Angle-adjustable learning base plate

Abstract

An angle-adjustable learning base plate comprises a base plate body. The supporting piece is rotationally connected with the base plate body; the supporting piece is provided with a first connecting part, and the base plate body is provided with a second connecting part. And the angle adjusting mechanism is connected with the first connecting part and the second connecting part and is suitable for locking or unlocking the angle between the supporting piece and the base plate main body. According to the learning base plate with the adjustable angle, the supporting piece is rotationally connected to the base plate body, the included angle formed between the supporting piece and the base plate body is adjusted, and the angle between the supporting piece and the base plate body is locked or unlocked through the angle adjusting mechanism, so that the purpose of providing a bearing face inclination angle capable of being selected in a personalized mode for a user is achieved; therefore, the vision of the user is more effectively protected, and meanwhile, the probability of poor body types such as humpback caused by lowering the head is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of learning aids, specifically to an adjustable-angle learning mat. Background Technology

[0002] A study mat is a reading and writing aid that is placed on a desktop.

[0003] However, most learning mats on the market currently have a fixed angle for the reading and writing surface relative to the desktop, such as 0 degrees or other fixed angles.

[0004] Therefore, there is a need to provide a learning mat with an adjustable tilt angle. Summary of the Invention

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable-angle study mat includes a mat body 2 having a reference surface facing the desktop and a support surface 201 for the user to read and write on; a support member 1 rotatably connected to the mat body 2, adapted to form different angles with the mat body 2, thereby allowing the support surface 201 to have different tilt angles relative to the desktop; the support member 1 is provided with a first connecting part 11, and the mat body 2 is provided with a second connecting part 21 that rotatably engages with the first connecting part 11; an angle adjustment mechanism 3 connects the first connecting part 11 and the second connecting part 21, adapted to lock or unlock the angle between the support member 1 and the mat body 2.

[0007] Furthermore, the angle adjustment mechanism 3 includes a connector 32 and an operating member 31; one end of the connector 32 is connected to the first connecting part 11, and the other end passes through the second connecting part 21 and is connected to the operating member 31, or one end of the connector 32 is connected to the second connecting part 21, and the other end passes through the first connecting part 11 and is connected to the operating member 31; rotating the operating member 31 can cause the first connecting part 11 and the second connecting part 21 to abut against each other or release from abutment, thereby locking or releasing the angle between the support member 1 and the pad body 2.

[0008] Furthermore, the angle adjustment mechanism 3 also includes a first positioning part 33 and a second positioning part 34; the first positioning part 33 is disposed on the first connecting part 11, and the second positioning part 34 is disposed on the second connecting part 21. After rotating the operating member 31 to a predetermined stroke, the first positioning part 33 and the second positioning part 34 can be engaged, thereby restricting the rotation between the first connecting part 11 and the second connecting part 21.

[0009] Furthermore, the second connecting part 21 includes a hinge seat 210; the hinge seat 210 is connected to the pad body 2 and is located on one side of the supporting surface 201, or on one side of the reference surface, or on the side between the supporting surface 201 and the reference surface; the second positioning part 34 is provided on the hinge seat 210.

[0010] Furthermore, the first positioning part 33 includes a plurality of first positioning teeth, which are distributed in a circular pattern on the first connecting part 11; the second positioning part 34 includes a plurality of second positioning teeth that cooperate with the first positioning teeth.

[0011] Furthermore, a first annular limiting ring 211 extends from the hinge seat 210 toward the first connecting portion 11 and is distributed circumferentially along the connector 32; a cap ring 111 that cooperates with the first limiting ring 211 is provided on the first connecting portion 11.

[0012] Furthermore, the connector 32 is fixedly connected to the hinge seat 210; a second annular limiting ring 212 extends from the hinge seat 210 toward the first connecting portion 11; a connecting post 112 extends from the first connecting portion 11 toward the hinge seat 210; the connecting post 112 is assembled in the middle of the second limiting ring 212; an assembly hole 1121 is provided in the connecting post 112; the connector 32 passes through the assembly hole 1121 and is connected to the operating member 31.

[0013] Furthermore, a first stop 41 is provided at the first connecting part 11, located between the cap ring 111 and the connecting post 112; a second stop 42 is provided between the hinge seats 210, located between the first limiting ring 211 and the second limiting ring 212; after the first connecting part 11 rotates by a predetermined angle, the first stop 41 cooperates with the second stop 42 to brake the rotation between the support member 1 and the pad body 2; the tilt angle of the supporting surface 201 relative to the tabletop is in the range of 0-15 degrees, 3-12 degrees, or 5-18 degrees.

[0014] Furthermore, the angle adjustment mechanism 3 also includes an elastic element; the elastic element is connected between the first connecting part 11 and the second connecting part 21, and is adapted to tend to move the first connecting part 11 away from the second connecting part 21.

[0015] Furthermore, the operating component 31 is a lever, one end of which has an eccentric end 311. The eccentric end is rotatably connected to the connecting component 32. Rotating the end of the operating component 31 away from the eccentric end to a first position allows the first connecting part 11 and the second connecting part 21 to abut against each other. Rotating the operating component 31 to a second position releases the abutment between the first connecting part 11 and the second connecting part 21. Alternatively, the operating component 31 is a knob, which is threadedly connected to the connecting component 32. Rotating the knob fixes or releases the abutment between the first connecting part 11 and the second connecting part 21.

[0016] This utility model discloses an adjustable angle learning mat. By rotating the support member connected to the main body of the mat, the included angle formed between the support member and the main body of the mat can be adjusted, thereby allowing the supporting surface to have different tilt angles relative to the table. Furthermore, by using an angle adjustment mechanism, the angle between the support member and the main body of the mat can be locked or unlocked, so as to provide users with a personalized selection of the tilt angle of the supporting surface. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the adjustable-angle learning mat disclosed in Embodiment 1 of this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective.

[0020] Figure 3 for Figure 1 A schematic diagram of the structure from a top-down perspective.

[0021] Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure of BB.

[0022] Figure 5 This is an exploded structural diagram of the adjustable-angle learning mat in Example 1.

[0023] Figure 6 for Figure 5 A magnified view of the structure at point A in the middle.

[0024] Figure 7 for Figure 5A magnified view of the structure at point C.

[0025] Figure 8 This is a schematic diagram of the structure of the operating component in Example 1.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Support component; 11. First connecting part;

[0028] 101. Middle rod; 102. End rod; 111. Cap ring; 112. Connecting post; 1121. Assembly hole;

[0029] 2. Main body of the pad; 21. Second connecting part;

[0030] 201. Support surface; 210. Hinge seat; 211. First limiting ring; 212. Second limiting ring;

[0031] 3. Angle adjustment mechanism;

[0032] 31. Operating component; 32. Connecting component; 33. First positioning part; 34. Second positioning part;

[0033] 311. Eccentric end; 3111. Discent center; 3112. Proximal center;

[0034] 41. First stop part; 42. Second stop part. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature; "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] Terms such as “installation,” “connection,” “linking,” and “fixing” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly defined.

[0038] Terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These are used solely for the purpose of describing the technical solutions of this invention and do not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. For example, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium; "above," "on top," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature; "below," "under," and "below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] This invention provides an adjustable-angle study mat, comprising a mat body 2 having a reference surface facing the desktop and a support surface 201 for the user to read and write on; a support member 1, rotatably connected to the mat body 2, adapted to form different angles with the mat body 2, thereby allowing the support surface 201 to have different tilt angles relative to the desktop; the support member 1 is provided with a first connecting part 11, and the mat body 2 is provided with a second connecting part 21 that rotatably engages with the first connecting part 11; an angle adjustment mechanism 3, connecting the first connecting part 11 and the second connecting part 21, adapted to lock or unlock the angle between the support member 1 and the mat body 2, so that the user can personalize the tilt angle of the support surface 201 relative to the desktop to suit different user body types or usage preferences.

[0040] Specifically, the angle adjustment mechanism 3 includes a connector 32 and an operating member 31; one end of the connector 32 is connected to the first connecting part 11, and the other end passes through the second connecting part 21 and is connected to the operating member 31, or one end of the connector 32 is connected to the second connecting part 21, and the other end passes through the first connecting part 11 and is connected to the operating member 31; rotating the operating member 31 can cause the first connecting part 11 and the second connecting part 21 to abut against each other or to release the abutment, thereby locking or releasing the angle between the support member 1 and the pad body 2.

[0041] One end of the connector 32 away from the operating member 31 is fixedly connected to the first connecting part 11 or the second connecting part 21, or one end of the connector 32 away from the operating member 31 has a limiting end, and the other end passes through the first connecting part 11 and the second connecting part 21 and is connected to the operating member 31.

[0042] Rotating the operating component 31 can cause the first connecting part 11 and the second connecting part 21 to abut against each other or to release the abutment, thereby fixing or releasing the angle between the support member 1 and the pad body 2.

[0043] In one embodiment, after the operating member 31 forces the first connecting part 11 and the second connecting part 21 to abut against each other, the friction between the first connecting part 11 and the second connecting part 21 restricts the rotation between the support member 1 and the pad body 2, thereby fixing the angle between the two to a certain extent.

[0044] In other embodiments, such as Embodiment 1, a first positioning part 33 and a second positioning part 34 are provided between the first connecting part 11 and the second connecting part 21. After the operating member 31 forces the first connecting part 11 and the second connecting part 21 to abut against each other, the locking and limiting between the first positioning part 33 and the second positioning part 34 locks the angle between the support member 1 and the pad body 2.

[0045] The following explanation uses a learning pad with a snap-fit ​​limit and a lever as the operating component 31 as an example.

[0046] Example 1

[0047] As shown in Figure 8, a preferred embodiment of an adjustable-angle learning mat provided by the present invention includes a mat body 2, a support member 1, and an angle adjustment mechanism 3.

[0048] The pad body 2 has the aforementioned reference surface and a support surface 201 suitable for writing. In this embodiment, the reference surface and the support surface 201 are preferably arranged opposite to each other, with the reference surface located at the bottom end of the pad body 2, and the support member 1 connected to one side of the support surface 201 of the pad body 2.

[0049] Support 1 is rotatably connected to the end of pad body 2 away from the messenger.

[0050] In this embodiment, preferably, the support member 1 includes two end rods 102 and a middle rod 101. The two ends of the middle rod 101 are respectively connected to one end of one end rod 102. A first connecting part 11 is respectively provided at the other end of the two end rods 102. A second connecting part 21 is provided on both sides of the pad body 2, which is rotatably engaged with one of the first connecting parts 11.

[0051] The two end rods 102 and the middle rod 101 that make up the support member 1 are connected in sequence to form an n-shaped structure, which allows the two end rods 102 to be adjusted synchronously, improving the angle adjustment efficiency and forming a more stable support, thereby obtaining a better user experience. In some other embodiments, the middle rod 101 may not be provided, and only a support end rod 102 is rotatably connected to each side of the pad body 2.

[0052] A first connecting part 11 is provided at the end of the middle rod 101, which is away from the two end rods 102.

[0053] Preferably, a second connecting part 21 is provided on each of the left and right sides of the pad body 2, and each of them is rotatably engaged with a first connecting part 11, so that the support member 1 is rotatably mounted on the pad body 2. When it is necessary to adjust the tilt angle of the supporting surface 201, the support member 1 is rotated to be set at an angle with the pad body 2. When not in use, the support member 1 and the pad body 2 can be stacked together to reduce the space occupied by this device and enrich the applicable scenarios of the product.

[0054] Preferably, the positions of the two second connecting parts 21 are both located between the two first connecting parts 11, that is, the first connecting parts 11 are assembled on the outside of the second connecting parts 21, so as to reduce the space occupied by the supporting surface 201.

[0055] Furthermore, the second connecting part 21 is detachably connected to the main body of the pad body 2. The pad body 2 is provided with an end connector, and the second connecting part 21 is provided with a connection opening, into which the end connector is inserted. In this embodiment, the second connecting part 21 is detachably connected to the pad body 2 via a hinge seat 210, and the connection opening is located at the lower end of the hinge seat 210.

[0056] Preferably, a raised annular retaining edge is provided in the connecting opening, and a retaining groove is provided in the middle of the end connector. The retaining edge is inserted into the retaining groove, thereby cooperating with the connecting opening and the end connector to form a double-insertion combination, ensuring the connection stability between the second connecting part 21 and the pad body 2. Preferably, the connecting opening and the end connector are further fixed by screws. In some other embodiments, the second connecting part 21 is integrally formed with the pad body 2.

[0057] Correspondingly, the angle adjustment mechanism 3 is provided in two sets, which are respectively connected to a set distributed on the left and right sides, and a combination formed by the first connecting part 11 and the second connecting part 21.

[0058] One end of the connector 32 away from the operating member 31 is fixedly connected to the first connecting part 11 or the second connecting part 21, or one end of the connector 32 away from the operating member 31 has a limiting end, and the other end passes through the first connecting part 11 and the second connecting part 21 and is connected to the operating member 31.

[0059] In this embodiment, specifically, a shaft hole is provided on the first connecting part 11. The shaft hole is an assembly hole 1121. One end of the connector 32 is fixedly connected to the second connecting part 21, and the other end passes through the shaft hole and connects to the operating part 31. This allows the operating part 31 to be located on the outside of the pad body 2, facilitating operation of the operating part 31, reducing interference from the end rod 102, and thus optimizing the user experience. In some embodiments with poorer performance, the connector 32 can be fixedly connected to the first connecting part 11, and a shaft hole can be provided on the second connecting part 21. The connector 32 passes through the shaft hole and connects to the operating part 31.

[0060] In other embodiments, a shaft hole is provided on the first connecting part 11 and the second connecting part 21 respectively. A limiting end is provided at one end of the connector 32, and the other end passes through the shaft holes of the first connecting part 11 and the second connecting part 21 in sequence and is connected to the operating part 31. Alternatively, the other end passes through the holes of the second connecting part 21 and the first connecting part 11 in sequence and is connected to the operating part 31. The limiting end and the operating part 31 are located on the two outer sides of the combination of the first connecting part 11 and the second connecting part 21 respectively. Thus, when the operating part 31 is rotated, the first connecting part 11 and the second connecting part 21 are forced to abut against each other under the combined action of the operating part 31 and the limiting end of the connector 32.

[0061] Furthermore, the angle adjustment mechanism 3 also includes a first positioning part 33 and a second positioning part 34; the first positioning part 33 is connected to the first connecting part 11, and the second positioning part 34 is connected to the second connecting part 21. After rotating the operating member 31 to a predetermined stroke, the first positioning part 33 and the second positioning part 34 can be engaged, thereby restricting the rotation between the first connecting part 11 and the second connecting part 21.

[0062] The first positioning part 33 and the second positioning part 34 are preferably meshing toothed structures. The first positioning part 33 includes a plurality of first positioning teeth, which are distributed in a circular pattern on the first connecting part 11; the second positioning part 34 includes a plurality of second positioning teeth that cooperate with the first positioning teeth; preferably, the first positioning teeth and the second positioning teeth are both involute teeth.

[0063] In this embodiment, the first positioning tooth is preferably located on the end face of the first connecting part 11, and the second positioning tooth is located on the end face of the second connecting part 21, both having a toothed disc structure. Specifically, the first positioning tooth is located at the bottom of the cap of the first connecting part 11, circumferentially distributed between the connector 32 and the cap ring 111, and distributed in a circular shape. The second positioning tooth is located on the end face of the second limiting ring 212 near the first connecting part 11. After the rotation operation releases the angle lock, the support 1 can be directly rotated to adjust to the expected angle, and then the operating part 31 can be rotated in the opposite direction to fix the angle between the support 1 and the pad body 2. In other embodiments, the first positioning tooth can be distributed on the outer wall of the connector 32, and the second positioning tooth is distributed on the inner wall of the second limiting ring 212.

[0064] Furthermore, the second connecting part 21 includes a hinge seat 210; the hinge seat 210 is connected to the pad body 2 and is located on one side of the supporting surface 201, on one side of the reference surface, or on the side between the supporting surface 201 and the reference surface; the aforementioned second positioning part 34 is provided on the hinge seat 210. In this embodiment, the hinge seat 210 is located on one side of the supporting surface 201, which facilitates observation and operation of the operating component 31, thereby forming a visual distribution of operation and optimizing the user experience of the product.

[0065] In this embodiment, the rotational engagement between the first connecting portion 11 and the second connecting portion 21 is achieved through a rotating shaft and a shaft groove. Specifically, a second annular limiting ring 212 extends from the second connecting portion 21 on the hinge seat 210 toward the first connecting portion 11, and a shaft groove is formed on the inner side of the second limiting ring 212; a cylindrical connecting post 112 extends from the first connecting portion 11 toward the second connecting portion 21, serving as a rotating shaft, and the connecting post 112 is fitted into a shaft hole formed on the side of the second limiting ring 212.

[0066] In this embodiment, the connector 32 is fixedly connected to the second connecting part 21 of the hinge seat 210; an assembly hole 1121 is provided in the connecting post 112; the connector 32 passes through the assembly hole 1121 and is connected to the operating member 31; the connector 32 can be slidably disposed or movably disposed in the assembly hole 1121 in the axial direction. In this embodiment, the connector 32 can also rotate in the assembly hole 1121.

[0067] Preferably, the axis of rotational engagement between the first connecting part 11 and the second connecting part 21 is concentrically arranged with the connecting member 32.

[0068] In this embodiment, the rotation between the first connecting part 11 and the second connecting part 21 is achieved by the hinged combination of the connecting member 32 and the connecting column 112, and the hinged combination of the second limiting ring 212 and the connecting column 112. The two sets of hinged structures are combined to achieve the rotational connection. One of the purposes is to further improve the structural stability of the rotation between the support member 1 and the pad body 2.

[0069] In some other embodiments, the rotational engagement between the first connecting part 11 and the second connecting part 21 is achieved by a rotating shaft. The rotating shaft and the connecting member 32 are integrated into one unit. For example, the connecting member 32 is fixed to the first connecting part 11, and a shaft connection hole is provided on the second connecting part 21. The connecting member 32 passes through the shaft connection hole and connects to the operating member 31. At this time, the connecting member 32 is both the shaft that realizes the rotational connection between the first connecting part 11 and the second connecting part 21, and the structure that cooperates with the operating member 31 to achieve angle fixation.

[0070] Furthermore, a first annular limiting ring 211 extends from the hinge seat 210 toward the first connecting portion 11 and is distributed circumferentially along the connector 32; a cap ring 111 that mates with the first limiting ring 211 is provided on the first connecting portion 11. The centers of the first limiting ring 211 and the cap ring 111 are concentrically arranged with the rotation of the first connecting portion 11 and the second connecting portion 21, in order to further increase the stability of the rotational function.

[0071] Furthermore, the cap ring 111 is assembled on the outer periphery of the first limiting skirt ring, and the connecting post 112 is assembled on the inner side of the second limiting ring 212, so that the first limiting ring 211 and the second limiting ring 212 are both located between the cap ring 111 and the connecting post 112, thereby increasing the stability of the product structure.

[0072] Furthermore, a first stop 41 is provided at the first connecting portion 11, located between the cap ring 111 and the connecting post 112, preferably two first stop 41s are provided; a second stop 42 is provided between the hinge seats 210, located between the first limiting ring 211 and the second limiting ring 212, preferably the second stop 42 is fan-shaped; after the first connecting portion 11 rotates by a predetermined angle, the rotation of the first stop 41 is interfered with by the second stop 42, braking the rotation between the support member 1 and the pad body 2, thereby keeping the support member 1 at the predetermined angle. The predetermined angle is preferably the middle rod 101 of the support member 1, which is in contact with the distal edge of the pad body 2.

[0073] Preferably, the tilt angle of the support surface 201 relative to the tabletop ranges from 0 to 15 degrees, 3 to 12 degrees, or 5 to 18 degrees. In this embodiment, the tilt angle of the support surface 201 relative to the tabletop ranges from 0 to 15 degrees. At the initial angle, the central rod 101 of the support member 1 is in contact with the far edge of the pad body 2. At this time, the tilt angle of the support surface is 0 degrees, and the reference surface is in contact with the tabletop.

[0074] Furthermore, the angle adjustment mechanism 3 also includes an elastic element connected between the first connecting part 11 and the second connecting part 21, adapted to tend to move the first connecting part 11 away from the second connecting part 21.

[0075] When the actuating element 31 releases the abutment between the first connecting part 11 and the second connecting part 21, the elastic element causes the first positioning part 33 and the second positioning part 34 to separate, that is, the first positioning tooth and the second positioning tooth separate more quickly, thereby improving the adjustment efficiency. In this embodiment, the elastic element is preferably a compression spring, with its two ends abutting against the bottom wall of the shaft groove formed by the second limiting ring 212 on the connecting post 112 of the first connecting part 11 and the second connecting part 21, respectively.

[0076] In this embodiment, the operating member 31 is a lever, one end of which has an eccentric end 311. The eccentric end 311 is rotatably connected to the connecting member 32. Rotating the end of the operating member 31 away from the eccentric end 311 to the first position causes the eccentric end 311 to press against the first connecting part 11. That is, the distal point 3111 of the eccentric end 311 contacts the first connecting part 11, causing it to move closer to the second connecting part 21. At the same time, the connecting member 32, driven by the eccentric end 311, drives the second connecting part 21 to move closer to the first connecting part 11, so that the first connecting part 11 and the second connecting part 21 abut against each other. The first positioning part 33 and the second positioning part 34 engage, locking the angle between the support member 1 and the pad body 2.

[0077] Rotate the operating component 31 to the second position, the eccentric end 311 eliminates or reduces the pressure on the first connecting part 11, that is, the proximal point 3112 of the eccentric end 311 contacts the first connecting part 11, the force of the first connecting part 11 and the second connecting part 21 squeezing each other disappears or weakens, thereby releasing the state of mutual abutment between the first connecting part 11 and the second connecting part 21, the first positioning part 33 and the second positioning part 34 separate, and the angle between the locking support 1 and the pad body 2 is released; then rotate and adjust the support 1, and after rotating to the expected angle, rotate the operating component 31 to the first position again to fix the angle between the support 1 and the pad body 2, and complete the angle adjustment of the support surface 201 suitable for reading and writing.

[0078] Example 2

[0079] As a variation of the above embodiment, the operating member 31 is a knob, which is threadedly connected to the connecting member 32. By rotating the knob, the first connecting part 11 and the second connecting part 21 are made to abut against each other and fixed, or the abutment between the first connecting part 11 and the second connecting part 21 is released.

[0080] In this embodiment, the support member 1 includes a horizontal bar and an end bar 102. The lower end of the vertical bar is provided with the aforementioned first connecting portion 11, and the horizontal bar is connected to the upper end of the end bar 102. In some other embodiments with poorer performance, the support member 1 may only have an end bar 102.

[0081] The connector 32 is a cylindrical screw with a limiting end. The first connecting part 11 and the second connecting part 21 are respectively provided with shaft holes. The other end of the connector 32 passes through the two shaft holes and is threaded to the knob. At this time, the connector 32 also serves as a rotating shaft to realize the rotational connection between the first connecting part 11 and the second connecting part 21.

[0082] When it is necessary to adjust the angle of the support member 1, turn the knob to release the mutual abutment of the first connecting part 11 and the second connecting part 21, then rotate the support member 1 to adjust it. After rotating to the expected angle, turn the knob in the opposite direction to make the first connecting part 11 and the second connecting part 21 abut against each other, thereby fixing the angle between the support member 1 and the pad body 2, and finally completing the angle adjustment of the support member 1.

[0083] This utility model discloses an adjustable-angle study mat. By rotating the support member connected to the main body of the mat, the included angle formed between the support member and the main body of the mat can be adjusted, thereby allowing the supporting surface to have different tilt angles relative to the desktop. Furthermore, through an angle adjustment mechanism, the angle between the support member and the main body of the mat can be locked or unlocked, so as to provide users with a personalized choice of the tilt angle of the supporting surface, forming a reading and writing angle more suitable for the user, thereby more effectively protecting the user's eyesight, and at the same time, effectively reducing the probability of poor posture such as hunchback caused by looking down.

[0084] The above embodiments only illustrate a portion of the implementation methods of the present invention. Any modifications, substitutions, and improvements made by those skilled in the art without departing from the inventive concept of the present invention, without creative effort, are all within the protection scope of the present invention.

Claims

1. An angle adjustable learning bolster, characterized in that: The cushion plate body (2) has a reference surface facing the desktop and a supporting surface (201) for reading and writing of the user; The support (1) is rotatably connected to the cushion plate body (2) and is adapted to form different angles with the cushion plate body (2) so that the supporting surface (201) has different inclinations relative to the desktop; The support (1) is provided with a first connecting part (11), and the cushion plate body (2) is provided with a second connecting part (21) rotatably matched with the first connecting part (11); An angle adjusting mechanism (3) is connected between the first connecting part (11) and the second connecting part (21) and is adapted to lock or unlock the angle between the support (1) and the cushion plate body (2).

2. The angle adjustable learning bolster of claim 1, wherein, The angle adjusting mechanism (3) comprises a connecting piece (32) and an operating piece (31); One end of the connecting piece (32) is connected to the first connecting part (11), and the other end of the connecting piece (32) passes through the second connecting part (21) and is connected to the operating piece (31), or one end of the connecting piece (32) is connected to the second connecting part (21), and the other end of the connecting piece (32) passes through the first connecting part (11) and is connected to the operating piece (31); Rotating the operating piece (31) can make the first connecting part (11) and the second connecting part (21) abut against each other or be separated, so as to lock or unlock the angle between the support (1) and the cushion plate body (2).

3. The angle adjustable learning bolster of claim 2, wherein, The angle adjusting mechanism (3) further comprises a first positioning part (33) and a second positioning part (34); The first positioning part (33) is arranged on the first connecting part (11), and the second positioning part (34) is arranged on the second connecting part (21); after the operating piece (31) is rotated to a predetermined stroke, the first positioning part (33) and the second positioning part (34) can be engaged, so as to limit the rotation between the first connecting part (11) and the second connecting part (21).

4. The angle adjustable learning bolster of claim 3, wherein, The second connecting part (21) comprises a hinged seat (210); The hinged seat (210) is connected to the cushion plate body (2) and is located on one side of the supporting surface (201), or on one side of the reference surface, or on a side surface between the supporting surface (201) and the reference surface; The second positioning part (34) is arranged on the hinged seat (210).

5. The angle adjustable learning bolster of claim 4, wherein, The first positioning part (33) comprises a plurality of first positioning teeth which are circularly distributed on the first connecting part (11); The second positioning part (34) comprises a plurality of second positioning teeth matched with the first positioning teeth.

6. The angle adjustable learning bolster of claim 4 or 5, wherein, A circular annular first limiting ring (211) extends from the hinged seat (210) towards the first connecting part (11) and is distributed circumferentially along the connecting piece (32); A cap ring (111) matched with the first limiting ring (211) is arranged on the first connecting part (11).

7. The angle adjustable learning bolster of claim 6, wherein, The connecting piece (32) is fixedly connected to the hinged seat (210); A circular annular second limiting ring (212) extends from the hinged seat (210) towards the first connecting part (11). The first connecting part (11) extends a connecting column (112) towards the hinge seat (210); The connecting column (112) is assembled in the second limiting ring (212); An assembly hole (1121) is arranged in the connecting column (112); The connecting piece (32) passes through the assembly hole (1121) and is connected with the operating piece (31).

8. The angle adjustable learning bolster of claim 7, wherein, A first stop part (41) is arranged in the first connecting part (11) and located between the cap ring (111) and the connecting column (112); A second stop part (42) is arranged between the hinge seat (210) and located between the first limiting ring (211) and the second limiting ring (212); After the first connecting part (11) rotates by a predetermined angle, the first stop part (41) cooperates with the second stop part (42) to brake the rotation between the support (1) and the base plate body (2); The inclination angle of the supporting surface (201) relative to the desktop is 0-15 degrees, 3-12 degrees or 5-18 degrees.

9. The angle adjustable learning bolster of any of claims 2-5, 7, 8, wherein, The angle adjusting mechanism (3) further comprises an elastic member; The elastic member is connected between the first connecting part (11) and the second connecting part (21) and is adapted to make the first connecting part (11) tend to move away from the second connecting part (21).

10. The angle adjustable learning bolster of claim 9, wherein, The operating piece (31) is a lever, one end of which has an eccentric end head (311) rotationally connected with the connecting piece (32); rotating the operating piece (31) away from one end of the eccentric end head to a first position can make the first connecting part (11) and the second connecting part (21) abut against each other, and rotating the operating piece (31) to a second position can release the abutting state between the first connecting part (11) and the second connecting part (21); Or the operating piece (31) is a knob which is threadedly connected with the connecting piece (32); by rotating the knob, the abutting state between the first connecting part (11) and the second connecting part (21) can be fixed or released.

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