CN218207499U - Rolling bearing and roller skate - Google Patents
Rolling bearing and roller skate Download PDFInfo
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- CN218207499U CN218207499U CN202222570854.6U CN202222570854U CN218207499U CN 218207499 U CN218207499 U CN 218207499U CN 202222570854 U CN202222570854 U CN 202222570854U CN 218207499 U CN218207499 U CN 218207499U
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Abstract
The utility model discloses a antifriction bearing and roller skate belongs to the sports goods field, and the defect that can not fasten when the problem pulley assembly to, adopt technical scheme as follows: with this antifriction bearing inner circle unilateral outwards extend the bulge loop, the length of bulge loop equals 1/2 pulley mounting hole and is used for the outer lane fixed spacing between the outer lane fixed slot of fixed antifriction bearing, make a pair of bearing bulge loop inwards and support each other and lean on, install in the wheel core pilot hole, leave out traditional activity interval cover, the relative tolerance of the outer lane fixed spacing that will be difficult to control and the inner circle interval between a pair of bearing inner circles after the installation, become the tolerance of the outer lane fixed spacing and a pair of bulge loop length sum of easier control, the pulley just can be in fastening state when the installation, and the bearing also works in self work precision requires the within range, the pulley rotates just so in a flexible way, safety has also ensured.
Description
Technical Field
The utility model relates to a sports goods technical field specifically is a antifriction bearing and roller skate.
Background
The existing pulley installation of roller skates has the defect that a pulley cannot be fastened because the pulley installation hole is used for fixing the outer ring fixed distance between the outer ring fixed grooves of the bearing and the relative tolerance of the inner ring distance between a pair of bearing inner rings after installation and the self processing tolerance are difficult to control, in particular to say that the pulleys of the same model have a set distance, the set distance enables the bearing outer rings installed in pairs at the central hole of the pulley to keep separate, the set distance can also be called as the outer ring fixed distance, generally, almost all the bearings are designed to be equal in height, namely, the two sides of the inner ring and the outer ring of the bearing are almost flush, when the bearings are installed in pairs at the central hole of the pulley, a distance sleeve is required to be additionally installed between the two bearing inner rings, so that when a through nail is screwed tightly after penetrating, the two sides of the inner rings are provided with supporting points, and the two sides of the inner rings can keep relatively fixed positions with the outer rings in the axial direction; however, the number and the number of the parts are increased, for example, the distance sleeve has a machining tolerance, the bearing has a machining tolerance, and the like, and it is easy to understand that the accumulated tolerance is increased, so that the wheel cannot rotate smoothly.
The user must therefore take the action of loosening the pulley tightening, leaving clearance to ensure the unloaded flexibility of the pulley wheel, with the consequent consequences: after the force is squatted in load and motion on the foot of roller skate, the clearance of leaving can make the pulley produce certain yaw, and the steel ball of bearing can grind wide with its complex slot play, and along with the time growth, the play is vicious expansion gradually, makes the bearing at the during operation impaired with higher speed, and the grease runs off because of overheated, and the noise increases, and the yaw aggravation is rubbed and is bumped the knife rest until the pulley limit, or the incident that the wheel dropped takes place.
Disclosure of Invention
To prior art's problem, the utility model provides an at first, change into the same design of prior art antifriction bearing inner and outer lane length and extend abrupt ring in inner circle one side, the purpose of this abrupt ring design is in order to play the effect of butt, because the bearing is from taking the attribute that machining precision is high, so the design of abrupt ring is processed together when antifriction bearing adds man-hour, consequently for ordinary spare parts such as interval cover, tolerance probability can reduce greatly.
Still further, the utility model provides a roller skate again uses above-mentioned antifriction bearing, also makes a pair of antifriction bearing abrupt ring inwards just to support each other exactly, installs in the wheel core, omits traditional interval cover, only needs control antifriction bearing's tolerance, and the pulley just can be in the fastening state when the installation, and antifriction bearing also works in self work accuracy requires the within range moreover, and the pulley rotation is just also nimble, and safety has also ensured.
The utility model adopts the technical scheme as follows:
a rolling bearing comprising: the rolling bearing comprises an inner ring, an outer ring and balls distributed between the inner ring and the outer ring, wherein the rolling bearing only extends out of a convex ring from the inner ring on one side, the convex ring and the inner ring are integrally formed, and the end part of the convex ring forms a butt joint end with a butt joint effect.
A roller skate, including foretell antifriction bearing and:
the tool rest is configured to be supported by a main body of the roller skate, the tool rest comprises a supporting part used for connecting the skate body and a vertical plate extending downwards from two ends of the supporting part, a space for accommodating the pulley is enclosed between the two vertical plates and the supporting part, and the vertical plate is provided with a through hole for the through of a through nail;
the pulley comprises a pulley core, wherein an assembling hole for installing a rolling bearing is formed in the center of the pulley core; the pulley is rotationally connected with the vertical plate through a through nail;
the middle of the assembly hole is provided with a stop ring protruding towards the circle center direction of the assembly hole, the rolling bearings are installed in the assembly hole in pairs, outer rings of the two rolling bearings are separated by the stop ring, protruding rings of the two rolling bearings in the assembly hole are inward, and abutting ends of the protruding rings are in contact with each other and abut against each other;
the vertical plate is provided with a convex abutting part which is used for abutting against the inner ring of the rolling bearing at the position of the via hole on the inner side surface, the convex abutting part protrudes out of the inner side surface of the vertical plate, and when the pulley is positioned between the two vertical plates, the convex abutting part and the inner ring of the rolling bearing abut against each other.
Further, the circumferential surface of the outer ring of the rolling bearing is in interference fit with the assembling holes. The purpose of the design is to keep the outer ring of the rolling bearing and the assembly hole relatively static through friction force, no relative sliding exists between the outer ring of the rolling bearing and the assembly hole, when the pulley is stressed to rotate, the kinetic energy loss obtained by the rolling bearing is smaller, and the rotating speed of the pulley can be higher.
The thickness of the stop ring forms the outer ring fixed interval, and the length of the single surface of the inner ring of the rolling bearing, namely the length of the convex ring, is 1/2 of the outer ring fixed interval. The arrangement can enable the protruding rings of the two rolling bearings to collide with each other in length, so that a movable distance sleeve in the middle of the wheel core assembly hole is replaced, and the other parts can be ignored as long as the size of the fixed distance of the outer ring is guaranteed to be certain to be less than the tolerance point of the sum of the lengthening values of the two colliding protruding rings.
In the two rolling bearings, the length of the outer ring protruding out of the orifice of the assembly hole is 0.5-1.2mm, and the length of the convex part protruding out of the inner side face of the vertical plate is 2.2-2.8mm. In this case, the outer ring has a part of protrusion outwards relative to the orifice of the assembly hole, but the length of the convex abutting part is longer than that of the protrusion and is at least 0.8mm longer, so that the outer ring can be ensured not to touch the inner side surface of the vertical plate, and a safe interval is ensured.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
1. as the convex rings extend outwards from one side of the inner ring of the rolling bearing, during assembly, the convex rings of the two rolling bearings in the assembly hole are inwards abutted against each other, the rolling bearing is assembled, the pair of rolling bearing convex rings replace a movable distance sleeve in the middle of the traditional wheel core assembly hole, the relative tolerance between the fixed distance of the outer ring in the pulley assembly hole which is not easy to control and the distance between the inner rings of the pair of rolling bearings after the assembly is finished is changed into the tolerance between the fixed distance of the outer ring which is easier to control and the sum of the lengths of the pair of convex rings, the more the pulley is screwed, the more the pair of rolling bearing inner rings can be kept on the same straight line, the rotation of the outer ring is not influenced, the rolling bearing can be kept in a normal position during working, the rolling balls can always keep a normal relative relationship with the groove, and the problem that the roller of the prior roller shoe is easy to rotate and is inflexible after being installed and fastened is solved.
2. In the two rolling bearings, the length of the outer ring protruding out of the orifice of the assembly hole is 0.5-1.2mm, and the length of the convex part protruding out of the inner side face of the vertical plate is 2.2-2.8mm. In this case, the outer ring has a part of protrusion outwards relative to the orifice of the assembly hole, but the length of the convex abutting part is longer than that of the protrusion and is at least 0.8mm longer, so that the outer ring can be ensured not to touch the inner side surface of the vertical plate, and a safe interval is ensured. The inner ring and the outer ring on the other side of the rolling bearing are flush, so that the outer side of the assembled rolling bearing is consistent with the outer side of the traditional rolling bearing, the assembled rolling bearing can be matched with a universal tool rest in the market, and the special tool rest does not need to be matched.
Drawings
Fig. 1 is a schematic perspective view of a pulley according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the assembly of the wheel core and the bearing according to the embodiment of the present invention;
FIG. 3 is a cross-sectional view of the embodiment of the present invention before the wheel core is assembled
FIG. 4 is a cross-sectional view of the wheel core and the bearing assembly of the embodiment of the present invention;
fig. 5 is a sectional view of the assembly of the wheel core rotation structure and the wheel frame in the embodiment of the present invention.
The figures are numbered: a pulley 1; a wheel core 2; a PU outer ring 3; a rolling bearing 4; an inner race 401; an outer ring 402; a protruding ring 403; a fitting hole 5; an outer ring fixing groove 501; a stop ring 502; a tool holder 6; a support portion 7; a vertical plate 8; a through nail 9; a protrusion portion 10; the outer ring is fixed at a distance L; the length of the protruding ring S.
Detailed Description
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
The utility model discloses a specific embodiment as follows:
as shown in fig. 1 to 5, the present invention firstly provides a rolling bearing 4, which comprises an inner ring 401, an outer ring 402 and balls distributed therebetween. The innovation points are that: the rolling bearing 4 has a protruding ring 403 extending outward from the single-sided inner ring 401, and the protruding ring 403 is integrally formed with the inner ring during the bearing processing. The design of the protruding ring 403 is to play a role of abutting, and because the bearing has the property of high processing precision, the design of the protruding ring is processed at the same time when the rolling bearing is processed, so that the tolerance probability is greatly reduced compared with common parts such as a spacing sleeve and the like; the rolling bearing 4 can be used for roller skates and other related fields; the rolling bearing 4 will be described below as an example of the use in a roller skate.
The roller shoe assembled by the rolling bearing 4 comprises a tool rest 6 and a pulley 1, wherein the tool rest 6 is used for supporting a roller shoe main body, the tool rest 6 is composed of a supporting part 7 connected with a shoe body and a vertical plate 8, two ends of the vertical plate 8 extend downwards, and a through hole matched with a through nail 9 is formed in the vertical plate 8.
The pulley 1 is arranged between the vertical plates 8 on the two sides and the supporting part 7, and the through nail 9 with internal threads passes through the centers of the vertical plates 8 and the pulley 1 and is matched and locked with a screw at the vertical plate 8 on the other side in a locking manner, which is a conventional method. As shown in fig. 2-4, the pulley 1 is composed of a pulley core 2 and a PU outer ring 3, a mounting hole 5 is formed in the middle of the pulley core 2, an inward convex stop ring 502 is formed in the middle of the mounting hole 5, a ring-shaped outer ring fixing groove 501 is formed between each of two sides of the stop ring 502 and an adjacent mounting hole, and the thickness of the stop ring 502 is the outer ring fixing distance L.
The utility model discloses a rolling bearing 4 outwards extends abrupt ring 403 at unilateral inner circle 401, adds the length S that will suddenly ring 403 to set for and equals 1/2 outer lane fixed spacing L man-hour, and both sides abrupt ring 403 is relative and support each other during the assembly and lean on, installs in pilot hole 5. The protruding rings 403 of such a pair of rolling bearings 4 replace the movable distance sleeve in the conventional assembly, so that the tolerance of the distance sleeve does not need to be considered in the assembly, and the rolling bearings 4 belong to precision parts with lower tolerance than the common fittings. The utility model discloses left out the interval cover, need not consider the tolerance of other accessories, directly turn into the system tolerance after assembling a pair of antifriction bearing 4's equipment tolerance, greatly reduced the system tolerance value, solved the problem that 1 installations of pulley shoes can not fasten at present.
As shown in fig. 5, when the through-nail 9 locks the pulley 1 and the vertical plate 8, the pair of inner rings 403 of the bearing abut against each other and are pressed, and the inner ring 401 of the bearing abuts against the protruding part 10 of the vertical plate 8. In practical operation, as long as the dimension of the outer ring fixed distance L is ensured to be certain to be less than the tolerance point of the sum of the lengthening values of the two convex rings 403, the other tolerance points can be ignored, and the tolerance control is well controlled for the precise machining of the rolling bearing 4; the sum 2S of the lengths of the two convex rings 403 is slightly larger than the fixed distance L of the outer ring, when the through nails 9 are screwed, the inner rings 401 and the convex rings 403 of the pair of rolling bearings 4 can be kept on the same straight line, the rolling bearings 4 can be kept at normal positions when working, the balls and the grooves always keep normal relative relation, the outer rings 402 of the rolling bearings 4 cannot be locked, the rotation of the outer rings 402 of the rolling bearings cannot be influenced, and therefore the flexibility of idle rotation of the pulley 1 wheel is guaranteed. For example, the length of the protruding ring 403 is 5.1mm, and the fixed outer ring spacing L is 10mm, so that the sum of the lengths of the two protruding rings 403 is 0.2mm greater than the fixed outer ring spacing L, and each bearing has a tolerance of only 0.1mm on average, and is almost imperceptible after the landing, and the adverse effect on the rotation of the pulley is almost negligible.
Further, the circumferential surface of the outer ring 402 of the rolling bearing is in interference fit with the fitting hole 5. The outer ring 402 of the rolling bearing and the assembly hole 5 are kept relatively static through friction force, no relative sliding exists between the outer ring and the assembly hole, when the pulley 1 is forced to rotate, the kinetic energy loss obtained by the rolling bearing 4 is smaller, and the rotating speed of the pulley 1 can be higher.
The inner ring 401 at the other side of the rolling bearing is kept as high as the outer ring 402, the outer side of the assembled bearing 4 is kept as the same as the outer side of the traditional bearing assembly, and the universal tool rest 6 can be matched with a universal tool rest 6 in the market without matching with a specific tool rest 6.
In a more preferable scheme, the length of the outer ring 402 protruding out of the orifice of the assembly hole 5 of the pair of rolling bearings 4 in the assembly hole 5 is 0.5-1.2mm, and the length of the convex part 10 protruding out of the inner side surface of the vertical plate 8 is 2.2-2.8mm. In this case, the outer ring 402 has a part of protrusion outward relative to the opening of the assembly hole 5, but since the length of the protruding portion 10 is longer than that of the protrusion, and is at least 0.8mm longer, it can be ensured that the outer ring 402 does not touch the inner side surface of the vertical plate 8, and a safe distance is ensured.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above detailed description. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (5)
1. A rolling bearing characterized by comprising: the rolling bearing comprises an inner ring, an outer ring and balls distributed between the inner ring and the outer ring, wherein the rolling bearing only extends out of a convex ring from the inner ring on one side, the convex ring and the inner ring are integrally formed, and the end part of the convex ring forms a butt joint end with a butt joint effect.
2. A roller skate characterized by comprising the rolling bearing of claim 1 and:
the tool rest is configured to be supported by a main body of the roller skate, the tool rest comprises a supporting part used for connecting the skate body and a vertical plate extending downwards from two ends of the supporting part, a space for accommodating the pulley is enclosed between the two vertical plates and the supporting part, and the vertical plate is provided with a through hole for the through of a through nail;
the pulley comprises a pulley core, wherein an assembling hole for installing a rolling bearing is formed in the center of the pulley core; the pulley is rotationally connected with the vertical plate through a through nail;
the middle of the assembly hole is provided with a stop ring protruding towards the circle center direction of the assembly hole, the rolling bearings are installed in the assembly hole in pairs, outer rings of the two rolling bearings are separated by the stop ring, protruding rings of the two rolling bearings in the assembly hole are inward, and abutting ends of the protruding rings are in contact with each other and abut against each other;
the vertical plate is provided with a convex abutting part which is used for abutting against the inner ring of the rolling bearing at the position of the via hole on the inner side surface, the convex abutting part protrudes out of the inner side surface of the vertical plate, and when the pulley is positioned between the two vertical plates, the convex abutting part and the inner ring of the rolling bearing abut against each other.
3. A roller skate as defined in claim 2 wherein: the circumferential surface of the outer ring of the rolling bearing is in interference fit with the assembly holes.
4. A roller skate as defined in claim 2 wherein: the thickness of the stop ring forms the outer ring fixed interval, and the length of the single surface of the inner ring of the rolling bearing, namely the length of the convex ring, is 1/2 of the outer ring fixed interval.
5. A roller skate as defined in claim 2 wherein: in the two rolling bearings, the length of the outer ring protruding out of the orifice of the assembly hole is 0.5-1.2mm, and the length of the convex part protruding out of the inner side surface of the vertical plate is 2.2-2.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570854.6U CN218207499U (en) | 2022-09-26 | 2022-09-26 | Rolling bearing and roller skate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570854.6U CN218207499U (en) | 2022-09-26 | 2022-09-26 | Rolling bearing and roller skate |
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| Publication Number | Publication Date |
|---|---|
| CN218207499U true CN218207499U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222570854.6U Active CN218207499U (en) | 2022-09-26 | 2022-09-26 | Rolling bearing and roller skate |
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| CN (1) | CN218207499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023193743A1 (en) * | 2022-04-07 | 2023-10-12 | 壮大材料科技(杭州)有限公司 | Rolling bearing and application thereof |
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- 2022-09-26 CN CN202222570854.6U patent/CN218207499U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023193743A1 (en) * | 2022-04-07 | 2023-10-12 | 壮大材料科技(杭州)有限公司 | Rolling bearing and application thereof |
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