Bidirectional rotation limiting mechanism larger than 180 degrees and smaller than 360 degrees

Abstract

The invention discloses a bidirectional rotation limiting mechanism larger than 180 degrees and smaller than 360 degrees. The bidirectional rotation limiting mechanism comprises a rotating seat, a limiting sliding block, a mounting plate, a limiting sliding block sliding plate, a cover plate and a shifting shaft, and the end face of the end, facing the mounting plate, of the rotating seat is perpendicularly connected with one end of the shifting shaft; the other end of the shifting shaft is positioned in a through groove formed in the mounting plate; an arc-shaped sliding groove is formed in the surface of the limiting sliding block mounting plate, and a sliding block body of the limiting sliding block is slidably connected into the arc-shaped sliding groove; one part of the sliding shaft A is also located in the through groove formed in the mounting plate, and the rotating track of the shifting shaft coincides with the motion track of one part of the sliding shaft A. The rotation track of the shifting shaft coincides with part of the motion track of the sliding shaft A, rotation limiting of the rotation body in the clockwise and anticlockwise range larger than 180 degrees and smaller than 360 degrees is achieved, and the rotation limiting device has the advantages of being simple in structure, reasonable in design and convenient to use.

Description

Technical Field

[0001] The invention relates to a rotation limiting mechanism, in particular to a rotation limiting mechanism with a bidirectional range of greater than 180° and less than 360°. Background Art

[0002] Rotation limit mechanisms are used in many fields to prevent the rotating body from rotating too much to meet work requirements. The current limit point of the rotation limit mechanism is the point limit. If the motor drive is adopted, the servo motor can accurately control the angle, and the fixed limit point only plays a protective role; and for the rotating body that needs manual operation, the point limit method makes it difficult to control during manual operation. Summary of the invention

[0003] The object of the present invention is to provide a rotation limiting mechanism with a bidirectional range greater than 180° and less than 360°, so as to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A two-way rotation limit mechanism with a rotation angle greater than 180° and less than 360°, comprises a rotating seat, a limit slider, a mounting plate, a limit slider sliding plate, a cover plate and a toggle shaft, wherein the rotating seat is vertically connected to one end of the toggle shaft on an end surface of one end of the mounting plate, and the toggle shaft is eccentrically arranged; the other end of the toggle shaft is located in a through groove opened on the mounting plate; the other side of the mounting plate is fixedly connected to one side of the sliding plate of the limit slider by screws, and the other side of the sliding plate of the limit slider is fixedly connected to the cover plate by screws; an arc-shaped groove is opened on the surface of the mounting plate of the limit slider, and a slider body of the limit slider is slidably connected in the arc-shaped groove, and the two ends of the limit slider are respectively connected to a sliding shaft A and a sliding shaft B, and the sliding shaft A is set through an arc-shaped through groove A correspondingly opened at the bottom of the arc-shaped groove, and the sliding shaft B is set through an arc-shaped through groove B correspondingly opened on the cover plate; a part of the sliding shaft A is also located in the through groove opened on the mounting plate, and the rotation trajectory of the toggle shaft coincides with a part of the movement trajectory of the sliding shaft A.

[0005] As a further solution of the present invention: the tail of the rotating seat is integrally formed with a rotating shaft and the rotating shaft is rotatably connected to the bearing seat through a bearing, the bearing seat is fixedly connected to the end of the ring member by screws, and the ring member is also fixedly connected to one side of the mounting plate by screws.

[0006] As a further solution of the present invention: one end of the bearing seat away from the mounting plate is connected to the rear cover by screws.

[0007] As a further solution of the present invention: the mounting plate is connected to the equipment bracket via a connecting piece.

[0008] As a further solution of the present invention: a buffer mechanism is installed on the cover plate.

[0009] As a further solution of the present invention: the buffer mechanism includes a swing arm, a sleeve, a torsion spring and a fixed shaft, the fixed shaft is vertically connected to the cover plate, the fixed shaft is located at the center of the arc-shaped through groove B, the sleeve is sleeved on the outside of the fixed shaft, the outer surface of the fixed shaft is connected to one end of the swing arm, and the other end of the swing arm has a slot and is clamped to the sliding shaft B of the limiting slider, a torsion spring is sleeved between the sleeve and the fixed shaft, one end of the torsion spring is fixedly connected to the hole opened in the swing arm, and the other end of the torsion spring is clamped in the groove opened on the surface of the fixed shaft along the axial direction.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the rotation limit of the rotating body within the range of greater than 180° and less than 360° clockwise and counterclockwise by coinciding the rotation trajectory of the toggle shaft with a part of the motion trajectory of the sliding shaft A. The present invention has a simple structure, reasonable design and convenient use.

[0011] The cover plate can press the slider body of the slider into the arc-shaped slide groove, so that the slider has greater friction when moving, so that after the toggle shaft is rotated to touch the slider, the difficulty of rotation increases, so that when manually operating at a uniform speed, the change in rotation force can be felt, which is convenient for manual control.

[0012] The process in which the toggle shaft rotates to touch the slider cooperates with the buffer mechanism to achieve a relatively stable limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the exploded structure of a rotation limit mechanism with a bidirectional range greater than 180° and less than 360°.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of an angle of a rotation limit mechanism with a bidirectional angle greater than 180° and less than 360°.

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of another angle of the rotation limit mechanism with a bidirectional range greater than 180° and less than 360°.

[0016] Figure 4 The diagram is a connection diagram of a rotating seat and a toggle shaft in a rotating limit mechanism with a bidirectional rotation angle greater than 180° and less than 360°.

[0017] Figure 5 It is a structural schematic diagram of a sliding plate of a limit slider in a rotation limit mechanism with a bidirectional rotation angle greater than 180° and less than 360°.

[0018] Figure 6 It is a schematic diagram of a limit slider in a rotation limit mechanism with a bidirectional rotation angle greater than 180° and less than 360°.

[0019] Figure 7It is a schematic diagram of the front side of a rotation limit mechanism with a bidirectional range greater than 180° and less than 360°.

[0020] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at AA in the middle.

[0021] Figure 9 The present invention is a structural schematic diagram of a buffer unit used in a rotation limit mechanism with a bidirectional rotation angle greater than 180° and less than 360°.

[0022] Figure 10 for Figure 9 Schematic diagram of the enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1-8 In the embodiment of the present invention, a two-way rotation limit mechanism with a rotation angle greater than 180° and less than 360° includes a rear cover 1, a bearing seat 2, a rotating seat 3, a ring member 4, a limit slider 5, a mounting plate 6, a limit slider sliding plate 7, a cover plate 8, a connecting member 9, a toggle shaft 10 and a positioning pin 11. The tail of the rotating seat 3 is integrally formed with a rotating shaft, and the rotating shaft is rotatably connected to the bearing seat 2 through a bearing (not shown in the figure). The bearing seat 2 is fixedly connected to the end of the ring member 4 by screws, and the ring member 4 is also fixedly connected to one side of the mounting plate 6 by screws; One end of the rotating seat 3 facing the mounting plate 6 is vertically connected to one end of the toggle shaft 10, and the toggle shaft 10 is eccentrically arranged; the other end of the toggle shaft 10 is located in a through groove provided on the mounting plate 6; and when the rotating seat 3 rotates, the toggle shaft 10 can rotate in the through groove; The other side of the mounting plate 6 is fixedly connected to one side of the limit slider sliding plate 7 by screws, and the other side of the limit slider sliding plate 7 is fixedly connected to the cover plate 8 by screws. An arc-shaped slide groove 13 is provided on the surface of the limit slider mounting plate 7, and a slide body 16 of the limit slider 5 is slidably connected in the arc-shaped slide groove 13. The two ends of the limit slider 5 are respectively connected to the sliding shaft A15 and the sliding shaft B17. The sliding shaft A15 is arranged through the arc-shaped through groove A14 correspondingly opened at the bottom of the arc-shaped slide groove 13, and the sliding shaft B17 is arranged through the arc-shaped through groove B12 correspondingly opened on the cover plate 8, so that the limit slider 5 can slide stably; The cover plate 8 can press the slider body 16 of the slider 5 into the arc-shaped slide groove 13, so that the slider 5 has greater friction when moving, so that after rotating until the dial shaft 10 touches the slider, the difficulty of rotation increases, so that when manually operating at a uniform speed, the change in rotation force can be felt.

[0025] A portion of the sliding shaft A15 is also located in the through groove opened on the mounting plate 6, and the rotation trajectory of the toggle shaft 10 coincides with a portion of the movement trajectory of the sliding shaft A15; so that the rotating seat 3 connected to the toggle shaft 10 can rotate in a bidirectional angle range greater than 180° and less than 360°.

[0026] The mounting plate 6 can be connected to the equipment bracket via a connecting piece 9 .

[0027] In the actual installation process, the annular member 4 can be positioned on the mounting plate 6 with the assistance of the positioning pins 11 and then reinforced with bolts.

[0028] One end of the bearing seat 2 away from the mounting plate 6 is connected to the rear cover 1 by screws.

[0029] The rotating shaft integrally formed at the rear of the rotating seat 3 can be directly connected to the working rotating body, so that the range of rotation during operation can be greater than 180° and less than 360° in both directions.

[0030] See also Figures 9-10 The buffer mechanism 18 is installed on the cover plate 8, and the buffer mechanism 18 includes a swing arm 19, a sleeve 20, a torsion spring 21 and a fixed shaft 22. The fixed shaft 22 is vertically connected to the cover plate 8, and the fixed shaft 22 is located at the center of the arc groove B12. The sleeve 20 is sleeved on the outside of the fixed shaft 22. The outer surface of the fixed shaft 22 is connected to one end of the swing arm 19. The other end of the swing arm 19 is provided with a slot and clamped with the sliding shaft B17 of the limit slider 5. A torsion spring 21 is sleeved between the sleeve 20 and the fixed shaft 22. One end of the torsion spring 21 is fixedly connected to the hole opened in the swing arm 19, and the other end of the torsion spring 21 is clamped in the groove opened along the axial direction on the surface of the fixed shaft 22, so that the torsion spring 21 can generate a reset force when the swing arm 19 rotates; when the limit slider 5 is located in the middle of the arc-shaped through groove B12, the torsion spring 21 is in a natural state, so that every time the toggle shaft 10 rotates to drive the limit slider 5 to move, the torsion spring 21 starts to work to generate a buffer, reduce the impact and the noise and deformation caused by the impact.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-way rotation limit mechanism with a range of greater than 180° and less than 360°, comprising a rotating seat (3), a limit slider (5), a mounting plate (6), a limit slider sliding plate (7), a cover plate (8) and a toggle shaft (10), characterized in that: The rotating seat (3) is vertically connected to one end of the toggle shaft (10) on one end surface facing the mounting plate (6), and the toggle shaft (10) is eccentrically arranged; the other end of the toggle shaft (10) is located in a through groove provided on the mounting plate (6); the other side of the mounting plate (6) is fixedly connected to one side of the limit slider sliding plate (7) by screws, and the other side of the limit slider sliding plate (7) is fixedly connected to the cover plate (8) by screws; the surface of the limit slider mounting plate (7) is provided with an arc-shaped sliding groove (13), and the arc-shaped sliding groove (13) is slidably connected to the cover plate (8). The slider body (16) of the limit slider (5) has two ends respectively connected to a slide shaft A (15) and a slide shaft B (17), wherein the slide shaft A (15) is arranged through an arc-shaped through groove A (14) correspondingly opened at the bottom of the arc-shaped slide groove (13), and the slide shaft B (17) is arranged through an arc-shaped through groove B (12) correspondingly opened on the cover plate (8); a portion of the slide shaft A (15) is also located in the through groove opened on the mounting plate (6), and the rotation trajectory of the toggle shaft (10) coincides with a portion of the movement trajectory of the slide shaft A (15).

2. The two-way rotation limiting mechanism with an angle greater than 180° and less than 360° according to claim 1, characterized in that: The rear portion of the rotating seat (3) is integrally formed with a rotating shaft, and the rotating shaft is rotatably connected to the bearing seat (2) via a bearing. The bearing seat (2) is fixedly connected to the end of the ring member (4) via screws, and the ring member (4) is also fixedly connected to one side of the mounting plate (6) via screws.

3. The two-way rotation limiting mechanism with an angle greater than 180° and less than 360° according to claim 1, characterized in that: One end of the bearing seat (2) away from the mounting plate (6) is connected to the rear cover (1) via screws.

4. The two-way rotation limiting mechanism with an angle greater than 180° and less than 360° according to claim 1, characterized in that: The mounting plate (6) is connected to the equipment bracket via a connecting piece (9).

5. The two-way rotation limiting mechanism with an angle greater than 180° and less than 360° according to claim 1, characterized in that: A buffer mechanism (18) is installed on the cover plate (8).

6. The two-way rotation limiting mechanism with an angle greater than 180° and less than 360° according to claim 1, characterized in that: The buffer mechanism (18) comprises a swing arm (19), a shaft sleeve (20), a torsion spring (21) and a fixed shaft (22); the fixed shaft (22) is vertically connected to the cover plate (8); the fixed shaft (22) is located at the center of the arc-shaped through groove B (12); the shaft sleeve (20) is sleeved on the outside of the fixed shaft (22); the outer surface of the fixed shaft (22) is connected to one end of the swing arm (19); the other end of the swing arm (19) is provided with a slot and is clamped with the sliding shaft B (17) of the limit slider (5); a torsion spring (21) is sleeved between the shaft sleeve (20) and the fixed shaft (22); one end of the torsion spring (21) is fixedly connected to a hole provided in the swing arm (19); the other end of the torsion spring (21) is clamped in a slot provided on the surface of the fixed shaft (22) along the axial direction.

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