JP2015137666A - Corrugated press holder and bearing with corrugated press holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrugated press holder in which when a pair of holders constituting the corrugated press holder are fixed by rivets, they can be fixed without producing any clearance between ring-like members and vibration of the holder and occurrence of irregular sound at the time of rotation of a bearing are restricted.SOLUTION: This invention relates to a corrugated press holder comprised of a pair of ring members press formed into a corrugated shape and rivets for fixing the pair of ring members to each other. The rivet has a fixing head at its one end and has a linear barrel part having thickness less than that of the ring plate, a fine tapered intermediate part and a linear extremity end part in this order from the head part toward the other end. Then, a tapered inclination angle of the intermediate part of a taper in respect to the rivet axis center is set in a range of about 4° to 10°, thereby it is possible to fix a pair of ring members without producing any clearance between the ring members when the ring members are fixed by rivets.

Description

  The present invention relates to a corrugated press cage and a bearing provided with the corrugated press cage.

  Conventionally, the corrugated press cage 3 shown in FIG. 5 and FIG. 6 has a structure in which two annular plate members (hereinafter referred to as cage components) 20 are combined. The flat plate-like flat portion 12 having a through-hole 19 through which the rivet 16 is inserted and the concave portion 14 having a substantially hemispherical depression than the flat portion 12 are alternately connected.

  In this case, the two cage structures 20 are opposed to each other so that the concave portions 14 are recessed in opposite directions and the flat portions 12 communicate with each other through the through-holes 19, and the through-holes communicated with each other are provided. 19 (hereinafter, the two through-holes 19 in this state are referred to as communication holes 21), the rivet 16 is inserted, and one end of the shaft thereof is caulked so that the two retainer components 20 are combined together. ing. By combining the two cage structures 20 in this manner, the substantially spherical concave spaces formed by the opposed concave portions 14 are arranged at predetermined intervals in the circumferential direction, and the corrugated holding with the concave spaces as pockets 18 is provided. Can be configured.

  As shown in FIG. 5, the corrugated cage has a structure in which two opposing cage components 20 are integrally combined by caulking the rivets 16 inserted one by one into each communication hole 21. doing. In addition, in a state before caulking, each rivet 16 is provided with a head 11 having a diameter larger than the diameter of the communication hole 21 at its base end (upper end in FIG. 5). The cylindrical body 13 is set to a constant diameter slightly larger than the diameter of the communication hole 21 from the head 11 toward the tip (the lower end in the figure), and the taper extends from the body. The taper portion 14 is extended.

  When caulking the rivet 16 inserted into the communication hole 21, one end portion (tip portion) of the tapered portion 14 is pressed and caulked with a punch or the like (not shown) to protrude from the communication hole 21. While shortening the portion, the diameter is expanded (enormously) until the diameter becomes larger than the diameter of the communication hole 21. Further, at that time, the diameter of the portion inserted into the communication hole 21 is expanded (enormously) until the diameter is substantially the same as the diameter of the communication hole 21.

Japanese Utility Model Publication No. 5-47545

  However, in the corrugated press cage adopting the structure of Patent Document 1, the taper inclination angle is small because the taper portion of the rivet is formed from the inside of the communication hole to the tip of the rivet and has a very long shape. For this reason, when the pair of cage constituting bodies constituting the cage are combined, the tapered portion of the rivet is easily caught in the rivet insertion hole provided in the ring. As a result, the pair of cage components cannot be brought into close contact with each other, and a large gap may be formed between the pair of cage components. If the rivet is caulked while holding this gap, a gap greater than the predetermined gap will be created between the pocket formed by the corrugated press cage and the ball in the pocket, so the cage will vibrate when the bearing rotates. There was a concern that caused abnormal noise.

  The present invention has been made in view of the above-described problems, and its purpose is to provide a gap between the ring-shaped members when the pair of cage constituting bodies constituting the corrugated press cage is rivet-fixed. An object of the present invention is to provide a corrugated press cage that can be fixed without being generated, and that suppresses the vibration of the cage and the generation of abnormal noise during rotation of the bearing.

  Therefore, in order to solve the above-described problem, the present invention provides a corrugated press retainer including a pair of ring members press-molded into corrugations and a rivet that fixes the pair of ring members to each other. A fixing head is provided at one end, and a linear body portion having a thickness equal to or less than the ring plate thickness, a tapered taper-shaped intermediate portion, and a linear tip portion are successively arranged from the head portion toward the other end side. The inclination angle of the taper with respect to the rivet axis is in the range of 4 degrees to 10 degrees.

  According to the corrugated press cage of the present invention, when the pair of ring members constituting the cage are rivet-fixed to each other, the cage can be fixed without generating a gap between the ring members. It is assembled with dimensions, and it is possible to suppress cage vibration and abnormal noise generation during bearing rotation.

It is a figure which shows the corrugated press retainer which concerns on this invention. It is a rivet part expanded sectional view of the wave type press holder concerning the present invention. It is a figure which shows the rolling bearing provided with the corrugated press retainer which concerns on this invention. It is a rivet part expanded sectional view of the corrugated press maintenance machine concerning other examples. It is a rivet part expanded sectional view of the conventional corrugated press retainer. It is a figure which shows the conventional corrugated press retainer.

  Hereinafter, a corrugated press cage according to an embodiment of the present invention and a bearing using the corrugated press cage will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the bearing 10 includes an inner ring 2, an outer ring 1, a plurality of rolling elements 4 that are between the inner ring and the outer ring and relatively rotate the inner ring and the outer ring, and a plurality of rolling elements 4. A corrugated press holder 3 is provided for holding the rolling elements at equal intervals. The corrugated press retainer 3 includes a pair of ring members 30 in which flat portions 30a and curved portions 30b are alternately pressed into a wave shape, and is formed of rivets 31 that fix the pair of ring members 30 to each other.

  The corrugated press retainer 3 forms a pocket 3a for accommodating the rolling element 4 by a plurality of curved portions 30b by combining the ring members 30, and the pair of ring members 30 are flat. A rivet 31 is inserted and fixed in a through hole 30c provided in the portion 30a.

  Further, as shown in FIG. 2, the rivet 31 includes a fixing head portion 31 a larger than the diameter of the through hole at one end of the through hole 30 c of the pair of ring members 30, toward the other end side from the head portion. A straight body portion 31b, a tapered tapered intermediate portion 31c, and a straight tip portion 31d are provided. In the rivet axial direction, the rivet body 31b is within the plate thickness range of the ring member 30, and is fitted to the ring member to temporarily position each other. Further, the taper shape of the intermediate portion 31c is provided so as to taper through the holes of the pair of ring members while maintaining a constant inclination angle in the range of 4 degrees to 10 degrees with respect to the rivet axis. A guide function for smoothly inserting the rivet into the ring member is provided. Furthermore, the other end side of the rivet is provided with a tip portion formed in a straight line. When the rivet is fixed, it is pressed by a punch or the like (not shown), and this is crushed and expanded in diameter to fix the other end side. The head is formed.

  Further, as another embodiment of the rivet, as shown in FIG. 4, a rivet head 31a provided in a hemispherical shape may be used. Furthermore, instead of the tapered intermediate portion provided on the rivet, an intermediate portion having an R shape may be used.

  Although the structure of the drive device of the present invention has been described in detail above, the present invention is not limited to the above examples, and various improvements and modifications may be made without departing from the scope of the present invention. Of course.

DESCRIPTION OF SYMBOLS 1 ... Outer ring 2 ... Inner ring 3 ... Cage 4 ... Rolling body 10 ... Bearing 30 ... Ring member 31 ... Rivet

Claims (1)

  In the corrugated press retainer comprising a pair of ring members press-molded into corrugations and a rivet for fixing the pair of ring members to each other, the rivet has a fixing head at one end, from the head In order toward the other end side, a linear body portion having a thickness equal to or less than the thickness of the ring plate, a tapered tapered intermediate portion, and a linear tip portion are provided, and the inclination angle of the taper with respect to the rivet axis is 4 degrees to A corrugated press retainer characterized by having a range of 10 degrees.

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