CN116066687A

CN116066687A - Multi-angle positioning and supporting device and electronic equipment

Info

Publication number: CN116066687A
Application number: CN202310042307.7A
Authority: CN
Inventors: 许瑞生; 娄海升; 许传松; 肖友胜
Original assignee: Hefei Lianbao Information Technology Co Ltd
Current assignee: Hefei Lianbao Information Technology Co Ltd
Priority date: 2023-01-28
Filing date: 2023-01-28
Publication date: 2023-05-05
Anticipated expiration: 2043-01-28
Also published as: CN116066687B

Abstract

The invention provides a multi-angle positioning and supporting device and electronic equipment, comprising an upper cover and a bottom plate which are hinged through a rotating shaft; the device also comprises two support structures; the support structure comprises: a rack; the rack comprises a strip-shaped body and a tooth part; the tooth part is arranged on the surface of one side of the strip-shaped body far away from the rotating shaft; the support assembly comprises a support frame and a pin shaft fixedly arranged on the support frame; the support frame is fixedly arranged on the bottom plate through one end of the support frame; the clamping hook piece comprises a body and a hook part arranged at one end of the body; the body is provided with a first through hole near the middle position thereof; the clamping hook piece is sleeved on the pin shaft through the first through hole; the two ends of the elastic piece are respectively connected with the supporting frame and the clamping hook piece; the clamping hook piece is clamped with the rack in a state that the upper cover and the bottom plate are mutually opened, so that a heat dissipation space is formed between the bottom plate and the upper cover; according to the multi-angle positioning support device, through adjusting the support structure, multi-angle support can be achieved, and an effective heat dissipation space is provided for electronic equipment.

Description

Multi-angle positioning and supporting device and electronic equipment

Technical Field

The invention belongs to the field of electronic equipment, and particularly relates to a multi-angle positioning and supporting device.

Background

Currently, for light, thin and portable, 60% of users select light, thin notebooks through the internet tone data display. However, the internal space of the light and thin notebook is limited, and the requirement of mainstream games on configuration cannot be met by using a low-power-consumption independent display card or an integrated display card.

How to make such notebooks have the same powerful performance and ultra-high expansibility as game books, and display card docking stations have been developed. However, the appearance of the display card docking station on the market is as heavy as a small desktop computer, occupies space, and is inconvenient to carry. The user's application experience is not ideal.

Because the appearance form, volume and price of the display card docking station are close to those of the desktop case, most users purchase the desktop case directly when selecting. In addition, the weight of the display card expansion dock is equal to that of a 14-inch notebook computer, and the display card expansion dock is inconvenient to carry. In addition, the independent graphics card has a single function, so that the user has no more choices.

The display card docking station with good performance is designed, so that the display card docking station has rich functions, is light in weight, convenient to carry, low in price, and different from a desktop case in appearance, is not abrupt, and is the best choice for improving game performance for a light and thin notebook user, and meanwhile, the application experience of the user is improved.

Disclosure of Invention

In view of the above-mentioned problems in the prior art, the present invention provides a multi-angle positioning and supporting device that is light in weight, portable and convenient to use.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the invention is as follows:

in one aspect, a multi-angle positioning support device is provided, comprising an upper cover and a bottom plate hinged by a rotating shaft; the multi-angle positioning and supporting device further comprises two supporting structures; the supporting structure is arranged between the upper cover and the bottom plate and is close to two ends of the rotating shaft: the support structure includes: one end of the rack is connected with the upper cover, and the other end of the rack faces the bottom plate; the rack comprises a strip-shaped body and a tooth part; the tooth part is arranged on the surface of one side of the strip-shaped body far away from the rotating shaft; the support assembly comprises a support frame and a pin shaft fixedly arranged on the support frame; the support frame is fixedly arranged on the bottom plate through one end of the support frame; the clamping hook piece comprises a body and a hook part arranged at one end of the body; the body is provided with a first through hole near the middle of the body; the clamping hook piece is sleeved on the pin shaft through the first through hole; the two ends of the elastic piece are respectively connected with the supporting frame and the clamping hook piece; when the upper cover and the bottom plate are mutually opened, the upper cover pulls the rack, and the elastic piece pulls the clamping hook piece; one end of the hook part is embedded into a tooth slot between the adjacent tooth parts under the action of moment; the clamping hook piece and the rack form clamping to form a heat dissipation space between the bottom plate and the upper cover.

In some embodiments of the invention, the body is further provided with a second through hole and a limit post; the second through hole and the limit column are positioned at the other side of the first through hole relative to the hook part and are sequentially far away from the first through hole; the limit post extends along the direction away from the surface of the body; the hook part is constructed into a triangular structure; the elastic piece is connected with the second through hole to form connection with the clamping hook piece.

In some embodiments of the invention, the spacing posts are configured as cylindrical structures; the axis of the limiting column is parallel to the axis of the pin shaft.

In some embodiments of the invention, the support structure further comprises a spring; the elastic piece is positioned below the elastic piece; one end of the elastic sheet is fixedly arranged on the support frame, and the other end of the elastic sheet is close to the rack; the rack also comprises a pushing part; the pushing part is positioned at the end part of the rack, which is close to the bottom plate; a separation part is formed at one end of the elastic sheet, which is close to the rack; the partition is configured in a convex structure in a direction toward the upper cover; the top of the convex structure is constructed into an arc surface; the elastic piece pulls the clamping hook piece in a state that the upper cover and the bottom plate are opened and form a support, so that the limit column is kept at one side of the separation part away from the rack; when the upper cover and the bottom plate are closed and unsupported, the upper cover is pulled upwards to drive the rack to rotate around the rotating shaft, and the pushing part is driven by the rack to rotate and pushes the limit column from below; the limiting column passes over one side of the separation part under the assistance of the pushing part and moves to one side of the separation part close to the rack; correspondingly, the hook part moves out of the tooth groove; the clamping hook piece is in clamping connection with the rack.

In some embodiments of the invention, the support structure further comprises a ram; one end of the ejector rod is connected with the upper cover; the surface of the ejector rod facing one side of the rack is an inclined surface; the inclined surface is inclined from top to bottom in a direction gradually away from the rack; in a state that the clamping hook piece is released from clamping with the rack and is buckled again, the ejector rod pushes the hook part from above through the inclined surface; the hook part moves in the tooth groove, and the limit column moves to one side of the separation part away from the rack.

In some embodiments of the invention, the urging portion extends in a direction away from the tooth portion; a concave structure is formed between the pushing part and the tooth part; a side surface of the pushing part facing the rack is configured into a convex arc-shaped surface; the limit column is constructed to be a cylindrical structure.

In some embodiments of the invention, the elastic member is provided as a spring.

In some embodiments of the invention, the support frame comprises a first support plate and a second support plate connected to each other; the first support plate is arranged along the axial direction of the rotating shaft, and the second support plate is arranged along the radial direction of the rotating shaft; the cross section of the support frame is in a gamma-shaped structure; the elastic piece is arranged on the first supporting plate; the pin shaft is arranged on the second supporting plate and is close to the rack.

In some embodiments of the invention, the rack is configured as a convex arc-shaped structure facing away from the axis of rotation.

In another aspect, an electronic device is provided, including the multi-angle positioning support device; the electronic equipment also comprises a notebook computer; the multi-angle positioning and supporting device is positioned below the notebook computer and is used for providing a heat dissipation space for the notebook computer.

Compared with the prior art, the invention has the beneficial effects that:

according to the multi-angle positioning and supporting device, the connection state between the rack and the clamping hook piece is adjusted through adjusting the supporting structure, namely, correspondingly, the multi-angle positioning and supporting device is used for effectively supporting electronic equipment and providing an effective heat dissipation space for the electronic equipment in different angles.

Drawings

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.

FIG. 1 is a schematic view of a multi-angle positioning support device according to an embodiment of the present invention;

FIG. 2 is a structural reference diagram of a multi-angle positioning support device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a rack of a multi-angle positioning and supporting device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a hook structure of a multi-angle positioning and supporting device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a multi-angle positioning support device according to an embodiment of the present invention;

FIG. 6 is a structural reference diagram of the multi-angle positioning support device in the closing process according to the embodiment of the present invention;

FIG. 7 is a schematic view of a partial structure of a multi-angle positioning support device according to an embodiment of the present invention;

FIG. 8 is a partial structural reference diagram of a multi-angle positioning support device according to an embodiment of the present invention;

FIG. 9 is a schematic view of a multi-angle positioning support device in a closing process according to an embodiment of the present invention;

FIG. 10 is a structural reference diagram of the multi-angle positioning support device in the closing process according to the embodiment of the present invention;

fig. 11 is a schematic structural view of a multi-angle positioning support device in a closed state according to an embodiment of the invention.

Description of the reference numerals

1-an upper cover; 2-a bottom plate; 3-supporting frames; 31-a first support plate; 32-a second support plate; 4-shrapnel; 41-dividing part; 6-a rack; 61-a bar; 62-tooth; 63-pushing part; 64-tooth slots; 7-a clamping hook piece; 71-body; 72-hooking part; 73-a first through hole; 74-a second through hole; 75-limiting columns; 8-an elastic member; 9-ejector rods; 10-pin shafts; 11-spindle

Detailed Description

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but not limiting the invention. In order to better understand the technical solutions of the present disclosure, the following detailed description of the present disclosure is provided with reference to the accompanying drawings and the specific embodiments. Embodiments of the present disclosure will be described in further detail below with reference to the drawings and specific embodiments, but not by way of limitation of the present disclosure.

All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

At present, due to the trend of light and thin electronic equipment and high power consumption (such as high configuration for games) design, the internal space of the electronic equipment is limited, and thus a bottleneck appears in the high power consumption and narrow heat dissipation space.

In one aspect, referring to fig. 1 and 4, an embodiment of the present invention provides a multi-angle positioning and supporting device, which includes an upper cover 1 and a bottom plate 2 hinged by a rotation shaft 11; the multi-angle positioning and supporting device further comprises two supporting structures; the supporting structure is arranged between the upper cover 1 and the bottom plate 2 and is close to two ends of the rotating shaft 11: the support structure includes: a rack 6, one end of which is connected to the upper cover 1, and the other end of which faces the bottom plate 2; the rack 6 includes a bar-shaped body 61 and a tooth 62; the tooth 62 is provided on the surface of the strip 61 on the side away from the rotation shaft 11; the support assembly comprises a support frame 3 and a pin shaft 10 fixedly arranged on the support frame; the support frame 3 is fixedly arranged on the bottom plate 2 through one end of the support frame; the hook 7 comprises a body 71 and a hook 72 arranged at one end of the body 71; the body 71 is provided with a first through hole 73 near the middle position thereof; the clamping hook 7 is sleeved on the pin shaft 10 through a first through hole 73; an elastic member 8, two ends of which are respectively connected with the supporting frame 3 and the hook member 7, and in this embodiment, the elastic member 8 is provided as a spring; in a state that the upper cover 1 and the bottom plate 2 are mutually opened, the upper cover 1 pulls the rack 6, and the elastic piece 8 pulls the clamping hook piece 7; one end of the hook 72 is embedded into the tooth groove 64 between the adjacent tooth parts 62 under the action of the moment; the hook 7 is engaged with the rack 6 to form a heat dissipation space between the bottom plate 2 and the upper cover 1.

In the above-described embodiment, the body 71 may be configured as a bar-shaped structure, and may also be configured as an irregular, irregularly-shaped structure; as long as the condition that the body 71 rotates around the pin shaft 10 and is engaged with the rack 6 is satisfied; the specific structure of the main body 71 may be selected according to practical situations, and is not further limited herein. In addition, regarding the thickness of the tooth 62, a corresponding adjustment may be made according to the variation range of the adjacent support angle to be adjusted, for example, when the variation range is large, the thickness is selected to be larger, and conversely, the width is smaller. When the variation amplitude of the adjacent supporting angles is smaller, personalized requirements can be met, and the use experience of users is improved.

In the above embodiment, the relative positional relationship between the hook member 7 and the rack 6 is changed, so that the size of the space between the upper cover 1 and the bottom plate 2 is correspondingly changed.

In the present embodiment, the rack 6 is constructed in a convex arc-shaped structure facing away from the rotation shaft 11.

Further, referring to fig. 3, the body 71 is further provided with a second through hole 74 and a stopper post 75; the second through hole 74 and the limit post 75 are positioned at the other side of the first through hole 73 relative to the hook 72 and are sequentially far away from the first through hole 73; the limit posts 75 extend in a surface direction away from the body 71; the elastic member 8 is connected with the hook member 7 by connecting with the second through hole 74. Further, the limit post 75 is configured in a cylindrical structure, and the axis of the limit post 75 is disposed parallel to the axis of the pin shaft 10. In the present embodiment, the first through hole 73, the second through hole 74, and the stopper post 75 may be disposed on a straight line, or may not be disposed on a straight line, as long as the relative positional relationship with the hook 72 is satisfied; in addition, the dimensions and physical properties of the elastic member 8 may be further adjusted accordingly, and the specific manner will not be further described herein.

Further, with reference to fig. 1, 2, 7 and 8, the support structure further includes a spring plate 4; the elastic piece 4 is positioned below the elastic piece 8; one end of the spring plate 4 is fixedly arranged on the support frame 3, and the other end is close to the rack 6; the rack 6 further comprises a pushing part 63; the pushing part 63 is positioned at the end part of the rack 6 close to the bottom plate 2; the spring plate 4 is provided with a separation part 41 at one end close to the rack 6; the partition 41 is configured as a convex structure in a direction toward the upper cover 1; the top of the convex structure is constructed into an arc surface; in a state where the upper cover 1 and the bottom plate 2 are opened and form a support, the elastic member 8 pulls the hook member 7 to hold the stopper post 75 at a side of the partition 41 away from the rack 6; in a state that the upper cover 1 and the bottom plate 2 are closed and unsupported, the upper cover 1 is pulled upwards to drive the rack 6 to rotate around the rotating shaft 11, the pushing part 63 rotates along with the rack 6, and the limit column 75 is pushed from below; the limit post 75 passes over one side of the partition 41 and moves to one side of the partition 41 close to the rack 6 under the assistance of the pushing part 63; correspondingly, the hook 72 moves out of the slot 64; the hook 7 is disengaged from the rack 6. In the present embodiment, by providing the elastic piece 4 and changing the position of the limit post 75 relative to the partition portion 41 of the elastic piece 4, the engagement and disengagement between the hook member 7 and the rack 6 are switched. Further, referring to fig. 4, the hook 72 may be configured in a triangular structure, wherein the base of the triangular structure may be disposed horizontally or inclined upward in a direction toward the rack 6. By this arrangement, during the upward movement of the upper cover 1, although the hook member 7 is under the action of the elastic member 8, the hook portion 72 of the hook member 7 cannot be engaged with the rack 6, so as to ensure that the upper cover 1 can smoothly drive the rack 6 to move.

In the above embodiment, the vertex angle of the hook 72 corresponding to the tooth slot 64 may be rounded to smooth the surface, so that the tooth surface of the tooth 62 is prevented from being scratched during contact with the tooth 62, thereby prolonging the service life. In the above embodiment, the hinge may be further configured between the stopper post 75 and the body 71, so that the stopper post 75 smoothly passes from one side to the other side of the partition 41 by cooperating with the convex structure having the top of the arc surface. Of course, the limiting post 75 and the body 71 may be integrally formed and slidably moved. Further, referring to fig. 3, the pushing portion 63 extends in a direction away from the tooth portion 62; a concave structure is formed between the pushing part 63 and the tooth part 62; the surface of the pushing part 63 facing the rack 6 is configured as a convex arc surface; by this arrangement, pushing of the stopper post 75 is facilitated.

Further, with reference to fig. 1, 2, 5, 6, 9 to 11, the support structure further comprises a push rod 9; one end of the ejector rod 9 is connected with the upper cover 1; the surface of the ejector rod 9 facing the side of the rack 6 is provided as an inclined surface; the inclined surface is inclined from top to bottom in a direction gradually away from the rack 6; in a state where the hook 7 is disengaged from the rack 6 and is re-engaged, the ejector rod 9 pushes the hook 72 from above through the inclined surface; the hook 72 moves into the tooth slot 64 and the limit post 75 moves to the side of the partition 41 away from the rack 6. In this embodiment, by providing the ejector rod 9, the elastic member 8 is assisted, and by the moment generated in common, the limit post 75 is ensured to be able to be located on the side of the partition 41 away from the rack 6 in the closed state of the upper cover 1 and the bottom plate 2, so as to prepare for the multi-angle positioning support device to be put into operation again.

In some embodiments of the present invention, referring to fig. 2, the support frame 3 includes a first support plate 31 and a second support plate 32 connected to each other; wherein the first support plate 31 is disposed along the axial direction of the rotating shaft 11, and the second support plate 32 is disposed along the radial direction of the rotating shaft 11; the cross section of the supporting frame 3 is in a reverse T-shaped structure; the elastic piece 8 is arranged on the first supporting plate 31; the pin 10 is provided on the second support plate 32 and is close to the rack 6. Through setting up above-mentioned setting up mode, can effectively improve the supporting stability of support frame 3.

The working principle of the multi-angle positioning and supporting device is described below to facilitate understanding of the structural relationship of the multi-angle positioning and supporting device.

In the initial state, the multi-angle positioning and supporting device has the upper cover 1 and the bottom plate 2 in the buckled state, and the limit post 75 of the hook member 7 is located at one side of the partition 41 away from the rack 6.

The multi-angle positioning and supporting device in the working state is described in the following operation steps:

the first step, the upper cover 1 is pulled upwards to drive the rack 6 to rotate around the rotating shaft 11; and stopping pulling after the upper cover 1 and the bottom plate 2 form a set angle; at this time, the hook 72 is fitted into the tooth groove 64; the clamping hook piece 7 is clamped with the rack 6, so that a fixed support is formed between the upper cover 1 and the bottom plate 2, and a space for heat dissipation is formed between the clamping hook piece and the rack;

secondly, in the interval from the initial position of the pushing part 63 of the rack 6 to the limit post 75 for pushing the hook 7, the opening angle of the upper cover 1 can be adjusted by continuously pulling the upper cover 1, i.e. the upper cover 1 gradually presents different inclination angles from small to large;

thirdly, after stopping working, releasing the supporting state between the upper cover 1 and the bottom plate 2; continuing to pull the upper cover 1 upwards until the pushing part 63 drives the limit column 75 to move from one side of the separation part 41 away from the rack 6 to one side of the separation part 41 close to the rack 6; at this time, the hook portion 72 is separated from the tooth groove 64, and the limit post 75 cannot pass over the partition portion 41 only by pulling of the elastic member 8 due to the blocking restriction of the partition portion 41; so far, the clamping hook piece 7 and the rack 6 keep a loose state;

fourthly, the upper cover 1 is pressed downwards, and the upper cover 1 can smoothly move downwards because the clamping hook piece 7 and the rack 6 are in a loose state; after moving a certain distance, the inclined surface of the ejector rod 9 facing the side of the rack 6 is propped against the hook 72 of the hook 7, the hook 7 rotates around the pin shaft 10 under the action of the moment of the ejector rod 9 and the elastic member 8, the limit post 75 passes over the partition 41 and returns to the side of the partition 41 away from the rack 6, and accordingly, the hook 72 is close to the rack 6 or is embedded into the tooth slot 64 again.

And fifthly, the upper cover 1 and the bottom plate 2 are buckled, and the multi-angle positioning and supporting device is restored to an initial state.

On the other hand, the embodiment of the invention also provides electronic equipment, which comprises the multi-angle positioning and supporting device; the electronic equipment also comprises a notebook computer; the multi-angle positioning and supporting device is positioned below the notebook computer and is used for providing a heat dissipation space for the notebook computer.

Furthermore, although illustrative embodiments are described herein, the scope includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of schemes across various embodiments), adaptations or alterations based on the present disclosure. Elements in the claims will be construed broadly based on the language used in the claims and not limited to examples described in the specification or during the lifetime of the application. Furthermore, the steps of the disclosed methods may be modified in any manner, including by reordering steps or inserting or deleting steps. It is intended, therefore, that the description be regarded as examples only, with a true scope being indicated by the following claims and their full range of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. Other embodiments may be used by those of ordinary skill in the art after reading the above description. Moreover, in the foregoing detailed description, various features may be grouped together to simplify the present disclosure. This should not be interpreted as intending that an unclaimed disclosed feature is essential to any claim. Thus, the following claims are incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. The multi-angle positioning and supporting device is characterized by comprising an upper cover and a bottom plate which are hinged through a rotating shaft; the multi-angle positioning and supporting device further comprises two supporting structures; the supporting structure is arranged between the upper cover and the bottom plate and is close to two ends of the rotating shaft: the support structure includes:

one end of the rack is connected with the upper cover, and the other end of the rack faces the bottom plate; the rack comprises a strip-shaped body and a tooth part; the tooth part is arranged on the surface of one side of the strip-shaped body far away from the rotating shaft;

the support assembly comprises a support frame and a pin shaft fixedly arranged on the support frame; the support frame is fixedly arranged on the bottom plate through one end of the support frame;

the clamping hook piece comprises a body and a hook part arranged at one end of the body; the body is provided with a first through hole near the middle of the body; the clamping hook piece is sleeved on the pin shaft through the first through hole;

the two ends of the elastic piece are respectively connected with the supporting frame and the clamping hook piece;

when the upper cover and the bottom plate are mutually opened, the upper cover pulls the rack, and the elastic piece pulls the clamping hook piece; one end of the hook part is embedded into a tooth slot between the adjacent tooth parts under the action of moment; the clamping hook piece and the rack form clamping to form a heat dissipation space between the bottom plate and the upper cover.

2. The multi-angle positioning and supporting device according to claim 1, wherein the body is further provided with a second through hole and a limiting column;

the second through hole and the limit column are positioned at the other side of the first through hole relative to the hook part and are sequentially far away from the first through hole; the limit post extends along the direction away from the surface of the body; the hook part is constructed into a triangular structure;

the elastic piece is connected with the second through hole to form connection with the clamping hook piece.

3. The multi-angle positioning support device of claim 2 wherein said spacing posts are configured as cylindrical structures; the axis of the limiting column is parallel to the axis of the pin shaft.

4. The multi-angle positioning support device of claim 2 wherein said support structure further comprises a spring plate; the elastic piece is positioned below the elastic piece; one end of the elastic sheet is fixedly arranged on the support frame, and the other end of the elastic sheet is close to the rack;

the rack also comprises a pushing part; the pushing part is positioned at the end part of the rack, which is close to the bottom plate;

a separation part is formed at one end of the elastic sheet, which is close to the rack; the partition is configured in a convex structure in a direction toward the upper cover; the top of the convex structure is constructed into an arc surface;

the elastic piece pulls the clamping hook piece in a state that the upper cover and the bottom plate are opened and form a support, so that the limit column is kept at one side of the separation part away from the rack;

when the upper cover and the bottom plate are closed and unsupported, the upper cover is pulled upwards to drive the rack to rotate around the rotating shaft, and the pushing part is driven by the rack to rotate and pushes the limit column from below; the limiting column passes over one side of the separation part under the assistance of the pushing part and moves to one side of the separation part close to the rack; correspondingly, the hook part moves out of the tooth groove; the clamping hook piece is in clamping connection with the rack.

5. The multi-angle positioning support device of claim 4 wherein said support structure further comprises a ram; one end of the ejector rod is connected with the upper cover; the surface of the ejector rod facing one side of the rack is an inclined surface; the inclined surface is inclined from top to bottom in a direction gradually away from the rack;

in a state that the clamping hook piece is released from clamping with the rack and is buckled again, the ejector rod pushes the hook part from above through the inclined surface; the hook part moves in the tooth groove, and the limit column moves to one side of the separation part away from the rack.

6. The multi-angle positioning support device of claim 4 wherein said pushing portion extends in a direction away from said teeth; a concave structure is formed between the pushing part and the tooth part; a side surface of the pushing portion facing the rack is configured as a convex arc-shaped surface.

7. The multi-angle positioning support device of claim 1 wherein said resilient member is provided as a spring.

8. The multi-angle positioning support device of claim 1 wherein said support frame comprises a first support plate and a second support plate connected to each other; the first support plate is arranged along the axial direction of the rotating shaft, and the second support plate is arranged along the radial direction of the rotating shaft; the cross section of the support frame is in a gamma-shaped structure;

the elastic piece is arranged on the first supporting plate;

the pin shaft is arranged on the second supporting plate and is close to the rack.

9. The multi-angle positioning support device of any one of claims 1-8 wherein said rack is configured as a convex arc-shaped structure facing away from said axis of rotation.

10. An electronic device comprising the multi-angle positioning support device of any one of claims 1 to 9; the electronic equipment also comprises a notebook computer; the multi-angle positioning and supporting device is positioned below the notebook computer and is used for providing a heat dissipation space for the notebook computer.