阅读说明：本技术 一种新型单向滚针轴承 (Novel one-way needle bearing ) 是由 邱公才 邱公元 张应旗 于 2020-12-30 设计创作，主要内容包括：本发明涉及轴承技术领域,尤其涉及一种新型单向滚针轴承,解决现有技术中存在扭矩力小、使用寿命短、易打滑的缺点,包括外圈、设于外圈中且与外圈相适配的保持架、设于保持架上的若干弹性件及沿保持架环形均布的若干滚针,所述外圈的内腔与滚针之间形成有内圈,所述外圈的内腔中分别设有第一安装位置和第二安装位置,所述保持架的数量为两个且分别固定于所述第一安装位置和所述第二安装位置；本发明中通过将两侧的扶持架去除,并增设一个保持架,保持架的两端与轴承外圈两端靠近,当主轴插入到轴承内部后,能够立即起到锁止作用,避免主轴反向误动作。(The invention relates to the technical field of bearings, in particular to a novel one-way needle roller bearing, which solves the defects of small torque force, short service life and easy slipping in the prior art and comprises an outer ring, a retainer arranged in the outer ring and matched with the outer ring, a plurality of elastic pieces arranged on the retainer and a plurality of needle rollers annularly and uniformly distributed along the retainer, wherein an inner ring is formed between an inner cavity of the outer ring and the needle rollers, a first mounting position and a second mounting position are respectively arranged in the inner cavity of the outer ring, and the two retainers are respectively fixed at the first mounting position and the second mounting position; according to the invention, the holding frames on the two sides are removed, the holding frame is additionally arranged, the two ends of the holding frame are close to the two ends of the bearing outer ring, and when the main shaft is inserted into the bearing, the locking effect can be immediately realized, so that the reverse misoperation of the main shaft is avoided.)

1. The utility model provides a novel one-way bearing, includes outer lane (1), locate in outer lane (1) and with outer lane (1) looks adaptation holder (2), locate a plurality of elastic components on holder (2) and along a plurality of kingpins (21) of holder (2) annular equipartition, be formed with inner circle, its characterized in that between the inner chamber of outer lane (1) and kingpins (21): a first mounting position (100) and a second mounting position (200) are respectively arranged in an inner cavity of the outer ring (1), the number of the retainers (2) is two, the retainers are respectively fixed at the first mounting position (100) and the second mounting position (200), and inclined surface raceways matched with the roller pins (21) are respectively arranged on the inner walls of the first mounting position (100) and the second mounting position (200);

the outer ring is characterized by further comprising a first retaining edge (11) and a second retaining edge (12) which are used for limiting the retainer (2), wherein the first retaining edge (11) and the second retaining edge (12) are respectively fixed at two ends of the outer ring (1), and the end surfaces of the two ends of the retainer (2) opposite to each other are respectively in close contact with one side, located in the inner cavity of the outer ring (1), of the first retaining edge (11) and one side, located in the inner cavity of the second retaining edge (12);

the two retainers (2) and the outer ring (1) are coaxially arranged.

2. A novel unidirectional needle bearing as claimed in claim 1, characterized in that the end faces of the opposite ends of the two cages (2) are in close contact.

3. A new unidirectional needle bearing as claimed in claim 1, characterized in that both cages (2) are identical in size and shape.

4. The novel unidirectional needle bearing as claimed in claim 1, wherein the first rib (11) and the second rib (12) are both of an integrally formed structure with the outer ring (1), the first rib (11) and the second rib (12) are respectively formed with a first round hole (110) and a second round hole (120), the diameter of the first round hole (110) is the same as the outer diameter of the end of the retainer (2), and the diameter of the second round hole (120) is the same as the diameter of the inner hole of the retainer (2).

5. The novel unidirectional needle roller bearing as claimed in any one of claims 1 to 4, wherein the elastic member is a metal spring leaf (22), the retainer (2) is fixedly provided with a plurality of erection beams uniformly distributed along the circumference of the retainer (2), the erection beams are respectively provided with an installation blocking piece (23) and a fastening pressing piece (24) which are integrally formed, the installation blocking piece (23) is positioned in the middle of the erection beams, the fastening pressing pieces (24) are arranged in two and are symmetrically arranged, and the metal spring leaf (22) is clamped on the erection beams through the installation blocking piece (23) and the fastening pressing pieces (24).

6. The needle roller bearing according to claim 5, wherein the cage (2) and the bridge are of an integral structure.

Technical Field

The invention relates to the technical field of bearings, in particular to a novel one-way needle bearing.

Background

The one-way needle bearing is also called a needle clutch and consists of a punched outer ring and a plastic retainer; the retainer can be provided with a plastic reed or a stainless steel reed for guiding the roller pin, and the inclined surface roller path and the roller pin on the outer ring are used as locking devices. The surface of the bearing is provided with a groove, the bearing is mainly used for diabolo manufacturing enterprises, solid collar type one-way needle bearings are also proposed, the bearing is mainly used for fitness equipment enterprises, ultrathin one-way needle bearings are also developed, and the bearing is mainly used for precision machinery enterprises.

The one-way needle bearing in the prior art is shown in fig. 1-2, and comprises an outer ring 10, a retainer 30 and two holding frames 20, wherein the retainer 30 and the holding frames 20 are both arranged inside the outer ring 10, the two holding frames 20 are arranged on two sides of the retainer 30, and the holding frames 20 play a role in holding a main shaft, but in the actual use process, only when the main shaft is completely inserted into the bearing, the locking function can be achieved, in addition, because the holding frames 20 with weak functionality occupy the space inside the outer ring 10, the inner retainer 30 is only provided with one group, the torque force is small, the slipping condition is easy to occur, after the retainer 30 fails, the bearing is scrapped at the same time, and the service life is short.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a novel unidirectional needle bearing.

In order to achieve the purpose, the invention adopts the following technical scheme:

a novel one-way needle bearing comprises an outer ring, a retainer arranged in the outer ring and matched with the outer ring, a plurality of elastic pieces arranged on the retainer and a plurality of needle rollers annularly and uniformly distributed along the retainer, wherein an inner ring is formed between an inner cavity of the outer ring and the needle rollers, a first mounting position and a second mounting position are respectively arranged in the inner cavity of the outer ring, the two retainers are respectively fixed at the first mounting position and the second mounting position, and inclined surface raceways matched with the needle rollers are respectively arranged on the inner walls of the first mounting position and the second mounting position;

the retainer also comprises a first retaining edge and a second retaining edge which are used for limiting the retainer, the first retaining edge and the second retaining edge are respectively fixed at two ends of the outer ring, and the end surfaces of the opposite ends of the two retainers are respectively in close contact with one sides of the first retaining edge and the second retaining edge, which are positioned in the inner cavity of the outer ring;

the two retainers and the outer ring are coaxially arranged.

Through adopting above-mentioned technical scheme, the inside two holders that set up of outer lane, the flange of one end and both sides of holder pastes tight contact, and the opening part and the holder of outer lane are close to mutually, can ensure then to realize inserting the purpose that is the locking. The malfunction of the one-way bearing is avoided, and the torque force of the bearing is increased.

The present invention in a preferred example may be further configured to: the end faces of the opposite ends of the two holding frames are closely contacted.

By adopting the technical scheme, the inner space of the outer ring is completely utilized, the structure is more compact, and the manufacturing cost is reduced.

The present invention in a preferred example may be further configured to: the two holding frames are the same in size and shape.

By adopting the technical scheme, the outer ring can be conveniently produced in batches, and the structure of the outer ring is simplified.

The present invention in a preferred example may be further configured to: the first retaining edge and the second retaining edge are of an integrally formed structure, a first round hole and a second round hole are formed in the first retaining edge and the second retaining edge respectively, the diameter of the first round hole is the same as the outer diameter of the end portion of the retainer, and the diameter of the second round hole is the same as the diameter of the inner hole of the retainer.

Through adopting above-mentioned technical scheme, first flange and second flange accessible punching press form, simplify the installation and improve the holistic intensity of outer lane, and personnel can conveniently observe the condition of holder from the front side.

The present invention in a preferred example may be further configured to: the elastic piece is a metal spring piece, a plurality of beams which are uniformly distributed along the circumference of the retainer are fixedly arranged on the retainer, an installation separation blade and a fastening pressing sheet which are of an integrally-formed structure are respectively arranged on the beams, the installation separation blade is positioned in the middle of the beams, the fastening pressing sheets are arranged in two symmetrical arrangements, and the metal spring piece is clamped on the beams through the installation separation blade and the fastening pressing sheet.

Through adopting above-mentioned technical scheme, simple to operate is swift, and installation separation blade and straining preforming and erect the roof beam and adopt integrated into one piece to set up, be convenient for production and manufacturing.

The present invention in a preferred example may be further configured to: the retainer and the erection beam are of an integrally formed structure.

Through adopting above-mentioned technical scheme, but the holder is whole to be produced, and it is more convenient to make, is fit for the volume production.

The invention has the beneficial effects that:

1. according to the invention, the holding frames on the two sides are removed, the holding frame is additionally arranged, the two ends of the holding frame are close to the two ends of the bearing outer ring, and when the main shaft is inserted into the bearing, the locking effect can be immediately realized, so that the reverse misoperation of the main shaft is avoided.

2. The two retainers are arranged, so that the structure is compact and reasonable, the twisting force can be increased by adopting the two retainers, the slipping condition is avoided, when one retainer fails, the other retainer can still continue to work, the failed retainer can be used as a supporting frame, the supporting effect is achieved, the service life of the bearing is greatly prolonged, and the bearing is suitable for popularization and use.

Drawings

FIG. 1 is a schematic view of the overall structure of a prior art one-way needle bearing;

fig. 2 is a schematic structural view of a one-way needle bearing in the prior art with an outer ring removed.

In the figure: 10 outer ring, 20 holding frame and 30 holding frame.

FIG. 3 is a schematic view of the overall structure of the present embodiment;

FIG. 4 is a schematic view of the structure of FIG. 3 with the outer ring removed;

FIG. 5 is an exploded view of the present embodiment;

FIG. 6 is a front view of the present embodiment;

FIG. 7 is a rear view of the present embodiment;

FIG. 8 is a cross-sectional view taken at A-A of FIG. 6;

fig. 9 is a side sectional view of the present embodiment.

In the figure: 1 outer ring, 11 first flanges, 110 first round holes, 12 second flanges, 120 second round holes, 100 first mounting positions, 200 second mounting positions, 2 retainers, 21 roller pins, 22 metal spring pieces, 23 mounting retaining pieces and 24 fastening pressing pieces.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example (b):

referring to fig. 3, 4, 5 and 9, the novel unidirectional needle bearing disclosed by the invention comprises an outer ring 1, a retainer 2 arranged in the outer ring 1 and matched with the outer ring 1, a plurality of elastic pieces arranged on the retainer 2 and a plurality of needle rollers 21 annularly and uniformly distributed along the retainer 2, wherein an inner ring is formed between an inner cavity of the outer ring 1 and the needle rollers 21. In order to improve the torque force of the one-way needle roller 21 bearing, the inner cavity of the outer ring 1 is respectively provided with a first mounting position 100 and a second mounting position 200, the number of the retainers 2 is two and the retainers are respectively fixed at the first mounting position 100 and the second mounting position 200, and the inner walls of the first mounting position 100 and the second mounting position 200 are respectively provided with an inclined raceway matched with the needle rollers. In order to achieve the purpose that the spindle can be locked immediately when entering the outer ring 1, the spindle further comprises a first retaining edge 11 and a second retaining edge 12 for limiting the retainers 2, wherein the first retaining edge 11 and the second retaining edge 12 are respectively fixed at two ends of the outer ring 1, and end surfaces of two ends of the retainers 2, which are opposite to each other, are respectively in close contact with one sides of the first retaining edge 11 and the second retaining edge 12, which are positioned in an inner cavity of the outer ring 1; the two retainers 2 and the outer ring 1 are coaxially arranged. When the main shaft is inserted into the outer ring 1, the end part of the main shaft can be directly contacted with the roller pins 21 on the retainer 2, and the main shaft can only rotate in one direction when rotating, so that misoperation is avoided.

Referring to fig. 4, in order to fully utilize the space inside the outer race 1, the structure is more compact and the manufacturing cost is reduced. The end surfaces of the opposite ends of the two holding frames 2 are closely contacted.

Referring to fig. 4 and 8, the structure of the outer race 1 is simplified to facilitate mass production. The two holders 2 are identical in size and shape.

Referring to fig. 6, 7 and 9, in order to simplify the mounting and improve the strength of the entire outer race 1 by forming the first beads 11 and the second beads 12 by punching, a person can easily see the holder 2 from the front side. First flange 11 and second flange 12 all with outer lane 1 is the integrated into one piece structure, first flange 11 and second flange 12 are formed with first round hole 110 and second round hole 120 respectively, the aperture of first round hole 110 with the external diameter size of 2 tip of holder is the same, the aperture of second round hole 120 with the aperture size of 2 holes of holder is the same.

Referring to fig. 4, for the convenience and rapidness of installation, the installation baffle 23, the fastening pressing sheet 24 and the erection beam are integrally formed, so that the installation is convenient to produce and manufacture. The elastic piece is a metal spring piece 22, a plurality of girders which are uniformly distributed along the circumference of the retainer 2 are fixedly arranged on the retainer 2, an installation blocking piece 23 and a fastening pressing piece 24 which are integrally formed in structures are respectively arranged on the girders, the installation blocking piece 23 is positioned in the middle of the girders, the fastening pressing piece 24 is arranged into two parts and symmetrically arranged, and the metal spring piece 22 is clamped on the girders through the installation blocking piece 23 and the fastening pressing piece 24.

Referring to fig. 4, the retainer 2 can be produced integrally, and is more convenient to manufacture and suitable for mass production. The retainer 2 and the erection beam are of an integrated structure.

The implementation principle of the above embodiment is as follows: inclined surface roller paths arranged in the inner wall (namely the first mounting position 100 and the second mounting position 200) of the outer ring 1 and a roller pin group on the retainer 2 form a mechanism for locking the unidirectional rotation of the main shaft;

when the main shaft is inserted from an opening (namely, a first round hole 110 formed by the first flange 11) at the front part of the outer ring 1, the outer peripheral surface of the main shaft is directly contacted with the roller pins 21, when the main shaft rotates anticlockwise, the roller pin group is matched with the inclined surface roller path to achieve a meshing state, and the main shaft can drive the bearing to rotate together to play a role in transmitting power;

in addition, when the needle roller set rotates clockwise, the needle roller set is not limited by the inclined surface raceway, the main shaft can rotate relative to the bearing, the metal spring piece 22 arranged on the retainer 2 applies thrust to the needle roller 21, and the attachment stability of the needle roller 21 and the inclined surface raceway is improved;

furthermore, because the inner retainers 2 are arranged into two groups, the outer part of the main shaft is simultaneously contacted with the two groups of rolling needles 21, and the torque force can be greatly improved;

in addition, when one group of the retainers 2 fails, the other group of the retainers 2 can still play a role in locking the main shaft, and although the first group of the retainers 2 fails, the needle roller group in the first group of the retainers can still be in contact with the outside of the main shaft, so that the original support frame can be replaced, and the main shaft can be supported.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.