Limiting mechanism of telescopic movable workbench

Abstract

The utility model discloses a limiting mechanism of a telescopic movable workbench. The limiting mechanism comprises a fixed table frame, a pedal locking rod and a movable table frame with wheels at the bottom. Two upper supporting rods and two lower supporting rods are perpendicularly arranged at the four corners of the front side face of the movable table frame. The two upper supporting rods are fixed to the table top, and a first positioning rod is vertically fixed to the rear end of any supporting rod. A lever shaft rod arranged in the left-right direction is fixed to the fixed table frame, and the pedal locking rod and the lever shaft rod are perpendicularly crossed and hinged. A first locking rod and a second locking rod are fixed on the pedal locking rod; at the beginning, the bottom edge of the front side face is hooked by the second locking rod, the rear end of the pedal locking rod is forcibly treaded down, the second locking rod is turned upwards, the movable table frame can be pulled forwards in place from the movable table frame to enable the first positioning rod to be located in front of the first locking rod, and the first positioning rod stops the movable table frame from retreating when the rear end of the pedal locking rod is loosened. The limiting mechanism achieves the initial position locking function and the retaining function after drawing is finished.

Description

Technical Field

[0001] This utility model relates to the field of workbenches, and in particular to a limiting mechanism for a retractable and movable workbench. Background Technology

[0002] The workshop requires more and more functional workbenches. Due to storage needs, movable table frames can be pulled forward from fixed table frames. Generally, the operator stands or sits behind the fixed table frame, assembles and processes the raw materials in the storage boxes of the fixed table frame into finished products, and then places the finished products on the tabletop of the movable table frame. After the work is finished, the movable table frame should be pulled back and covered onto the fixed table frame, thereby reducing the floor space occupied by the entire workbench.

[0003] When the movable table frame retracts to return to the fixed table frame, both the movable and fixed table frames must have a locking mechanism to prevent accidental extension of the movable frame during transfer or transport. Additionally, once the movable table frame is fully extended, it must prevent it from retracting and obstructing the operator's access to the storage compartment. Current technology typically uses two separate locking mechanisms to achieve these two functions, requiring the operator to move away from the rear of the fixed table frame. This increases operator mobility, fatigue, and workshop risk.

[0004] Therefore, a limiting mechanism is needed that not only simultaneously achieves the initial position locking and the anti-reverse function after the pull-out ends, but also reduces the operator's movement frequency. Utility Model Content

[0005] The purpose of this invention is to provide a limiting mechanism for a retractable mobile worktable that achieves initial position locking of the movable table frame and anti-reverse function after the pull-out is completed, while also reducing the frequency of operator movement.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A limiting mechanism for a retractable mobile workbench includes a fixed table frame, a foot locking rod near the bottom of the fixed table frame, and a movable table frame with wheels at the bottom.

[0008] The movable table frame includes an upright front side, with two upper support rods and two lower support rods perpendicularly at the four corners of the front side;

[0009] The two upper support rods are used to fix the tabletop, and the rear end of any one of the lower support rods is vertically fixed with a first positioning rod;

[0010] The movable table frame and the fixed table frame are slidably connected in the front-to-back direction;

[0011] The fixed table frame is fixed with a lever shaft arranged in the left and right direction, and the foot pedal locking rod is perpendicular to and hinged to the lever shaft;

[0012] A first locking rod is fixed on the foot pedal locking rod, and a second locking rod is fixed at the front end of the foot pedal locking rod. The first locking rod is located between the lever shaft and the second locking rod.

[0013] Initially, the bottom edge of the front side is hooked by the second locking rod. When the rear end of the foot pedal locking rod is pressed down, the second locking rod flips upward, and the movable table frame can be pulled forward from the fixed table frame so that the first positioning rod is in front of the first locking rod. Releasing the rear end of the foot pedal locking rod causes the first positioning rod to prevent the movable table frame from moving backward.

[0014] Furthermore, the first locking rod is arranged at an angle from top to bottom along the front to back direction.

[0015] Furthermore, the bottom of the fixed table frame is equipped with multiple casters.

[0016] Furthermore, sliders are fixed to the two upper support rods and the two lower support rods respectively, and four sliding rods that are slidably matched with the sliders are fixed to the fixed table frame.

[0017] Furthermore, a second positioning rod is vertically fixed to the rear end of any of the lower support rods, and the second positioning rod is located between the first positioning rod and the bottom edge of the front side.

[0018] In the above technical solution, the present invention has the following beneficial effects:

[0019] First, it is easy to operate: the fixed table frame and the movable table frame can be unlocked by stepping on the pedal, and the operator can operate while standing without having to move. When the movable table frame is pulled out, simply release your foot to prevent the movable table frame from moving backward. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the structure of the movable table frame disclosed in this utility model;

[0022] Figure 2 This is a schematic diagram of the limiting mechanism during the pull-out process disclosed in this utility model.

[0023] Figure 3This is a schematic diagram of the initial time limit mechanism disclosed in this utility model;

[0024] Figure 4 This is a schematic diagram of the limiting mechanism after the pull-out process disclosed in this utility model.

[0025] Figure label:

[0026] The components include: movable table frame 1, first positioning rod 11, lower support rod 12, fixed table frame 2, lever shaft 21, foot pedal locking rod 3, first locking rod 31, second locking rod 32, and slider 4. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] It should be noted that the terms "above," "one end," "up," etc. used in this document indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Similar expressions are only for illustrative purposes and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "part," "two parts," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] like Figure 1-4 The limiting mechanism of a telescopic mobile workbench shown includes a fixed table frame 2, a foot pedal locking rod 3 near the bottom of the fixed table frame, and a movable table frame 1 with wheels at the bottom.

[0030] The movable table frame 1 includes an upright front side, with two upper support rods and two lower support rods 12 vertically positioned at each of the four corners of the front side; the two upper support rods and two lower support rods 12 face the fixed table frame 2. The two upper support rods are used to fix the tabletop, and a first positioning rod 11 is vertically fixed to the rear end of any one of the lower support rods 12.

[0031] Initially, the tabletop on the movable table frame can be positioned above the fixed table frame. The movable table frame and the fixed table frame 2 are stored together, with the tabletop located on the fixed table frame.

[0032] The movable table frame 1 and the fixed table frame 2 are slidably connected in the front-to-back direction; when working, the movable table frame 1 can be pulled forward, and the tabletop moves away from the fixed table frame 2, so that the storage platform required by the operator in the fixed table frame 2 is exposed.

[0033] The fixed table frame 2 is a frame structure, on which a lever shaft 21 arranged in the left and right direction is fixed. The foot pedal locking rod 3 is perpendicular to and hinged to the lever shaft 21. The lever shaft 21 is located on the rear side of the bottom end of the fixed table frame 2. The foot pedal locking rod 3 is equivalent to a lever that can swing back and forth around the lever shaft 21.

[0034] A first locking rod 31 is fixed to the foot pedal locking rod 3, and a second locking rod 32 is fixed to the front end of the foot pedal locking rod 3. The first locking rod 31 is located between the lever shaft 21 and the second locking rod 32. The foot pedal locking rod 3 is generally horizontally F-shaped, and the front end of the foot pedal locking rod 3 is hook-shaped. When the foot is pressed down on the rear end of the foot pedal locking rod 3, both the second locking rod 32 and the first locking rod 31 will rotate upward.

[0035] Initially, the foot pedal locking lever 3 is supported by the lever shaft 21, and its front end can rest on the front edge of the bottom of the fixed table frame. The bottom edge of the front side of the movable table frame is hooked by the second locking lever 32. By pressing down on the rear end of the foot pedal locking lever 3, the second locking lever 32 flips upward, allowing the bottom edge of the front side to move forward, and the movable table frame 1 can move forward from the fixed table frame 2. When the movable table frame is pulled out to its final position, the first positioning lever 11 is located in front of the first locking lever 31. Releasing the rear end of the foot pedal locking lever 3 causes the first positioning lever 11 to fall, preventing the movable table frame 1 from moving backward. To return the movable table frame to its initial position, pressing down on the rear end of the foot pedal locking lever 3 causes the first positioning lever 11 to move upward away from the first positioning lever 3. For a smoother return, the movable table frame can be pulled forward a certain distance further.

[0036] Preferably, the first locking rod 31 is arranged at an angle from top to bottom and from front to back. This ensures that when the first positioning rod 11 moves upward away from the first positioning rod 1, it will not hit the first positioning rod 1, and the movable table frame does not need to be pulled forward a certain distance.

[0037] Preferably, the bottom of the fixed table frame 2 is equipped with multiple casters, facilitating the overall movement of the extendable worktable.

[0038] Preferably, sliders 4 are fixed to the two upper support rods and the two lower support rods 12, and four sliding rods that slidably engage with the sliders 4 are fixed to the fixed table frame 2. The sliding rods are oriented in the front-to-back direction, realizing the sliding connection between the movable table frame and the fixed table frame.

[0039] Preferably, a second positioning rod is vertically fixed to the rear end of any one of the lower support rods 12, and the second positioning rod is located between the first positioning rod 11 and the bottom edge of the front side. In this way, the movable table frame has an additional anti-backward positioning point between the initial position and the pulled-out end position, and the second positioning rod of the movable table frame can be pulled out in front of the first locking rod 31 to prevent the movable table frame from moving backward.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A limiting mechanism for a retractable movable worktable, characterized in that, Includes a fixed table frame (2), a foot pedal locking rod (3) near the bottom of the fixed table frame (2), and a movable table frame (1) with wheels at the bottom; The movable table frame (1) includes an upright front side, and two upper support rods and two lower support rods (12) are vertically positioned at the four corners of the front side. The two upper support rods are used to fix the tabletop, and the rear end of any one of the lower support rods (12) is vertically fixed with a first positioning rod (11). The movable table frame (1) and the fixed table frame (2) are slidably connected in the front-to-back direction; The fixed table frame (2) is fixed with a lever shaft (21) arranged in the left and right direction. The foot pedal locking rod (3) is perpendicular to the lever shaft (21) and hinged. A first locking rod (31) is fixed on the foot pedal locking rod (3), and a second locking rod (32) is fixed at the front end of the foot pedal locking rod (3). The first locking rod (31) is located between the lever shaft (21) and the second locking rod (32). Initially, the bottom edge of the front side is hooked by the second locking rod (32). When the rear end of the foot pedal locking rod (3) is stepped down, the second locking rod (32) flips upward, and the movable table frame (1) can be pulled forward from the fixed table frame (2) so that the first positioning rod (11) is in front of the first locking rod (31). When the rear end of the foot pedal locking rod (3) is released, the first positioning rod (11) blocks the movable table frame (1) from moving backward.

2. The limiting mechanism for a retractable movable worktable according to claim 1, characterized in that, The first locking rod (31) is arranged at an angle from top to bottom and from front to back.

3. The limiting mechanism for a retractable movable worktable according to claim 1, characterized in that, The bottom of the fixed table frame (2) is equipped with multiple casters.

4. The limiting mechanism for a retractable movable worktable according to claim 1, characterized in that, Slider (4) is fixed on each of the two upper support rods and the two lower support rods (12), and four sliding rods that slide with the slider (4) are fixed on the fixed table frame (2).

5. The limiting mechanism for a retractable movable worktable according to claim 1, characterized in that, A second positioning rod is vertically fixed to the rear end of any of the lower support rods (12), and the second positioning rod is located between the first positioning rod (11) and the bottom edge of the front side.

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