CN211501248U - Improve transmission assembly and self-service financial equipment of axial float - Google Patents
Improve transmission assembly and self-service financial equipment of axial float Download PDFInfo
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- CN211501248U CN211501248U CN201922360283.1U CN201922360283U CN211501248U CN 211501248 U CN211501248 U CN 211501248U CN 201922360283 U CN201922360283 U CN 201922360283U CN 211501248 U CN211501248 U CN 211501248U
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Abstract
The utility model discloses an improve transmission assembly of axial float, including driving medium, two bearings, axle sleeve and axial fixity subassembly, the outer lane of two said bearings sets up respectively in the axial both ends of driving medium, the driving medium includes the shaft hole that runs through its center pin, the axle sleeve with the shaft hole is located radially at an interval in the shaft hole, and the both ends of axle sleeve butt respectively two the inner terminal surfaces of the inner circle of bearing; the axial fixing component is simultaneously abutted against the outer end faces of the inner rings of the two bearings to axially limit the inner rings of the two bearings. The utility model discloses a driving medium is through between the interior terminal surface with the axle sleeve butt of the inner circle of two bearings to utilize the axial fixity subassembly to press from both sides the inner circle of two bearings from the outer end tightly, make the inner circle of bearing and the bearing ball jamming that the axial force that receives of outer lane leads to bad, axial float when having avoided high-speed transmission, thereby reduced the transmission noise and improved the life of product.
Description
Technical Field
The utility model relates to a transmission technical field especially relates to a improve drive assembly and self-service financial equipment of axial float.
Background
In order to prevent the problem of perpendicularity of a rotating shaft caused by transmission stress of thick transmission parts such as a transmission gear or a belt wheel and the like when equipment rotates at a high speed, two bearings are generally assembled at two ends of the gear/belt wheel during the design of an assembly structure of the transmission parts, as shown in figure 1, steps are arranged at two axial ends of the gear/belt wheel, the two bearings 1 and 2 are correspondingly embedded into the steps at the two ends of the gear/belt wheel, radial and axial limiting is carried out by means of the two bearings 1 and 2, and the two bearings 1 and 2 are axially limited by means of the thread matching of the steps of a riveting column 3 and a combination screw 4. Therefore, the perpendicularity of the rotating shaft when the gear/belt wheel rotates can be well ensured by the two bearings 1 and 2.
However, in this structure, because the two bearings 1 and 2 are assembled, the outer rings of the bearings 1 and 2 are limited by the steps of the gear/pulley, and the inner rings of the bearings are limited by the steps of the rivet column 3 and the combination screw 4, in practical application, in order to prevent poor bearing ball clamping caused by the axial force of the inner and outer rings of the two bearings 1 and 2 after assembly, a gap can only be reserved between the combination screw 4 and the end surface of the inner ring of each bearing during design, however, the design mode causes the gear/pulley to have larger axial play, and tooth surface abrasion and noise are easy to generate.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies in the prior art, the utility model provides an improve transmission assembly and self-service financial equipment of axial float can avoid the axial float that the assembly structure of driving medium such as gear wheel when high-speed transmission originally leads to effectively to reduce transmission noise and improve product life.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a transmission assembly for improving axial movement comprises a transmission part, two bearings, a shaft sleeve and an axial fixing assembly, wherein outer rings of the two bearings are respectively arranged at two axial ends of the transmission part, the transmission part comprises a shaft hole penetrating through a central shaft of the transmission part, the shaft sleeve and the shaft hole are radially arranged in the shaft hole at intervals, and two ends of the shaft sleeve are respectively abutted against inner end faces of inner rings of the two bearings; the axial fixing component is simultaneously abutted against the outer end faces of the inner rings of the two bearings to axially limit the inner rings of the two bearings.
As one of the embodiments, the axial fixing component comprises a connecting shaft and a locking piece, a flange is arranged at the first end of the connecting shaft, a threaded hole is formed in the end of the second end, the connecting shaft penetrates through the shaft hole, and the locking piece is in threaded connection with the connecting shaft through the threaded hole, so that the flange and the locking piece are respectively abutted to the outer end faces of the inner rings of the bearings.
In one embodiment, the distance from the end surface of the second end of the connecting shaft to the flange is less than the sum of the axial length of the two bearings and the length of the shaft sleeve.
As one embodiment, the locking member includes a screw and a locking piece, the screw passes through the locking piece and is inserted into the threaded hole, the locking piece is clamped on the outer end face of the inner ring of one bearing, and the locking piece and the end face of the second end of the connecting shaft are arranged at intervals.
As one embodiment, the interval between the locking piece and the end face of the second end of the connecting shaft is 0.3-0.5 mm.
In one embodiment, the locking member further comprises an elastic washer which is sleeved on the screw and compressed between the screw and the locking piece.
In one embodiment, the axial length of the shaft sleeve is greater than the distance between the two bearing installation grooves.
As one of the implementation modes, bearing mounting grooves are formed in two axial end faces of the transmission member, two bearings are respectively embedded in each bearing mounting groove, only one outer ring of each bearing is in interference fit with each bearing mounting groove, and the other outer ring of the other bearing is in clearance fit with the bearing mounting grooves.
In one embodiment, the axial length of the shaft sleeve is 0.1-0.2 mm greater than the distance between the two bearing installation grooves.
Another object of the present invention is to provide a financial self-service device, which includes a driving assembly for improving axial movement.
The utility model discloses a driving medium is through between the interior terminal surface with the axle sleeve butt of the inner circle of two bearings to utilize the axial fixity subassembly to press from both sides the inner circle of two bearings from the outer end tightly, make the inner circle of bearing and the bearing ball jamming that the axial force that receives of outer lane leads to bad, axial float when having avoided high-speed transmission, thereby reduced the transmission noise and improved the life of product. Meanwhile, the length of the shaft sleeve is larger than the distance between the two bearings, so that the phenomenon that the stress of the inner ring and the outer ring of the bearings is inconsistent is further avoided.
Drawings
FIG. 1 is a schematic view of an assembly structure of a transmission member of the prior art;
fig. 2 is a schematic structural diagram of a transmission assembly according to an embodiment of the present invention;
fig. 3 is a schematic sectional view along the direction a-a in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 2 and 3, the utility model discloses drive assembly mainly includes driving medium 10, two bearings 20, axle sleeve 30 and axial fixity subassembly 40, the outer lane of two bearings 20 sets up the axial both ends at driving medium 10 respectively, driving medium 10 is including the shaft hole 100 that runs through its center pin, axle sleeve 30 locates in the shaft hole with the radial interval in shaft hole for the circumferential motion of axle sleeve 30 does not influence the outer lane of bearing 20, and the inner terminal surface of the inner circle of two bearings 20 of both ends difference butt of axle sleeve 30. The transmission 10 may be any of a variety of rotating members for transmitting torque, such as gears, pulleys, and the like. The axial fixing component 40 simultaneously abuts against the outer end faces of the inner rings of the two bearings 20 to axially limit the inner rings of the two bearings 20.
With this arrangement, under the clamping action of the axial fixing assembly 40 toward the axial inner side, the shaft sleeve 30 is clamped by the inner rings of the bearings 20 at both ends, the shaft sleeve 30 and the inner rings of the bearings 20 can keep synchronous movement, and when the inner rings of the bearings 20 rotate, the shaft sleeve 30 can freely follow the rotation without interfering with the wall of the shaft hole 100. The outer ring of the bearing 20 is fixed relative to the transmission part 10, the inner ring of the bearing 20 is not blocked by the bearing balls due to axial stress, and the transmission part 10 can not move axially even in high-speed transmission. Preferably, the outer diameter of the shaft sleeve 30 cannot be too small, and is equivalent to the outer diameter of the inner ring of the bearing 20, so that a sufficient limiting area can be provided for the bearing, and the stability of the inner ring of the bearing is ensured.
As a more specific embodiment, the axial fixing assembly 40 of the present embodiment includes a connecting shaft 41 and a locking member 42, a flange 410 is disposed at a first end of the connecting shaft 41, a threaded hole (not shown) is disposed at an end of a second end, the connecting shaft 41 is inserted into the shaft hole 100, and the locking member 42 is in threaded connection with the connecting shaft 41 through the threaded hole, so that the flange 410 and the locking member 42 respectively abut against outer end surfaces of inner rings of the bearings 20 at two ends, and the two bearings 20 abut against an end surface of the shaft sleeve 30, thereby ensuring stress stability of the inner rings of the bearings 20, and preventing the bearings 20 from moving axially.
In addition, the distance from the end surface of the second end of the connecting shaft 41 to the flange 410 is smaller than the sum of the axial length of the two bearings 20 and the length of the shaft sleeve 30. So that the end surface of the second end of the connecting shaft 41 is spaced from the outer end surface of the bearing 20 adjacent to the second end, and the clamping degree of the flange 410 of the connecting shaft 41 to the bearing can be adjusted, thereby realizing more reliable clamping and locking. Specifically, the locking member 42 includes a screw 421 and a locking piece 422, the screw 421 passes through the locking piece 422 and is inserted into the threaded hole, the locking piece 422 is clamped on the outer end surface of the inner ring of one of the bearings 20, and the locking piece 422 and the end surface of the second end of the connecting shaft 41 are arranged at an interval. The interval between the locking piece 422 and the end face of the second end of the connecting shaft 41 is preferably 0.3 to 0.5 mm. As shown in fig. 3, due to the space, there is an adjustment distance between the locking piece 422 and the connecting shaft 41, and by reducing the distance, the inner ring of the bearing 20 can be more tightly clamped on the sleeve 30 to match the axial position of the outer ring of the bearing 20.
In order to enhance the clamping effect and the adjustment convenience, the locking member 42 further comprises an elastic washer 423, the elastic washer 423 is sleeved on the screw 421 and compressed between the screw 421 and the locking plate 422, the screw 421 can be prevented from loosening in the reuse process, the fastening effect is improved, and slipping is avoided.
When the installation of realizing the bearing, can also further optimize the cooperation parameter of axle sleeve 30, set up the axial length of axle sleeve 30 to be greater than the distance between two bearing mounting grooves for bearing 20 packs into the back, two bearing 20's inner circle must the butt in the tip of axle sleeve 30, and the axial length of preferred axle sleeve 30 is greater than the distance between two bearing mounting grooves 0.1 ~ 0.2 mm.
One of the bearings 20 is installed in the transmission member 10 in an interference fit manner, and the other bearing 20 is installed in the transmission member 10 in a clearance fit manner. As shown in fig. 3, specifically, bearing mounting grooves may be formed on two axial end surfaces of the transmission member 10, two bearings 20 are respectively embedded in each bearing mounting groove, and an outer ring of one bearing 20 (a bearing located above and close to the locking piece 422 in fig. 3) is in interference fit with the corresponding bearing mounting groove, and an outer ring of the other bearing 20 (a bearing located below and close to the flange 410 in fig. 3) is in clearance fit with the bearing mounting groove (the clearance is very small, generally 0.02mm to 0.05mm), so that the bearing 20 is installed in the transmission member 10, the synchronization between the outer ring of the bearing and the transmission member 10 is realized, and the perpendicularity of the rotating shaft when the gear/pulley rotates can be ensured.
The utility model also provides a self-service financial equipment can improve and avoid the axial float among the transmission process through adopting this kind of drive assembly, and various needs that this drive assembly can use in the product carry out driven position, especially require higher position to axial precision.
The utility model discloses a driving medium is through between the interior terminal surface with the axle sleeve butt of the inner circle of two bearings to utilize the axial fixity subassembly to press from both sides the inner circle of two bearings from the outer end tightly, make the inner circle of bearing and the bearing ball jamming that the axial force that receives of outer lane leads to bad, axial float when having avoided high-speed transmission, thereby reduced the transmission noise and improved the life of product. Meanwhile, the length of the shaft sleeve is larger than the distance between the two bearings, so that the phenomenon that the stress of the inner ring and the outer ring of the bearings is inconsistent is further avoided.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (10)
1. The transmission assembly for improving the axial movement is characterized by comprising a transmission piece (10), two bearings (20), a shaft sleeve (30) and an axial fixing assembly (40), wherein outer rings of the two bearings (20) are respectively arranged at two axial ends of the transmission piece (10), the transmission piece (10) comprises a shaft hole (100) penetrating through a central shaft of the transmission piece, the shaft sleeve (30) and the shaft hole are radially arranged in the shaft hole at intervals, and two ends of the shaft sleeve (30) are respectively abutted against inner end faces of inner rings of the two bearings (20); the axial fixing component (40) is simultaneously abutted against the outer end faces of the inner rings of the two bearings (20) to axially limit the inner rings of the two bearings (20).
2. The transmission assembly for improving the axial play as claimed in claim 1, wherein the axial fixing assembly (40) comprises a connecting shaft (41) and a locking member (42), a flange (410) is arranged at a first end of the connecting shaft (41), a threaded hole is arranged at an end of a second end of the connecting shaft, the connecting shaft (41) is arranged in the shaft hole (100) in a penetrating manner, and the locking member (42) is in threaded connection with the connecting shaft (41) through the threaded hole, so that the flange (410) and the locking member (42) are respectively abutted against the outer end faces of the inner rings of the two bearings (20).
3. Transmission assembly improving axial play according to claim 2, characterized in that the distance of the end face of the second end of the connection shaft (41) to the flange (410) is less than the sum of the axial length of the two bearings (20) and the length of the bushing (30).
4. The transmission assembly for improving axial movement according to claim 3, wherein the locking member (42) comprises a screw (421) and a locking plate (422), the screw (421) passes through the locking plate (422) and is arranged in the threaded hole, the locking plate (422) is clamped on the outer end face of the inner ring of one bearing (20), and the locking plate (422) is arranged at a distance from the end face of the second end of the connecting shaft (41).
5. The transmission assembly for improving axial play of claim 4, wherein the interval between the locking piece (422) and the end face of the second end of the connecting shaft (41) is 0.3-0.5 mm.
6. The transmission assembly for improving axial play according to claim 4, wherein the locking member (42) further comprises an elastic washer (423), the elastic washer (423) is sleeved on the screw (421) and compressed between the screw (421) and the locking plate (422).
7. A drive assembly to improve axial play according to any of claims 1 to 6, wherein the axial length of the sleeve (30) is greater than the distance between two of the bearing mounting slots.
8. The transmission assembly for improving the axial play as claimed in claim 7, wherein two axial end faces of the transmission member (10) are provided with bearing installation grooves, two bearings (20) are respectively embedded in each bearing installation groove, the outer ring of only one bearing (20) is in interference fit with the bearing installation groove, and the outer ring of the other bearing (20) is in clearance fit with the bearing installation groove.
9. The transmission assembly for improving axial play as claimed in claim 8, wherein the axial length of the shaft sleeve (30) is 0.1-0.2 mm greater than the distance between the two bearing mounting grooves.
10. Financial self-service equipment, characterized by comprising a transmission assembly for improving axial play according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360283.1U CN211501248U (en) | 2019-12-24 | 2019-12-24 | Improve transmission assembly and self-service financial equipment of axial float |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360283.1U CN211501248U (en) | 2019-12-24 | 2019-12-24 | Improve transmission assembly and self-service financial equipment of axial float |
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| Publication Number | Publication Date |
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| CN211501248U true CN211501248U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922360283.1U Active CN211501248U (en) | 2019-12-24 | 2019-12-24 | Improve transmission assembly and self-service financial equipment of axial float |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664545A (en) * | 2020-12-07 | 2021-04-16 | 河北汉光重工有限责任公司 | High-precision rotating shaft structure |
-
2019
- 2019-12-24 CN CN201922360283.1U patent/CN211501248U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664545A (en) * | 2020-12-07 | 2021-04-16 | 河北汉光重工有限责任公司 | High-precision rotating shaft structure |
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