be recognized and is not beneficial to automatic production.

SUMMERY OF THE UTILITY MODEL

This use is novel provides a novel encoder bearing according to prior art problem.

In order to realize the purpose, the utility model adopts the following technical scheme:

the encoder bearing comprises a first bearing and a second bearing, wherein the first bearing is connected with the second bearing through a connecting shaft, outer ring parts of the first bearing and the second bearing are mutually abutted or mutually matched to form a whole, the connecting shaft comprises a first shaft section and a second shaft section, and the first shaft section is matched with an inner ring of the first bearing or replaces the first inner ring of the first bearing to be used as the first inner ring of the first bearing; the second shaft section is in clearance fit with the inner ring of the second bearing, the end part of the second shaft section extends out of the inner ring of the second bearing, and the extending part is a locking section; the locking block is sleeved on the locking section and can slide along the locking section, the locking block comprises a locking surface, the locking surface abuts against the inner ring of the bearing II so as to eliminate axial play of the bearing I and the bearing II, and the locking block is fixedly connected with the shaft section II after the play is eliminated to meet the specified requirements. The encoder bearing can reliably eliminate axial clearance, is low in part cost, and controllable in clearance elimination process, and does not influence the rotation of the encoder bearing.

Preferably, the locking surface is positioned on the inner side of the inner side surface of the locking block, and the locking surface is not contacted with the sealing ring and the outer ring of the bearing II in a fixed state of the locking block. The phenomenon that the bearing cannot rotate due to the fact that the locking surface is attached to parts except the inner ring is avoided.

Preferably, the inner side surface of the locking block is provided with a contact ring, and the locking surface is the end surface of the contact ring.

Preferably, the outer edge of the locking surface is positioned on the inner side of the outer edge of the end surface of the inner ring of the bearing II or is aligned with the outer edge of the end surface of the inner ring.

Preferably, the locking block and the locking section are fixedly connected by welding or by fixing glue or by a snap spring.

Preferably, the second shaft section and the inner ring of the second bearing are in clearance fit, the first shaft section is used as the inner ring of the first bearing, and the outer circumferential side surface of the first shaft section is provided with a raceway for being matched with the rolling body of the first bearing.

Preferably, the locking surface is planar.

Preferably, the end face of the lower end of the second shaft section is provided with a mounting hole, and the shape of the mounting hole is matched with that of the motor rotating shaft needing to be matched.

The bearing body is the encoder bearing.

This scheme has following beneficial effect:

the encoder bearing locking structure has the advantages of low production cost and low installation cost, the locking process is stable and reliable, the phenomenon of uneven stress on the bearing inner ring can not be caused, and the axial stress balance of the bearing inner ring in the process of locking and eliminating the gap is guaranteed.

Drawings

Fig. 1 is a schematic view of the entire structure of an encoder bearing.

Fig. 2 is a cross-sectional view of the left side view of fig. 1.

Fig. 3 is a schematic structural view of fig. 1 with the locking block removed.

Fig. 4 is a schematic structural view of the locking block.

Fig. 5 is a schematic structural view of the connecting shaft.

The bearing comprises a first bearing 1, a second bearing 2, a connecting shaft 3, a first shaft section 4, a second shaft section 5, a locking section 6, a locking block 7, a locking surface 8, a contact ring 9, a roller path 10, a rolling body 11, a mounting hole 12, a central hole 13, a retaining rubber groove 61 and an inner ring end face of the second bearing 21.

Detailed Description

Example 1

The encoder bearing comprises a first bearing 1 and a second bearing 2, wherein the first bearing 1 and the second bearing 2 are connected through a connecting shaft 3, and the outer ring parts of the first bearing 1 and the second bearing 2 are mutually abutted or mutually matched to form a whole, so that the outer ring of the first bearing 1 and the outer ring of the second bearing 2 are relatively fixed.

Connecting axle 3 in this scheme includes shaft section one 4 and shaft section two 5, and connecting axle 3 specifically is the ladder axle construction in this scheme, and the shaft diameter of shaft section two 5 is greater than the shaft diameter of shaft section one 4, and the terminal surface of shaft section one 4 is seted up centre bore 13 and is used for fixed with the motor shaft of installation in shaft section two 5. The first shaft section 4 is matched with the inner ring of the first bearing 1 or replaces the inner ring of the first bearing 1 to be used as the inner ring of the first bearing 1; in the present embodiment, the first bearing 1 does not have a separate inner ring structure, and the first shaft section 4 is used as the inner ring of the first bearing 1. And a raceway 10 for the rolling body 11 of the bearing I1 to rotate is formed on the circumferential side surface of the outer side of the shaft section I4.

Because the axial movement clearance of the rolling element 11 needs to be adjusted and eliminated after assembly, in this embodiment, the second shaft section 5 and the inner ring of the second bearing 2 are in clearance fit, so that the fixed phases on the inner ring and the inner ring move axially relative to the rolling element 11, thereby reducing the clearance in which the rolling element 11 can move axially, and meanwhile, the clearance fit of the inner ring and the second shaft section 5 can also realize the sliding of the inner ring relative to the second shaft section 5.

The second shaft section 5 is in clearance fit with the inner ring of the second bearing 2, the end part of the second shaft section 5 extends out of the inner ring of the second bearing 2, the extending part is a locking section 6, and the locking section 6 is used for being assembled with a locking block 7. The locking device further comprises a locking block 7, the locking block 7 is sleeved on the locking section 6 and can slide along the locking section 6, the locking block 7 comprises a locking surface 8, the locking surface 8 is firmly abutted to the inner ring of the bearing II 2 so as to eliminate the axial clearance between the bearing I1 and the bearing II 2, and the locking block 7 is fixedly connected with the shaft section II 5 after the clearance is eliminated to meet the specified requirement. In order to keep that the inner ring of the bearing II 2 can axially and horizontally move in the process of eliminating the gap, the locking surface 8 is a plane, the locking surface 8 is attached to the end face of the inner ring, and all parts of the inner ring are stressed in a balanced manner due to the collision of the locking blocks 7. The encoder bearing can reliably eliminate axial clearance, is low in part cost, controllable in clearance elimination process, and does not influence rotation of the encoder bearing.

In this embodiment, the locking surface 8 is located on the inner side of the inner side surface of the locking block 7, and the locking surface 8 is not in contact with the sealing ring and the outer ring of the second bearing 2 in the fixed state of the locking block 7. The structural design can not cause the phenomenon that the bearing cannot rotate due to the fact that the locking surface 8 is attached to parts except the inner ring.

In this embodiment, the inner side surface of the locking block 7 is provided with a contact ring 9, and the locking surface 8 is an end surface of the contact ring 9. Therefore, the circumferential locking surface 8 can be firmly abutted with the annular end surface of the circumferential bearing II 2, and the stress of each part of the end surface is ensured to be stable.

In this embodiment, in order to avoid the situation that the end face of the locking block 7 collides with a portion other than the end face 21 of the inner ring of the second bearing, which causes the bearing to be incapable of rotating, the outer edge of the locking face 8 is located inside the outer edge of the end face of the inner ring of the second bearing 2 or aligned with the outer edge of the end face of the inner ring.

In this embodiment, a fixing glue groove 61 for placing fixing glue is formed in a side surface of the locking section 6, and the locking block 7 is fixed to the locking section 6 through the fixing glue.

From the above, in the present embodiment, the second shaft section 5 and the inner ring of the second bearing 2 are in clearance fit, the first shaft section 4 is used as the inner ring of the first bearing 1, and the outer circumferential side surface of the first shaft section 4 is provided with the raceway 10 for cooperating with the rolling elements 11 of the first bearing 1.

In the scheme, the end face of the lower end of the second shaft section 5 is provided with a mounting hole 12, and the shape of the mounting hole 12 is matched with the shape of the motor rotating shaft needing to be matched.

The specific installation process of the scheme is as follows:

firstly, assembling a connecting shaft 3 with a first bearing 1 and a second bearing 2, mutually matching outer ring parts of the first bearing 1 and the second bearing 2 which are preliminarily assembled, extending a locking section 6 out of an inner ring of the second bearing 2, then sleeving a locking block 7 on the locking section 6 to enable the locking block 7 to abut against an end face 21 of the inner ring of the second bearing and simultaneously apply a force, and simultaneously applying a relative force to the other end of a first shaft section 4, so that axial clearances of the first bearing 1 and the second bearing are simultaneously eliminated; when the clearance is eliminated and the target is reached, the locking block 7 and the locking section 6 are fixedly connected by the holding glue in the holding glue groove 61.

Example 2

The difference from the embodiment 1 is that: the locking block 7 and the locking section 6 are fixedly connected by welding.

Example 3

The difference from the embodiment 1 is that: this scheme latch segment 7 passes through jump ring fixed connection with locking section 6

Example 4

The present embodiment is different from embodiment 1 in that: the bearing I1 is provided with an independent inner ring structure, and the shaft section I4 is in interference fit with the inner ring of the bearing I1.

Example 5

The bearing body is the encoder bearing.

Claims

1. Encoder bearing, including bearing (1) and bearing two (2), bearing (1) and bearing two (2) are connected through connecting axle (3), and the outer lane part of bearing (1) and bearing two (2) supports each other to lean on or mutually support and forms a whole, its characterized in that: the connecting shaft (3) comprises a first shaft section (4) and a second shaft section (5), wherein the first shaft section (4) is matched with the inner ring of the first bearing (1) or replaces the inner ring of the first bearing (1) to be used as the inner ring of the first bearing (1); the second shaft section (5) is in clearance fit with the inner ring of the second bearing (2), the end part of the second shaft section (5) extends out of the inner ring of the second bearing (2), and the extending part is a locking section (6); still include latch segment (7), latch segment (7) cover is established on locking section (6) and can be followed locking section (6) and slide, and latch segment (7) include locking surface (8), and locking surface (8) are supported the jail and are gone up in order to eliminate the axial internal clearance of bearing one (1) and bearing two (2) in bearing two (2), and the internal clearance is eliminated and is had latch segment (7) and shaft section two (5) fixed connection after the regulation requirement.

2. The encoder bearing of claim 1, wherein: the locking surface (8) is positioned on the inner side of the inner side surface of the locking block (7), and the locking surface (8) is not contacted with the sealing ring and the outer ring of the bearing II (2) under the fixed state of the locking block (7).

3. The encoder bearing of claim 1, wherein: the inner side surface of the locking block (7) is provided with a contact ring (9), and the locking surface (8) is the end surface of the contact ring (9).

4. The encoder bearing of claim 3, wherein: the outer edge of the locking surface (8) is positioned on the inner side of the outer edge of the end surface of the inner ring of the bearing II (2) or is aligned with the outer edge of the end surface of the inner ring.

5. The encoder bearing of claim 1, wherein: the locking block (7) and the locking section (6) are fixedly connected in a welding mode, or fixedly connected through fixing glue or fixedly connected through a clamp spring.

6. The encoder bearing of claim 1, wherein: the second shaft section (5) is in clearance fit with the inner ring of the second bearing (2), the first shaft section (4) is used as the inner ring of the first bearing (1), and the outer circumferential side surface of the first shaft section (4) is provided with a roller path (10) matched with a rolling body (11) of the first bearing (1).

7. The encoder bearing of claim 1, wherein: the locking surface (8) is a plane.

8. The encoder bearing of claim 1, wherein: the end face of the lower end of the second shaft section (5) is provided with a mounting hole (12), and the shape of the mounting hole (12) is matched with the shape of a motor rotating shaft needing to be matched.

9. The encoder bearing of claim 1, wherein: the side surface of the locking section (6) is provided with a fixing glue groove (61) for placing fixing glue, and the locking block (7) is fixed with the locking section (6) through the fixing glue.