CN202312052U - Desktop opening type school desk - Google Patents

Abstract

The utility model relates to an open desk with a desktop, which comprises a table leg, a table belly and a table top, and a plurality of cranks with equal length and parallel to each other are arranged between the table belly and the table top, and the two ends of the crank are pivotally connected to the table belly respectively. and the table top; the table legs and the table belly are connected by height-adjustable bolts, and the table top and the table belly are also provided with an angle adjustment device. The utility model is convenient for taking and placing books on the table top under the condition that articles are placed on it, which can greatly reduce the tediousness of taking books when studying at the student table, improve the learning efficiency, and greatly increase the usable area of the table top.

Description

desktop open desk

technical field

The utility model relates to a desk or a desk, in particular to a desk whose desktop can be opened.

Background technique

Traditional desks usually have a one-piece structure. Textbooks and learning materials are stacked on the table. After checking, there is no place to store them. There are also some desks on the market that can be opened to facilitate users to take out the learning materials in the desk. , the openable desktop part is usually pivotally connected with other parts of the desk, and the desktop can be turned up during use. However, in the process of picking up books, the items placed on the desktop are easy to slip, so the desktop needs to be cleaned in advance, which brings inconvenience to the user, so the practicability is limited.

Contents of the invention

The utility model provides an improved desk with an open desk, which is convenient for taking and placing books on the desk when objects are placed on the desk. The usable area of the desktop is greatly improved.

The technical solution adopted by the utility model for achieving the above purpose is: an open desktop desk, including table legs, a table belly and a table top, and a plurality of cranks with equal length and parallel to each other are set between the table belly and the table top, and the cranks The two ends of the table are respectively pivotally connected to the table belly and the table top.

Further, a plurality of racks are fixed under the desktop, and the top ends of the cranks are respectively pivotally connected to the racks.

Further, the desktop open desk also includes: a ratchet, a switch block and a spring; the top of at least one crank forms a ratchet, and the center of the ratchet is pivotally connected to the frame; the ratchet is located on the side of the ratchet, and the ratchet The middle part is also pivotally connected to the frame, and one end of the pawl has teeth that mesh with the ratchet teeth of the ratchet, and the other end of the pawl is pivotally connected to the switch block; the top of the switch block has bumps and steps, and the upper end of the spring is fixed on Below the desktop, the lower end of the spring abuts against the step on the top of the switch block; the ratchet teeth of the ratchet and the occlusal teeth of the pawl form a self-locking device in the direction of closing the desktop.

Furthermore, the mating surfaces of the ratchet and the snapping teeth facing the opening direction of the desktop have inclined or parabolic structures that can be pushed away from each other, while the mating surfaces of the ratchets and the snapping teeth facing the closing direction of the desktop have a planar structure that locks each other.

Furthermore, the table legs and the table body are connected in a separate way, wherein the bottom of the table body and the upper part of the table legs are respectively provided with several screw holes with different heights, and the table legs are fixedly connected to the table body through the bolts.

The utility model has the following advantages:

(1) The overall structure is simple, easy to manufacture and flexible to use.

(2) Change the opening method of the traditional desktop so that the desktop is always kept parallel to the ground to prevent items on the table from slipping.

(3) After flipping to a certain angle, simple self-locking is realized through the ratchet and ratchet structure, and the desktop can be fixed to any desired position, ensuring the stability of the desktop at various positions and improving the bearing capacity of the desktop.

(4) The height of the desk can be adjusted to meet the height requirements of different users.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the structural representation of angle adjusting device;

Fig. 4 is a partially enlarged view in Fig. 3;

Fig. 5 is a schematic diagram of the partial structure of the connection between the table leg and the table belly;

Fig. 6 is a schematic view of the utility model in use.

Explanation of reference signs:

1 table leg; 2 table belly; 3 table top; 4 angle adjustment device; 5 crank; 6 frame; 7 pawl; 8 switch block; 9 spring; 10 ratchet wheel; 11 ratchet;

Detailed ways

Referring to Fig. 1 and Fig. 2, the utility model provides a kind of desk, mainly is made up of table leg 1, table belly 2 and table top 3. The table legs 1 and the table belly 2 are connected by height-adjustable bolts, and the table top 3 and the table belly 2 are connected by an angle adjusting device 4 .

FIG. 3 shows the composition structure of the upper part of the angle adjustment device 4 . Wherein, the angle adjusting device 4 includes devices such as a crank 5, a frame 6, a pawl 7, a switch block 8 and a spring 9. Wherein, the crank 5 is a plurality of cranks with equal length and parallel to each other arranged between the table top and the table body, and the two ends are pivotally connected to the table body 2 and the table top 3 respectively. Two cranks 5 with equal length and parallel to each other are respectively set on the outer side of the crankshaft. The bottom ends of the cranks 5 are respectively pivotally connected to the table body 2 , and the top ends of the cranks 5 are respectively pivotally connected to the frame 6 , and the frame 6 is fixed below the table top 3 .

Referring to FIG. 4 , the top end of at least one crank 5 forms a ratchet 10 , and the center of the ratchet 10 is pivotally connected to the frame 6 . The ratchet 7 is positioned at the side of the ratchet 10, and the middle part of the ratchet 7 is also pivotally connected to the frame 6. One end of the ratchet 7 has an engaging tooth 12 meshed with the ratchet 11 of the ratchet 10, and the other end of the ratchet 7 The switch block 8 is pivotally connected, and the top of the switch block 8 has a bump and a step. The ratchet 11 of the ratchet 10 and the occlusal teeth 12 of the ratchet 7 form a self-locking device in the direction of desktop closing. Preferably, the mating surfaces of the ratchet 11 and the occlusal teeth 12 in the direction of desktop opening have inclined surfaces or paraboloids that can be pushed away from each other. structure, and the mating surfaces of the ratchet 11 and the engaging teeth 12 facing the closing direction of the desktop have a planar structure that locks each other.

According to Fig. 5, the table legs 1 and the table legs 2 can also be connected separately, wherein the bottom of the table body and the upper part of the table legs are respectively provided with several screw holes of different heights, and are fixedly connected by bolts.

Below, according to Fig. 6, and in conjunction with the structure of Fig. 1-5, specifically illustrate the working process of the present utility model.

First, when the table top is opened from the closed state, the bottom ends of the plurality of parallel cranks 5 pivotally connected to the table body 2 rotate relative to the table body 2, driving the table top 3 connected to the top of the cranks 5 through the frame 6 to rotate upwards , Simultaneously because the crank 5 top also pivots relative to the frame 6, it is guaranteed that the desktop 3 above the frame 6 remains horizontal during the opening process, and the desktop can be opened under the condition that the items on the table remain the same.

Secondly, because the top of at least one crank 5 forms a ratchet 10, which cooperates with the ratchet 7 on the side, and the mating surface of the ratchet 11 of the ratchet 10 in the opening direction of the desktop and the meshing tooth 12 of the ratchet 7 has a slope or a paraboloid. Therefore, in the process of opening the desktop, the ratchet 11 of the ratchet 10 constantly pushes away the occlusal teeth 12 of the ratchet 7, that is, the opening is not restricted. After flipping to a certain angle, when the user needs to free his hands to take the items in the table belly, since the mating surfaces of the ratchet 11 and the occlusal teeth 12 toward the tabletop closing direction have a planar structure that locks each other, the ratchet 10 and the ratchet 7. Self-locking is formed, thereby fixing the desktop at the desired position, ensuring the stability and convenience of use of the desktop.

Then, when the desktop needs to be closed, the user can press the switch block 8 connected to the right end of the ratchet 7 upwards. Since the top of the switch block 8 is abutted against the spring 9, the switch block can be within a certain range under the action of the pressing force. Move upwards, thereby driving the ratchet 7 to rotate relative to the pivot point on the frame 6, until the meshing teeth 12 of the ratchet 7 are out of mesh with the ratchets 11 of the ratchet 10, so the crank can rotate toward the desktop closing direction, thereby making the The tabletop closes smoothly.

Finally, considering the different heights of the users, the table legs 1 and the table legs 2 can also be connected in a separate way, wherein the bottom of the table body and the upper part of the table legs are respectively provided with several screw holes of different heights, and are fixedly connected by bolts . In this way, the height of the table belly can be adjusted conveniently and quickly.

The frame, ratchet and pawl are preferably made of 45 steel. The ratchet and pawl require high strength, hardness and wear resistance, so heat treatment is used to improve their performance and increase their service life.

In addition, this invention is not limited only to the structure of the said Example, In the range which does not change the summary of this invention, various deformation|transformation is possible. For example, the desk of the present utility model can be a single desk, and also can be a desk with a plurality of open desktops. The crank can be straight or curved; or the bottom end of the crank can be pivoted to the outside or inside or bottom of the table belly. In addition, the present invention has been fully described with reference to the embodiments of the drawings, but it is obvious that various changes and modifications can be made by those skilled in the art having general knowledge in the field. Therefore, such changes and modifications should be construed as being included in the scope of the present invention without departing from the scope of the present invention.

Claims (5)

1. A desktop open desk, comprising table legs (1), table belly (2) and desktop (3), is characterized in that: a plurality of equal lengths are set between the table belly (2) and the desktop (3) And the cranks (5) parallel to each other, the two ends of the cranks (5) are pivotally connected to the table belly (2) and the table top (3) respectively. 2. The desktop open desk according to claim 1, characterized in that: a plurality of frames (6) are fixed below the desktop (3), and the tops of the cranks (5) are pivotally connected to the frames ( 6) on. 3. The desktop open desk according to claim 2, characterized in that it also includes: pawl (7), switch block (8) and spring (9); the top of at least one crank (5) forms a ratchet (10 ), the center of circle of the ratchet (10) is pivotally connected to the frame (6); the ratchet (7) is positioned at the side of the ratchet (10), and the middle part of the ratchet (7) is also pivotally connected to the frame (6) , one end of the ratchet (7) has an engaging tooth (12) meshed with the ratchet (11) of the ratchet (10), and the other end of the ratchet (7) is pivotally connected to the switch block (8); the switch block (8 ) top has a bump and a step, the upper end of the spring (9) is fixed below the desktop (3), and the lower end of the spring (9) abuts on the step at the top of the switch block (8); the ratchet (11) of the ratchet (10) and The occlusal teeth (12) of the ratchet (7) constitute a self-locking device in the direction of desktop closing. 4. The desktop open desk according to claim 3, characterized in that the mating surfaces of the ratchet (11) and the occlusal teeth (12) in the opening direction of the desktop have inclined or parabolic structures that can be pushed away from each other. The mating surfaces of the ratchet (11) and the occlusal teeth (12) in the closing direction of the desktop have a mutually locked planar structure. 5. The desktop open desk according to any one of claims 1-4, characterized in that the table leg (1) and the table belly (2) adopt a separate connection method, wherein the bottom of the table belly (2) and the table leg (1) The upper part is respectively provided with several screw holes with different heights, and the table legs (1) are fixedly connected with the table legs (2) through the bolts.

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