CN222941953U - Shelf structure of computer desk and computer desk - Google Patents

Abstract

The utility model relates to a shelf structure of a computer table and a computer table, the shelf structure comprises: a support seat; a shelf, which is rotatably connected to the support seat via a first rotating shaft; the back of the shelf has a positioning plate extending backward, the positioning plate has positioning recesses arranged in sequence along the circumferential direction centered on the first rotating shaft, the support seat is provided with a positioning pin that can move in a direction parallel to the first rotating shaft, the positioning pin has a locking state that can be inserted into the positioning recess on the positioning plate to limit the rotation of the shelf relative to the support seat as its moving position changes, and an unlocking state that is released from the positioning recess on the positioning plate to allow the shelf to rotate relative to the support seat. The advantage is that the inclination angle of the shelf can be conveniently adjusted according to the user's use needs and the user's posture, thereby improving the user's use experience.

Description

Shelf structure of computer desk and computer desk

Technical Field

The utility model relates to the technical field of computer tables, in particular to a shelf structure of a computer table and the computer table.

Background

The computer desk is office furniture which can be used for placing electronic products such as notebook computers and the like, and aims to provide a stable working platform and a storage space. With the popularization of electronic products such as computers and IPAD, the computer desk is widely applied, and is not only limited to families and offices, but also relates to public places such as schools, libraries and hospitals.

The utility model discloses a lifting table for live broadcasting, which comprises a table top, a support frame connected to the back of the table top and a lifting column with the top connected with the support frame, wherein the support frame is arranged on the table top, a wire outlet is arranged on the table top, a wire buckling box cover is arranged on the wire outlet, a loudspeaker box placing box is fixedly arranged on the back of the table top, a guide rail arranged along the longitudinal direction is arranged on the table top, the support frame is connected with the guide rail and matched with the guide rail, and a mobile phone or a flat plate is placed on the support frame.

However, the lifting table in the patent application has certain defects that the top of the bracket is a conventional clamping bracket, the rotation angle of the bracket is fixed, the self-adaptive adjustment cannot be performed according to the use requirement of a mobile phone or a flat plate and the gesture of a user, and the use experience of the user is reduced.

Disclosure of utility model

The utility model aims to provide a shelf structure of a computer desk with flexibly adjustable inclination angle aiming at the current state of the art.

The second technical problem to be solved by the utility model is to provide a computer desk with a shelf structure aiming at the current state of the art.

The utility model solves the first technical problem by adopting the technical scheme that the shelf structure of the computer desk comprises:

A support base;

the shelf is rotationally connected to the supporting seat through a first rotating shaft;

The back of the shelf is provided with a positioning plate extending backwards, the positioning plate is provided with positioning concave parts which are sequentially arranged along the circumferential direction taking the first rotating shaft as the center, the supporting seat is provided with a positioning pin which can move along the direction parallel to the first rotating shaft, and the positioning pin is provided with a locking state which can be inserted into the positioning concave parts on the positioning plate to limit the rotation of the shelf relative to the supporting seat and an unlocking state which is separated from the positioning concave parts on the positioning plate to allow the rotation of the shelf relative to the supporting seat along with the change of the moving position of the positioning pin.

In order to be able to automatically lock after the angular adjustment of the shelf has been completed, it comprises an elastic element which acts on the positioning pin and which causes the latter to always have a tendency to move towards the side on which the positioning plate is located.

In order to ensure the stability of the rotation of the shelf, the supporting seat comprises a connector for connecting the shelf, the connector is provided with a movable groove for inserting the connector therein, the positioning plate forms the side wall of the movable groove, and the connector is provided with a mounting channel for placing the positioning pin and movably arranging the positioning pin therein, and the mounting channel penetrates through the side wall of the connector and is opposite to the positioning concave part on the positioning plate.

In order to ensure the locking firmness after the shelf rotation adjustment is finished, the connector is provided with a first side wall and a second side wall which are opposite left and right and vertically extend, the back surface of the shelf is provided with two positioning plates which are arranged at intervals, the two positioning plates are respectively opposite to the first side wall and the second side wall, the positioning pins are respectively provided with two left and right spaced arrangement, and the two positioning pins can be mutually far away and respectively penetrate out of the first side wall and the second side wall to be inserted into the positioning concave parts on the corresponding positioning plates and can be mutually close to be respectively separated from the positioning concave parts on the two positioning plates.

The elastic member may be various prior arts, and may include various elastic elements such as a compression spring, a torsion spring, a reed, etc., but in order to better match the positioning pin, the elastic member is a first spring, and two ends of the first spring are respectively abutted against the two positioning pins.

The unlocking operation of the positioning pin can be realized by applying force to the positioning pin in the axial direction to enable the positioning pin to axially move through a manual or electric control mode, but a corresponding operating handle or an electric driving device is needed to be added, and in order to reduce the number of parts and reduce cost, the matching structure between the end part of the positioning pin and the positioning concave part of the positioning plate is configured in such a way that when the shelf is acted on by external force to rotate around the first rotating shaft, the shelf can apply force to the positioning pin in the axial direction to overcome the elastic force of the elastic piece so as to enable the positioning pin to be separated from the positioning concave part.

As an improvement, the outer end part of the positioning pin is provided with a ball head structure with an outer convex cambered surface, and the inner wall surface of each positioning concave part on the positioning plate is provided with an inner concave cambered surface matched with the ball head structure of the positioning pin. By the structural design, after a user applies enough force in the angular rotation direction of the shelf, the ball head structure of the positioning pin can be separated from the positioning concave part on the positioning plate, so that the purpose of adjusting the angle of the shelf is realized.

In order to smoothly clamp the ball head structure of the positioning pin into the adjacent lower positioning concave part after the ball head structure of the positioning pin is separated from the positioning concave part on the positioning plate when the shelf is wrenched and adjusted, the two adjacent positioning concave parts on the positioning plate are communicated through the guide opening.

As another preferable scheme, in order to make the unlocking process of the positioning pin more labor-saving, the supporting seat is also provided with two operation handles which are respectively connected with the two positioning pins and can drive the positioning pins to move between the unlocking position and the locking position.

As an improvement, the positioning pin on the supporting seat is located below the first rotating shaft and is arranged adjacent to the first rotating shaft, the main body of the shelf is provided with an operation opening which is penetrated front and back, and the two operation handles are integrally rod-shaped and extend downwards to the back of the area where the operation opening is located, and can be seen from the front of the shelf through the operation opening. By means of the structural design, a user can directly operate the operation handle through the operation opening in the main body of the shelf, and the use experience of the user is improved.

As an improvement, the distance between the two operating handles is configured to be suitable for one-handed operation.

The elastic member may be any of various prior arts, and may include various elastic elements such as a compression spring, a torsion spring, a reed, etc., but in order to better match the operation handles, the elastic member is a second spring, which is disposed between the two operation handles, and makes the two operation handles always have a tendency to be far away from each other.

In order to adapt the two operation handles and install the second spring, the device further comprises a guide rod penetrating between the two operation handles along the left-right direction, the guide rod comprises a limiting convex edge protruding outwards in the middle part along the radial direction and two guide sections positioned at the left side and the right side of the limiting convex edge, and the two second springs are respectively sleeved on the two guide sections of the guide rod and propped between the limiting blocking edge and the corresponding operation handles.

In order to support the articles placed on the shelf at the bottom conveniently, such as computers, mobile phones, ipds, portable screens and the like, the bottom of the shelf is also provided with a supporting hook which extends forwards and is folded upwards.

In order to avoid the goods placed on the shelf from toppling forward, the top of the shelf is also provided with an anti-falling strip which is positioned at the front side of the shelf and extends along the left-right direction, the side walls at the left side and the right side of the shelf are provided with jacks, and the left end and the right end of the anti-falling strip are arranged in the two jacks on the shelf in a penetrating way.

The technical scheme adopted by the utility model for solving the second technical problem is that the computer desk comprises a supporting seat and a shelf connected to the supporting seat, wherein the shelf adopts the shelf structure of the computer desk.

In order to facilitate the placement of other articles by a user, the novel multifunctional desk comprises a desk plate assembly, wherein the supporting seat comprises a seat body and an upright post extending upwards from the seat body, the shelf is connected to the top of the upright post in a rotationally adjustable mode, and the desk plate assembly is connected to the lower portion of the upright post.

Compared with the prior art, the computer desk has the advantages that the inclination angle of the shelf can be conveniently adjusted adaptively according to the use requirement of a user and the gesture of the user, the use experience of the user is improved, after the angle adjustment of the shelf is finished, the positioning pins on the supporting seat can be correspondingly clamped into the corresponding positioning concave parts on the positioning plate of the shelf, the shelf is firmly fixed relative to the supporting seat, and the stability of the shelf after the angle adjustment is ensured.

Drawings

Fig. 1 is a schematic perspective view of a computer desk according to embodiment 1 of the present utility model;

fig. 2 is a right side view of the computer desk of embodiment 1 of the present utility model;

Fig. 3 is a partially exploded view of a computer desk according to embodiment 1 of the present utility model;

Fig. 4 is a schematic perspective view of a supporting seat assembly according to embodiment 1 of the present utility model;

Fig. 5 is a vertical sectional view of a computer desk according to embodiment 1 of the present utility model;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is an exploded view of a support base assembly according to embodiment 1 of the present utility model;

fig. 8 is a schematic perspective view of a desk board assembly according to embodiment 1 of the present utility model;

Figure 9 is a vertical cross-sectional view of a table assembly according to embodiment 1 of the utility model;

fig. 10 is a schematic view of a perspective view of the back of a table assembly according to embodiment 1 of the present utility model;

Fig. 11 is a schematic perspective view showing a separation state of a shelf and a support base according to embodiment 1 of the present utility model;

fig. 12 is a sectional view showing a state in which a shelf and a support base of embodiment 1 of the present utility model are connected;

fig. 13 is a schematic perspective view of a connector of a supporting seat according to embodiment 1 of the present utility model;

fig. 14 is a schematic perspective view showing the rear view of the shelf in embodiment 1 of the present utility model;

Fig. 15 is a schematic perspective view showing a structure in which a support rod of the computer desk of embodiment 1 of the present utility model is in a retracted state;

fig. 16 is a schematic perspective view showing a connection state of a shelf and a support base according to embodiment 2 of the present utility model;

Fig. 17 is a schematic view showing a perspective structure of a shelf and a supporting seat in another angle in a connection state of the shelf and the supporting seat according to embodiment 2 of the present utility model;

Fig. 18 is a schematic perspective view showing a separation state of a shelf and a support base according to embodiment 2 of the present utility model;

fig. 19 is a schematic perspective view of a connector of a supporting seat according to embodiment 2 of the present utility model;

Fig. 20 is an exploded view of the connector of the supporting seat of embodiment 2 of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Example 1

Figures 1-15 illustrate a preferred embodiment of the computer desk of the present utility model. The lifting table comprises a shelf 1, a table plate assembly 3, a supporting seat assembly, a handle 26, a driving rod 24 and a supporting rod assembly. The supporting rod component is connected to the bottom of the supporting seat component to play a supporting role. The desk plate assembly 3 is arranged on the supporting seat assembly, and the shelf 1 is connected to the top of the supporting seat assembly, namely, the position of the shelf 1 is higher than that of the desk plate assembly 3. The shelf 1 can be used for placing articles such as a computer, an ipad, a mobile phone and the like, and the desk board assembly 3 can be used for correspondingly placing articles such as a keyboard, a mouse and the like. Of course, the shelf 1 may not be used for placing articles, and a notebook computer may be placed on the desk assembly 3.

The support base assembly comprises a support base 2 and a connecting frame 5 connected to the support base 2. The support base 2 includes a base body 21 and a column 22 extending upward from the top of the base body 21. The support bar assembly is attached to the bottom of the seat body 21. The upright post 22 of the supporting seat 2 is provided with a connecting frame 5, and the desk plate assembly 3 is detachably connected to the connecting frame 5. The connecting frame 5 comprises a sleeve body 51 and a vertical plate 52 extending downwards from the side part of the sleeve body 51, wherein the sleeve body 51 is sleeved outside the vertical column 22 of the supporting seat 2 and is fixed by a fastener. The bottom edge of the upright plate 52 is provided with a folded edge which is folded towards the side far away from the table plate (namely towards the side close to the upright post 22), the folded edge is provided with a limit notch 520 which is recessed towards the side far away from the upright post 22 and used for limiting the upright post 22, and the shape of the limit notch 520 is matched with the outer wall of the upright post 22. After the connecting frame 5 is installed in place, the folded edge at the bottom of the vertical plate 52 abuts against the outer wall of the upright post 22, and is limited by the limiting notch 520, so that the installation firmness between the connecting frame 5 and the upright post 22 is ensured. Referring to fig. 4, the upright plate 52 is further provided with a connecting hole 521 for connecting with the table assembly 3, and the connecting holes 521 may be arranged in two side-by-side manners, where each connecting hole 521 includes a large hole portion 5211 and a small hole portion 5212 that are sequentially arranged from top to bottom and are communicated with each other. The side of the desk board assembly 3 is connected with a bolt 35, the head of the bolt 35 can extend from the large hole 5211 to the back of the connecting frame 5, and after the bolt moves down to the set position, the bolt and the back of the periphery of the small hole 5212 form limit in the axial direction of the bolt 35. In the process of disassembly, the desk plate assembly 3 is moved up to a position where the head of the bolt 35 is opposite to the large hole 5211 of the connecting hole 521, and then is moved out of the large hole 5211, so that the disassembly can be completed.

Figures 8-10 show the construction of the table top assembly 3 of this embodiment. The table assembly 3 comprises at least two tables arranged in sequence in a first direction L1, the two adjacent tables being denoted as a first table 31 and a second table 32, respectively. The first table plate 31 and the second table plate 32 are rotatably connected in the adjacent joint area, and the first table plate 31 and the second table plate 32 are relatively unfolded along with the change of the relative positions of the first table plate 31 and the second table plate 32 to form an open state of the complete table plate and a folded state of the complete table plate which are relatively folded and stacked together. In the folded state, the top surface of the first table 31 is attached to the top surface of the second table 32.

The bottoms of the first table plate 31 and the second table plate 32 are fixedly connected through a connecting pin shaft 333. Specifically, the bottom of the first table 31 has a first protruding block 331 protruding downward, the first protruding block 331 is provided with a first mounting hole 3310 extending along a first direction, the bottom of the second table 32 has a second protruding block 332 protruding downward, the second protruding block 332 is provided with a second mounting hole 3320 extending along a first direction L1, and when the first table 31 and the second table 32 are in an open state, the first mounting hole 3310 is opposite to the second mounting hole 3320. The first mounting hole 3310 of the first protruding block 331 is provided with a connecting pin 333 that is slidable along the length direction thereof, wherein the connecting pin 333 can be inserted into the second mounting hole 3320 to limit the first protruding block 331 and the second protruding block 332, so that the first table 31 and the second table 32 cannot rotate. After the connecting pin 333 is disengaged from the second mounting hole 3320, the limit between the first protrusion 331 and the second protrusion 332 can be released, allowing the table board and the second table board 32 to be rotated and folded.

The two first protrusions 331 at the bottom of the first table 31 are arranged at intervals along the second direction, and specifically are centrally disposed in a middle area of the first table 31 in the length direction (i.e., the second direction L2 is perpendicular to the first direction L1). Similarly, there are two second protrusions 332 at the bottom of the second table 32, which are spaced apart along the second direction, and specifically, are centrally disposed in a middle region of the second table 32 along the length direction (i.e., the second direction). The two first protruding blocks 331 of the first table 31 and the two second protruding blocks 332 of the second table 32 are limited by the two connecting pin shafts 333, so that stability of the table assembly 3 in an open state is further ensured.

In general, the connection pins 333 may be installed from the ports of the corresponding installation channels, but considering that the connection pins themselves have a certain length, a sufficient space for allowing the connection pins to be placed at the ports of the installation channels is required, and furthermore, in order to better satisfy the use habit of the user for directly installing the connection pins from the bottom, in a preferred embodiment, an installation opening 3311 penetrating the first installation channel 3310 for installing the connection pins 333 into the first installation channel 3310 and removing the connection pins from the first installation channel 3310 is further provided on the bottom wall of the first protrusion 331.

Both sides of the first table 31 and the second table 32 in the length direction extend in the second direction. The side edge of the first table 31, which is connected with the second table 32, is provided with a first folded edge 311 which is turned downwards, and the side edge of the first table 31, which is far away from the second table 32, is provided with a third folded edge 312 which is turned downwards. The second table 32 has a second fold 321 turned down at the side that meets the first table 31 and a fourth fold 322 turned down at the side that is remote from the first table 31. The first protrusion 331 at the bottom of the first table 31 is connected to the first flange 311, and the first mounting hole 3310 extends through the first flange 311, i.e. a corresponding port is formed on the sidewall of the corresponding first flange 311. The second protrusion 332 at the bottom of the second table 32 is connected to the second flange 321, and the second mounting hole 3320 penetrates the second flange 321, i.e. a corresponding port is formed on the sidewall of the corresponding second flange 321. When the first table 31 and the second table 32 are in the open state, the first folded edge 311 is attached to the second folded edge 321, and the port of the first folded edge 311, which is connected to the first mounting hole 3310, is opposite to the port of the second folded edge 321, which is connected to the second mounting hole 3320.

In order to reduce the production cost, in a preferred embodiment of the present embodiment, two adjacent desktops are designed to have the same structure, that is, each of the bottoms of the desktops (the first desk top 31 and the second desk top 32 described above) has a first protrusion 331 and a second protrusion 332, where the first protrusion 331 and the second protrusion 332 on each of the desktops are spaced apart in the first direction. Specifically, the second protrusion 332 at the bottom of the first table 31 is connected to the third folded edge 312, and the second mounting hole 3320 on the second protrusion 332 extends through to the third folded edge 312 of the first table 31. Similarly, the first protrusion 331 at the bottom of the second table 32 is connected to the fourth flange 322, and the first mounting hole 3310 on the first protrusion 331 extends through to the fourth flange 322 of the second table 32. Since the first table 31 and the second table 32 have the same structure, the first folded edge 311 of the first table 31 may be understood as being identical to the fourth folded edge 322 of the second table 32, and the third folded edge 312 of the first table 31 may be understood as being identical to the second folded edge 321 of the second table 32. The length dimensions of the first folded edge 311 and the third folded edge 312 of the first table 31 extending downward are gradually reduced from the middle part of the first table 31 in the length direction to the left and right sides, and similarly, the length dimensions of the second folded edge 321 and the fourth folded edge 322 of the second table 32 extending downward are also gradually reduced from the middle part of the second table 32 in the length direction to the left and right sides. In order to further increase the strength of the table assembly 3, the bottom portion of the first table 31 is further provided with a first reinforcing rib 313 extending in the first direction in a region between the first fold 311 and the third fold 312, and the bottom portion of the second table 32 is further provided with a second reinforcing rib 323 extending in the first direction in a region between the second fold 321 and the fourth fold 322.

Fig. 10 shows a structure in which the side portion of the first table 31 of the table assembly 3 is coupled to the connection frame 5 of the support base 2 by bolts 35. Specifically, there are two bolts 35, each bolt 35 is limited by a nut after passing through the second mounting channel 2203 of the second protrusion 332 at the bottom of the first table 31, and the head of the bolt 35 is spaced from the third folded edge 312 of the first table 31, so that the head of the bolt 35 can move down through the large hole portion 5211 of the connection hole 521 and be blocked into the small hole portion 5212 on the vertical plate 52 of the connection frame 5.

Referring to fig. 8, the first table 31 and the second table 32 of the present embodiment are rotatably connected at the adjacent areas thereof by a flexible patch 34 attached to the top surfaces thereof. The "flexible patch 34" refers to a patch structure that can be folded and bent under the action of external force, and the flexible patch 34 enables two objects that are spliced to deflect relatively to form a certain angle. In general, the flexible patch 34 may be provided with only a section covering a portion of the splice seam, or may be provided with multiple sections sequentially spaced apart along the length direction of the splice seam, or may be provided with a complete one along the length direction of the splice seam to completely cover the splice seam, and in a preferred embodiment, to ensure the aesthetics of the table, the flexible patch 34 covers the splice seam along the entire patch extending along the length direction of the splice seam between the first table 31 and the second table 32. The flexible patch 34 may be a patch made of nylon carbon fiber, rubber or silica gel, and the flexible patch 34 is connected to the top surface of the adjacent area of the first table 31 and the second table 32 by means of adhesion.

Referring to fig. 11 to 14, the top of the upright 22 of the support base 2 is a connector 220 for connection with the shelf 1. The connector 220 includes first and second side walls 2201, 2202 that are opposite from each other in the left and right directions and each extend vertically. The top of the back of the shelf 1 is rotatably connected to the connector 220 via the first rotation shaft 15 extending from left to right, specifically, the back of the shelf 1 has two positioning plates 11 disposed at left and right intervals and extending rearward, the first rotation shaft 15 penetrates through the first side wall 2201 and the second side wall 2202 of the connector 220 in the left and right directions, and two ends are respectively connected to the two positioning plates 11. The two positioning plates 11 together define a movable slot 112 into which the connector 220 is inserted and can deflect vertically, and opposite side walls of the two positioning plates 11 form two inner side walls of the movable slot 112, and the two inner side walls are correspondingly attached to the first side wall 2201 and the second side wall 2202 of the connector 220.

The positioning recesses 110 are provided on the opposite side walls of the two positioning plates 11 in order along the circumferential direction centering around the first rotation shaft 15, and the "positioning recesses 110" may generally refer to areas recessed with respect to the side wall surfaces of the positioning plates 11, such as structures of pits, grooves, or the like, or through-hole structures penetrating to the other wall surface of the positioning plates 11, and the positioning recesses 110 in this embodiment show pit structures formed on the positioning plates 11.

The connector 220 of the supporting seat 2 is further provided with a positioning pin 221 capable of moving along a direction parallel to the first rotating shaft 15, and the positioning pin 221 is located below the first rotating shaft 15 and is arranged adjacent to the first rotating shaft 15. Specifically, the connector 220 has a mounting channel 2203 extending from left to right, the two positioning pins 221 are preferably disposed in the mounting channel 2203 at intervals along the left-right direction, wherein the two positioning pins 221 are far away from each other and can correspondingly pass through the first side wall 2201 and the second side wall 2202 of the connector 220, and correspondingly clip into the positioning concave portions 110 of the two positioning plates 11 to limit the rotation of the shelf 1 relative to the supporting seat 2, which is a locking state, and the two positioning pins 221 can also be far away from each other and release from the positioning concave portions 110 of the corresponding two positioning plates 11 to release the locking of the shelf 1 and the supporting seat 2, which is an unlocking state.

In the preferred embodiment, the elastic member is a first spring 231, and the left and right ends of the first spring 231 respectively abut against the two positioning pins 221, so that the two positioning pins 221 always have a tendency to move toward the corresponding positioning plate 11. More specifically, the positioning pin 221 is designed into a non-constant diameter pin shaft structure with a small outer diameter and a large inner diameter, a step 2101 is correspondingly formed on the outer peripheral wall of the positioning pin 221, a step hole is correspondingly formed on the inner wall of the mounting channel 2203 of the connector 220, and the step hole cooperates with the step 2101 of the positioning pin 221 to limit the positioning pin 221 from completely falling out of the mounting channel 2203.

Referring to fig. 13 and 14, the engaging structure between the end of the positioning pin 221 and the positioning recess 110 of the positioning plate 11 of the present embodiment is configured such that when the shelf 1 is rotated about the first rotation axis 15 by an external force, the shelf 1 can apply a force to the positioning pin 221 in the axial direction to disengage the positioning pin 221 from the positioning recess 110 against the elastic force of the elastic member. In the preferred embodiment, the outer end of the positioning pin 221 is provided with a ball head structure 2210 having an outer convex arc surface, and the inner wall surface of each positioning concave portion 110 on the positioning plate 11 is provided with an inner concave arc surface adapted to the ball head structure 2210 of the positioning pin 221. The ball head structure 2210 of the positioning pin 221 and the concave cambered surface matching structure of the positioning plate 11 have a certain guiding function, so that after a user applies enough force in the angular rotation direction of the shelf 1, the positioning pin 221 can retract against the elastic force of the first spring 231 under the action of the concave cambered surface of the positioning plate 11, thereby the ball head structure 2210 of the positioning pin 221 can be smoothly separated from the positioning concave part 110 on the positioning plate 11, and the purpose of adjusting the angle of the shelf 1 is realized. In order to smoothly insert the ball head structure 2210 of the positioning pin 221 into the adjacent next positioning concave portion 110 after the ball head structure 2210 of the positioning pin 221 is separated from the positioning concave portion 110 on the positioning plate 11 when the shelf 1 is pulled and adjusted, two adjacent positioning concave portions 110 on the positioning plate 11 of the embodiment are communicated through the guiding opening 111, and the guiding opening 111 is provided with a smooth transition contour line or curved surface.

Two positioning plates 11 on the shelf 1 are located at positions near the top on the back of the shelf 1, whereby a user can pull the lower part of the shelf 1 to adjust the angle.

The bottom of the shelf 1 is also provided with a supporting hook 13 which extends forwards and turns upwards, and the supporting hook 13 can be provided with two supporting hooks which are arranged at intervals left and right. The hook 13 can conveniently support articles placed on the shelf 1, such as computers, mobile phones, ipds, portable screens and the like, at the bottom. On the other hand, in order to avoid that the articles placed on the shelf 1 topple forward, the top of the shelf 1 is further provided with a drop-preventing strip 14 which is positioned at the front side of the shelf 1 and extends along the left-right direction, the left-right side wall of the shelf 1 is provided with insertion holes, and the left-right ends of the drop-preventing strip 14 are arranged in the two insertion holes on the shelf 1 in a penetrating manner. When the article is placed, the article may be placed between the falling off prevention bar 14 and the front sidewall of the shelf 1. The anti-drop strip 14 may be a rope strip with a certain elasticity, such as rubber rope or rubber band, or may be a metal strip (such as stainless steel) or plastic strip with a certain strength and inextensibility.

The support base 2 defines therein a vertically extending movable channel 210 and a movable chamber 211 communicating with a lower port of the movable channel 210, specifically, the base body 21 of the support base 2 correspondingly forms the movable chamber 211, and the upright post 22 of the support base 2 is hollow to form the movable channel 210. The handle 26 is configured to be movably coupled to the upright 22 of the support base 2, and the driving rod 24 is movably disposed in the movable passage 210 up and down, the lower end of the driving rod 24 extends into the movable chamber 211, and the driving rod 24 is coupled to the handle 26 and is driven to move down by the handle 26. Specifically, the upright 22 has a transmission shaft 252 that transversely penetrates the movable channel 210, and an end of the transmission shaft 252 penetrates the upright 22 to be connected with the handle 26, and the handle 26 is pulled up and down to drive the transmission shaft 252 to rotate around the axis thereof. A cam 251 is also arranged in the movable channel 210, and the cam 251 is sleeved on the transmission shaft 252 and can rotate along with the transmission shaft 252. The upper end of the driving lever 24 abuts against the outer wall surface (i.e., the eccentric contour curved surface) of the cam 251, and when the cam 251 rotates, the cam 251 can drive the driving lever 24 to move downward.

The movable channel 210 of the upright 22 is also provided with an elastic member which acts on the driving rod 24 and causes the driving rod 24 to always have a tendency to move up the movable channel 210. Specifically, the inner wall of the movable channel 210 defines a step portion 2101 with a large upper portion and a small lower portion, the outer peripheral wall of the driving rod 24 is provided with a limit protrusion 2410 protruding radially outwards, the elastic member may employ a third spring 27, the third spring 27 is sleeved outside the driving rod 24, the upper end of the third spring 27 abuts against the limit protrusion 2410 of the driving rod 24, and the lower end of the third spring abuts against the step portion 2101 of the movable channel 210. When the handle 26 is not operated or released, the driving rod 24 can automatically move upwards under the action of the third spring 27, namely away from the operation part of the support rod 4, so as to achieve the purpose of automatically locking the support rod 4 (the length cannot be adjusted).

The base body 21 of the supporting base 2 is fixedly connected with the bottom of the upright post 22 through the sealing head 211, and a through hole for the driving rod 24 to pass through is correspondingly formed in the sealing head 211. The upper end of the through hole of the cap 211 forms the step 2101.

The driving lever 24 includes a lever body 241, and a driving block 242 connected to a lower end of the lever body 241, the driving block 242 being screw-coupled with the lever body 241. The transmission block 242 is located in the movable chamber 211 of the seat body 21. To facilitate the installation of the driving block 242 and the connection between the seat body 21 and the upright 22, the bottom of the seat body 21 has an opening and a bottom cover 210 covering the opening.

The support rod assembly includes at least one length-telescopically adjustable support rod 4, as shown in fig. 1, the present embodiment shows 3 support rods 4. Each support rod 4 comprises a locking assembly and an operating part which is arranged at the upper end of the support rod 4 and used for controlling the locking assembly to switch between a locking state and an unlocking state, the length of the support rod 4 is not telescopically adjustable when the locking assembly is in the locking state, and the length of the support rod 4 can be telescopically adjustable when the locking assembly is in the unlocking state. The upper end of the support rod 4 is connected with the support seat 2 and extends into the movable chamber 211. The operating part of the upper end part of the support rod 4 is matched with the driving rod 24, wherein the driving rod 24 moves downwards to press the operating part to unlock the locking assembly, and the driving rod 24 moves upwards to release the pressing state of the operating part to lock the locking assembly.

The support rod 4 with a locking device inside and outside the support rod and capable of unlocking and locking at the end generally comprises an outer tube 42 and an inner tube 41 which are sleeved inside and outside the support rod and capable of relatively moving in the length direction, a locking assembly is arranged in the inner tube 41, the locking assembly is configured to lock the outer tube 42 and the inner tube 41 in a locked state and not to enable the outer tube 42 and the inner tube 41 to relatively move in the length direction, and the locking device of the support rod 4 in the embodiment can adopt a locking mechanism in a locking mechanism, a support rod assembly and a support device with the application number of CN201621304135.8 (authorized bulletin number of CN 206386351U), and the structure and the operation process of the locking mechanism are all of the prior art and are not repeated herein.

Referring to fig. 7, in order to achieve synchronous unlocking of the support rods 4, the transmission block 242 of the present embodiment is a disk structure with a middle portion protruding downward, the bottom surface of the disk structure is configured as a concave curved surface 2420 that gradually and upwardly concave from the middle portion to the outer periphery thereof, and the upper ends of the three support rods 4 of the support rod assembly are sequentially arranged along the circumferential direction of the disk respectively and correspondingly abut against the concave curved surface 2420 at the bottom of the transmission block 242. The transmission block 242 has three pressing arms 2421 extending outwards from the middle, the bottom surface of each pressing arm 2421 forms the concave curved surface 2420, and the upper ends of the supporting rods 4 respectively abut against the concave curved surfaces 2420 of the pressing arms 2421. It is conceivable that the transmission block can also be designed as a complete disk without notches or recesses in the circumferential direction. The above-mentioned disk body structural design with concave curved surface 2420, it can realize contacting or breaking away from with the upper end of each bracing piece 4 in step when reciprocating, guarantee that each bracing piece 4 can realize synchronous unblock or locking.

The movable chamber 211 of the support seat 2 comprises at least two sub-chambers 2110 which are sequentially arranged along the circumferential direction, and the bottom of the support seat 2 is also provided with a movable opening 2111 which extends along the radial direction in the area corresponding to each movable groove 112. The upper ends of the support rods 4 penetrate through the movable ports 2111 and extend into the corresponding sub-chambers 2110, the upper ends of the support rods 4 are rotatably connected to the support base 2 through the second rotating shafts 40, the extending directions of the second rotating shafts 40 are consistent with the width directions of the movable ports 2111, namely, the extending lines of the three second rotating shafts 40 form a triangle on the horizontal plane correspondingly. When the three support rods 4 rotate relative to the support base 2, the lower ends of the support rods 4 are relatively close to each other to be folded together, and the lower ends of the support rods 4 are relatively far away from each other to be unfolded. In the collapsed position, the three support rods 4 are brought together to form a relatively "thicker" rod body which occupies a much smaller space than the support rod assembly in the expanded position. In the unfolded state, a triangular supporting structure is formed, and the supporting seat 2 is supported by three rods at the bottom, so that the support seat is more firm and stable.

In order to facilitate the cooperation with the transmission block 242, the upper end of each supporting rod 4 is further provided with an arc-shaped sheet body 44 matched with the concave curved surface 2420 of the transmission block 242, a first end, adjacent to the middle position of the transmission block 242, of the arc-shaped sheet body 44 is rotatably connected to the main body of the supporting rod 4, a second end, adjacent to the edge position of the transmission block 242, of the arc-shaped sheet body 44 is abutted to the concave curved surface 2420 of the pressing arm of the transmission block 242, specifically, the top of the second end of the arc-shaped sheet body 44 (i.e. the side facing the transmission block 242) is further provided with a roller 441 capable of freely rolling relative to the arc-shaped sheet body 44, therefore, rolling friction is formed between the annular sheet body and the pressing arm of the transmission block 242 through the roller 441, friction force is smaller, and when the transmission block 242 moves up and down, the rotation of the arc-shaped sheet body 44 is more flexible, and reliability of the unlocking and locking process of the supporting rod 4 is ensured. The bottom of the arc-shaped sheet body 44 (i.e., the side facing the main body of the support rod 4) has an inner concave portion 440, and an operation rod capable of moving along the length direction is provided in the support rod 4, and the end portion of the operation rod extends out of the upper end of the support rod 4 and abuts against the inner concave portion 440 of the arc-shaped sheet body 44. The action of the operation rod in the embodiment is the same as that of a linkage rod in a locking mechanism, a support rod assembly and a support device of the application number CN 201621304135.8.

When the lifting table is not needed, the support rods 4 are shortened to a relatively short length, then the lower ends of the support rods 4 are relatively close to each other to be folded together, and after the support rods 4 are folded, the occupied volume is small, so that the lifting table can be stored or carried more conveniently.

Example 2

Figures 16-20 illustrate another preferred embodiment of the computer desk of the present utility model. The difference between this embodiment and embodiment 1 is that the angle adjustment mating structure between the shelf 1 and the connector 220 of the support base 2 is different. Specifically, in the present embodiment, two operation handles 222 that are respectively connected to the two positioning pins 221 and can drive the positioning pins 221 to move between the unlocked position and the locked position are further provided on the supporting base 2, and correspondingly, the positioning recess 110 on the positioning plate 11 of the shelf 1 may correspondingly adopt a through hole structure penetrating to the outer wall surface of the positioning plate 11, and of course, a pit structure may also be adopted as in embodiment 1.

Referring to fig. 19, the operating handle 222 is generally rod-shaped and extends downward. The connector 220 is located in the lower region of the mounting channel 2203, and is correspondingly provided with a yielding port, and the operating handle 222 is connected with the inner end of the corresponding positioning pin 221 through the yielding port. Since the operation handle 222 is connected to the positioning pin 221, the operation handle 222 can also function as a stopper, and therefore, the positioning pin 221 of the present embodiment does not have to be designed as a stepped shaft as in embodiment 1, and a conventional constant diameter pin shaft may be used. Likewise, the outer end of the locating pin 221 need not be designed as a male ball feature 2210.

The main body of the shelf 1 is provided with an operation opening 10 which penetrates through the front and the back, and two operation handles 222 extend downwards to the back of the area where the operation opening 10 is located, and can be seen from the front of the shelf 1 through the operation opening 10. Thus, the user can directly pass the hand through the operation opening 10 on the main body of the shelf 1 to operate the operation handle 222, and the use experience of the user is improved. In a preferred embodiment, two operating handles 222 are arranged adjacent, in particular, the distance between the two is configured to be suitable for one-handed operation.

The elastic member of the present embodiment is a second spring 232, and the second spring 232 is disposed between the two operation handles 222, so that the two operation handles 222 always have a tendency to be away from each other. A guide rod 12 is arranged between the two operation handles 222, and through holes which extend leftwards and rightwards and are used for the guide rods to pass through are correspondingly formed in the two operation handles 222. The guide rod 12 includes a limit ledge 121 protruding radially outward in the middle and two guide sections 122 located on the left and right sides of the limit ledge 121, the two guide sections 122 being respectively penetrated in through holes of the two operating handles 222. The two second springs 232 are respectively sleeved on the two guide sections 122 of the guide rod 12 and are abutted between the limiting stop edge and the corresponding operation handle 222.

In order to facilitate the installation of the positioning pin 221, the operating handle 222 and other components, the front side wall of the connector 220 of the supporting seat 2 is provided with an opening penetrating the installation channel 2203, and the opening is connected with the cover plate 2204 through a screw. After the assembly of the positioning pin 221 and other components is completed, the cover plate 2204 can be used for closing and limiting, so that the positioning pin 221 is prevented from falling out from the front opening.

Claims (17)

1. A shelf structure of a computer desk, comprising:

a support base (2);

The shelf (1) is rotationally connected to the supporting seat (2) through a first rotating shaft (15);

The novel shelf is characterized in that a positioning plate (11) extending backwards is arranged on the back surface of the shelf (1), positioning concave parts (110) which are sequentially arranged along the circumferential direction taking the first rotating shaft (15) as the center are arranged on the positioning plate (11), positioning pins (221) which can move along the direction parallel to the first rotating shaft (15) are arranged on the supporting seat (2), and the positioning pins (221) can be inserted into the positioning concave parts (110) on the positioning plate (11) along with the change of the moving positions of the positioning pins, so that the shelf (1) is limited to rotate relative to the supporting seat (2) and is unlocked from the positioning concave parts (110) on the positioning plate (11) so as to allow the shelf (1) to rotate relative to the supporting seat (2).

2. The structure of claim 1, further comprising an elastic member acting on said positioning pin (221) and making said positioning pin (221) always have a tendency to move toward the side where said positioning plate (11) is located.

3. The structure of claim 2, wherein the support base (2) includes a connector (220) for connecting the shelf (1), the connector (220) has a movable slot (112) into which the connector (220) is inserted, the positioning plate (11) forms a side wall of the movable slot (112), the connector (220) has a mounting channel (2203) for placing the positioning pin (221) therein and for the positioning pin (221) to be movably disposed therein, and the mounting channel (2203) penetrates through the side wall of the connector (220) and is opposite to the positioning recess (110) on the positioning plate (11).

4. The structure of claim 3, wherein the connector (220) has a first side wall (2201) and a second side wall (2202) opposite to each other in a left-right direction and extending vertically, two positioning plates (11) disposed at intervals are disposed on the back of the shelf (1), the movable slot (112) is defined between the two positioning plates (11), the two positioning plates (11) are respectively opposite to the first side wall (2201) and the second side wall (2202), the two positioning pins (221) are respectively disposed at intervals in a left-right direction, and the two positioning pins (221) can be separated from each other and respectively pass through the first side wall (2201) and the second side wall (2202) to be inserted into the positioning concave portions (110) on the corresponding positioning plates (11) and can be moved close to each other and respectively separated from the positioning concave portions (110) on the two positioning plates (11).

5. The structure of claim 2 to 4, wherein the elastic member is a first spring (231), and two ends of the first spring (231) are respectively abutted against two positioning pins (221).

6. The structure of claim 2 to 4, wherein the engagement structure between the end of the positioning pin (221) and the positioning recess (110) of the positioning plate (11) is configured such that when the shelf (1) rotates around the first rotation axis (15) under the action of an external force, the shelf (1) can apply a force to the positioning pin (221) in an axial direction to overcome the elastic force of the elastic member, so that the positioning pin (221) is disengaged from the positioning recess (110).

7. The structure of claim 6, wherein the outer end of the positioning pin (221) is a ball head structure (2210) with a convex arc surface, and the inner wall surface of each positioning concave part (110) on the positioning plate (11) is a concave arc surface matched with the ball head structure (2210) of the positioning pin (221).

8. The structure of claim 7, wherein two adjacent positioning recesses (110) of the positioning plate (11) are communicated with each other through a guide opening (111).

9. The structure of claim 4, wherein the support base (2) further comprises two operating handles (222) which are respectively connected with the two positioning pins (221) and can drive the positioning pins (221) to move between the unlocking position and the locking position.

10. The structure of claim 9, wherein the positioning pin (221) of the supporting seat (2) is located below the first rotating shaft (15) and is disposed adjacent to the first rotating shaft (15), the main body of the shelf (1) is provided with a front-back through operation opening (10), and the two operation handles (222) are integrally rod-shaped and extend downwards to the back of the area where the operation opening (10) is located, and can be seen from the front of the shelf (1) through the operation opening (10).

11. The computer desk shelf structure as claimed in claim 10, wherein the distance between two operating handles (222) is configured to be suitable for one-handed operation.

12. The structure of claim 9, wherein the elastic member is a second spring (232), and the second spring (232) is disposed between the two operating handles (222) such that the two operating handles (222) always have a tendency to move away from each other.

13. The structure of claim 12, further comprising a guide bar (12) passing between the two operating handles (222) along a left-right direction, wherein the guide bar (12) includes a limiting flange (121) protruding radially outwards in the middle and two guide sections (122) located at left and right sides of the limiting flange (121), and the two second springs (232) are respectively sleeved on the two guide sections (122) of the guide bar (12) and are abutted between the limiting flange and the corresponding operating handle (222).

14. The structure of any one of claims 1 to 4, wherein the bottom of the shelf (1) further comprises a hook (13) extending forward and turned upward.

15. The structure of claim 1 to 4, wherein the top of the shelf (1) is further provided with a release preventing strip (14) located at the front side of the shelf (1) and extending in the left-right direction, the left side wall and the right side wall of the shelf (1) are provided with insertion holes, and the left end and the right end of the release preventing strip (14) are arranged in the two insertion holes of the shelf (1) in a penetrating manner.

16. A computer desk comprises a supporting seat (2) and a shelf (1) connected to the supporting seat (2), and is characterized in that the shelf (1) adopts the shelf structure of the computer desk according to any one of claims 1-15.

17. The computer desk of claim 16 further comprising a desk board assembly, wherein the supporting seat (2) comprises a seat body (21) and a stand column (22) extending upwards from the seat body (21), the shelf (1) is connected to the top of the stand column (22) in a rotationally adjustable manner, and the desk board assembly is connected to the lower part of the stand column (22).