Flexible bearing convenient to assemble

Abstract

The utility model discloses a flexible bearing convenient to assemble. The flexible bearing comprises an outer ring, an inner ring and balls, according to the flexible bearing convenient to assemble, an inner ring comprises an upper ring body and a lower ring body, an assembling notch is formed in the edge of the inner side of the top of the upper ring body, an assembling step is arranged at the position, corresponding to the assembling notch, of the lower ring body, a first inserting ring is fixedly connected to the bottom face of the upper ring body, and a first inserting groove is formed in the position, corresponding to the first inserting ring, of the lower ring body; the outer edge of the top face of the assembling step is fixedly connected with a second inserting ring, a second inserting groove is formed in the position, corresponding to the second inserting ring, of the assembling notch, the upper ring body and the lower ring body are fixedly installed through a fixing bolt, and the inner ring is fixed in an assembled mode by matching the upper ring body and the lower ring body with the fixing bolt. After assembly and combination, the first inserting ring and the first inserting groove are inserted oppositely, and the second inserting ring and the second inserting groove are inserted oppositely, so that the positioning effect is achieved, the edges of the upper ring body and the lower ring body are aligned, and dislocation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flexible bearing, and specifically relates to a flexible bearing convenient to assemble. BACKGROUND

[0002] The harmonic drive transmission includes three basic components: wave generator, flexspline, rigid spline and flexible bearing. The flexible bearing is the core component, and the transmission reaches the performance requirement of high reduction ratio through the elastic deformation of the bearing. In the work, the inner ring is installed on the cam of oval shape, and bears the cyclic stress load in the work. The outer ring is installed on the flexspline, and elastically deforms with the rotation of the cam in the work, and not only bears the cyclic stress load, but also bears the alternating stress load. The flexible bearing of the past is a two-piece structure, which is divided into an inner ring and an outer ring, and the ball is installed between the inner ring and the outer ring. However, the structure is not convenient for the installation of the ball, and the inner ring needs to be placed obliquely in the outer ring. After the ball is put in, it is flattened. Not only is the installation inconvenient, but the installation method also needs to reserve more space for the ball, thereby increasing the play. Due to the functional requirements of the harmonic reducer, the large play of the flexible bearing will affect the transmission accuracy of the product, thereby the play of the ball needs to be reduced. In addition, the structure of the past cannot be disassembled after assembly.

[0003] In the patent file with the publication number CN214837811U, a flexible bearing convenient to assemble is disclosed, which includes an inner ring, an outer ring and balls installed between the inner ring and the outer ring. The outer ring is a one-piece structure. The inner ring is a split structure, including an upper ring body and a lower ring body distributed above and below. The upper ring body and the lower ring body are fixed by screws. By dividing the inner ring into the upper ring body and the lower ring body, the lower ring body is first put into the outer ring during assembly, then the balls are installed, and finally the upper ring body is locked and fixed on the lower ring body by screws to complete the assembly. This method reserves the installation space of the balls, not only convenient to assemble, but also can reduce the play of the balls, and it is easier to control the play within a reasonable range.

[0004] In the above-mentioned prior art, although the combination type bearing inner ring can realize the function of convenient assembly, the upper ring body and the lower ring body are flatly combined in the above-mentioned prior art, and are only locked and fixed by screws. Although the screw and the threaded hole can be tightly matched, the screw and the countersunk screw hole are not tightly matched, which causes the upper ring body and the lower ring body to be not well aligned after combination. Therefore, a new flexible bearing convenient to assemble is proposed to optimize the above-mentioned prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a flexible bearing convenient to assemble to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A flexible bearing of convenient assembly, including outer ring, inner race and ball, the inner race includes upper ring body and lower ring body, the upper ring body top inside edge is equipped with assembly gap, the lower ring body is equipped with assembly step at corresponding assembly gap, the bottom surface of upper ring body is fixedly connected with first plug-in ring, the lower ring body is equipped with first plug-in slot at corresponding first plug-in ring, first plug-in ring is inserted into first plug-in slot and is matched with first plug-in slot, the top surface outer edge of assembly step is fixedly connected with second plug-in ring, the second plug-in ring is inserted into the second plug-in slot and is matched with the second plug-in slot, and the upper ring body and the lower ring body are fixedly installed through fixed bolt.

[0008] As a further scheme of the utility model: the opposite sides of the outer ring and the inner race are jointly provided with notches, the ball is arranged in the notches and is matched with the notches, the notches on the inner race are symmetrically provided on the upper ring body and the lower ring body, and the clearance of the ball between the inner race and the outer race is 0.01mm-0.02mm.

[0009] As a further scheme of the utility model: the upper ring body and the lower ring body are jointly provided with positioning holes in a circle, the top of the upper ring body is provided with a step groove matched with the head of the fixed bolt corresponding to the positioning hole, the bottom of the lower ring body is provided with a threaded hole matched with the threaded end of the fixed bolt corresponding to the positioning hole, and the fixed bolt is inserted into the threaded hole and is threadedly connected.

[0010] As a further scheme of the utility model: the step groove and the positioning hole are jointly inserted with the positioning pin matched therewith, the head of the positioning pin is arranged in the step groove, the positioning pin is inserted into the positioning hole, the positioning pin is provided with a mounting hole matched with the fixed bolt, and the fixed bolt penetrates the mounting hole and the head is pressed on the positioning pin.

[0011] As a further scheme of the utility model: the inner side of the lower ring body is fixedly connected with a check ring, the check ring extends upward and is flush with the top surface of the upper ring body.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1、the inner race of the utility model is formed by the upper ring body and the lower ring body cooperating with the fixed bolt, the first plug-in ring and the first plug-in slot are inserted, the second plug-in ring and the second plug-in slot are inserted, the positioning effect is formed, so that the edges of the upper ring body and the lower ring body are aligned, and misalignment is avoided.

[0014] 2、Although the upper ring body and the lower ring body are fixed through the fixing bolts, the upper ring body and the lower ring body can be inserted through the first plug-in ring and the first plug-in groove, the second plug-in ring and the second plug-in groove to form limiting, and the positioning pin is inserted into the positioning hole to form alignment limiting effect, so that the upper ring body and the lower ring body are rotationally limited, the bolt is directly subjected to the rotating force, and the bearing capacity of the bolt is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a flexible bearing convenient to assemble.

[0016] Figure 2 It is a sectional view of a flexible bearing convenient to assemble.

[0017] Figure 3 It is an exploded structural view of a flexible bearing convenient to assemble.

[0018] In the figure: 1, outer ring; 2, inner ring; 3, ball; 4, notch; 5, upper ring body; 6, lower ring body; 7, assembly gap; 8, assembly step; 9, first plug-in ring; 10, first plug-in groove; 11, second plug-in ring; 12, second plug-in groove; 13, fixing bolt; 14, positioning hole; 15, step groove; 16, positioning pin; 17, mounting hole; 18, check ring; 19, threaded hole. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Embodiment one:

[0021] Please refer to Figures 1-2The utility model discloses a flexible bearing of convenient assembly, including outer ring 1, inner race 2 and ball 3, the inner race 2 includes upper ring body 5 and lower ring body 6, and the top inner side edge of upper ring body 5 is equipped with assembly gap 7, and lower ring body 6 is equipped with assembly step 8 at corresponding assembly gap 7, and the bottom surface of upper ring body 5 is fixedly connected with first plug-in ring 9, and lower ring body 6 is equipped with first plug-in groove 10 at corresponding first plug-in ring 9, and first plug-in ring 9 inserts into first plug-in groove 10 and with first plug-in groove 10 is adapted, and the top surface outer edge of assembly step 8 is fixedly connected with second plug-in ring 11, and the second plug-in ring 11 is equipped with second plug-in groove 12 at corresponding second plug-in ring 11 on assembly gap 7, and the second plug-in ring 11 inserts into second plug-in groove 12 and with second plug-in groove 12 is adapted, and upper ring body 5 and lower ring body 6 are fixedly installed through fixed bolt 13.

[0022] The inner race 2 is fixed through the cooperation of upper ring body 5 and lower ring body 6 and fixed bolt 13, and is assembled and combined, and first plug-in ring 9 and first plug-in groove 10 are inserted, and second plug-in ring 11 and second plug-in groove 12 are inserted, and positioning effect is formed, so that the edges of upper ring body 5 and lower ring body 6 are aligned, and misalignment is avoided.

[0023] The opposite sides of outer ring 1 and inner race 2 are equipped with slot 4 in common, and ball 3 is arranged in slot 4 and with slot 4 is adapted, and the slot 4 on inner race 2 is symmetrically equipped on upper ring body 5 and lower ring body 6, and the play of ball 3 between inner race 2 and outer ring 1 is 0.01mm-0.02mm.

[0024] Embodiment two:

[0025] Please refer to Figures 2-3 The utility model discloses a flexible bearing of convenient assembly, and the common circumferential positioning hole 14 is equipped on upper ring body 5 and lower ring body 6, and the top of upper ring body 5 is equipped with the step groove 15 of being adapted with the bolt head of fixed bolt 13 corresponding the positioning hole 14, and the bottom of lower ring body 6 is equipped with the threaded hole 19 of being adapted with the screw end of fixed bolt 13 corresponding the positioning hole 14, and fixed bolt 13 is inserted into threaded hole 19 and is connected in screw thread.

[0026] The step groove 15 and the positioning hole 14 are inserted with the positioning pin 16 being adapted with them in common, and the head of positioning pin 16 is arranged in step groove 15, and positioning pin 16 is inserted into positioning hole 14, and the mounting hole 17 of being adapted with fixed bolt 13 is equipped on positioning pin 16, and fixed bolt 13 penetrates mounting hole 17 and the bolt head is pressed on positioning pin 16.

[0027] Although the upper ring body 5 and the lower ring body 6 are fixed by the fixing bolt 13, the upper ring body 5 and the lower ring body 6 can be limited by the first plug-in ring 9 and the first plug-in groove 10, the second plug-in ring 11 and the second plug-in groove 12, and the positioning pin 16 is inserted into the positioning hole 14 to form the alignment limiting effect, so that the upper ring body 5 and the lower ring body 6 are rotationally limited, the bolt is directly avoided from being subjected to the rotating force, and the bearing force of the bolt is reduced.

[0028] Embodiment three:

[0029] Please refer to Figure 2 In the embodiment of the utility model, the inner side of the lower ring body 6 is fixedly connected with a check ring 18, the check ring 18 extends upward and is flush with the top surface of the upper ring body 5.

[0030] The connection surface of the rotating shaft is an integral whole through the arrangement of the inner check ring 18.

[0031] The working principle of the utility model is:

[0032] When in use, the ball 3 is placed in the slot 4 of the outer ring 1, then the upper ring body 5 and the lower ring body 6 are combined on the two sides of the outer ring 1 to form the inner ring 2, so that the ball 3 is limited, when the upper ring body 5 and the lower ring body 6 are combined, the assembly gap 7 is plugged with the assembly step 8, the first plug-in ring 9 is plugged with the first plug-in groove 10, the second plug-in ring 11 is plugged with the second plug-in groove 12, the upper ring body 5 and the lower ring body 6 are further rotated to align the positioning hole 14, then the positioning pin 16 is inserted into the positioning hole 14, the fixing bolt 13 is further inserted into the mounting hole 17, the fixing bolt 13 is screwed into the threaded hole 19 and abuts against the positioning pin 16, and the limiting effect is formed, so that the universal flexible bearing is assembled without extrusion, and the assembly is more convenient.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flexible bearing for easy assembly comprising an outer ring (1), an inner ring (2) and balls (3), characterized in that: The inner ring (2) comprises an upper ring body (5) and a lower ring body (6), the upper ring body (5) is provided with an assembly notch (7) on the top inner side edge, the lower ring body (6) is provided with an assembly step (8) corresponding to the assembly notch (7), the bottom surface of the upper ring body (5) is fixedly connected with a first plug-in ring (9), the lower ring body (6) is provided with a first plug-in slot (10) corresponding to the first plug-in ring (9), the first plug-in ring (9) is inserted into the first plug-in slot (10) and matched with the first plug-in slot (10), the top surface outer edge of the assembly step (8) is fixedly connected with a second plug-in ring (11), the assembly notch (7) is provided with a second plug-in slot (12) corresponding to the second plug-in ring (11), the second plug-in ring (11) is inserted into the second plug-in slot (12) and matched with the second plug-in slot (12), and the upper ring body (5) and the lower ring body (6) are fixedly installed through a fixing bolt (13).

2. A flexible bearing for easy assembly according to claim 1, characterized in that: The outer ring (1) and the inner ring (2) are provided with a notch (4) on the opposite sides, the ball (3) is arranged in the notch (4) and matched with the notch (4), and the notch (4) on the inner ring (2) is symmetrically provided on the upper ring body (5) and the lower ring body (6).

3. A flexible bearing for easy assembly according to claim 1, characterized in that: The upper ring body (5) and the lower ring body (6) are provided with a positioning hole (14) on the common circumference, the top of the upper ring body (5) is provided with a step groove (15) matched with the bolt head of the fixing bolt (13) corresponding to the positioning hole (14), the bottom of the lower ring body (6) is provided with a threaded hole (19) matched with the threaded end of the fixing bolt (13) corresponding to the positioning hole (14), and the fixing bolt (13) is inserted into the threaded hole (19) and threadedly connected.

4. A flexible bearing for easy assembly according to claim 3, characterized in that: The step groove (15) and the positioning hole (14) are jointly inserted with a positioning pin (16) matched therewith, the positioning pin (16) is provided with a mounting hole (17) matched with the fixing bolt (13), and the fixing bolt (13) penetrates through the mounting hole (17) and the bolt head is pressed on the positioning pin (16).

5. A flexible bearing for easy assembly according to claim 1, characterized in that: The inner side of the lower ring body (6) is fixedly connected with a check ring (18), the check ring (18) extends upward and is flush with the top surface of the upper ring body (5).

Images