Anti-falling gravity recovery desk and chair seat plate mechanism
By setting angle brackets, rotating shafts and anti-falling barrier levers on both sides of the desk and chair seat plate, and setting limit support in the anti-falling box, the problem of falling off due to long-term wear and tear on the desk and chair seat plate is solved, and the anti-falling effect is achieved.
Patent Information
- Application Number
- CN202421631509.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-10
AI Technical Summary
Due to long-term use of existing foldable and responsive desks and chairs, the articulated shafts and shaft holes on both sides of the seat plate will wear out, resulting in the seat plate falling off.
A seat plate mechanism for anti-falling gravity recovery of the desk and chair is designed. By setting an angle code bracket, a rotating shaft and an anti-falling barrier lever on both sides of the seat plate, and a seat plate is set in the anti-falling box to open the limit support and the seat plate return limit support to limit the rotation angle of the rotating shaft and prevent falling off.
It effectively prevents the problem of seat plate falling off due to long-term use. Even if the shaft and shaft hole become thinner and larger due to wear, the shaft will not fall off under the limitations of the anti-falling barrier lever.
Smart Images
Figure CN222787280U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of desks and chairs, and in particular relates to an anti-falling gravity recovery desk and chair seat plate mechanism. Background Art
[0002] A common type of desk and chair arranged in some classrooms, conference rooms and other places is the folding type. When there is no one sitting on the desk and chair, due to the weight of the seat board, it can be rotated backwards and folded up, which not only reduces the aisle space occupation, but also reduces the dust adhering to the surface of the seat board after folding. The existing foldable desks and chairs will wear out the hinge shafts on both sides of the seat board after long-term use, and the shaft hole where the hinge shaft is located will also wear and become coarse, causing the seat board to fall off the seat bracket. Utility Model Content
[0003] The utility model aims to provide an anti-falling gravity recovery desk and chair seat plate mechanism, so as to prevent the desk and chair seat plates from falling off due to long-term use and wear.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] Provided is an anti-falling gravity recovery desk and chair seat mechanism, comprising a seat and two chair feet, wherein the chair feet are respectively provided with supporting cross bars; angle brackets are respectively provided on both sides of the seat, wherein the angle brackets are provided with a rotating shaft, and an anti-falling stopper rod is provided on one side of the rotating shaft; an anti-falling box is provided on the supporting cross bar, wherein the anti-falling box is provided with an axial hole, wherein the rotating shaft is arranged in the axial hole, wherein the anti-falling stopper rod is arranged in the anti-falling box, and a seat plate opening limit support and a seat plate recovery limit support for blocking the anti-falling stopper rod are provided in the anti-falling box to limit the rotation angle of the rotating shaft in the axial hole.
[0006] Preferably, a seat plate opening limit silencer rubber block and a seat plate return limit silencer rubber block are respectively provided on the side where the seat plate opening limit support and the seat plate return limit support contact the anti-fall-off baffle rod.
[0007] Preferably, a first groove is provided on the seat plate opening limit support, and a second groove is provided on the seat plate return limit support, and a first protrusion and a second protrusion are respectively provided on the seat plate opening limit silencer rubber block and the seat plate return limit silencer rubber block, and the first protrusion and the second protrusion are respectively arranged in the first groove and the second groove.
[0008] Preferably, the anti-drop box comprises a lower half main box body and an upper half box body, and the upper half box body is connected to the lower half main box body through a connecting structure.
[0009] Preferably, the connecting structure includes a card plate arranged on the inner side of the upper box body, and a card shaft correspondingly arranged on the outer side of the lower main box body, and the card shaft is clamped on the upper side of the card plate; the connecting structure also includes a card protrusion arranged on the inner side of the upper box body, and a card groove correspondingly arranged on the inner side of the lower main box body, and the card protrusion is clamped in the card groove.
[0010] Preferably, the corner bracket and the lower half of the main box body are made of aluminum alloy.
[0011] Preferably, the angle bracket is mounted on the seat plate by screws; and the anti-falling box is mounted on the supporting cross bar by screws.
[0012] Preferably, a chair backrest is provided between the two chair feet.
[0013] Preferably, the chair legs are respectively provided with handrails.
[0014] Compared with the prior art, the utility model has the following beneficial effects: since the anti-falling gravity recovery seat mechanism of the desk and chair is achieved by arranging angle brackets on both sides of the seat, arranging a rotating shaft on the outside of the angle bracket, and arranging an anti-falling baffle rod on the outside of the rotating shaft, when the rotating shaft on the outside of the angle bracket is arranged in the shaft hole of the anti-falling box, and the anti-falling baffle rod is located on the inside of the anti-falling box, under long-term use, even if the rotating shaft is rubbed and becomes thinner due to long-term use, and the shaft hole is rubbed and becomes larger, under the limiting effect of the anti-falling baffle rod, the rotating shaft will not fall out of the shaft hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0016] Figure 1 This is a schematic diagram of the open state of the seat plate in use in one embodiment of the anti-falling gravity recovery seat plate mechanism of the desk and chair of the utility model.
[0017] Figure 2 This is a schematic diagram of the recovery state of the seat plate when in use in one embodiment of the anti-falling gravity recovery seat plate mechanism of the utility model.
[0018] Figure 3 It is an exploded view of the angle bracket in one embodiment of the anti-falling gravity recovery desk and chair seat mechanism of the utility model.
[0019] Figure 4 It is a structural schematic diagram of the anti-falling box in one embodiment of the anti-falling gravity recovery desk and chair seat mechanism of the utility model.
[0020] Figure 5It is an exploded view of an embodiment of the anti-falling gravity recovery desk and chair seat mechanism of the utility model.
[0021] Figure 6 It is a schematic diagram of the installation structure of the angle bracket and the anti-falling box in one embodiment of the anti-falling gravity recovery desk and chair seat mechanism of the utility model.
[0022] Figure 7 This is one of the exploded views of the anti-falling box in one embodiment of the anti-falling gravity recovery seat mechanism for desks and chairs of the utility model.
[0023] Figure 8 This is the second exploded view of the anti-falling box in one embodiment of the anti-falling gravity recovery desk and chair seat mechanism of the utility model.
[0024] Fig. 9 It is a structural schematic diagram of the decorative plate on the corner bracket in one embodiment of the anti-falling gravity recovery desk and chair seat mechanism of the utility model.
[0025] In the figure, the numbers are indicated as: seat plate 1, chair foot 2, support cross bar 21, support plate 22, handrail rod 23, angle bracket 3, rotating shaft 31, anti-falling stop bar 32, decorative plate 33, tensioning pin 331, anti-falling box 4, shaft hole 41, seat plate opening limit support 42, first groove 421, seat plate return limit support 43, second groove 431, seat plate opening limit silencer rubber block 44, first protrusion 441, seat plate return limit silencer rubber block 45, second protrusion 451, upper half box body 46, clamping plate 461, clamping protrusion 462, lower half main box body 47, clamping shaft 471, clamping groove 472, chair back plate 5. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In one embodiment, a gravity-recovery mechanism for preventing a desk or chair from falling off is provided. Figure 1-5As shown, the anti-falling gravity recovery desk and chair seat mechanism includes a seat 1 and two chair feet 2, the seat 1 is made of multi-layer wood, the chair feet 2 are made of metal, and support cross bars 21 are respectively provided on the chair feet 2, and the support cross bars 21 are used to install the seat 1; angle brackets 3 are respectively provided on both sides of the seat 1, and the angle brackets 3 are made of aluminum alloy, which has high strength and light weight. A rotating shaft 31 is provided on the outer side of the angle bracket 3, and an anti-falling baffle rod 32 is provided on the outer side of the rotating shaft 31, and the angle bracket 3, the rotating shaft 31 and the anti-falling baffle rod 32 are integrally formed. An anti-falling box 4 is provided on the supporting cross bar 21, and an axial hole 41 is provided on the anti-falling box 4. The rotating shaft 31 on the outer side of the angle bracket 3 is arranged in the axial hole 41, and the rotating shaft 31 can rotate in the axial hole 41. The anti-falling baffle rod 32 is arranged in the anti-falling box 4, and a seat plate opening limit support 42 and a seat plate return limit support 43 for blocking the anti-falling baffle rod 32 are provided in the anti-falling box 4 to limit the rotation angle of the rotating shaft 31 in the axial hole 41, so as to further enable the seat plate 1 to rotate within a certain angle range to realize the opening and return functions.
[0028] The anti-falling gravity recovery desk and chair seat mechanism is used as follows: Figure 1 As shown, the anti-falling gravity recovery desk and chair seat mechanism is provided with corresponding screw holes on the seat plate 1 and the angle bracket 3, and the angle bracket 3 is installed on the seat plate 1 by screws; Figure 6 As shown, the rotating shaft 31 on the outside of the angle bracket 3 passes through the shaft hole 41 on the anti-drop box 4, so that the anti-drop blocking rod 32 on the outside of the rotating shaft 31 is located inside the anti-drop box 4; screw holes are also provided at the front end of the support crossbar 21, and the anti-drop box 4 is installed on the front end of the support crossbar 21 by screws; a support plate 22 is provided at the bottom of the two chair standing feet 2, and the support plate 22 is fixed to the ground by anchor bolts, so as to install and fix the entire desk and chair seat plate mechanism. When the seat plate 1 installed between the two chair standing feet 2 is rotated, the rotating shaft 31 rotates in the shaft hole 41. In this process, the anti-drop blocking rod 32 is limited to the interval between the seat plate opening limit support 42 and the seat plate return limit support 43. When the seat plate 1 is opened, the anti-drop blocking rod 32 contacts the side of the seat plate opening limit support 42. When the seat plate is returned to its original position and folded, the anti-drop blocking rod 32 contacts the side of the seat plate return limit support 43.
[0029] Since the anti-falling gravity recovery seat mechanism of the desk and chair is achieved by arranging angle brackets 3 on both sides of the seat plate 1, arranging a rotating shaft 31 on the outside of the angle bracket 3, and arranging an anti-falling baffle rod 32 on the outside of the rotating shaft 31, when the rotating shaft 31 on the outside of the angle bracket 3 is set in the shaft hole 41 of the anti-falling box 4, the anti-falling baffle rod 32 is located on the inside of the anti-falling box 4, under the condition of long-term use, even if the rotating shaft 31 is rubbed and becomes thinner due to long-term use, and the shaft hole 41 is rubbed and becomes larger, under the limiting effect of the anti-falling baffle rod 32, the rotating shaft 31 will not fall out of the shaft hole 41.
[0030] Further, in another embodiment, in combination Figure 6 As shown, the anti-falling gravity recovery desk and chair seat mechanism is provided with a seat plate opening limit silencer rubber block 44 and a seat plate return limit silencer rubber block 45 on the side where the seat plate opening limit support 42 and the seat plate return limit support 43 contact the anti-falling stopper. By providing the seat plate opening limit silencer rubber block 44 and the seat plate return limit silencer rubber block 45, when the seat plate 1 is opened, the anti-falling stopper 32 abuts against the seat plate opening limit silencer rubber block 44 on the side of the seat plate opening limit support 42, and no hard contact occurs, thereby reducing noise; similarly, when the seat plate 1 is returned to its original position and folded up, the anti-falling stopper 32 abuts against the seat plate return limit silencer rubber block 45 on the side of the seat plate return limit support 43, and no hard contact occurs, thereby reducing noise.
[0031] Further, in another embodiment, in combination Figure 4 As shown, the anti-falling gravity recovery desk and chair seat mechanism is provided with a first groove 421 on the seat opening limit support 42, a second groove 431 on the seat return limit support 43, and a first protrusion 441 and a second protrusion 451 are respectively provided on the seat opening limit silencer rubber block 44 and the seat return limit silencer rubber block 45, and the first protrusion 441 and the second protrusion 451 are respectively arranged in the first groove 421 and the second groove 431. By the way that the first protrusion 441 and the second protrusion 451 are matched with the first groove 421 and the second groove 431 respectively, the installation of the seat opening limit silencer rubber block 44 and the seat return limit silencer rubber block 45 is more convenient.
[0032] Further, in another embodiment, Figure 7 and Figure 8 As shown, the anti-drop box 4 in the anti-drop gravity recovery desk and chair seat mechanism includes a lower half main box body 47 and an upper half box body 46. The upper half box body 46 is connected to the lower half main box body 47 through a connecting structure, which facilitates the installation of the angle bracket 3 and the anti-drop box 4. Among them, the connecting structure here includes a clamping plate 461 arranged on the inner side of the upper half box body 46, and a clamping shaft 471 correspondingly arranged on the outer side of the lower half main box body 47. When the upper half box body 46 is connected to the lower half main box body 47, the clamping shaft 471 is clamped on the upper side of the clamping plate 461, thereby limiting the position in the up and down directions; the connecting structure also includes a clamping protrusion 462 arranged on the inner side of the upper half box body 46, and a clamping groove 472 correspondingly arranged on the inner side of the lower half main box body 47. The clamping protrusion 462 is clamped in the clamping groove 472, thereby limiting the position in the axial direction. In other embodiments, the connecting structure can also adopt a bolt and screw hole structure.
[0033] Furthermore, in another embodiment, the angle bracket 3 and the lower main box body 47 of the anti-falling gravity recovery desk and chair seat mechanism are both made of aluminum alloy, which is light and has great strength.
[0034] In addition, in one embodiment, a chair backrest board 5 is further provided between the two chair legs 2. Handrails 23 are also respectively provided on the chair legs 2.
[0035] In addition, in one embodiment, Figure 3 and Fig. 9 As shown, a decorative plate 33 is provided on the angle bracket 3, a tensioning pin 331 is provided on the decorative plate 33, and a pin hole is correspondingly provided on the angle bracket 3, and the angle bracket 3 is installed on the angle bracket 3 through the tensioning pin 331.
[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-falling gravity recovery seat mechanism for desks and chairs, characterized in that: It includes a seat plate and two chair feet, and the chair feet are respectively provided with supporting cross bars; angle brackets are respectively provided on both sides of the seat plate, and a rotating shaft is provided on the angle bracket, and an anti-falling stopper rod is provided on one side of the rotating shaft; an anti-falling box is provided on the supporting cross bar, and an axial hole is provided on the anti-falling box, the rotating shaft is arranged in the axial hole, the anti-falling stopper rod is arranged in the anti-falling box, and a seat plate opening limit support and a seat plate returning limit support for blocking the anti-falling stopper rod are provided in the anti-falling box to limit the rotation angle of the rotating shaft in the axial hole.
2. The anti-falling gravity recovery seat mechanism for desks and chairs according to claim 1, characterized in that: A seat plate opening limit silencer rubber block and a seat plate returning limit silencer rubber block are respectively provided on the side where the seat plate opening limit support and the seat plate returning limit support contact the anti-falling baffle rod.
3. The anti-falling gravity recovery seat mechanism for desks and chairs according to claim 2, characterized in that: A first groove is provided on the seat plate opening limit support, and a second groove is provided on the seat plate return limit support. The seat plate opening limit silencer rubber block and the seat plate return limit silencer rubber block are respectively provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion are respectively arranged in the first groove and the second groove.
4. The anti-falling gravity recovery seat mechanism for desks and chairs according to claim 1, characterized in that: The anti-drop box comprises a lower half main box body and an upper half box body, and the upper half box body is connected to the lower half main box body through a connecting structure.
5. The anti-falling gravity recovery seat mechanism for desks and chairs according to claim 4, characterized in that: The connecting structure includes a card plate arranged on the inner side of the upper box body, and a card shaft correspondingly arranged on the outer side of the lower main box body, and the card shaft is clamped on the upper side of the card plate; the connecting structure also includes a card protrusion arranged on the inner side of the upper box body, and a card slot correspondingly arranged on the inner side of the lower main box body, and the card protrusion is clamped in the card slot.
6. The anti-falling gravity recovery desk and chair seat mechanism according to claim 4, characterized in that: The corner bracket and the lower half of the main box body are made of aluminum alloy.
7. The anti-falling gravity recovery desk and chair seat mechanism according to claim 1, characterized in that: The angle bracket is installed on the seat plate by screws; the anti-falling box is installed on the supporting cross bar by screws.
8. The anti-falling gravity recovery seat mechanism for desks and chairs according to claim 1, characterized in that: A chair backrest plate is also provided between the two chair feet.
9. The anti-falling gravity recovery seat mechanism for desks and chairs according to claim 1, characterized in that: The chair legs are respectively provided with handrails.