Textbook placing device

Abstract

The utility model provides a textbook placing device, which comprises a fixed base, a rotating seat, a rotating shaft and a rotating shaft, an adjusting knob is arranged on the left side of the rotating seat; two supporting frames are arranged on the rotating seat, a connecting plate is arranged at the tops of the two supporting frames, and the rotating seat can be firmly positioned through mutual cooperation of an adjusting knob and a left rotating shaft, clamping connection of a ratchet claw and a ratchet sleeve and the elastic effect of a first compression spring; the situation that connecting parts are loosened due to frequent adjustment of the supporting angle of the textbook is avoided, the toppling situation is prevented, the stability of the supporting structure is guaranteed, use and operation are convenient and fast, and the problem that due to frequent adjustment of the supporting angle of the textbook, the connecting parts are prone to loosening, and toppling is caused is solved.

Description

Technical Field

[0001] This utility model relates to the field of educational technology, and in particular to a textbook placement device. Background Technology

[0002] The textbook rack can hold various types of textbooks, including regular paper textbooks, hardcover books, and workbooks. Students can place their textbooks on the rack, freeing their hands to take notes or operate experimental equipment. Teachers can also easily display textbook content during lectures, guiding students to read and learn together. This approach can enhance student learning motivation and classroom interaction.

[0003] Existing textbook placement devices are prone to loosening of connecting parts due to frequent adjustments to the support angle, which can cause the textbook holder to tip over. Moreover, the adjustment structure of the bracket generally uses bolt tightening, which makes the adjustment operation cumbersome and time-consuming, affecting the convenience and efficiency of teaching. Utility Model Content

[0004] This disclosure relates to a textbook placement device, which consists of an adjustment knob and a left-side rotating shaft that engage with each other via a ratchet pawl and a ratchet sleeve. The device utilizes the elasticity of a first compression spring to firmly position the rotating seat, preventing loosening of connecting parts due to frequent adjustments of the textbook's support angle, thus preventing tipping and ensuring the stability of the support structure. The device is also convenient to use and operate.

[0005] In a first aspect, this disclosure provides a textbook placement device, specifically comprising: a fixed base, a rotating seat above the fixed base; an adjustment knob on the left side of the rotating seat; two symmetrically distributed support frames on the rotating seat; a connecting plate at the top of the two support frames, and a mounting shaft at the connection between the support frame and the connecting plate; a placement plate at the top of the connecting plate; two symmetrically distributed fixed frames at the bottom of the placement plate; a restoring spring at the top of the front end of the fixed frame; and a lower pressure plate at the top of the restoring spring, which is parallel to the placement plate.

[0006] The fixed base has two first connecting frames on the rear side of the top, and the two first connecting frames are distributed symmetrically on the left and right. The rotating seat is located between the two first connecting frames, and the left first connecting frame is provided with a ratchet sleeve.

[0007] In at least some embodiments, the rotating seat is provided with rotating shafts at both the left and right ends, and the rotating seat is rotatably connected to the first connecting frame through the rotating shafts. Four limiting sliders are provided on the outer circumferential surface of the left rotating shaft, and the four limiting sliders are distributed in a circular array. A first circular baffle is provided at the end of the left rotating shaft, and a first compression spring is fitted on the left rotating shaft.

[0008] In at least some embodiments, the adjustment knob is provided with a sliding sleeve in the middle position, and the inner circumferential surface of the sliding sleeve is provided with four limiting sliding grooves, which are distributed in a circular array. A ratchet pawl is provided on the right side of the adjustment knob.

[0009] In at least some embodiments, the adjustment knob is slidably connected to the limiting slider of the left rotating shaft via a limiting groove, and the ratchet pawl matches the ratchet sleeve, and the first compression spring is supported between the adjustment knob and the first circular baffle.

[0010] In at least some embodiments, the support frame has a connecting bolt at the bottom, and the connecting bolt passes through the rotating seat and is controlled by a locking nut. A first spline groove is provided on one side of the support frame near the top.

[0011] In at least some embodiments, the front end of the connecting plate is provided with a support plate, the bottom of the connecting plate is provided with two sets of second connecting frames, and the support frame is rotatably connected to the second connecting frame through a mounting shaft, and the second connecting frame located on the outer side is provided with a second spline groove.

[0012] In at least some embodiments, one end of the mounting shaft is provided with a pull button, the mounting shaft is provided with a splined shaft, the other end of the mounting shaft is provided with a second circular baffle, and a second compression spring is fitted on the mounting shaft.

[0013] This utility model provides a textbook placement device, which has the following beneficial effects:

[0014] In this invention, the adjusting knob and the left rotating shaft cooperate with each other, and the ratchet pawl and ratchet sleeve are engaged. The elasticity of the first compression spring is used to firmly position the rotating seat, avoiding the loosening of the connecting parts due to frequent adjustment of the textbook's support angle, preventing tipping, and ensuring the stability of the support structure.

[0015] Furthermore, during the adjustment of the textbook placement plate angle, by pulling the two knobs to the left and right respectively, the spline shaft slides out from the first and second spline grooves, which can quickly release the limiting position on the connecting plate and realize the angle adjustment of the upper placement plate. Moreover, after the placement plate is adjusted to the appropriate angle, the spline shaft can be inserted into the first and second spline grooves for positioning by the rebound action of the second compression spring, thus completing the quick fixation of the placement plate. The entire adjustment process is flexible and convenient, improving convenience and efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0018] In the attached diagram:

[0019] Figure 1 This shows a schematic diagram of the overall axial view structure of this application;

[0020] Figure 2 This diagram shows the structural features of the fixed base and rotating seat in their disassembled state according to this application.

[0021] Figure 3 This application shows Figure 2 Enlarged structural diagram of section A in the middle;

[0022] Figure 4 This paper shows a schematic diagram of the support frame, connecting plate, and mounting shaft in their disassembled state according to this application.

[0023] Figure 5 This application shows Figure 4 Enlarged structural diagram of section B.

[0024] List of reference numerals in the attached diagram:

[0025] 1. Fixed base; 101. First connecting frame; 102. Rattle sleeve; 2. Rotating seat; 201. Rotating shaft; 202. Limiting slider; 203. First circular baffle; 204. First compression spring; 3. Adjusting knob; 301. Limiting groove; 302. Rattle pawl; 4. Support frame; 401. Connecting bolt; 402. First spline groove; 5. Connecting plate; 501. Support plate; 502. Second connecting frame; 503. Second spline groove; 6. Mounting shaft; 601. Pull button; 602. Spline shaft; 603. Second circular baffle; 604. Second compression spring; 7. Placement plate; 8. Fixed frame; 9. Return spring; 10. Lower pressure plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1: Please refer to Figures 1 to 5 :

[0028] This utility model proposes a textbook placement device, comprising: a fixed base 1, a rotating seat 2 above the fixed base 1; an adjustment knob 3 on the left side of the rotating seat 2; two support frames 4 on the rotating seat 2, which are symmetrically distributed; a connecting plate 5 on the top of the two support frames 4, and a mounting shaft 6 at the connection between the support frame 4 and the connecting plate 5; a placement plate 7 on the top of the connecting plate 5; two fixing frames 8 at the bottom of the placement plate 7, which are symmetrically distributed; a restoring spring 9 at the top of the front end of the fixing frame 8; and a lower pressure plate 10 on the top of the restoring spring 9, which is parallel to the placement plate 7.

[0029] The fixed base 1 has two first connecting frames 101 on the rear side of the top, and the two first connecting frames 101 are distributed symmetrically on the left and right. The rotating seat 2 is located between the two first connecting frames 101, and the left first connecting frame 101 is provided with a ratchet sleeve 102.

[0030] In this embodiment of the disclosure, such as Figure 2 and Figure 3 As shown, the rotating seat 2 has a rotating shaft 201 at both ends, and the rotating seat 2 is rotatably connected to the first connecting frame 101 through the rotating shaft 201. There are four limiting sliders 202 on the outer circumference of the left rotating shaft 201, and the four limiting sliders 202 are distributed in a ring array. The end of the left rotating shaft 201 is provided with a first circular baffle 203, and a first compression spring 204 is fitted on the left rotating shaft 201.

[0031] The adjustment knob 3 has a sliding sleeve in the middle, and the inner circumferential surface of the sliding sleeve has four limiting grooves 301, which are arranged in a ring array. The adjustment knob 3 has a ratchet pawl 302 on the right side.

[0032] The adjustment knob 3 is slidably connected to the limiting slider 202 of the left rotating shaft 201 through the limiting slide groove 301, and the ratchet pawl 302 matches the ratchet sleeve 102. The first compression spring 204 is supported between the adjustment knob 3 and the first circular baffle 203. In this utility model, the adjustment knob 3 and the left rotating shaft 201 cooperate with each other, and the ratchet pawl 302 is engaged with the ratchet sleeve 102. With the elastic effect of the first compression spring 204, the rotating seat 2 can be firmly positioned, avoiding the loosening of the connecting parts due to frequent adjustment of the textbook's support angle.

[0033] Example 2, based on Example 1, such as Figure 4 and Figure 5 As shown, the bottom of the support frame 4 is provided with a connecting bolt 401, which passes through the rotating seat 2 and is controlled by a locking nut. The support frame 4 is provided with a first spline groove 402 on one side near the top.

[0034] The front end of the connecting plate 5 is provided with a support plate 501, and the bottom of the connecting plate 5 is provided with two sets of second connecting frames 502. The support frame 4 is rotatably connected to the second connecting frame 502 through the mounting shaft 6, and the second connecting frame 502 located on the outer side is provided with a second spline groove 503.

[0035] One end of the mounting shaft 6 is provided with a pull button 601, the mounting shaft 6 is provided with a spline shaft 602, the other end of the mounting shaft 6 is provided with a second circular baffle 603, and a second compression spring 604 is fitted on the mounting shaft 6.

[0036] When the support frame 4 and the connecting plate 5 are fixed, the spline shaft 602 passes through the first spline groove 402 and the second spline groove 503 simultaneously, and the second compression spring 604 is supported between the second circular baffle 603 and the second connecting frame 502. During the adjustment of the angle of the textbook placement plate 7, by pulling the two pull buttons 601 to the left and right sides respectively, the spline shaft 602 slides out from the first spline groove 402 and the second spline groove 503, which can quickly release the restriction on the connecting plate 5 and realize the angle adjustment of the upper placement plate 7. Moreover, after the placement plate 7 is adjusted to a suitable angle, the spline shaft 602 can be inserted into the first spline groove 402 and the second spline groove 503 for positioning by the rebound action of the second compression spring 604, thus completing the quick fixation of the placement plate 7.

[0037] The working principle of this embodiment is as follows: In use, the adjustment knob 3 cooperates with the left rotating shaft 201, and the ratchet pawl 302 engages with the ratchet sleeve 102. The elasticity of the first compression spring 204 is used to firmly position the rotating seat 2, preventing the connecting parts from loosening due to frequent adjustment of the textbook's support angle. During the adjustment of the textbook placement plate 7 angle, by pulling the two pull knobs 601 to the left and right sides respectively, the spline shaft 602 slides out from the first spline groove 402 and the second spline groove 503, which can quickly release the restriction on the connecting plate 5, realizing the angle adjustment of the upper placement plate 7. Moreover, after the placement plate 7 is adjusted to a suitable angle, the rebound of the second compression spring 604 can make the spline shaft 602 insert into the first spline groove 402 and the second spline groove 503 for positioning, completing the quick fixation of the placement plate 7.

[0038] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A textbook placement device, comprising: A fixed base is provided, with a rotating seat on top; an adjustment knob is provided on the left side of the rotating seat; two support frames are provided on the rotating seat, and the two support frames are symmetrically distributed; a connecting plate is provided on the top of the two support frames, and a mounting shaft is provided at the connection between the support frame and the connecting plate; characterized in that a placement plate is provided on the top of the connecting plate; two symmetrically distributed fixed frames are provided at the bottom of the placement plate; a return spring is provided at the top of the front end of the fixed frame; a lower pressure plate is provided on the top of the return spring, and the lower pressure plate is distributed parallel to the placement plate; The fixed base has two first connecting frames distributed symmetrically on the rear side of the top, and the rotating seat is located between the two first connecting frames. The left first connecting frame is provided with a ratchet sleeve.

2. The textbook placement device according to claim 1, characterized in that, The rotating seat has rotating shafts at both ends, and the rotating seat is rotatably connected to the first connecting frame through the rotating shafts. Four limiting sliders are provided on the outer circumference of the left rotating shaft, and the four limiting sliders are distributed in a circular array. A first circular baffle is provided at the end of the left rotating shaft, and a first compression spring is fitted on the left rotating shaft.

3. A textbook placement device according to claim 2, characterized in that, The adjustment knob is provided with a sliding sleeve in the middle, and the inner circumference of the sliding sleeve is provided with four limiting grooves, which are distributed in a circular array. A ratchet pawl is provided on the right side of the adjustment knob.

4. A textbook placement device according to claim 3, characterized in that, The adjustment knob is slidably connected to the limiting slider of the left rotating shaft through the limiting slide groove, and the ratchet pawl matches the ratchet sleeve, and the first compression spring is supported between the adjustment knob and the first circular baffle.

5. A textbook placement device according to claim 1, characterized in that, The support frame has a connecting bolt at the bottom, which passes through the rotating seat and is controlled by a locking nut. A first spline groove is provided on one side of the support frame near the top.

6. A textbook placement device according to claim 5, characterized in that, The front end of the connecting plate is provided with a support plate, and the bottom of the connecting plate is provided with two sets of second connecting frames. The support frame is rotatably connected to the second connecting frame through a mounting shaft, and the second connecting frame located on the outer side is provided with a second spline groove.

7. A textbook placement device according to claim 6, characterized in that, One end of the mounting shaft is provided with a pull button, the mounting shaft is provided with a spline shaft, the other end of the mounting shaft is provided with a second circular baffle, and a second compression spring is fitted on the mounting shaft.

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