Lifting table driven by soft belt

Abstract

The utility model discloses a lifting table driven by a soft belt in the field of life tools, which comprises a base, a support assembly and a table board, the support assembly comprises a guide rod and a support frame connected with the guide rod in a sliding mode, the table board is fixed on the top of the support frame, and a ratchet wheel tightening mechanism connected with a connecting belt in a winding mode is arranged on the top of the guide rod. The connecting belt is fixedly connected with the bottom of the support frame; the ratchet wheel tightening mechanism comprises a fixing frame and a handle, a rotating shaft is rotatably arranged at the front end of the fixing frame, a ratchet wheel is fixedly arranged at the end of the rotating shaft, the connecting belt is wound around the rotating shaft, a locking claw sliding block is slidably arranged in the middle of the fixing frame, and a pawl sliding block is slidably arranged in the middle of the handle. When the ratchet wheel tightening mechanism winds the connecting belt, the connecting belt drives the table plate to ascend, when the pawl sliding block and the locking pawl sliding block of the ratchet wheel tightening mechanism are separated from the ratchet wheel, the table plate can automatically descend under the action of self weight, and the whole adjusting mechanism is simple in structure, convenient to lift and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of living tools, in particular to a lifting table driven by a soft belt. Background Art

[0002] Tables are essential devices in people's lives. To meet the varying height requirements of children as they grow, the varying needs of different customers, and the need for dynamic height adjustment for some customers, height-adjustable tables are a common design trend. Currently, there are two types of lift tables on the market: motor-driven lift tables, such as the balanced electric lift table disclosed in Chinese Utility Model No. CN220859664U. This lift table raises and lowers the tabletop by controlling the synchronous operation of two electric push rods to push a support shaft. Manual lift tables, such as the hand-cranked lift table disclosed in Chinese Utility Model No. CN218960296U, raise and lower the tabletop via a manual worm drive system. These lift table structures all have drawbacks. Electric lift tables require an external power supply and are heavy, making them inconvenient to transport. Manual lift tables are more complex and costly. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the existing lifting tables, the technical problem to be solved by the present invention is to provide a lifting table which is simple in structure and convenient to lift and lower and is driven by a belt.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A soft belt-driven lifting table comprises a base, a bracket assembly and a table top arranged in sequence from bottom to top, the bracket assembly comprises a guide rod vertically arranged on the base and a support frame slidably connected to the guide rod, the table top is fixed to the top of the support frame, the top of the guide rod is provided with a ratchet tightening mechanism with a connecting belt wrapped around it, and the end of the connecting belt away from the ratchet tightening mechanism is fixedly connected to the bottom of the support frame; the ratchet tightening mechanism comprises a fixing frame and a handle, a rotating shaft is rotatably provided at the front end of the fixing frame, a ratchet is fixedly provided at the end of the rotating shaft, and the connecting belt is wrapped around the rotating shaft A pawl slider is slidingly provided in the middle of the fixing frame, and a first spring is provided between the rear end of the fixing frame and the pawl slider. In the natural state, the front end of the pawl slider is stuck on the gear teeth of the ratchet under the action of the first spring, and the front end of the handle is rotatably connected to the rotating shaft, and a pawl slider is slidingly provided in the middle of the handle, and a second spring is provided between the pawl slider and the rear end of the handle. In the natural state, the front end of the pawl slider is stuck on the gear teeth of the ratchet under the action of the second spring, and the fixing frame and the handle are both provided with a space for the finger to push the pawl slider and the pawl slider backward.

[0006] Furthermore, a first slide groove is provided on both sides of the middle part of the fixing frame, and both sides of the stop claw slider are slidably set in the first slide groove; a second slide groove is provided on both sides of the middle part of the handle, and both sides of the pawl slider are slidably set in the second slide groove.

[0007] Furthermore, a first screw and a second screw are respectively provided at the rear end of the fixing frame and the rear end of the handle, and the first spring and the second spring are respectively connected to the first screw and the second screw.

[0008] Furthermore, the area from the middle to the front end of the top of the handle is a cavity structure, and a push plate is provided at the lower end of the pawl slider, and the lower end of the push plate is inserted into the cavity in the middle of the pawl slider. When the pawl slider moves backward, the push plate can drive the pawl slider to move backward, so that the pawl slider and the pawl slider are disengaged from the ratchet.

[0009] Furthermore, the bracket assembly includes three guide rods, which are arranged along the three edges of the regular triangular prism. The bottom and top of the three guide rods are connected together by a triangular support plate and an upper support plate respectively. The support frame is a triangular prism structure, the lower end of which is slidably connected to the three guide rods through a guide plate, and the upper end passes through the through hole in the middle of the upper support plate and is slidably connected to it.

[0010] Furthermore, the fixing frame of the ratchet tightening mechanism is installed on the upper support plate.

[0011] Furthermore, the base includes four support tubes welded to each other at one end, each of the four support tubes is provided with a roller at the other end, a base plate is provided on the support tube, and the triangular support plate is mounted on the base plate.

[0012] Furthermore, a triangular top plate is provided on the top of the support frame, and the table top is fixed on the triangular top plate by screws.

[0013] The beneficial effects of the present invention are: the one-way transmission of the ratchet tightening mechanism and the friction force of the winding connecting belt are used to provide power. When the ratchet tightening mechanism winds the connecting belt, the connecting belt drives the table top to rise. When the pawl slider and the stop pawl slider of the ratchet tightening mechanism are disengaged from the ratchet, the table top will automatically drop under the action of its own weight. The entire adjustment mechanism has a simple structure, convenient lifting operation, and low cost, and is very suitable for some lightweight and miniaturized lifting tables. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural diagram of the lifting assembly of the utility model;

[0016] Figure 3 yes Figure 2Enlarged view of part A;

[0017] Figure 4 It is a main sectional view of the utility model;

[0018] Figure 5 yes Figure 4 Magnified view of part B.

[0019] Marked in the figure are, 1-base, 2-bracket assembly, 3-table top, 4-ratchet tightening mechanism, 5-connecting belt, 11-support tube, 12-roller, 13-base plate, 21-guide rod, 22-support frame, 23-triangular support plate, 24-upper support plate, 25-guide plate, 26-triangular top plate, 41-fixed frame, 42-handle, 43-rotating shaft, 44-ratchet, 45-stop claw slider, 46-first spring, 47-ratchet slider, 48-second spring, 49-push plate, 411-first slide groove, 412-first screw, 421-second slide groove, 422-second screw. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] It should be noted that if directional terms are used in this utility model, such as "up," "down," "left," "right," "front," and "back," these are intended to facilitate the description of the relative positions of components and are not intended to specify the absolute positions of the related components or the positional relationships between them. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. If terms related to quantity are used in this utility model, such as "multiple," "a plurality," or "several," these specifically refer to two or more.

[0022] like Figure 1-5As shown, the utility model provides a soft belt driven lifting table, comprising a base 1, a bracket assembly 2 and a table top 3 arranged in sequence from bottom to top, the bracket assembly 2 comprises a guide rod 21 vertically arranged on the base 1 and a support frame 22 slidably connected to the guide rod 21, the table top 3 is fixed to the top of the support frame 22, the top of the guide rod 21 is provided with a ratchet tightening mechanism 4 with a connecting belt 5 wrapped around it, and the end of the connecting belt 5 away from the ratchet tightening mechanism 4 is fixedly connected to the bottom of the support frame 22; the ratchet tightening mechanism 4 comprises a fixing frame 41 and a handle 42, the front end of the fixing frame 41 is rotatably provided with a rotating shaft 43, the end of the rotating shaft 43 is fixedly provided with a ratchet 44, the connecting belt 5 is wrapped around the rotating shaft 43, a pawl slider 45 is slidingly provided in the middle of the fixing frame 41, and a first spring 46 is provided between the rear end of the fixing frame 41 and the pawl slider 45. In the natural state, the front end of the pawl slider 45 is stuck on the teeth of the ratchet 44 under the action of the first spring 46, and the front end of the handle 42 is rotatably connected to the rotating shaft 43, and a pawl slider 47 is slidingly provided in the middle of the handle 42, and a second spring 48 is provided between the pawl slider 47 and the rear end of the handle 42. In the natural state, the front end of the pawl slider 47 is stuck on the teeth of the ratchet 44 under the action of the second spring 48. The fixing frame 41 and the handle 42 are both provided with a space for the fingers to push the pawl slider 47 and the pawl slider 45 backward.

[0023] The working process of this utility model is: Figure 3 As shown, when it is necessary to raise the table top 3, the handle 42 is first rotated upward clockwise, and the pawl slider 47 is used to drive the ratchet 44 to rotate clockwise, so that the connecting belt 5 is wrapped around the rotating shaft 43, thereby driving the support frame 22 to move upward, thereby raising the table top 3. During the rotation of the ratchet 44, the pawl slider 45 will first move backward under the action of the arc surface of the gear teeth, and then engage the next gear tooth under the action of the first spring 46, thereby preventing the ratchet 44 from rotating counterclockwise. When the handle 42 is rotated to a certain angle, it can be rotated back counterclockwise and then rotated clockwise, and so on, swinging back and forth until the table top 3 is raised to the predetermined height. When the table top 3 needs to be lowered, just use your fingers to push the pawl slider 47 and the stop pawl slider 45 backward so that the front ends of the two disengage from the ratchet 44. At this time, under the action of the dead weight of the table top 3 and the support frame 22, the connecting belt 5 will drive the rotating shaft 43 to rotate counterclockwise, the connecting belt 5 will stretch, and the table top 3 will drop until it drops to a predetermined height. Then release the pawl slider 47 and the stop pawl slider 45 so that the two can re-engage the ratchet 44 to stop the table top 3 from dropping.

[0024] Regarding the sliding arrangement of the stop pawl slider 45 and the ratchet slider 47, the solution adopted in this application is as follows: Figure 3As shown, a first slide groove 411 is provided on both sides of the middle part of the fixing frame 41, and both sides of the stop claw slider 45 are slidably set in the first slide groove 411; a second slide groove 421 is provided on both sides of the middle part of the handle 42, and both sides of the pawl slider 47 are slidably set in the second slide groove 421.

[0025] like Figure 3 、 Figure 5 As shown, in order to facilitate the installation of the first spring 46 and the second spring 48, a first screw 412 and a second screw 422 are respectively provided at the rear end of the fixing frame 41 and the rear end of the handle 42, which can be fixed by threaded connection. The first spring 46 and the second spring 48 are respectively connected to the first screw 412 and the second screw 422.

[0026] In order to facilitate the fingers to move the pawl slider 47 and the stop pawl slider 45 when lowering the table top 3, the preferred solution of the present invention is as follows: Figure 3 、 Figure 5 As shown, the area from the middle to the front end of the top of the handle 42 is a cavity structure, and the lower end of the pawl slider 47 is provided with a push plate 49, the lower end of which is inserted into the cavity in the middle of the pawl slider 45. The size of the cavity is sufficient. When the handle 42 is rotated counterclockwise during the raising of the table top 3, the push plate 49 can be disengaged from the cavity without affecting the movement of the pawl slider 45. When the table top 3 is lowered, when the pawl slider 47 moves backward, the lower end of the push plate 49 contacts the pawl slider 45 and can drive the pawl slider 45 to move backward as the pawl slider 47 continues to move backward, so that the pawl slider 47 and the pawl slider 45 are disengaged from the ratchet wheel 44. In this way, when lowering the table top 3, one only needs to insert a finger into the cavity area at the top of the handle 42 and then move the pawl slider 47 backward to achieve the lowering of the table top 3, making the operation more convenient.

[0027] Further, such as Figure 2 As shown, to improve the stability of the entire lifting table structure, the support assembly 2 includes three guide rods 21, which are arranged along the three edges of a regular triangular prism. The bottom and top of the three guide rods 21 are connected together by a triangular support plate 23 and an upper support plate 24, respectively. The support frame 22 is a triangular prism structure, the lower end of which is slidably connected to the three guide rods 21 via a guide plate 25, and the upper end passes through the through hole in the middle of the upper support plate 24 and is slidably connected thereto. The triangular support plate 23 and the upper support plate 24 are used to fix the two ends of the three guide rods 21 together to form a triangular prism structure, which improves the structural strength. The support frame 22 also adopts a triangular prism structure, and the lower end is slidably connected to the three guide rods 21 via the guide plate 25, and the upper end is slidably connected to the upper support plate 24, which improves the reliability of the connection between the support frame 22 and the guide rods 21 and the stability of the sliding.

[0028] In addition, the present invention also provides the following preferred solutions. After the upper support plate 24 is set, the fixing frame 41 of the ratchet tightening mechanism 4 can be installed on the upper support plate 24. In order to facilitate the connection between the support frame 22 and the table top 3, a triangular top plate 26 is provided on the top of the support frame 22, and the table top 3 is fixed to the triangular top plate 26 by screws. For the base 1, as shown in FIG. Figure 2 As shown, the base 1 includes four support tubes 11 welded to each other at one end, and a roller 12 is provided at the other end of each of the four support tubes 11. A base plate 13 is provided on the support tube 11, and the triangular support plate 23 is installed on the base plate 13.

Claims

1. A belt-driven lifting table, comprising a base (1), a bracket assembly (2) and a table top (3) arranged in order from bottom to top, characterized in that: The bracket assembly (2) includes a guide rod (21) vertically arranged on the base (1) and a support frame (22) slidably connected to the guide rod (21); the table top (3) is fixed on the top of the support frame (22); the top of the guide rod (21) is provided with a ratchet tightening mechanism (4) with a connecting belt (5) wound around it, and the end of the connecting belt (5) away from the ratchet tightening mechanism (4) is fixedly connected to the bottom of the support frame (22); the ratchet tightening mechanism (4) includes a fixing frame (41) and a handle (42); the front end of the fixing frame (41) is rotatably provided with a rotating shaft (43), and the end of the rotating shaft (43) is fixedly provided with a ratchet (44); the connecting belt (5) is wound around the rotating shaft (43), and a stop claw slider ( 45), a first spring (46) is provided between the rear end of the fixing frame (41) and the pawl slider (45), in a natural state, the front end of the pawl slider (45) is stuck on the gear teeth of the ratchet (44) under the action of the first spring (46), the front end of the handle (42) is rotatably connected to the rotating shaft (43), a pawl slider (47) is slidably provided in the middle part of the handle (42), a second spring (48) is provided between the pawl slider (47) and the rear end of the handle (42), in a natural state, the front end of the pawl slider (47) is stuck on the gear teeth of the ratchet (44) under the action of the second spring (48), and a space for the finger to move the pawl slider (47) and the pawl slider (45) backward is provided on the fixing frame (41) and the handle (42).

2. The belt-driven lifting table according to claim 1, characterized in that: A first slide groove (411) is provided on both sides of the middle portion of the fixing frame (41), and both sides of the stop claw slider (45) are slidably arranged in the first slide groove (411); a second slide groove (421) is provided on both sides of the middle portion of the handle (42), and both sides of the ratchet slider (47) are slidably arranged in the second slide groove (421).

3. The belt-driven lifting table according to claim 1, wherein: A first screw (412) and a second screw (422) are respectively provided at the rear end of the fixing frame (41) and the rear end of the handle (42), and the first spring (46) and the second spring (48) are respectively connected to the first screw (412) and the second screw (422).

4. The belt-driven lifting table according to claim 1, wherein: The area from the middle to the front end of the top of the handle (42) is a cavity structure, and the lower end of the pawl slider (47) is provided with a push plate (49), and the lower end of the push plate (49) is inserted into the cavity in the middle of the stop claw slider (45). When the pawl slider (47) moves backward, the push plate (49) can drive the stop claw slider (45) to move backward, so that the pawl slider (47) and the stop claw slider (45) are separated from the ratchet (44).

5. The belt-driven lifting table according to any one of claims 1 to 4, characterized in that: The support assembly (2) comprises three guide rods (21), which are arranged along three edges of a regular triangular prism. The bottom and top of the three guide rods (21) are connected together through a triangular support plate (23) and an upper support plate (24), respectively. The support frame (22) is a triangular prism structure, the lower end of which is slidably connected to the three guide rods (21) through a guide plate (25), and the upper end passes through a through hole in the middle of the upper support plate (24) and is slidably connected to it.

6. The belt-driven lifting table according to claim 5, characterized in that: The fixing frame (41) of the ratchet tightening mechanism (4) is mounted on the upper support plate (24).

7. The belt-driven lifting table according to claim 5, characterized in that: The base (1) comprises four support tubes (11) welded to each other at one end, each of the four support tubes (11) is provided with a roller (12) at the other end, a base plate (13) is provided on the support tubes (11), and the triangular support plate (23) is mounted on the base plate (13).

8. The belt-driven lifting table according to claim 5, characterized in that: A triangular top plate (26) is provided on the top of the support frame (22), and the table top (3) is fixed on the triangular top plate (26) by screws.

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