Plane mechanical rotation angle limiting device

Abstract

The utility model relates to the technical field of rotation limiting devices, in particular to a plane mechanical rotation angle limiting device which comprises a bottom plate, a plane fixing piece, a rotating shaft and a supporting outer sleeve, the supporting outer sleeve is arranged on the bottom plate, the rotating shaft is rotatably arranged in the supporting outer sleeve, and the plane fixing piece is rotatably sleeved at the upper end of the rotating shaft. A limiting column is arranged on one side of the rotating shaft, and a limiting groove is formed in the plane fixing piece. The upper end face of the supporting outer sleeve abuts against the lower end face of the plane fixing piece in a sliding mode, a plurality of positioning assemblies are annularly arranged on the upper end face of the supporting outer sleeve at equal intervals, an annular sliding groove is formed in the lower end face of the plane fixing piece, and a plurality of positioning holes are annularly formed in the annular sliding groove at equal intervals. A plurality of first fixing holes are formed in the bottom plate in a penetrating mode, and a plurality of second fixing holes are formed in the plane fixing piece in a penetrating mode. According to the utility model, the positioning of the cart table top is realized, the rotary positioning and quick resetting of the cart table top are facilitated, the use effect is improved, the time of a user is saved, and the structure is novel and compact.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation limiting devices, in particular to a planar mechanical rotation angle limiting device. Background Art

[0002] Currently, most of the plane rotation devices on the market are 360°. The traditional plane limit angle devices on the market are relatively simple, mostly a disc damping rotation device, which can be rotated to any angle without limit, making it inconvenient to position; when resetting, the table position needs to be adjusted manually, which is extremely inconvenient to use and wastes the operator's time. Summary of the Invention

[0003] The utility model aims to solve the problems of the prior art and provides a planar mechanical rotation angle limiting device, which realizes the positioning of the cart table, facilitates the rotation positioning and rapid reset of the cart table, improves the use effect, saves the user's time, and has a novel and compact structure.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The utility model provides a planar mechanical rotation angle limiting device, which includes a base plate, a planar fixing part, a rotating shaft and a supporting sleeve, the supporting sleeve is arranged on the base plate, the rotating shaft is rotatably arranged in the supporting sleeve, and the planar fixing part is rotatably sleeved with the upper end of the rotating shaft; the upper end surface of the supporting sleeve is in sliding contact with the lower end surface of the planar fixing part, the upper end surface of the supporting sleeve is provided with a plurality of positioning components at equal intervals, the lower end surface of the planar fixing part is provided with an annular slide groove, and a plurality of positioning holes are provided at equal intervals in the annular slide groove, and the positioning components are arranged corresponding to the positioning holes; the base plate is penetrated by a plurality of first fixing holes, and the planar fixing part is penetrated by a plurality of second fixing holes.

[0006] Wherein, a nylon sleeve is provided between the supporting sleeve and the rotating shaft.

[0007] In which, the positioning assembly includes a spring and a positioning bead, and the upper end surface of the support sleeve is provided with a plurality of positioning grooves at equal intervals. One end of the spring is connected to the bottom wall in the positioning groove, and the other end of the spring is connected to the positioning bead. The upper end of the positioning bead protrudes out of the positioning groove and slides into contact with the annular slide groove.

[0008] Wherein, the upper end surface of the supporting sleeve is further provided with a nylon gasket.

[0009] Wherein, the nylon gasket and other spacer rings are provided with a plurality of through-holes, and the through-holes are arranged corresponding to the positioning components.

[0010] Among them, a limiting plate is provided at the upper end of the rotating shaft, a rotating groove is opened in the middle of the planar fixing part, the rotating shaft is rotatably set in the rotating groove, and a positioning groove is also opened at the upper end of the planar fixing part, the limiting plate is accommodated in the positioning groove, and the positioning groove is connected to the rotating groove.

[0011] Among them, a limiting column is provided on one side of the rotating shaft, and the planar fixing piece is provided with a limiting groove that slides with the limiting column; the limiting column is provided on one side of the lower end surface of the limiting plate, and the limiting groove is connected to the positioning groove.

[0012] Wherein, the supporting sleeve is detachably connected to the base plate.

[0013] Wherein, the supporting sleeve and the base plate are integrally formed.

[0014] Beneficial effects of the utility model:

[0015] When the present invention is in use, the first fixing hole of the base plate cooperates with the external bolts to fix the base plate to the fixed sheet metal of the cart, and the second fixing hole of the planar fixing part is fixed to the cart table through the external bolts, and then the table is pushed so that the upper end of the positioning assembly falls into the positioning hole to achieve the positioning effect; wherein, under the cooperation of the rotating shaft and the supporting sleeve, a mutual rotation effect is achieved, thereby enabling the cart table to rotate relative to the supporting sleeve, and the upper end of the positioning assembly slides and abuts against the annular slide groove. When the positioning assembly slides to the position of the positioning hole, the positioning of the cart table is achieved, which facilitates the rotation positioning and rapid reset of the cart table, improves the use effect, saves the user's time, and has a novel and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a planar mechanical rotation angle limiting device of the present utility model.

[0017] Figure 2 This is a structural exploded view of a planar mechanical rotation angle limiting device of the present utility model.

[0018] Figure 3 This is a schematic structural diagram of the planar fixing member of the present invention.

[0019] exist Figures 1 to 3 Reference numerals in the figures include:

[0020] 1. Base plate; 2. Plane fixing part; 3. Rotating shaft; 4. Support sleeve; 5. Annular slide; 6. Positioning hole; 7. First fixing hole; 8. Second fixing hole; 9. Nylon bushing; 10. Spring; 11. Positioning bead; 12. Positioning groove; 13. Nylon gasket; 14. Perforation; 15. Limiting plate; 16. Rotating groove; 17. Positioning groove; 18. Limiting column; 19. Limiting groove; 20. Positioning assembly. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0022] Example 1

[0023] A planar mechanical rotation angle limiting device, such as Figures 1 to 3 As shown, it includes a base plate 1, a planar fixing part 2, a rotating shaft 3 and a supporting sleeve 4, the supporting sleeve 4 is arranged on the base plate 1, the rotating shaft 3 is rotatably arranged in the supporting sleeve 4, and the planar fixing part 2 is rotatably sleeved with the upper end of the rotating shaft 3; the upper end surface of the supporting sleeve 4 is in sliding contact with the lower end surface of the planar fixing part 2, and the upper end surface of the supporting sleeve 4 is provided with a plurality of positioning components 20 at equal intervals, and the lower end surface of the planar fixing part 2 is provided with an annular groove 5, and a plurality of positioning holes 6 are provided at equal intervals in the annular groove 5, and the positioning components 20 are arranged corresponding to the positioning holes 6; the base plate 1 is penetrated by a plurality of first fixing holes 7, and the planar fixing part 2 is penetrated by a plurality of second fixing holes 8. Specifically, when the present invention is used, the first fixing hole 7 of the base plate 1 cooperates with the external bolts to fix the base plate 1 to the fixed sheet metal of the cart, and the second fixing hole 8 of the planar fixing part 2 is fixed to the cart table through the external bolts, and then the table is pushed so that the upper end of the positioning component 20 falls into the positioning hole 6 to achieve the positioning effect; wherein, with the cooperation of the rotating shaft 3 and the supporting sleeve 4, a mutual rotation effect is achieved, thereby enabling the cart table to rotate relative to the supporting sleeve 4, and the upper end of the positioning component 20 slides and abuts against the annular slide groove 5. When the positioning component 20 slides to the position of the positioning hole 6, the positioning of the cart table is achieved, which facilitates the rotation positioning and rapid reset of the cart table, improves the use effect, saves the user's time, and has a novel and compact structure.

[0024] In the embodiment of the present application, a nylon sleeve 9 is provided between the support sleeve 4 and the rotating shaft 3. Specifically, under the above arrangement, the friction between the support sleeve 4 and the rotating shaft 3 can be reduced, thereby improving the service life.

[0025] In the embodiment of the present application, the positioning assembly 20 includes a spring 10 and a positioning bead 11. The upper end surface of the support sleeve 4 is provided with a plurality of positioning grooves 12 at equal intervals. One end of the spring 10 is connected to the bottom wall of the positioning groove 12, and the other end of the spring 10 is connected to the positioning bead 11. The upper end of the positioning bead 11 protrudes out of the positioning groove 12 and then slides into contact with the annular groove 5. Specifically, under the above-mentioned configuration, under the elasticity of the spring 10, when the planar fixing member 2 and the base plate 1 are rotated, when the positioning assembly 20 is rotated to the position of the positioning hole 6, the spring 10 pushes the positioning bead 11 to fall into the positioning hole 6, thereby positioning the planar fixing member 2 and then positioning the cart table.

[0026] In this embodiment, a nylon washer 13 is further provided on the upper end surface of the support sleeve 4. The nylon washer 13 is provided with a plurality of perforations 14 at equal intervals, corresponding to the positioning assembly 20. Specifically, the nylon washer 13 reduces friction between the support sleeve 4 and the planar fixing member 2, providing a certain damping effect and improving service life. The perforations 14 facilitate the positioning beads 11 to pass through the perforations 14 and enter the annular chute 5 for sliding engagement therewith.

[0027] In the embodiment of the present application, a limit plate 15 is provided at the upper end of the rotating shaft 3, and a rotation groove 16 is provided in the middle of the planar fixing member 2. The rotating shaft 3 is rotatably disposed in the rotation groove 16. A positioning groove 17 is also provided at the upper end of the planar fixing member 2. The limit plate 15 is received in the positioning groove 17, and the positioning groove 17 is communicated with the rotation groove 16. Specifically, under the above arrangement, the planar fixing member 2 can be limited to prevent the planar fixing member 2 from being separated from the rotating shaft 3.

[0028] In the embodiment of the present application, a limiting post 18 is provided on one side of the rotation axis 3, and the planar fixing member 2 is provided with a limiting groove 19 that slides with the limiting post 18. The limiting post 18 is provided on one side of the lower end surface of the limiting plate 15, and the limiting groove 19 is connected to the positioning groove 17. Specifically, under the above arrangement, the limiting post 18 cooperates with the limiting groove 19 to limit the rotation.

[0029] In the embodiment of the present application, the support sleeve 4 is detachably connected to the base plate 1. Specifically, under the above arrangement, the support sleeve 4 and the base plate 1 can be assembled and disassembled by screws, which facilitates the replacement of parts.

[0030] Example 2

[0031] The second embodiment of the present application differs from the first embodiment in that the support sleeve 4 is integrally formed with the base plate 1. Specifically, this arrangement is conducive to improving the connection strength and rigidity between the support sleeve 4 and the base plate 1, thereby improving the service life.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A planar mechanical rotation angle limiting device, characterized by: The invention comprises a base plate, a planar fixing part, a rotating shaft and a supporting sleeve, wherein the supporting sleeve is arranged on the base plate, the rotating shaft is rotatably arranged in the supporting sleeve, and the upper end of the rotating shaft is rotatably sleeved on the planar fixing part; the upper end surface of the supporting sleeve is in sliding contact with the lower end surface of the planar fixing part, and the upper end surface of the supporting sleeve is provided with a plurality of positioning components at equal intervals, the lower end surface of the planar fixing part is provided with an annular groove, and a plurality of positioning holes are provided at equal intervals in the annular groove, and the positioning components are arranged corresponding to the positioning holes; a plurality of first fixing holes are provided through the base plate, and a plurality of second fixing holes are provided through the planar fixing part.

2. A planar mechanical rotation angle limiting device according to claim 1, characterized in that: A nylon sleeve is provided between the supporting sleeve and the rotating shaft.

3. The planar mechanical rotation angle limiting device according to claim 1, characterized in that: The positioning assembly includes a spring and a positioning bead. The upper end surface of the support sleeve is provided with a plurality of positioning grooves at equal intervals. One end of the spring is connected to the bottom wall in the positioning groove, and the other end of the spring is connected to the positioning bead. The upper end of the positioning bead protrudes out of the positioning groove and slides into contact with the annular groove.

4. The planar mechanical rotation angle limiting device according to claim 1, characterized in that: The upper end surface of the supporting sleeve is also provided with a nylon gasket.

5. The planar mechanical rotation angle limiting device according to claim 4, characterized in that: The nylon gasket and other spacer rings are provided with a plurality of through holes, and the through holes are arranged corresponding to the positioning components.

6. The planar mechanical rotation angle limiting device according to claim 1, characterized in that: A limiting plate is provided at the upper end of the rotating shaft, a rotating groove is provided at the middle of the planar fixing member, the rotating shaft is rotatably arranged in the rotating groove, a positioning groove is also provided at the upper end of the planar fixing member, the limiting plate is accommodated in the positioning groove, and the positioning groove is connected to the rotating groove.

7. The planar mechanical rotation angle limiting device according to claim 6, characterized in that: A limiting column is provided on one side of the rotating shaft, and the planar fixing member is provided with a limiting groove that slides with the limiting column; the limiting column is provided on one side of the lower end surface of the limiting plate, and the limiting groove is connected to the positioning groove.

8. The planar mechanical rotation angle limiting device according to claim 1, characterized in that: The supporting sleeve is detachably connected to the base plate.

9. The planar mechanical rotation angle limiting device according to claim 1, characterized in that: The supporting sleeve is integrally formed with the base plate.

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