Self-locking arm mechanism and auxiliary cart

Abstract

This utility model relates to the field of outrigger structure technology, and in particular to a self-locking outrigger mechanism and auxiliary trolley. It includes a mounting base and an outrigger body. The outrigger body includes a control component, a first outrigger, and a second outrigger. The control component includes a control button, a first control switch, and a second control switch. A first locking component is installed inside the first outrigger, and a second locking component is installed inside the second outrigger. The first control switch is connected to the first locking component, and the second control switch is connected to the second locking component. The control button allows the outrigger body to move relative to each other. When the control button is not pressed, the outrigger body is locked. This utility model provides easy and smooth operation, meeting the needs of supporting equipment to work in any position or fixed location. After pressing and holding the control button, the external equipment is pulled to the desired position and angle, and then the control button is released to complete the suspension and fixation of the external equipment.

Description

Technical Field

[0001] This utility model relates to the field of outrigger structure technology, and in particular to a self-locking outrigger mechanism and an auxiliary trolley. Background Technology

[0002] Adjustable outrigger mechanisms are widely used in medical equipment, industrial instruments, and various auxiliary operating systems because they can flexibly support and position external equipment. These mechanisms typically contain multiple rotatable joints to achieve multi-degree-of-freedom position adjustment and must have a reliable locking function to ensure that the equipment is stably suspended in the target position during operation.

[0003] Currently common outrigger locking mechanisms have the following main shortcomings: First, multi-joint locking often requires the operator to unlock the independent locking devices of each joint individually (such as mechanical knobs, bolts, or independent electric / pneumatic locks). The operation is cumbersome and time-consuming, making it difficult to achieve rapid and synchronized position adjustments, thus reducing work efficiency. Second, some solutions using electric or hydraulic locking, while enabling centralized control, are complex in structure, bulky, and expensive, and rely on an external power source, posing safety hazards or functional failure risks in the event of power outages or malfunctions. Third, traditional purely mechanical locking devices typically lack continuous damping or supporting force in the unlocked state. When moving heavy equipment, the operator must overcome its own weight throughout the process, making operation laborious and difficult to control positioning accuracy. In the locked state, mechanical wear or gaps may cause slight displacement or shaking of the equipment, affecting stability.

[0004] Therefore, there is an urgent need for a self-locking outrigger mechanism that is simple in structure, easy to operate, and reliable in locking, which can simultaneously release the locking state of multiple joints under single-point operation, so as to achieve easy and smooth movement and precise positioning of the supported equipment. Summary of the Invention

[0005] This utility model addresses the problems of existing technologies by providing a self-locking outrigger mechanism and auxiliary trolley. The movement is easy and smooth, meeting the needs of supporting equipment to work in any position or fixed position. After pressing and holding the control button, the external equipment is pulled to the required position and angle, and then the control button is released to complete the suspension and fixation of the external equipment. The structure is novel and easy to use.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model provides a self-locking outrigger mechanism, which includes a mounting base and an outrigger body. The outrigger body includes a control component, a first outrigger, and a second outrigger. One end of the first outrigger is used to connect to an external device, and the other end of the first outrigger is rotatably connected to one end of the second outrigger. The other end of the second outrigger is movably connected to the mounting base. The control component includes a control button, a first control switch, and a second control switch. A first locking component is installed inside the first outrigger, and a second locking component is installed inside the second outrigger. The first control switch is connected to the first locking component, and the second control switch is connected to the second locking component. The control button is used to simultaneously pull the first control switch and the second control switch to unlock the first locking component and the second locking component respectively, so that the outrigger body can move relatively. When the control button does not pull the first control switch and the second control switch, the outrigger body is locked.

[0007] The second support arm has a rotating seat at one end, and a first connecting shaft and a second connecting shaft are respectively provided at the lower and upper ends of the rotating seat. One end of the first locking component is movably connected to one end of the inner wall of the first support arm, and the other end of the first locking component is connected to a first movable block, which is movably connected to the first connecting shaft. One end of the second locking component is connected to a second movable block, which is movably connected to the second connecting shaft, and the other end of the second locking component is movably connected to the mounting base.

[0008] The first control switch is connected to a first pull rope, and the second control switch is connected to a second pull rope. The first pull rope and the second pull rope are respectively connected to the control button. When the control button is pressed, the first control switch and the second control switch are pulled by the first pull rope and the second pull rope respectively, so that the first locking component and the second locking component are unlocked.

[0009] Both the first locking component and the second locking component are gas springs.

[0010] The mounting base includes a support base and a rotating base, with the rotating base rotatably mounted on the support base.

[0011] The supporting base has a positioning shaft column in the middle, and the lower end of the rotating base has a positioning shaft groove that cooperates with the positioning shaft column. The positioning shaft column is movably disposed in the positioning shaft groove, and a bushing is sleeved on the outer periphery of the positioning shaft column. The bushing abuts against the inner wall of the positioning shaft groove.

[0012] The positioning shaft column is provided with a connecting groove, and a connecting screw is installed in the connecting groove. A connecting screw hole is opened at the upper end of the inner wall of the positioning shaft groove. The upper end of the connecting screw passes through the connecting groove and is screwed into the connecting screw hole.

[0013] The rotating base has an adjustment gap on one side and two connecting ears on the other side. The two connecting ears are spaced apart and are located on both sides of the adjustment gap. One of the connecting ears is equipped with an adjustment screw, which passes through one of the connecting ears and is threaded to the other connecting ear.

[0014] This utility model also provides an auxiliary trolley, which includes a frame and the aforementioned self-locking support arm mechanism mounted on the frame.

[0015] The beneficial effects of this utility model are: In this invention, one end of the first support arm is used to connect to an external device for support, facilitating operation. The first and second supports of the support arm body can rotate relative to each other, and the second support arm can rotate relative to the mounting base. When the operator presses the control button, the first and second pull ropes are pulled simultaneously, causing the first and second control switches to open, unlocking the first and second locking components respectively, allowing the support arm body to move relative to each other. That is, the first support arm can rotate relative to the second support arm, and the second support arm can rotate relative to the mounting base. When the operator does not press the control button, and the control button does not pull the first and second pull ropes, that is, when the first and second control switches are not opened, the first and second control switches are in the closed state, locking the support arm body. The first and second supports are locked relative to each other and cannot rotate, and the second support arm is locked relative to the rotating base and cannot rotate. When in use, pressing the control button opens the first and second control switches, unlocking the gas spring lock and allowing the first and second arm joints to rotate freely. The gas spring itself provides resistance, further ensuring the safety of the connected external equipment. This resistance counteracts the weight of the equipment, allowing operators to easily move and secure various external devices. The operation is smooth and easy, meeting the needs of supporting equipment at any fixed position. Simply press and hold the control button, pull the external equipment to the desired position and angle, and then release the control button to complete the suspension and fixation of the external equipment. The design is novel and easy to use. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a self-locking support arm mechanism according to the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of a self-locking support arm mechanism according to the present invention.

[0018] Figure 3 This is an exploded view of the mounting base of this utility model.

[0019] exist Figures 1 to 3 The reference numerals in the figures include: 100. Mounting base; 200. Support arm body; 101. Rotating base; 102. Support base; 1. First support arm; 2. Second support arm; 3. Control button; 4. First control switch; 5. Second control switch; 6. First locking component; 7. Second locking component; 8. Rotating seat; 9. First connecting shaft; 10. Second connecting shaft; 11. First movable block; 12. Second movable block; 13. First pull rope; 14. Second pull rope; 15. Positioning shaft post; 16. Positioning shaft groove; 17. Bushing; 18. Connecting groove; 19. Connecting screw; 20. Adjusting screw; 21. Adjusting clearance; 22. Connecting ear. Detailed Implementation

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1 Embodiment 1 of this application provides a self-locking outrigger mechanism, such as... Figures 1 to 3 As shown, it includes a mounting base 100 and a support arm body 200. The support arm body 200 includes a control component, a first support arm 1, and a second support arm 2. One end of the first support arm 1 is used to connect to an external device, and the other end of the first support arm 1 is rotatably connected to one end of the second support arm 2. The other end of the second support arm 2 is movably connected to the mounting base 100. The control component includes a control button 3, a first control switch 4, and a second control switch 5. The first support arm 1 is equipped with a first locking component 6, and the second support arm 2 is equipped with a second locking component 7. The first control switch 4 is connected to the first locking component 6, and the second control switch 5 is connected to the second locking component 7. The control button 3 is used to simultaneously pull the first control switch 4 and the second control switch 5 to unlock the first locking component 6 and the second locking component 7 respectively, so that the support arm body 200 can move relative to each other. When the control button 3 does not pull the first control switch 4 and the second control switch 5, the support arm body 200 is locked. The first locking component 6 and the second locking component 7 are both gas springs.

[0022] Furthermore, a rotating seat 8 is provided at one end of the second support arm 2. A first connecting shaft 9 and a second connecting shaft 10 are respectively provided at the lower and upper ends of the rotating seat 8. One end of the first locking component 6 is movably connected to one end of the inner wall of the first support arm 1. The other end of the first locking component 6 is connected to a first movable block 11. The first movable block 11 is movably connected to the first connecting shaft 9. One end of the second locking component 7 is connected to a second movable block 12. The second movable block 12 is movably connected to the second connecting shaft 10. The other end of the second locking component 7 is movably connected to the mounting base.

[0023] The first control switch 4 is connected to a first pull rope 13, and the second control switch 5 is connected to a second pull rope 14. The first pull rope 13 and the second pull rope 14 are respectively connected to the control button 3. When the control button 3 is pressed, the first control switch 4 and the second control switch 5 are pulled by the first pull rope 13 and the second pull rope 14 respectively, so that the first locking component 6 and the second locking component 7 are unlocked.

[0024] Specifically, in this embodiment, one end of the first support arm 1 is used to connect to an external device to support the external device, making it convenient for operators to use; the first support arm 1 and the second support arm 2 of the support arm body 200 can rotate relative to each other, and the second support arm 2 can rotate relative to the mounting base 100. When the operator presses the control button 3, the first pull rope 13 and the second pull rope 14 are pulled at the same time, so that the first control switch 4 and the second control switch 5 are opened, and the first locking component 6 and the second locking component 7 are unlocked respectively, so that the support arm body 200 can move relative to each other, that is, the first support arm 1 can rotate relative to the second support arm 2, and the second support arm 2 can rotate relative to the mounting base 100. When the operator does not press the control button 3, and the control button 3 does not pull the first pull rope 13 and the second pull rope 14, that is, when the first control switch 4 and the second control switch 5 are not opened, the first control switch 4 and the second control switch 5 are in the closed state, so that the support arm body 200 is locked, the first support arm 1 and the second support arm 2 are relatively locked and cannot rotate, and the second support arm 2 and the rotating base 101 are relatively locked and cannot rotate. Under the above settings, pressing control button 3 opens the first control switch 4 and the second control switch 5 via the first pull rope 13 and the second pull rope 14, thus unlocking the gas spring lock (first control switch 4 and second control switch 5). The two joints of the first support arm 1 and the second support arm 2 can rotate freely. Furthermore, the gas spring itself has force resistance, further ensuring the safety of the connected external equipment. The resistance offsets the weight of the equipment, allowing operators to easily move and fix various external equipment. When used in this application, the movement is easy and smooth, meeting the needs of the supported equipment to reach any fixed position for operation. After pressing and holding control button 3, pulling the external equipment to the required position and angle and then releasing control button 3 completes the suspension and fixation of the external equipment. The structure is novel and easy to use.

[0025] In this embodiment, the mounting base 100 includes a support base 102 and a rotating base 101, with the rotating base 101 rotatably mounted on the support base 102. Specifically, the rotating base 101 can rotate relative to the support base 102, and the other end of the second support arm 2 is movably connected to the rotating base 101. The rotating base 101 can rotate 360° relative to the support base 102 to adjust the overall orientation of the support arm body 200 and improve its flexibility of use. The support base 102 is secured to an external bracket or medical cart by external screws.

[0026] In this embodiment, a positioning shaft post 15 is provided in the middle of the support base 102, and a positioning shaft groove 16 that mates with the positioning shaft post 15 is provided at the lower end of the rotating base 101. The positioning shaft post 15 is movably disposed within the positioning shaft groove 16, and a bushing 17 is fitted around the outer periphery of the positioning shaft post 15. The bushing 17 abuts against the inner wall of the positioning shaft groove 16. A connecting groove 18 is provided through the positioning shaft post 15, and a connecting screw 19 is installed within the connecting groove 18. A connecting screw hole is provided at the upper end of the inner wall of the positioning shaft groove 16, and the upper end of the connecting screw 19 passes through the connecting groove 18 and is screwed into the connecting screw hole. Specifically, with the cooperation of the positioning shaft column 15 and the positioning shaft groove 16, the rotating base 101 is positioned on the support base 102. Furthermore, with the above configuration, the bushing 17 can reduce the wear between the rotating base 101 and the support base 102. The bushing 17 plays a protective and anti-slip role, and with the action of the connecting screw 19, it prevents the rotating base 101 from detaching from the support base 102.

[0027] In this embodiment, the rotating base 101 has an adjustment gap 21 on one side, and two connecting ears 22 are also provided on one side of the rotating base 101. The two connecting ears 22 are spaced apart and are located on opposite sides of the adjustment gap 21. An adjusting screw 20 is installed on one of the connecting ears 22, and the adjusting screw 20 passes through one of the connecting ears 22 and is threadedly connected to the other connecting ear 22. Specifically, with the above configuration, turning the adjusting screw 20 can adjust the distance between the two connecting ears 22, thereby adjusting the distance of the adjustment gap 21. This allows the rotating base 101 to better clamp the positioning shaft 15, increasing the clamping force. In other words, the clamping force between the rotating base 101 and the positioning shaft 15 is adjustable, preventing loosening.

[0028] Example 2 In the second embodiment of this application, an auxiliary trolley is provided, which includes a frame and the self-locking support arm mechanism mounted on the frame.

[0029] 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 changes or modifications 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 modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A self-locking boom mechanism, characterized by: The device includes a mounting base and a support arm body. The support arm body includes a control component, a first support arm, and a second support arm. One end of the first support arm is used to connect to an external device, and the other end of the first support arm is rotatably connected to one end of the second support arm. The other end of the second support arm is movably connected to the mounting base. The control component includes a control button, a first control switch, and a second control switch. A first locking component is installed inside the first support arm, and a second locking component is installed inside the second support arm. The first control switch is connected to the first locking component, and the second control switch is connected to the second locking component. The control button is used to simultaneously pull the first control switch and the second control switch to unlock the first locking component and the second locking component respectively, allowing the support arm body to move relative to each other. When the control button does not pull the first control switch and the second control switch, the support arm body is locked.

2. A self-locking boom mechanism according to claim 1, characterized in that: One end of the second support arm is provided with a rotating seat. The lower end and the upper end of the rotating seat are respectively provided with a first connecting shaft and a second connecting shaft. One end of the first locking component is movably connected to one end of the inner wall of the first support arm. The other end of the first locking component is connected to a first movable block. The first movable block is movably connected to the first connecting shaft. One end of the second locking component is connected to a second movable block. The second movable block is movably connected to the second connecting shaft. The other end of the second locking component is movably connected to the mounting base.

3. A self-locking boom mechanism according to claim 1, characterized in that: A first pull rope is connected to the first control switch, and a second pull rope is connected to the second control switch. The first pull rope and the second pull rope are respectively connected to the control button. When the control button is pressed, the first control switch and the second control switch are pulled by the first pull rope and the second pull rope respectively, so that the first locking component and the second locking component are unlocked.

4. The self-locking support arm mechanism according to claim 1, characterized in that: Both the first locking component and the second locking component are gas springs.

5. A self-locking boom mechanism according to claim 1, characterized in that: The mounting base includes a support base and a rotating base, with the rotating base rotatably mounted on the support base.

6. A self-locking boom mechanism according to claim 5, wherein: A positioning shaft is provided in the middle of the support base, and a positioning groove is provided at the lower end of the rotating base to cooperate with the positioning shaft. The positioning shaft is movably disposed in the positioning groove, and a bushing is sleeved on the outer periphery of the positioning shaft, and the bushing abuts against the inner wall of the positioning groove.

7. A self-locking boom mechanism according to claim 6, wherein: The positioning shaft is provided with a connecting groove, and a connecting screw is installed in the connecting groove. A connecting screw hole is opened at the upper end of the inner wall of the positioning shaft groove. The upper end of the connecting screw passes through the connecting groove and is screwed into the connecting screw hole.

8. A self-locking boom mechanism according to claim 6, characterized in that: An adjustment gap is provided on one side of the rotating base, and two connecting ears are also provided on one side of the rotating base. The two connecting ears are spaced apart and are located on both sides of the adjustment gap. An adjustment screw is installed on one of the connecting ears, and the adjustment screw passes through one of the connecting ears and is threaded to the other connecting ear.

9. An auxiliary trolley, characterized in that: Includes a frame and a self-locking outrigger mechanism as described in any one of claims 1-8 mounted on the frame.

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