Public management teaching information display device

Abstract

The utility model discloses a public management teaching information display device, which relates to the technical field of public management and comprises a base, a protective cylinder fixedly connected to the top of the base, a display board arranged on the top of the protective cylinder, an adjusting unit arranged on the top of the base and a locking unit arranged on the outer surface of the protective cylinder. The adjusting unit comprises a rotating shaft rotationally connected to the center of the top of the base, a ball screw fixedly connected to the top of the rotating shaft, and a bearing seat movably arranged at the top of the ball screw and used for bearing the display board; the locking unit comprises a locking rod movably arranged on the outer surface of the protection barrel and a locking groove formed in the outer surface of the protection barrel and used for containing the locking rod. According to the public management teaching information display device, the hand-cranking handle is attracted through the permanent magnet, and the fixing and locking rod is inserted into the fixing and locking groove, so that the hand-cranking handle is locked, the position of the display board is locked, and the stability of the display board during display is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of public administration, in particular to a public administration teaching information display device. Background Art

[0002] Public administration can be regarded as the same concept as administrative management, government management, public administration, and administration, but there are some differences in some places. It is a discipline group system that uses multidisciplinary theories and methods such as management, political science, and economics to study the management activities and laws of public organizations, especially government organizations. Public administration has become a large discipline that integrates multiple disciplines such as public affairs management. Among them, information display devices are important tools for teaching public administration, mainly for displaying teaching information.

[0003] Publication (announcement) number: CN215895922U discloses a public administration teaching information display device, including a mobile base and a lifting assembly. A mounting rod is installed on the upper end of the mobile base through the lifting assembly. A limiting assembly is arranged inside the mounting rod to facilitate limiting the connecting sleeve. A connecting block is fixedly installed at one end of the connecting sleeve, and a display board is fixedly installed at one end of the two connecting blocks.

[0004] Although the above solution can realize the lifting of the display device, it has no limiting structure. After the device is lifted, it cannot be fixed, resulting in the display board easily sliding down during the display process and poor stability of the device. Utility Model Content

[0005] The main purpose of the utility model is to provide a public administration teaching information display device, which solves the problem that when the device is lifted and lowered, it cannot be fixed, resulting in the display board easily sliding down during the display process and the device having poor stability, by setting a locking unit.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A public administration teaching information display device comprises a base, a protective tube fixedly connected to the top of the base, and a display board arranged on the top of the protective tube, and also comprises an adjustment unit arranged on the top of the base, and a locking unit arranged on the outer surface of the protective tube;

[0008] The adjustment unit includes a rotating shaft rotatably connected to the center of the top of the base, a ball screw fixedly connected to the top of the rotating shaft, and a bearing seat movably arranged on the top of the ball screw for bearing the display board;

[0009] The locking unit includes a locking rod movably arranged on the outer surface of the protective tube, and a locking groove opened on the outer surface of the protective tube for accommodating the locking rod.

[0010] Preferably, the adjustment unit further comprises a crank handle penetrating through the side wall of the protective tube and rotatably connected to the side wall of the protective tube, a first bevel gear fixedly connected to the outer side wall of the crank handle, and a second bevel gear fixedly connected to the outer side wall of the rotating shaft.

[0011] Preferably, the adjustment unit further comprises a bearing movably arranged on the outer surface of the ball screw;

[0012] The bottom of the bearing seat is fixedly connected to the top of the bearing, and the top of the bearing seat is fixedly connected to the bottom of the display board.

[0013] Preferably, the adjustment unit further comprises a mounting hole opened at the top of the bearing, and a roller rotatably connected to the inner side wall of the mounting hole;

[0014] There are two groups of integral structures composed of the rollers and the mounting holes, which are symmetrically arranged about the central axis of the ball screw. The outer surface of the roller protrudes out of the mounting hole and abuts against the inner wall of the protective tube.

[0015] Preferably, the locking unit further comprises a slide groove provided on the outer side wall of the hand crank handle and a limit groove provided on the inner side wall of the slide groove;

[0016] The locking rod slides inside the sliding groove and the length of the locking rod is greater than the depth of the sliding groove.

[0017] Preferably, the locking unit further comprises a connecting spring fixedly connected to the inner side wall of the limiting groove, and a limiting ring fixedly connected to the end surface of the connecting spring;

[0018] The outer ring side wall of the locking rod is fixedly connected to the inner ring side wall of the limiting ring.

[0019] Preferably, the locking unit further comprises a permanent magnet fixedly connected to the end face of the locking rod, and the end face of the hand crank handle close to the permanent magnet is made of ferromagnetic material.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. In the utility model, by turning the hand crank, the first bevel gear is driven to rotate, and then the second bevel gear meshing therewith is driven to rotate, thereby driving the rotating shaft and the ball screw to rotate. At this time, the bearing will make a linear motion in the vertical direction under the action of the ball screw, so as to adjust the height position of the display board. When the bearing is making a linear motion, the outer surface of the roller will roll on the inner wall of the protective tube, thereby improving the bearing movement stability while reducing the wear on the inner wall of the protective tube and increasing the service life of the device.

[0022] 2. In the utility model, the hand crank is rotated slightly so that the slide groove is opposite to the locking groove, and then the permanent magnet is pushed until one end of the locking rod extends to the outer surface of the hand crank and is inserted into the locking groove. At this time, the permanent magnet will be adsorbed to the outer surface of the hand crank and the connecting spring will be in a compressed state, thereby achieving height locking of the display board and ensuring its stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the internal structure of the longitudinal section of the utility model;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure between the first bevel gear and the second bevel gear of the utility model;

[0027] Figure 5 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle;

[0028] Figure 6 For this utility model Figure 2 A magnified schematic diagram of structure B in the middle.

[0029] In the figure:

[0030] 1. Base; 2. Protective tube; 3. Display board; 401. Hand crank; 402. First bevel gear; 403. Rotating shaft; 404. Second bevel gear; 405. Ball screw; 406. Bearing; 407. Bearing seat; 408. Mounting hole; 409. Roller; 501. Connecting spring; 502. Limiting ring; 503. Locking rod; 504. Permanent magnet; 505. Locking groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] Embodiment 1: Figure 1-6 As shown, a public administration teaching information display device includes a base 1, a protective tube 2 fixedly connected to the top of the base 1, and a display board 3 arranged on the top of the protective tube 2, and also includes an adjustment unit arranged on the top of the base 1, and a locking unit arranged on the outer surface of the protective tube 2;

[0033] The adjustment unit includes a rotating shaft 403 rotatably connected to the top center of the base 1, a ball screw 405 fixedly connected to the top of the rotating shaft 403, and a bearing seat 407 movably arranged on the top of the ball screw 405 for bearing the display board 3;

[0034] The locking unit includes a locking rod 503 movably disposed on the outer surface of the protective tube 2 , and a locking groove 505 opened on the outer surface of the protective tube 2 for accommodating the locking rod 503 .

[0035] The adjustment unit also includes a hand crank 401 that passes through the side wall of the protective tube 2 and is rotatably connected to the side wall of the protective tube 2, a first bevel gear 402 fixedly connected to the outer wall of the hand crank 401, and a second bevel gear 404 fixedly connected to the outer wall of the rotating shaft 403, wherein the first bevel gear 402 and the second bevel gear 404 are both located inside the protective tube 2, and the two are meshingly arranged, so that by rotating the hand crank 401, the rotating shaft 403 is driven to rotate, and the protection of the two bevel gears is improved through the protective tube 2.

[0036] The adjustment unit further includes a bearing 406 movably disposed on the outer surface of the ball screw 405;

[0037] The bottom of the support seat 407 is fixedly connected to the top of the bearing 406, and the top of the support seat 407 is fixedly connected to the bottom of the display board 3. The ball screw 405 converts the rotary motion of the rotating shaft 403 into the linear motion of the bearing 406, thereby driving the display board 3 to move up and down linearly, thereby adjusting the height of the display board 3.

[0038] The adjustment unit further includes a mounting hole 408 opened at the top of the bearing 406, and a roller 409 rotatably connected to the inner side wall of the mounting hole 408;

[0039] There are two groups of integral structures consisting of rollers 409 and mounting holes 408, which are symmetrically arranged about the central axis of the ball screw 405. The outer surface of the roller 409 protrudes from the mounting hole 408 and abuts against the inner wall of the protective tube 2. When the bearing 406 moves up and down, the roller 409 will roll on the inner wall of the protective tube 2, thereby improving the movement stability of the bearing 406 while reducing the wear on the inner wall of the protective tube 2 and increasing the service life of the device.

[0040] By turning the hand crank 401, the first bevel gear 402 is driven to rotate, and then the second bevel gear 404 meshing therewith is driven to rotate, thereby driving the rotating shaft 403 and the ball screw 405 to rotate. At this time, the bearing 406 will make a linear motion in the vertical direction under the action of the ball screw 405, so as to adjust the height position of the display board 3. When the bearing 406 is making a linear motion, the outer surface of the roller 409 will roll on the inner wall of the protective tube 2, thereby improving the movement stability of the bearing 406 while reducing the wear on the inner wall of the protective tube 2, thereby increasing the service life of the device.

[0041] Embodiment 2: Figure 1-6 As shown, a public administration teaching information display device includes a base 1, a protective tube 2 fixedly connected to the top of the base 1, and a display board 3 arranged on the top of the protective tube 2, and also includes an adjustment unit arranged on the top of the base 1, and a locking unit arranged on the outer surface of the protective tube 2;

[0042] The adjustment unit includes a rotating shaft 403 rotatably connected to the top center of the base 1, a ball screw 405 fixedly connected to the top of the rotating shaft 403, and a bearing seat 407 movably arranged on the top of the ball screw 405 for bearing the display board 3;

[0043] The locking unit includes a locking rod 503 movably disposed on the outer surface of the protective tube 2 , and a locking groove 505 opened on the outer surface of the protective tube 2 for accommodating the locking rod 503 .

[0044] The locking unit further includes a slide groove provided on the outer side wall of the hand crank handle 401 and a limit groove provided on the inner side wall of the slide groove;

[0045] The locking rod 503 slides inside the slide groove and the length of the locking rod 503 is greater than the depth of the slide groove, wherein the outer diameter of the locking rod 503 is equal to the inner diameter of the slide groove.

[0046] The locking unit further includes a connecting spring 501 fixedly connected to the inner side wall of the limiting groove, and a limiting ring 502 fixedly connected to the end surface of the connecting spring 501;

[0047] The outer ring side wall of the locking rod 503 is fixedly connected to the inner ring side wall of the limiting ring 502, wherein the outer diameter of the limiting ring 502 is equal to the inner diameter of the limiting groove.

[0048] The locking unit also includes a permanent magnet 504 fixedly connected to the end face of the locking rod 503, and the end face of the crank handle 401 close to the permanent magnet 504 is made of ferromagnetic material, wherein the magnetic force between the permanent magnet 504 and the end face of the crank handle 401 is greater than the elastic force of the connecting spring 501, and the connecting spring 501 is a compression spring.

[0049] When the position adjustment is roughly completed, the hand crank 401 is slightly rotated so that the slide groove is opposite to the locking groove 505, and then the permanent magnet 504 is pushed until one end of the locking rod 503 extends to the outer surface of the hand crank 401 and is inserted into the locking groove 505. At this time, the permanent magnet 504 will be adsorbed to the outer surface of the hand crank 401, and the connecting spring 501 is in a compressed state, thereby realizing the height locking of the display board 3;

[0050] When the height needs to be adjusted, first pull the permanent magnet 504 to make it out of the adsorption range of the hand crank 401, and then release the permanent magnet 504. At this time, the connecting spring 501 will return to its original state, and then one end of the locking rod 503 will be completely retracted into the slide groove to prevent the locking rod 503 from interfering with its movement when the hand crank 401 is rotated.

Claims

1. A public administration teaching information display device, comprising a base (1), a protective tube (2) fixedly connected to the top of the base (1), and a display board (3) arranged on the top of the protective tube (2), characterized in that: It also includes an adjustment unit arranged on the top of the base (1), and a locking unit arranged on the outer surface of the protective tube (2); The adjustment unit comprises a rotating shaft (403) rotatably connected to the top center of the base (1), a ball screw (405) fixedly connected to the top of the rotating shaft (403), and a bearing seat (407) movably arranged on the top of the ball screw (405) for bearing the display board (3); The locking unit comprises a locking rod (503) movably arranged on the outer surface of the protective tube (2), and a locking groove (505) provided on the outer surface of the protective tube (2) for accommodating the locking rod (503).

2. The public administration teaching information display device according to claim 1, characterized in that: The adjustment unit further comprises a hand crank (401) penetrating the side wall of the protective tube (2) and rotatably connected to the side wall of the protective tube (2), a first bevel gear (402) fixedly connected to the outer side wall of the hand crank (401), and a second bevel gear (404) fixedly connected to the outer side wall of the rotating shaft (403).

3. A public administration teaching information display device according to claim 2, characterized in that: The adjustment unit further comprises a bearing (406) movably arranged on the outer surface of the ball screw (405); The bottom of the bearing seat (407) is fixedly connected to the top of the bearing (406), and the top of the bearing seat (407) is fixedly connected to the bottom of the display board (3).

4. A public administration teaching information display device according to claim 3, characterized in that: The adjustment unit further comprises a mounting hole (408) formed on the top of the bearing (406), and a roller (409) rotatably connected to the inner wall of the mounting hole (408); The roller (409) and the mounting hole (408) form an integral structure in two groups, and are symmetrically arranged about the central axis of the ball screw (405). The outer surface of the roller (409) protrudes out of the mounting hole (408) and abuts against the inner wall of the protective tube (2).

5. The public administration teaching information display device according to claim 4, characterized in that: The locking unit further comprises a slide groove provided on the outer side wall of the hand crank handle (401) and a limit groove provided on the inner side wall of the slide groove; The locking rod (503) slides inside the slide groove and the length of the locking rod (503) is greater than the depth of the slide groove.

6. A public administration teaching information display device according to claim 5, characterized in that: The locking unit further comprises a connecting spring (501) fixedly connected to the inner side wall of the limiting groove, and a limiting ring (502) fixedly connected to the end surface of the connecting spring (501); The outer ring side wall of the locking rod (503) is fixedly connected to the inner ring side wall of the limiting ring (502).

7. The public administration teaching information display device according to claim 6, characterized in that: The locking unit further comprises a permanent magnet (504) fixedly connected to the end surface of the locking rod (503), and the end surface of the crank handle (401) close to the permanent magnet (504) is made of ferromagnetic material.

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