CN214803574U - Blackboard fixing device for hollow wall - Google Patents

Abstract

The utility model discloses a blackboard fixing device used for a hollow wall body, which comprises a supporting plate, the utility model discloses a mutual cooperation between each part of turning handle, solid fixed cylinder, connecting rod, extrusion spring, connecting block, drill bit, spheroid and reset spring has reached the effect that conveniently installs fixing device on hollow wall, and easy operation has improved staff's work efficiency to a certain extent.

Description

Blackboard fixing device for hollow wall

Technical Field

The utility model relates to a teaching tool technical field especially relates to a blackboard fixing device that can be used to hollow wall body.

Background

The blackboard is essential teaching tool in the teaching, along with the continuous progress of science and technology, conspiracy body teaching also slowly walks into each school, but the blackboard all can be equipped with in every classroom of school, makes things convenient for mr to carry out the blackboard writing on the blackboard, can be more audio-visual to impart knowledge to students.

At present, the blackboard fixing device used in the market can not be used for installing and disassembling blackboards with different sizes, and is inconvenient to install the fixing device on the hollow wall body, so that the blackboard fixing device capable of being used for the hollow wall body is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a blackboard fixing device which can be used for a hollow wall.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

a blackboard fixing device capable of being used for a hollow wall comprises a supporting plate, wherein fixing boxes are fixedly connected to the left side and the right side of the front side of the supporting plate close to the center, rotating rods are movably connected to the inner walls of the front side and the rear side of the fixing boxes close to the center, worm gears are fixedly connected to the two rotating rods close to the front ends, rotating plates are fixedly connected to the two rotating rods close to the center, a first arc plate and a second arc plate are movably connected to the left side and the right side of the rotating plates close to the center of the rear side respectively, fixing seats are movably connected to one sides of the first arc plate and the second arc plate far away from the center of an inner cavity of the fixing box, clamping plates are fixedly connected to one sides of the two fixing seats close to one side of the center of the inner cavity of the supporting plate, grooves are formed in the adjacent sides of the two clamping plates, and limiting springs are arranged at the positions of the two inner cavities of the fixing boxes close to the rear sides, the bottom of each of the two fixed box inner cavities is movably connected with a worm near the center, the two worms are meshed with the two worm wheels, the top of each of the two fixed box tops is provided with a first opening near the center, the top ends of the two worms penetrate through the adjacent first opening inner cavities and are fixedly connected with handles, through holes are formed in the supporting plate near four corners, the inner part of each of the through holes is fixedly connected with a fixed cylinder, the inner part of each of the fixed cylinders is movably connected with a connecting rod near the front end, the front ends of the connecting rods are fixedly connected with rotating handles, the rear ends of the connecting rods are fixedly connected with extrusion springs near the center, the rear ends of the extrusion springs are fixedly connected with connecting blocks, the rear ends of the connecting blocks are fixedly connected with drill bits near the center, and the left and right sides of the fixed cylinders are provided with second openings near the rear ends, two both sides are close to equal fixedly connected with reset spring in center department around the second opening inner chamber, two the common fixedly connected with spheroid of the adjacent one end of reset spring.

Furthermore, the two fixed boxes are arranged in a bilateral symmetry mode by taking the center of the inner cavity of the supporting plate as a symmetry axis, the cross sections of the two fixed boxes are arranged in a U shape, and the openings of the U-shaped structures of the two fixed boxes face to the corresponding side.

Furthermore, two the spacing spring uses the inner chamber center of fixed case to be symmetry setting from top to bottom as the symmetry axis, and two both ends are close to rear side department with the inner wall that fixed case kept away from backup pad inner chamber center one side respectively and the grip block is close to fixed case inner chamber center one side and is close to rear side department fixed connection.

Furthermore, two the equal swing joint of the rear side center department of the commentaries on classics board left and right sides has a connecting axle, two connecting axle rear end respectively with adjacent first arc and second arc be close to the center swing joint of one side front side center department at fixed box inner chamber center.

Furthermore, two fixing seats far away from one side of the center of the inner cavity of the supporting plate are fixedly connected with the positions, close to the center, of the inner walls of the adjacent fixing boxes respectively.

Further, a plurality of the connecting rod outer wall all sets to the screw thread form near rear end department, a plurality of the fixed cylinder inner wall all is equipped with near the center department and is close to rear end department assorted internal thread with a plurality of connecting rod outer wall.

Further, a plurality of the drill bit is close to rear end department and all sets to the heliciform, a plurality of the third opening has all been seted up to the fixed cylinder rear end department of being close to the center, and a plurality of the drill bit rear end runs through adjacent third opening inner chamber respectively.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model has the advantages that the fixing device can achieve the effect of mounting and dismounting the blackboards with different sizes by mutually matching and using the clamping plate, the first arc-shaped plate, the limiting spring, the fixing seat, the second arc-shaped plate, the worm wheel, the rotating plate, the rotating rod, the handle and the worm wheel, and the application range of the device is improved to a certain extent;

2. the utility model discloses a mutually supporting between each part of turning handle, solid fixed cylinder, connecting rod, extrusion spring, connecting block, drill bit, spheroid and reset spring uses, has reached the convenience and has installed the effect on hollow wall body with fixing device, and easy operation, has improved staff's work efficiency to a certain extent.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic front view of the present embodiment;

FIG. 2 is a schematic top view of a portion of the present embodiment;

FIG. 3 is an enlarged schematic view of the structure at the point A in the present embodiment;

fig. 4 is an enlarged schematic structural diagram of the embodiment at B.

In the figure: 1. a support plate; 2. a clamping plate; 3. a fixed box; 4. a first arc-shaped plate; 5. a handle is rotated; 6. a limiting spring; 7. a fixed seat; 8. a second arc-shaped plate; 9. a worm gear; 10. rotating the plate; 11. a rotating rod; 12. a handle; 13. a fixed cylinder; 14. a connecting rod; 15. a compression spring; 16. connecting blocks; 17. a drill bit; 18. a worm; 19. a sphere; 20. a return spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a blackboard fixing device for a hollow wall comprises a supporting plate 1, wherein fixed boxes 3 are fixedly connected to the left and right sides of the front side of the supporting plate 1 near the center, the two fixed boxes 3 are symmetrically arranged in the left and right directions with the center of the inner cavity of the supporting plate 1 as the symmetry axis, the cross sections of the two fixed boxes 3 are arranged in a U shape, the openings of the U-shaped structures of the two fixed boxes 3 face to the corresponding side, rotating rods 11 are movably connected to the inner walls of the front and rear sides of the two fixed boxes 3 near the center, worm gears 9 are fixedly connected to the two rotating rods 11 near the front ends, rotating plates 10 are fixedly connected to the two rotating rods 11 near the center, connecting shafts are movably connected to the left and right sides of the two rotating plates 10 near the center of the rear side, the rear ends of the two connecting shafts are respectively movably connected to the front center of the adjacent first arc-shaped plate 4 and second arc-shaped plate 8 near the center of the inner cavity of the fixed boxes 3, two it has first arc 4 and second arc 8 to change board 10 left and right sides and be close to rear side center punishment do not swing joint, the equal swing joint in one side that fixed box 3 inner chamber center was kept away from to first arc 4 and second arc 8 has fixing base 7, keeps away from two of 1 inner chamber center one side of backup pad 1 fixing base 7 is close to center department fixed connection with adjacent fixed box 3 inner wall respectively, and is close to the equal fixedly connected with grip block 2 in one side that two fixing base 7 of 1 inner chamber center one side of backup pad are adjacent, and two the recess is all seted up to one side that grip block 2 is adjacent, two the rear side department is close to all being equipped with spacing spring 6, two about 3 inner chambers of fixed box are the symmetry axis with fixed box 3's inner chamber center and are the symmetry setting from top to bottom, and two spacing spring 6 left and right sides both ends are close to rear side department and grip block 2 is close to fixed box 3 with fixed box 3 inner chamber center one side's inner wall respectively with fixed box 3 inner chamber center one side One side of the center of the inner cavity is fixedly connected with the position close to the rear side, the bottom of the inner cavity of the two fixed boxes 3 is movably connected with a worm 18 close to the center, the two worms 18 are meshed with the two worm wheels 9, the top of the two fixed boxes 3 is provided with a first opening close to the center, the top ends of the two worms 18 penetrate through the adjacent first opening inner cavity and are fixedly connected with a handle 12, through holes are formed in the inner part of the support plate 1 close to the four corners, the inner cavities of the through holes are fixedly connected with fixed cylinders 13, the inner cavities of the fixed cylinders 13 are movably connected with connecting rods 14 close to the front ends, the outer walls of the connecting rods 14 close to the rear ends are arranged in a thread shape, the inner walls of the fixed cylinders 13 close to the center are provided with inner threads matched with the outer walls of the connecting rods 14 close to the rear ends, and the front ends of the connecting rods 14 are fixedly connected with rotating handles 5, a plurality of 14 rear ends of connecting rod are close to the equal fixedly connected with extrusion spring 15 of center department, a plurality of 15 rear ends of extrusion spring all fixedly connected with connecting block 16, a plurality of 16 rear sides of connecting block are close to the equal fixedly connected with drill bit 17 of center department, a plurality of the drill bit 17 is close to rear end department and all sets the heliciform, a plurality of 13 rear ends of solid fixed cylinder are close to center department and all have seted up the third opening, and a plurality of 17 rear ends of drill bit run through adjacent third opening inner chamber, a plurality of the solid fixed cylinder 13 left and right sides is close to rear end department and all has seted up the second opening, two both sides are close to the equal fixedly connected with reset spring 20 of center department, two around the second opening inner chamber the common fixedly connected with spheroid 19 of the adjacent one end of reset spring 20.

The working principle is as follows: when a worker needs to use the fixing device to fix the blackboard on the hollow wall body, firstly, the worker holds the rotating handle 5 in sequence by hands and rotates forwards, the rotating handle 5 rotates forwards to drive the connecting rod 14 to rotate, the connecting rod 14 is meshed with the position, close to the center, of the inner wall of the fixed cylinder 13 when rotating, so that the connecting rod 14 is driven to start moving towards the inner cavity of the fixed cylinder 13, when the connecting rod 14 starts moving towards the inner cavity of the fixed cylinder 13, the extrusion spring 15 is driven to start rotating and contract inwards, the connecting block 16 is driven to rotate and move backwards, so that the drill bit 17 is driven to move out of the inner cavity of the third opening, the drill bit 17 is driven to rotate when rotating the connecting block 16, so that the spiral part of the drill bit 17 punches a hole on the surface of the hollow wall body, the fixed cylinder 13 is inserted into the inner cavity punched by the drill bit 17 close to the rear end, and the connecting block 16 makes the outer wall of the connecting block 16 contact with the two spheres 19 in the process of gradually moving backwards, thereby extruding the two spheres 19 out of the adjacent second opening inner cavities and clamping the spheres into the hole inner cavity drilled by the drill 17, thereby fixing the fixing device on the surface of the hollow wall, achieving the effect of conveniently installing the fixing device on the hollow wall, and having simple operation and improving the working efficiency of workers to a certain extent, when the fixing device is fixed on the hollow wall, the workers place the outer wall of the blackboard on the inner cavity of the grooves of the two clamping plates 2, then the workers hold the two handles 12 by hands simultaneously and rotate forwards or reversely, when the two handles 12 rotate forwards or reversely, the two worms 18 are driven to rotate forwards or reversely, when the two worms 18 rotate forwards or reversely, the two worm wheels 9 are driven to rotate forwards or reversely, when the two worm wheels 9 rotate forwards or reversely, the two rotating rods 11 are driven to rotate forwards or reversely, two bull sticks 11 forward or during the antiport, drive two and change board 10 forward or antiport, during two are changeed board 10 forward or antiport, make two first arcs 4 and second arc 8 begin to expand or fold, thereby promote two grip blocks 2 and begin to remove or keep away from the removal mutually towards corresponding one side, thereby make two grip blocks 2 closely laminate or separate with the not unidimensional blackboard outer wall, make fixing device reach the effect that can install and dismantle the not unidimensional blackboard, the application scope of device has been improved to a certain extent, it is above that the utility model discloses a whole course of work.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (7)

1. The utility model provides a blackboard fixing device that can be used to hollow wall, includes backup pad (1), its characterized in that: the fixing box is characterized in that the positions of the left side and the right side of the front side of the supporting plate (1) close to the center are fixedly connected with fixed boxes (3), the positions of the inner walls of the front side and the rear side of the two fixed boxes (3) close to the center are movably connected with rotating rods (11), the positions of the two rotating rods (11) close to the front end are fixedly connected with worm gears (9), the positions of the two rotating rods (11) close to the center are fixedly connected with rotating plates (10), the positions of the left side and the right side of the two rotating plates (10) close to the center of the rear side are movably connected with a first arc-shaped plate (4) and a second arc-shaped plate (8), the sides of the first arc-shaped plate (4) and the second arc-shaped plate (8), which are far away from the center of the inner cavity of the fixed boxes (3), are movably connected with fixed seats (7), the adjacent sides of the two fixed seats (7) close to one side of the center of the inner cavity of the supporting plate (1) are fixedly connected with clamping plates (2), and the adjacent sides of the two clamping plates (2) are provided with grooves, the upper and lower rear side parts of the inner cavities of the two fixed boxes (3) are respectively provided with a limiting spring (6), the bottom parts of the inner cavities of the two fixed boxes (3) are respectively and movably connected with a worm (18) near the center, the two worms (18) are meshed with the two worm wheels (9), the top parts of the two fixed boxes (3) near the center are respectively provided with a first opening, the top ends of the two worms (18) are respectively penetrated through the adjacent first opening inner cavities and are fixedly connected with a handle (12), the inner part of the support plate (1) is respectively provided with a through hole near the four corners, the through hole inner cavities are respectively and fixedly connected with a fixed cylinder (13), the inner cavities of the fixed cylinders (13) are respectively and movably connected with a connecting rod (14) near the front end, the front ends of the connecting rods (14) are respectively and fixedly connected with a rotating handle (5), and the rear ends of the connecting rods (14) are respectively and fixedly connected with an extrusion spring (15) near the center, a plurality of equal fixedly connected with connecting block (16), a plurality of in extrusion spring (15) rear end connecting block (16) rear side is close to equal fixedly connected with drill bit (17) of center department, a plurality of the second opening has all been seted up, two to the fixed cylinder (13) left and right sides is close to rear end department both sides are close to equal fixedly connected with reset spring (20), two of center department around the second opening inner chamber the common fixedly connected with spheroid (19) of one end that reset spring (20) are adjacent.

2. The blackboard fixing device applicable to the hollow wall body as claimed in claim 1, wherein: the two fixed boxes (3) are arranged in a bilateral symmetry mode by taking the center of an inner cavity of the supporting plate (1) as a symmetry axis, the cross sections of the two fixed boxes (3) are arranged in a U shape, and the openings of the U-shaped structures of the two fixed boxes (3) face to one corresponding side.

3. The blackboard fixing device applicable to the hollow wall body as claimed in claim 1, wherein: two spacing spring (6) are symmetry setting about using the inner chamber center of fixed case (3) as the symmetry axis, and two both ends are close to rear side department and grip block (2) one side that is close to fixed case (3) inner chamber center near rear side department fixed connection with the inner wall that fixed case (3) kept away from backup pad (1) inner chamber center one side respectively about spacing spring (6).

4. The blackboard fixing device applicable to the hollow wall body as claimed in claim 1, wherein: two the equal swing joint of rear side center department is close to in the left and right sides of commentaries on classics board (10) is connected with the axle, two it is connected with the swing joint of one side front side center department near fixed box (3) inner chamber center with adjacent first arc (4) and second arc (8) respectively to connect the axle rear end.

5. The blackboard fixing device applicable to the hollow wall body as claimed in claim 1, wherein: two fixing seats (7) far away from one side of the center of the inner cavity of the supporting plate (1) are fixedly connected with the inner wall of the adjacent fixing box (3) close to the center respectively.

6. The blackboard fixing device applicable to the hollow wall body as claimed in claim 1, wherein: a plurality of connecting rod (14) outer wall is close to rear end department and all sets up to the screw thread form, a plurality of fixed cylinder (13) inner wall is close to center department and all is equipped with and is close to rear end department assorted internal thread with a plurality of connecting rod (14) outer wall.

7. The blackboard fixing device applicable to the hollow wall body as claimed in claim 1, wherein: a plurality of drill bit (17) are close to rear end department and all set to the heliciform, a plurality of fixed cylinder (13) rear end is close to center department and has all seted up the third opening, and a plurality of drill bit (17) rear end runs through adjacent third opening inner chamber respectively.

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