Motor anti-dragging device

Abstract

The utility model relates to a motor anti-dragging device which comprises a bed frame and two anti-dragging mechanisms, the bed frame comprises a bottom frame and a back frame, the back frame is installed above the bottom frame through a detachable rotating mechanism and is driven by a motor to rotate, the motor is installed in the bottom frame, the end of a push rod of the motor is connected with the bottom face of the back frame, and the number of the anti-dragging mechanisms is two. The anti-dragging mechanism comprises a limiting rod and a limiting pipe, the limiting rod is arranged on the side, close to the detachable rotating mechanism, of the back frame, one side of the limiting rod is connected with the back frame and rotates along with rotation of the back frame, and the limiting pipe is connected to the outer side wall of the bottom frame and located on the downward rotating track of the limiting rod; according to the utility model, through the cooperation of the limiting rod and the limiting pipe, when an operator or a maintainer manually operates the whole back frame, the limiting rod is attached to the limiting pipe when the whole back frame is lifted, and the limiting pipe is used for limiting, so that the situation that the push rod is pulled out of the motor to be scrapped due to 180-degree overturning of the whole back frame is prevented.

Description

Technical Field

[0001] This utility model relates to the field of bed frame technology, and in particular to a motor anti-drag device. Background Technology

[0002] For nursing beds and home beds, a motor typically drives the backrest to rotate and raise / lower, switching between sitting and sleeping positions. When the motor mechanism of the bed frame is damaged and needs repair, the motor's push rod loses its braking function on the backrest. When the backrest is manually lifted to repair the motor, it is prone to free rotation, dragging the motor push rod beyond its travel range, causing motor damage. This results in financial losses for the user due to repairs and creates safety hazards.

[0003] Therefore, this utility model proposes a motor anti-drag device to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a motor anti-drag device, which can prevent the back frame from dragging the motor push rod beyond its active stroke and causing motor damage when the motor device is damaged and needs to be repaired.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a motor anti-drag device, the innovation of which is: including

[0006] A bed frame, comprising a base frame and a back frame, wherein the back frame is mounted on top of the base frame via a detachable rotating mechanism and is driven to rotate by a motor, the motor being installed inside the base frame and the end of the motor's push rod being connected to the bottom surface of the back frame;

[0007] The anti-drag mechanism has two parts, which are symmetrically arranged on both sides of the bed frame. The anti-drag mechanism includes a limiting bar and a limiting tube. The limiting bar is located on the side of the back frame near the detachable rotating mechanism. One side of the limiting bar is connected to the back frame and rotates with the back frame. The limiting tube is connected to the outer wall of the base frame and is located on the downward rotation trajectory of the limiting bar.

[0008] Furthermore, the detachable rotating mechanism includes a connecting pipe, a connecting piece, and a bolt assembly;

[0009] The connecting tube is installed on the back frame. There are two connecting plates, which are respectively located on both sides of the connecting tube. The bottom of the connecting plate is connected to the base frame. There are two bolt assemblies, which are respectively located on both sides of the connecting tube. The bolt assembly includes a bolt and a nut. The nut is coaxially welded to the end of the connecting tube. The connecting plate has a through hole for the bolt to pass through. After the bolt passes through the through hole, it is threaded into the nut.

[0010] Furthermore, the bolt includes an integrally formed hexagonal end, a cylindrical section, and a threaded section arranged sequentially, with the cylindrical section passing through the through hole and the threaded section being threadedly connected to the nut.

[0011] Furthermore, the motor anti-drag device also includes a movable sleeve and a limiting plate. The limiting plate is installed on the outer wall of the movable sleeve, and the movable sleeve is detachably and movablely fitted on the outside of the limiting tube. The limiting plate and the limiting tube cooperate to form a limiting space for the limiting rod.

[0012] Furthermore, both the limiting tube and the movable sleeve are square tube structures.

[0013] The advantages of this utility model are:

[0014] This utility model's motor anti-drag device utilizes the cooperation of a limiting rod and a limiting tube. When the operator or maintenance personnel manually operates the entire back frame, the limiting rod and the limiting tube are in contact when the entire back frame is raised, and the limiting tube limits the movement, thereby preventing the entire back frame from rotating 180° and causing the push rod to be pulled out and the motor to be scrapped, thus protecting the motor.

[0015] The detachable rotating mechanism of this utility model, through the cooperation of connecting pipes, connecting plates, bolts and nuts, allows for easy operation when installing the back frame. It only requires placing the connecting pipe between the two connecting plates and installing the bolts on both sides. The mechanism is also characterized by high structural strength, resistance to damage, and low maintenance costs.

[0016] The bolt of this utility model is designed with a cylindrical section, which is inserted into the through hole of the connecting piece during bolt installation. This design helps to maintain the normal and smooth rotation of the back frame and does not affect the connection strength between the bolt and the nut, thus avoiding the frequent loosening of the bolt during normal use of the back frame.

[0017] This invention, by setting a movable sleeve and a limiting plate, allows the movable sleeve to be fitted onto the limiting tube when the limiting rod rotates with the back frame and comes into contact with the limiting tube. The limiting plate is then positioned on the side of the limiting rod away from the limiting tube, thereby restricting the limiting rod within the limiting space between the limiting plate and the limiting tube. This prevents the back frame from rotating freely downwards during maintenance, which would require maintenance personnel to use one hand to assist in fixing the back frame, thus facilitating maintenance operations.

[0018] Both the limiting tube and the movable sleeve of this utility model adopt a square tube structure, which makes it convenient for maintenance personnel to locate the corresponding position of the limiting plate when installing the movable sleeve. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the motor anti-drag device of this utility model.

[0021] Figure 2 This is an exploded view of the motor anti-drag device of this utility model.

[0022] Figure 3 This is a schematic diagram of the bolt of this utility model.

[0023] Figure 4 This is a cross-sectional view of the anti-drag mechanism of this utility model. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-4 As shown, this embodiment provides a motor anti-drag device, including a bed frame and an anti-drag mechanism 4.

[0026] The bed frame includes a base frame 1 and a back frame 2. The base frame 1 has a square frame structure. The back frame 2 includes a back frame 21, a back panel 22, and two reinforcing rods 23. The two reinforcing rods 23 are connected inside the back frame 21. The back panel 22 is installed on the top surface of the back frame 21. The back frame 2 is mounted above the base frame 1 via a detachable rotating mechanism 3 and is driven to rotate by a motor. The motor is installed inside the base frame 1, and the end of the motor's push rod is connected to the bottom surface of the back panel 22 of the back frame.

[0027] The detachable rotating mechanism 3 includes a connecting pipe 31, a connecting piece 32, and a bolt assembly. The connecting pipe 31 is mounted on the back frame 21. There are two connecting pieces 32, which are respectively disposed on both sides of the connecting pipe 31. The bottom of the connecting piece 32 is welded to the base frame 1. There are two bolt assemblies, which are respectively disposed on both sides of the connecting pipe 31. The bolt assembly includes a bolt 33 and a nut 34. The nut 34 is coaxially welded to the end of the connecting pipe 31. The connecting piece 32 has a through hole for the bolt 33 to pass through. After the bolt 33 passes through the through hole, it is threaded into the nut 34. In this embodiment, the bolt 33 includes an integrally formed internal hexagonal end 331, a cylindrical section 332, and a threaded section 333 arranged sequentially. When the bolt 33 is installed, the cylindrical section 332 passes through the through hole, and the threaded section 333 is threaded into the nut 34. This design helps to maintain the normal and smooth rotation of the back frame and will not affect the connection strength between the bolt and the nut, avoiding the frequent loosening of the bolt during normal use of the back frame.

[0028] Two anti-drag mechanisms 4 are symmetrically arranged on both sides of the bed frame. The anti-drag mechanism 4 includes a limiting rod 41, a limiting tube 42, a movable sleeve 43, and a limiting plate 44. The limiting rod 41 is located on the side of the back frame 2 near the detachable rotating mechanism 3. One side of the limiting rod 41 is connected to the back frame 2 and rotates synchronously with the back frame 2. The central axis of the limiting rod 41 is perpendicular to the central axis of the connecting tube 31. The limiting tube 42 is connected to the outer wall of the base frame 1 and is located on the downward rotation trajectory of the limiting rod 41. The central axis of the limiting tube 42 is perpendicular to the central axis of the limiting rod 41. The limiting plate 44 has an L-shaped structure and is welded to the outer wall of the movable sleeve 43. The movable sleeve 43 is detachably and movablely fitted on the outside of the limiting tube 42. The limiting plate 44 and the limiting tube 42 cooperate to form the limiting space of the limiting rod 41.

[0029] Working principle: When the operator or maintenance personnel manually operates the entire back frame 2, the limiting rod 41 and the limiting tube 42 are in contact when the entire back frame 2 is raised. The limiting tube 42 limits the movement, preventing the entire back frame 2 from rotating 180° and causing the push rod to be pulled out and the motor to be damaged, thus protecting the motor. Then, the movable sleeve 43 is put on the limiting tube 42, and the limiting plate 44 is placed on the side of the limiting rod 41 away from the limiting tube 42. This restricts the limiting rod 41 within the limiting space between the limiting plate 44 and the limiting tube 42, preventing the back frame 2 from rotating freely downwards during maintenance and avoiding the need for maintenance personnel to use one hand to assist in fixing the back frame, thus facilitating maintenance operations. To facilitate maintenance personnel in positioning the corresponding position of the limiting plate when installing the movable sleeve, both the limiting tube 42 and the movable sleeve 43 are made of square tube structure.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A motor anti-drag device, characterized in that: include A bed frame, comprising a base frame and a back frame, wherein the back frame is mounted on top of the base frame via a detachable rotating mechanism and is driven to rotate by a motor, the motor being installed inside the base frame and the end of the motor's push rod being connected to the bottom surface of the back frame; The anti-drag mechanism has two parts, which are symmetrically arranged on both sides of the bed frame. The anti-drag mechanism includes a limiting bar and a limiting tube. The limiting bar is located on the side of the back frame near the detachable rotating mechanism. One side of the limiting bar is connected to the back frame and rotates with the back frame. The limiting tube is connected to the outer wall of the base frame and is located on the downward rotation trajectory of the limiting bar.

2. The motor anti-drag device according to claim 1, characterized in that: The detachable rotating mechanism includes a connecting pipe, a connecting piece, and a bolt assembly; The connecting tube is installed on the back frame. There are two connecting plates, which are respectively located on both sides of the connecting tube. The bottom of the connecting plate is connected to the base frame. There are two bolt assemblies, which are respectively located on both sides of the connecting tube. The bolt assembly includes a bolt and a nut. The nut is coaxially welded to the end of the connecting tube. The connecting plate has a through hole for the bolt to pass through. After the bolt passes through the through hole, it is threaded into the nut.

3. The motor anti-drag device according to claim 2, characterized in that: The bolt comprises an integrally formed internal hexagonal end, a cylindrical section, and a threaded section arranged sequentially. The cylindrical section passes through a through hole, and the threaded section is threadedly connected to a nut.

4. The motor anti-drag device according to claim 1, characterized in that: The motor anti-drag device also includes a movable sleeve and a limiting plate. The limiting plate is installed on the outer wall of the movable sleeve. The movable sleeve is detachably and movablely fitted on the outside of the limiting tube. The limiting plate and the limiting tube cooperate to form a limiting space for the limiting rod.

5. The motor anti-drag device according to claim 4, characterized in that: Both the limiting tube and the movable sleeve are square tube structures.

Images