Table angle adjustment mechanism
Through the locking mechanism of the ring gear, pawl and connecting rod, combined with the linkage line and damping components, the problems of unstable angle adjustment and inconvenient unlocking in the prior art are solved, and rigid locking and slow closing at any angle are achieved , improves the support and operation convenience of the table.
Patent Information
- Application Number
- CN202010815464.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-08-14
AI Technical Summary
The existing table plate angle adjustment mechanism is insufficient to support at a small angle, causing the tabletop to shake, and the unlocking operation is inconvenient, and rigid locking cannot be achieved at any angle.
A locking mechanism including a ring gear, a pawl and a connecting rod is adopted to achieve angle locking through the engagement teeth of the ring gear and a pawl, and the table plate is slowly closed through the linkage line and the damping assembly.
The convenience of rigid locking and unlocking operations at any angle is achieved, ensuring that the table plate supports firmly and slowly closes after unlocking, improving the user experience.
Smart Images
Figure CN111820675B_ABST
Abstract
Description
[Technical field]
[0001] The invention relates to the technical field of angle adjustment mechanisms, and in particular to an angle adjustment mechanism for a table top. [Background technology]
[0002] At present, as people's awareness of children's healthy growth increases, more and more parents will equip their children with tables with flip-top functions to meet different usage scenarios such as children doing homework, reading and drawing. Based on the above usage scenarios, the angle adjustment structure of the movable table is required to be stable, reliable, and easy to operate. There are currently two ways of angle adjustment on the market:
[0003] The first method is to use a slider and a rack. This angle adjustment method has very few adjustable levels, generally no more than 13 levels. Moreover, this structure is difficult to unlock, and the tabletop needs to be adjusted to a larger angle to unlock it, so that the tabletop can be laid flat.
[0004] The second is to use hydraulic rods for support and adjustment. This support method is used at small angles, especially when it is less than 10°, because the angle between the hydraulic rod and the table top is too small, the force in the support direction is insufficient, and it cannot be rigidly locked, so the tabletop will shake. Less than 10° happens to be the most commonly used angle for homework and reading, so the shaking greatly affects the user experience; moreover, the internal pressure of this hydraulic rod is very high, giving people a feeling of insecurity.
[0005] And flip desks generally have fixed table tops. When unlocking using the above two methods, you need to hold the movable table top close to the fixed table top. If you are not careful, your hand will be squeezed, which is very inconvenient to use.
[0006] Therefore, it is necessary to provide an improved table top angle adjustment mechanism and method to solve the above problems. [Summary of the invention]
[0007] The present invention aims at solving the problems existing in the prior art and requires a table top angle adjustment mechanism which can realize rigid locking at any locking angle, with firm support of the table top, convenient unlocking operation and the table top slowly closing after unlocking.
[0008] In order to solve the above problems, the present invention provides a table top angle adjustment mechanism, comprising: a table frame, a table top movably connected to the table frame, and an angle adjustment component connected between the table top and the table frame, the angle adjustment component is used to adjust the angle of rotation of the table top relative to the table frame with a first axis as the axis, the angle adjustment component includes a first connecting rod and a locking mechanism, the locking mechanism includes a gear ring connected to the table frame, and a pawl connected to the first connecting rod, the first connecting rod is connected to the table top, and the first connecting rod is rotatably connected relative to the gear ring, when the locking mechanism is in a locked state, the circumferential position of the pawl relative to the gear ring is locked, so that the angle of the table top relative to the table frame is locked, or / and the pawl can rotate in one direction relative to the gear ring, so that the table top can rotate in one direction relative to the table frame; when the locking mechanism is in an unlocked state, the pawl can rotate in at least another direction relative to the gear ring, so that the table top can rotate in at least another direction relative to the table frame, and the rotation of the pawl in the other direction is released, wherein the locking mechanism is used to lock the table top from rotating in another direction.
[0009] Furthermore, the table top angle adjustment mechanism also has an operating member, and the table top angle adjustment mechanism also has an operating member, and the operating member can operate the pawl to move between a locking position and an unlocking position.
[0010] Furthermore, the operating member includes a linkage line, one end of which is connected to the pawl and the other end is connected to the operating part. When the operating part is pulled, the linkage line drives the pawl to move in a direction away from the gear ring.
[0011] Furthermore, the operating portion is close to a side where the table top is connected to the table frame.
[0012] Further, the pawl is elastically preloaded toward the ring gear.
[0013] Furthermore, the first connecting rod is connected to or formed with a positioning device, the pawl is movably installed in a receiving cavity formed by the positioning device, one end of the pawl is wedge-shaped, and one end of the pawl matches the shape of the receiving cavity.
[0014] Furthermore, the outer periphery of the gear ring and the end faces of the pawl and the gear ring where the pawl cooperates are at least partially provided with meshing teeth, and the meshing teeth of the pawl and the gear ring are meshed with each other to achieve locking of the locking mechanism.
[0015] Furthermore, the angle adjustment assembly also has a second connecting rod movably connected to the first connecting rod, and a connecting plate movably connected to the second connecting rod, and the connecting plate is connected to the table top.
[0016] Furthermore, the table top angle adjustment mechanism also has a linear damping assembly, which includes a connecting arm, a slider, and a linear damper. One end of the connecting arm can be rotatably connected to the first connecting rod, and the other end is connected to the slider. A plurality of linear dampers are installed on one end of the slider. After the locking mechanism is unlocked, the first connecting rod rotates relative to the ring gear, so that the connecting arm pushes the slider to slide in the direction of the linear damper, and the slider squeezes the linear damper, so that the first connecting rod drives the table top to slowly descend.
[0017] Furthermore, the table top angle adjustment mechanism also has a rotation damper, and the rotation damper is connected to the ring gear. When the first connecting rod rotates relative to the ring gear, the first connecting rod drives the rotation damper to rotate with damping, so that the first connecting rod drives the table top to slowly descend.
[0018] Furthermore, when the locking mechanism in the scheme of the present invention is in the locking position, the table top can be selected at any angle and can be rigidly locked, and the table top is firmly fixed; when the locking mechanism is in the unlocking position, the operation is simple and the table top is easy to close.
Brief Description of the Drawings
[0019] Figure 1 It is a structural schematic diagram of the table top angle adjustment mechanism of the present invention.
[0020] Figure 2 It is a structural exploded view of the angle adjustment assembly of the present invention.
[0021] Figure 3 (a) is the present invention Figure 2 Partial structural exploded view of the middle pawl in the unlocked position; Figure 3 (b) is the present invention Figure 2 Partial exploded view of the center pawl in the locked position.
[0022] Figure 4 It is a structural schematic diagram of a table top angle adjustment mechanism of the present invention installed with a linear damping component.
[0023] Figure 5 It is a structural schematic diagram of other embodiments of the table top angle adjustment mechanism of the present invention. [Specific implementation method]
[0024] The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are merely directions in the drawings and are only used to explain and illustrate the present invention, rather than to limit the scope of protection of the present invention.
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0026] See also Figures 1 to 5 As shown, the table top angle adjustment mechanism in the embodiment of the present invention includes a table top 3, a table frame 2, and an angle adjustment component 1 connected between the table top 3 and the table frame 2. The table top 3 and the table frame 2 form a rotation connection with the first axis 101 as the axis. The angle adjustment component 1 is used to adjust the angle of rotation of the table top 3 relative to the table frame with the first axis 101 as the axis.
[0027] The angle adjustment assembly 1 has a first connecting rod 11, a second connecting rod 12, a locking mechanism 13, and a core shaft 14. One end of the angle adjustment assembly 1 is connected to the table top 3 through a connecting plate 5, and the other end is connected to the table frame 2 through a mounting frame 4. The mounting frame 4 is formed on or mounted on the table frame 2. In this embodiment, the mounting frame 4 is installed on the table frame 2 as an example. The second connecting rod 12 is movably connected to the connecting plate 5, the first connecting rod 11 is movably connected to the second connecting rod 12, and the first connecting rod 11 is movably connected to the mounting frame 4. In this way, when the table top 3 rotates relative to the table frame 2 with the first axis 101 as the axis, the connecting plate 5 can rotate relative to the second connecting rod 12 with the fourth axis 104 as the axis, the second connecting rod 12 can rotate relative to the first connecting rod 11 with the third axis 103 as the axis, and the first connecting rod 11 can rotate relative to the mounting frame 4 with the second axis 102 as the axis. The first axis, the second axis, the third axis, and the fourth axis are parallel to each other. The locking mechanism 13 is used to lock the rotation of the first connecting rod 11 relative to the mounting bracket 4. In this embodiment, the locking direction is Figure 3 The first connecting rod 11 is connected to the locking mechanism 13 via the mandrel 14 .
[0028] The locking mechanism 13 includes a gear ring 131, a pawl 132, a positioning device 134, and a biasing element 133. The gear ring 131 is connected to the first connecting rod 11 through the spindle 14. The first connecting rod 11 can be rotatably connected to the gear ring 131 with the second axis 102 as the axis, and the gear ring 131 is fixedly connected to the mounting frame 4. The first connecting rod 11 is connected or formed with a positioning device 134, and the pawl 132 is movably installed in a receiving cavity 1341 formed by the positioning device 134. One end of the pawl 132 is wedge-shaped, and one end of the pawl 132 matches the shape of the receiving cavity 1341, and the other end is elastically preloaded toward the gear ring 131 by the biasing element 133. In the locked state, the locking mechanism locks the first connecting rod 11 from rotating in the opposite direction to A relative to the mounting frame 4, and the position of the pawl 132 relative to the ring gear 131 is locked; or / and, the pawl 132 is disengaged from the shape lock with the ring gear 131, and the pawl can rotate in direction A relative to the ring gear 131. The outer periphery of the ring gear 131 and the mating end faces of the pawl and the ring gear 131 are provided with meshing teeth. The meshing teeth of the ring gear and the pawl mesh with each other to achieve locking. The density of the meshing teeth determines the number of levels in the angle adjustment structure. The smaller and denser the meshing teeth, the more adjustable levels the table top 3 can be relative to the table frame 2. The outer periphery of the ring gear is at least partially provided with meshing teeth.
[0029] Under the elastic action of the biasing element 133, the pawl 132 moves toward the direction close to the gear ring 131, and the meshing teeth of the pawl and the gear ring cooperate with each other. Figure 3 (b) When rotating in direction A, the force on the gear ring 4 is transmitted to the pawl 132, so that the pawl 132 overcomes the elastic force of the biasing element 133 and moves away from the gear ring 131, and the first connecting rod 11 rotates around the gear ring 131 with the pawl 132. When the first connecting rod 11 moves with the pawl 132 in the direction opposite to direction A, the force on the gear ring 131 is transmitted to the pawl 132, so that the pawl moves toward the gear ring 131, and the pawl is positioned in the wedge-shaped position of the receiving cavity, thereby achieving the locking of the table top 3 at this angle.
[0030] When the table top 3 is opened, the table top 3 rotates relative to the table frame 2, the first connecting rod 11 rotates with the core shaft 14, and the core shaft 14 rotates in the bearing installed on the ring gear 131, so that the first connecting rod 11 rotates relative to the ring gear 131. When the table top rotates to a suitable position, the hand releases the table top, and under the action of the gravity of the table top, the first connecting rod 11 is subjected to a downward force, and the positioning device 14 installed on the first connecting rod 11 is also subjected to a downward force, and the positioning device 14 drives the pawl 132 to move in the direction opposite to the direction A, thereby locking the position of the table top relative to the table frame.
[0031] The operating member 6 can drive the pawl 132 to move in the direction away from the gear ring 131. The operating member 6 can be selected as a Bourdon cable or a brake cable. The operating member 6 includes a linkage cable 62 and a protective cover 61 covering the outside of the linkage cable 62. The linkage cable 62 can be selected as a steel wire rope. The first end of the linkage cable 62 passes through the biasing element 133 and is connected to the pawl 132, and the second end extends out of the protective cover and is connected to the operating part 63. When we need to close the table top, pull the operating part 63 so that the linkage cable 62 drives the pawl 132 to overcome the elastic force of the second biasing element and move in the direction away from the gear ring 131. The pawl is disengaged from the gear ring, and the table top can move to the closed position. In other embodiments of the present invention, the operating part is located at a position convenient for the user to operate, that is, close to the side where the table top is hinged to the table frame. Generally, a table has a movable table top and a fixed table top. If the operating part is located on the side away from the hinged connection between the table top and the table frame, when unlocking, the hand will be squeezed if the hand is held on the side of the movable table top close to the fixed table top by accident. In other embodiments of the present invention, the operating part is set on the side close to the hinged connection between the table top and the table frame to prevent the hand from being squeezed when unlocking. Figure 5 shown.
[0032] In other embodiments of the present invention, the table top angle adjustment mechanism also has a damping structure, and the damping mechanism can select a linear damper assembly or a rotary damper. The linear damping assembly 7 includes a connecting arm 71, a slider 72, and a linear damper 73. One end of the connecting arm 71 can be rotatably connected to the first connecting rod 11, and the other end is connected to the slider 72. One end of the connecting arm is formed with or connected to a pin 712, and the pin 712 is installed in a groove 721 of the slider 72. The number of linear dampers 73 installed at one end of the slider 72 can be selected according to the required damping force. After the locking mechanism 13 is unlocked, the first connecting rod 11 rotates with the core shaft 14, so that the connecting arm 71 pushes the slider 72 backward. During the backward sliding process, the slider 72 squeezes the linear damper 23, so that the first connecting rod 11 drives the table top 3 to slowly descend.
[0033] In other embodiments of the present invention, when a rotation damper is selected, the rotation damper is connected to the gear ring, and the bearing in the gear ring is selected as a one-way bearing. The first connecting rod 11 is connected to the one-way bearing through the spindle 14. During the opening process of the table board, the first connecting rod 11 drives the spindle 14 to rotate, and the spindle 14 rotates in the one-way bearing, and the rotation damper does not work; during the closing process of the table board, the operating member 6 is pulled by hand, and the operating member 6 overcomes the elastic force of the biasing device and drives the pawl 132 to move away from the gear ring 131, so that the pawl 132 is disengaged from the gear ring 131, and the locking mechanism 13 is unlocked. At this time, under the action of gravity, the first connecting rod 11 is subjected to a downward force, the first connecting rod drives the spindle 1 to rotate, the spindle 14 drives the one-way bearing to rotate, and the one-way bearing rotates with the rotation damper damped, and the table board is slowly released to the closed position.
[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0035] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A table angle adjustment mechanism, comprising: A table frame (2), a table top (3) movably connected to the table frame (2), and an angle adjustment component (1) connected between the table top (3) and the table frame (2), wherein the angle adjustment component (1) is used to adjust the angle of rotation of the table top (3) relative to the table frame (2) about a first axis, and is characterized in that the angle adjustment component (1) includes a first connecting rod (11) and a locking mechanism (13), the locking mechanism (13) includes a gear ring (131) connected to the table frame (2), and a pawl (132) connected to the first connecting rod (11), the first connecting rod (11) is connected to the table top (3), and the first connecting rod (11) is relative to the gear ring (131). ) is rotatably connected, when the locking mechanism (13) is in a locked state, the circumferential position of the pawl (132) relative to the gear ring is locked, so that the angle of the table top relative to the table frame is locked, or / and the pawl can rotate in one direction relative to the gear ring, so that the table top can rotate in one direction relative to the table frame; when the locking mechanism (13) is in an unlocked state, the pawl can rotate in at least another direction relative to the gear ring, so that the table top can rotate in at least another direction relative to the table frame, and the rotation of the pawl in the other direction is released, wherein the locking mechanism is used to lock the table top from rotating in the other direction; The table top angle adjustment mechanism also has an operating member (6), and the operating member (6) can operate the ratchet (132) to move between a locked position and an unlocked position. The operating member (6) includes a linkage line (62), one end of which is connected to the ratchet (132), and the other end is connected to an operating portion (63). When the operating portion is pulled, the linkage line (62) drives the ratchet (132) to move in a direction away from the gear ring (131); The table top angle adjustment mechanism further comprises a linear damping assembly (7), wherein the linear damping assembly (7) comprises a connecting arm (71), a slider (72), and a linear damper (73); one end of the connecting arm (71) is rotatably connected to the first connecting rod (11), and the other end is connected to the slider (72); one end of the slider (72) is provided with a plurality of linear dampers (73); after the locking mechanism (13) is unlocked, the first connecting rod (11) rotates relative to the gear ring (131), so that the connecting arm (71) ) pushes the slider (72) to slide in the direction of the linear damper (73), and the slider (72) squeezes the linear damper (23), so that the first connecting rod (11) drives the table top (3) to slowly descend; or, the table top angle adjustment mechanism also has a rotation damper, and the rotation damper is connected to the ring gear. When the first connecting rod rotates relative to the ring gear (131), the first connecting rod drives the rotation damper to rotate with damping, so that the first connecting rod (11) drives the table top (3) to slowly descend.
2. The table top angle adjustment mechanism according to claim 1, characterized in that: The operating portion is close to a side where the table top is connected to the table frame.
3. The table top angle adjustment mechanism according to claim 1, characterized in that: The pawl (132) is elastically preloaded toward the ring gear (131).
4. The table top angle adjustment mechanism according to claim 1, characterized in that: The first connecting rod (11) is connected to or formed with a positioning device (134), and the pawl (132) is movably installed in a receiving cavity (1341) formed by the positioning device (134), one end of the pawl (132) is wedge-shaped, and one end of the pawl (132) matches the shape of the receiving cavity (1341).
5. The table top angle adjustment mechanism according to claim 1, characterized in that: The outer periphery of the gear ring and the end faces of the pawl and the gear ring where the pawl cooperates are at least partially provided with meshing teeth, and the meshing teeth of the pawl and the gear ring are meshed with each other to achieve the locking of the locking mechanism.
6. The table top angle adjustment mechanism according to claim 1, characterized in that: The angle adjustment assembly (1) further comprises a second connecting rod (12) movably connected to the first connecting rod, and a connecting plate (5) movably connected to the second connecting rod (12), wherein the connecting plate (5) is connected to the table top (3).