Indoor personnel anti-falling multi-arm folding safety protection grabbing and holding device

Abstract

The utility model provides an indoor personnel anti -falling multi -arm folding type safety protection grab device belongs to the safety technical field, including installation base, multiple folding rotary arms, spline pin shaft, grab net, the installation base with the one end of the first folding rotary arm of multiple folding rotary arms is connected through spline pin shaft, to make the first folding rotary arm can rotate along the installation base, the end of multiple folding rotary arms is connected through spline pin shaft between, to make multiple folding rotary arms can rotate each other between, the quantity of grab net with the quantity of multiple folding rotary arms is same, and the upper end of every grab net is fixed connection with every folding rotary arm respectively, and the grab net is apart from the wall surface between the preset distance. When the personnel is in the indoor accident fall, the area of grab support object is big, and it is easy to hold up. Meanwhile adopts multiple folding rotary arms, can rotate according to the need of different personnel, improves the flexibility of use.

Description

Technical Field

[0001] This utility model relates to the field of safety technology, specifically to an indoor multi-arm folding safety protection and grabbing device for preventing people from falling. Background Technology

[0002] In China, to prevent slipping and falling while showering or experiencing dizziness after using the toilet, people often install handrails in suitable locations on bathroom or toilet walls for grabbing in case of a fall. Currently, most handrails are single cylindrical structures. However, in reality, when a person falls, their body is in motion, making it difficult to secure the handrail during the fall; or, even if they do grab it, their weight can affect the grip, causing the hand to slip off and resulting in injury. Summary of the Invention

[0003] In view of this, the present invention provides an indoor multi-arm folding safety protection grabbing device to prevent people from falling, so as to solve the technical problem of injury caused by not being able to grab the handrail properly or slipping off the handrail after grabbing it.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An indoor multi-arm folding safety grabbing device for preventing falls includes a mounting base, multiple folding rotating arms, splined pins, and grab nets. The mounting base is connected to one end of a primary folding rotating arm of the multiple folding rotating arms via the splined pins, allowing the primary folding rotating arm to rotate along the mounting base. The ends of the multiple folding rotating arms are connected to each other via the splined pins, allowing the multiple folding rotating arms to rotate relative to each other. The number of grab nets is the same as the number of folding rotating arms, and the upper end of each grab net is fixedly connected to each folding rotating arm, with a preset distance between the grab nets and the wall surface.

[0006] Preferably, the mounting base includes a base plate and a first double trunnion bushing; the base plate has mounting through holes around its perimeter to mount the device as a whole, and the first double trunnion bushing is fixed to one side of the base plate by a rib; the first double trunnion bushing includes a first upper bushing and a first lower bushing, and the first upper bushing and the first lower bushing are arranged parallel to each other on the base plate at a preset interval.

[0007] Preferably, the width of each of the plurality of folding rotating arms decreases sequentially along the length direction, so that the two ends of the folding rotating arm form a large end and a small end; wherein, the large end of the first-stage folding rotating arm is connected to the first double-ear bushing through the spline pin; the small end of the first-stage folding rotating arm is connected to the large end of the next folding rotating arm through the spline pin, and so on, so as to connect the ends of the plurality of folding rotating arms through the spline pin.

[0008] Preferably, the large end of the folding rotating arm is provided with a single bushing, and the inner wall of the bushing is provided with a light hole; the small end of the other folding rotating arms, except for the last folding rotating arm, is provided with a second double-ear bushing, and the single bushing of the first folding rotating arm and the second double-ear bushing of the second folding rotating arm are connected by a spline pin to realize the connection between the two adjacent folding rotating arms.

[0009] Preferably, the inner hole of the first upper bushing is provided with a splined inner hole, the inner hole of the first lower bushing is provided with a smooth hole, the upper end of the splined pin is connected to the splined inner hole, and the lower part of the splined pin is connected to the smooth hole.

[0010] Preferably, the second double-ear bushing includes a second upper bushing and a second lower bushing, the second upper bushing and the second lower bushing are respectively disposed on the upper and lower sides of the small end, and the inner hole of the second upper bushing is provided with a spline inner hole, and the inner hole of the second lower bushing is provided with a smooth hole.

[0011] Preferably, the splined pin is provided with a splined shaft, a smooth shaft, and a connecting thread from top to bottom; the outer diameter of the splined shaft is larger than the outer diameter of the smooth shaft and the connecting thread, and the splined shaft and the smooth shaft form an annular platform surface; wherein, the splined shaft is connected to the splined inner hole, and the smooth shaft is connected to the smooth hole of the single bushing, the smooth hole of the first lower bushing, and the smooth hole of the second lower bushing.

[0012] Preferably, the multi-arm folding safety protection grabbing device further includes a tension adjustment cap, which is connected to the connecting thread.

[0013] Preferably, the multi-arm folding safety protection grabbing device further includes a sealing cover, which is installed on the upper end face of the first upper bushing or the second upper bushing.

[0014] Preferably, the indoor personnel fall prevention multi-arm folding safety protection grabbing device further includes a connecting ring; one end of the connecting ring is connected to the plurality of folding rotating arms, and the other end is connected to the grab net, so as to fix the grab net to the plurality of folding rotating arms.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention integrates a mounting base, multiple folding rotating arms, splined pins, and a grab net into a single unit. The entire device is then mounted on a suitable wall location indoors via the mounting base. The grab net, installed beneath the multiple folding rotating arms, increases the grab area, allowing individuals to accurately grasp the net during a fall. Furthermore, the net is flexible, ensuring that fingers are inserted into the mesh, preventing slippage. This allows individuals to maintain balance and avoid injury during a fall. Additionally, the multiple folding rotating arms allow for rotation to meet various grab needs, increasing flexibility and effectively preventing falls and injuries after showering or using the toilet. It also addresses the difficulty some bedridden individuals face in getting out of bed. Attached Figure Description

[0017] Figure 1 This is a partial sectional view of the front view of the indoor personnel fall prevention multi-arm folding safety protection grabbing device of this utility model.

[0018] Figure 2 This is a top view of the overall structure of the indoor personnel fall prevention multi-arm folding safety protection and grabbing device of this utility model.

[0019] Figure 3 This is a partial sectional side view of the overall structure of the indoor personnel fall prevention multi-arm folding safety protection and grabbing device of this utility model.

[0020] Figure 4 A partial sectional view of the main view of the mounting base structure.

[0021] Figure 5 A top partial sectional view of the mounting base structure.

[0022] Figure 6 A bottom view of the mounting base structure.

[0023] Figure 7 This is a partial sectional view of the main view of the first-stage folding rotating arm.

[0024] Figure 8 This is a front sectional view of the two-stage folding rotating arm.

[0025] Figure 9 This is a partial sectional view of the front view of the three-stage folding rotating arm.

[0026] Figure 10 This is the front sectional view of the plug.

[0027] Figure 11This is a schematic diagram of the spline pin structure.

[0028] Figure 12 This is a schematic diagram of the folding rotating arm's movement.

[0029] In the diagram: mounting base 10, base plate 11, mounting through hole 111, rib 12, first upper bushing 13, first lower bushing 14, spline inner hole 15, first annular groove 16, smooth hole 17, second annular groove 18, multiple folding rotating arms 20, first-stage folding rotating arm 20a, first-stage single bushing 21a, first-stage smooth hole 22a, first-stage second upper bushing 23a, first-stage second lower bushing 24a, first-stage spline inner hole 25a, first-stage lower smooth hole 26a, first-stage first annular groove 27a, first-stage second annular groove 28a, second-stage folding rotating arm 20b, second-stage single bushing 21b, second-stage... 22b, second-stage upper bushing 23b, second-stage lower bushing 24b, second-stage spline inner hole 25b, second-stage lower blanking hole 26b, second-stage first annular groove 27b, second-stage second annular groove 28b, third-stage folding rotating arm 20c, third-stage single bushing 21c, third-stage blanking hole 22c, spline pin 30, spline shaft 31, blanking shaft 32, connecting thread 33, annular platform surface 34, grabbing mesh 40, connecting mesh ring 41, mesh hole 42, connecting ring 50, tension adjustment cap 60, inner hole thread 61, circular boss 62, plug 70, slot 71, sealing cover 80, boss 81, gasket 90. Detailed Implementation

[0030] The technical solutions and effects of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0031] Please refer to Figure 1 and Figure 2 An indoor multi-arm folding safety protection grabbing device for preventing falls includes a mounting base 10, multiple folding rotating arms 20, splined pins 30, and grab nets 40. The mounting base 10 is connected to one end of the first-stage folding rotating arm 20a of the multiple folding rotating arms 20 via splined pins 30, so that the first-stage folding rotating arm 20a can rotate along the mounting base 10. The ends of the multiple folding rotating arms 20 are connected to each other via splined pins 30, so that the multiple folding rotating arms 20 can rotate relative to each other. The number of grab nets 40 is the same as the number of multiple folding rotating arms 20, and the upper end of each grab net 40 is fixedly connected to each folding rotating arm 20, and the grab nets 40 are spaced at a preset distance from the wall.

[0032] This invention integrates a mounting base 10, multiple folding rotating arms 20, a splined pin 30, and a grab net 40 into a single unit. The entire device is then mounted on a suitable wall location indoors via the mounting base 10. The grab net 40, installed beneath the multiple folding rotating arms 20, increases the grab area, allowing individuals to accurately grasp the net during a fall. Furthermore, the net is flexible, ensuring that fingers are inserted into the mesh, preventing slippage. This allows individuals to maintain balance and avoid injury during a fall. Additionally, the multiple folding rotating arms 20 can rotate to meet different grab needs, increasing flexibility and effectively preventing falls and injuries after showering or using the toilet. It also effectively addresses the difficulty some bedridden individuals face in getting out of bed.

[0033] In some implementations, the device can be installed on a suitable indoor wall, either in a bathroom or shower room, or on the side of the bedside in a bedroom, depending on the needs of different individuals. If used in a bathroom or shower room, multiple folding rotating arms can rotate individually to surround the person, maximizing the chances of someone accidentally falling and grabbing the net to regain balance and prevent injury. If used at the bedside in a bedroom, the multiple folding rotating arms can be folded and placed in front of a sleeping elderly person or patient, making it easier for them to grab onto and get out of bed; alternatively, they can be extended into a straight line to allow elderly people or patients with mobility issues to use them for support and to move around.

[0034] Further, please see Figures 4 to 6 The mounting base 10 includes a base plate 11 and a first double-ear bushing. The base plate 11 has mounting through holes 111 around its perimeter for mounting the entire device. The first double-ear bushing is fixed to one side of the base plate 11 by a rib 12. The first double-ear bushing includes a first upper bushing 13 and a first lower bushing 14, which are parallel to each other on the base plate 11 at a predetermined interval. Specifically, the first upper bushing 13 and the first lower bushing 14 are mounted on the upper and lower sides of one side of the base plate 11, with the center line of the first upper bushing 13 coinciding with the center line of the first lower bushing 14. One end of the rib 12 is fixed to the outer wall of the first upper bushing 13 or the first lower bushing 14, and the other end is fixed to the surface of the base plate 11, thereby fixing the first upper bushing 13 and the first lower bushing 14 to the mounting base 10. Bolts or screws can be passed through the mounting holes 111 and fixed to the wall at a suitable location indoors, thereby installing the entire indoor personnel fall prevention multi-arm folding safety protection grab device on the wall.

[0035] Furthermore, the width of each of the multiple folding rotating arms 20 decreases sequentially along its length, forming a large end and a small end at both ends of the folding rotating arm. The large end of the first-stage folding rotating arm 20a is connected to the first double trunnion sleeve via a spline pin 30. The small end of the first-stage folding rotating arm 20a is connected to the large end of the next folding rotating arm via a spline pin 30, and so on, so that the ends of the multiple folding rotating arms are connected via spline pins 30, allowing the folding rotating arms to rotate around the spline pins 30.

[0036] For ease of description below, this utility model uses a device with three folding rotating arms in a specific embodiment to illustrate a multi-arm folding safety protection and grabbing device for preventing indoor personnel from falling. However, the number of multiple folding rotating arms is not limited. The number of multiple folding rotating arms can be two, three, four, etc., depending on the actual needs of the indoor personnel.

[0037] In some implementations, please refer to Figure 2 The multiple folding rotating arms 20 include a first-stage folding rotating arm 20a, a second-stage folding rotating arm 20b, and a third-stage folding rotating arm 20c. The large end of the first-stage folding rotating arm 20a is connected to the first double trunnion sleeve via a splined pin 30. The small end of the first-stage folding rotating arm 20a is connected to the large end of the second-stage folding rotating arm 20b via a splined pin 30. The small end of the second-stage folding rotating arm 20b is connected to the large end of the third-stage folding rotating arm 20c via a splined pin 30. The small end of the third-stage folding rotating arm 20c is sealed with a plug 70, so that the first-stage folding rotating arm 20a, the second-stage folding rotating arm 20b, and the third-stage folding rotating arm 20c can all be dragged and rotated by each other.

[0038] In some embodiments, the first-stage folding rotating arm 20a, the second-stage folding rotating arm 20b, and the third-stage folding rotating arm 20c are all made of flat profiles with curved top and bottom edges. The rotation directions of the three folding rotating arms are as follows: Figure 12As shown, the three folding rotating arms can be dragged together to form different angles. When the three folding rotating arms are in their original positions, they are parallel to each other, and the three faces of the grab net 40 are also parallel to each other. When the three folding rotating arms are dragged together to form an angle, the three faces of the grab net 40 also form the same angle. When the three folding rotating arms are dragged into a straight line, the unfolded area of ​​the grab net 40 is the largest. For example, if used in a toilet or bathroom, the first-stage folding rotating arm 20a of the indoor personnel fall prevention multi-arm folding safety protection grab device can rotate 180 degrees, and the second-stage folding rotating arm 20b and the third-stage folding rotating arm 20c can each rotate about 320 degrees. This allows the three folding rotating arms to surround the person in motion (such as while showering) from three sides, maximizing the chances of a person accidentally falling and grabbing the grab net 40 to balance their body and prevent injury. If used at the head of the bed in the bedroom, the three folding rotating arms can be folded and extended to place the grab net 40 of the third folding arm 20c in front of the sleeping elderly or patient, making it easier for the sleeping elderly or patient to grab and get up; or they can be stretched into a straight line to allow some elderly or patients with mobility difficulties to grab and walk back and forth within a certain distance.

[0039] Furthermore, the large end of the folding rotating arm is provided with a single bushing, and the inner wall of the bushing has a clear hole; the small end of the other folding rotating arms, except for the last one, is provided with a second double-ear bushing. The single bushing of the preceding folding rotating arm and the second double-ear bushing of the following folding rotating arm are connected by a splined pin 30 to achieve the connection between adjacent folding rotating arms. Specifically, a detailed explanation is given using three folding rotating arms as an example; please refer to [link to relevant documentation]. Figure 7 The large end of the primary folding rotating arm 20a is provided with a primary single bushing 21a. A primary clear hole 22a is opened on the inner wall of the bushing. The primary single bushing 21a is inserted between the first upper bushing 13 and the first lower bushing 14, and the first upper bushing 13, the first lower bushing 14, and the primary single bushing 21a are connected by a splined pin 30 to achieve a rotatable connection between the primary folding rotating arm 20a and the mounting base 10. Please refer to [link / reference]. Figure 7 and Figure 8 The small end of the first-stage folding rotating arm 20a is provided with a first-stage second double-eared bushing, and the large end of the second-stage folding rotating arm 20b is provided with a second-stage single bushing 21b. The inner wall of the bushing has a second-stage clear hole 22b. The second-stage single bushing 21b is inserted between the first-stage and second double-eared bushings, and the second-stage single bushing 21b and the first-stage second double-eared bushing are connected by a splined pin 30 to achieve a rotatable connection between the first-stage folding rotating arm 20a and the second-stage folding rotating arm 20b. Similarly, please refer to... Figure 8 and Figure 9The small end of the secondary folding rotating arm 20b is provided with a secondary second double trunnion sleeve, and the large end of the tertiary folding rotating arm 20c is provided with a tertiary single shaft sleeve 21c. A tertiary light hole 22c is opened on the inner wall of the shaft sleeve. The tertiary single shaft sleeve 21c is inserted between the secondary second double trunnion sleeves, and the tertiary single shaft sleeve 21c and the secondary second double trunnion sleeve are connected by a spline pin 30 to achieve a rotatable connection between the secondary folding rotating arm 20b and the tertiary folding rotating arm 20c. The rotating arm of the secondary folding rotating arm 20b and the secondary single shaft sleeve 21b are set at a 90-degree angle; the rotating arm of the tertiary folding rotating arm 20c and the tertiary single shaft sleeve 21c are also set at a 90-degree angle. This ensures that the three folding rotating arms remain parallel to each other in the initial state, and that the grab net 40 under the three folding rotating arms does not entangle with each other, preventing the grab net 40 from failing to fall vertically when the three folding rotating arms are rotated, thus affecting the grabbing effect.

[0040] Further, please see Figure 5 and Figure 6 The inner hole of the first upper bushing 13 is provided with a spline inner hole 15, and the inner hole of the first lower bushing 14 is provided with a smooth hole 17. The upper end of the spline pin 30 is connected to the spline inner hole 15, and the lower part of the spline pin 30 is connected to the smooth hole 17, so as to realize the installation of the spline pin 30 and the mounting base 10.

[0041] Furthermore, the second double-ear bushing includes a second upper bushing and a second lower bushing, which are respectively disposed on the upper and lower sides of the small end. The inner hole of the second upper bushing is provided with a splined inner hole 15, and the inner hole of the second lower bushing is provided with a smooth hole 17. The upper end of the splined pin 30 can be connected to the splined inner hole 15 of the second upper bushing; the lower part of the splined pin 30 can be connected to the smooth hole 17 of the second lower bushing, so as to realize the installation of the small end of the folding rotating arm with the splined pin. Taking three folding rotating arms as an example, please refer to the following: Figure 7 and Figure 8The first-stage folding rotating arm 20a includes a first-stage second upper bushing 23a, a first-stage second lower bushing 24a, a first-stage splined inner hole 25a in the inner hole of the first-stage second upper bushing 23a, and a first-stage lower smooth hole 26a in the inner hole of the first-stage second lower bushing 24a. The upper end of the splined pin 30 can be connected to the first-stage splined inner hole 25a, and the lower part of the splined pin 30 can be connected to the first-stage lower smooth hole 26a. The second-stage folding rotating arm 20b includes a second-stage second upper bushing 23b, a second-stage second lower bushing 24b, a second-stage splined inner hole 25b in the inner hole of the second-stage second upper bushing 23b, and a second-stage lower smooth hole 26b in the inner hole of the second-stage second lower bushing 24b. The upper end of the splined pin 30 can be connected to the second-stage splined inner hole 25b, and the lower part of the splined pin 30 can be connected to the second-stage lower smooth hole 26b. Since the third-stage folding rotating arm 20c is the last folding rotating arm, it does not include the second double trunnion sleeve.

[0042] Further, please see Figure 11The splined pin 30 is provided with a splined shaft 31, a smooth shaft 32, and a connecting thread 33 from top to bottom. The outer diameter of the splined shaft 31 is larger than the outer diameters of the smooth shaft 32 and the connecting thread 33. The splined shaft 31 and the smooth shaft 32 form an annular platform surface 34. The splined shaft 31 is connected to the splined inner hole 15, and the smooth shaft 32 is connected to the smooth hole of the single bushing and the smooth hole of the lower bushing. Specifically, a detailed explanation is given using three folding rotating arms as an example. For the installation of the mounting base 10 and the first-stage folding rotating arm 20a, the first-stage single shaft sleeve 21a is inserted between the first upper shaft sleeve 13 and the first lower shaft sleeve 14. Then, the spline shaft 31 of the spline pin 30 is connected to the spline inner hole 15. The optical shaft 32 is connected to the optical hole 17 and the first-stage optical hole 22a to realize the rotational connection between the first-stage folding rotating arm 20a and the mounting base 10. When the first-stage folding rotating arm 20a is rotated, the first-stage single shaft sleeve 21a of the first-stage folding rotating arm 20a rotates around the optical shaft 32 of the spline pin 30. For the installation of the first-stage folding rotating arm 20a and the second-stage folding rotating arm 20b, the second-stage single bushing 21b is inserted between the first-stage second upper bushing 23a and the first-stage second lower bushing 24a. Then, the spline shaft 31 of the spline pin 30 is connected to the first-stage spline inner hole 25a, and the optical shaft 32 is connected to the first-stage lower optical hole 26a and the second-stage optical hole 22b to achieve the rotational connection between the first-stage folding rotating arm 20a and the second-stage folding rotating arm 20b. When the second-stage folding rotating arm 20b is rotated, the second-stage single bushing 21b of the second-stage folding rotating arm 20b rotates around the optical shaft 32 of the spline pin 30. For the installation of the secondary folding rotating arm 20b and the tertiary folding rotating arm 20c, the tertiary single bushing 21c is inserted between the secondary upper bushing 23b and the secondary lower bushing 24b. Then, the spline shaft 31 of the spline pin 30 is connected to the secondary spline inner hole 25b, and the optical shaft 32 is connected to the secondary lower optical hole 26b and the tertiary optical hole 22c to achieve the rotational connection between the secondary folding rotating arm 20b and the tertiary folding rotating arm 20c. When the tertiary folding rotating arm 20c is rotated, the tertiary single bushing 21c of the tertiary folding rotating arm 20c rotates around the optical shaft 32 of the spline pin 30.

[0043] Further, please see Figure 1 The indoor multi-arm folding safety protection grabbing device for preventing falls also includes a tension adjustment cap 60, which is connected to a connecting thread 33. Specifically, the inner hole of the tension adjustment cap 60 is provided with an inner thread 61, which is connected to the connecting thread 33 of the splined pin shaft 30. At the same time, the outer edge of the upper end face of the tension adjustment cap 60 is provided with a circular boss 62, which is connected to the lower end face of the first lower bushing 14 or the second lower bushing. Thus, by rotating the tension adjustment cap 60 left and right, the flexibility of the rotation of the folding rotating arm can be adjusted.

[0044] Specifically, for the first lower bushing 144 of the mounting base 10, such as Figure 4 As shown, the lower end face of the first lower bushing 14 is provided with a second annular groove 18. When the spline shaft 31 of the spline pin 30 is connected to the spline inner hole 15, and the optical shaft 32 is connected to the optical hole 17 and the first-stage optical hole 22a, the inner thread 61 of the tension adjustment cap 60 is connected to the connecting thread 33. The circular boss 62 of the tension adjustment cap 60 is just inserted into the second annular groove 18. By rotating the tension adjustment cap 60 left and right, the annular platform surface 34 of the spline pin 30 presses or loosens the first-stage single bushing 21a of the first-stage folding rotating arm 20a, thereby adjusting the flexibility of the rotation of the first-stage folding rotating arm 20a. Similarly, for the first-stage second lower bushing 24a of the first-stage folding rotating arm 20a, as... Figure 7 As shown, the lower end face of the first-stage second lower bushing 24a is provided with a first-stage second annular groove 28a. When the spline shaft 31 of the spline pin 30 is connected to the first-stage spline inner hole 25a, and the optical shaft 32 is connected to the first-stage lower optical hole 26a and the second-stage optical hole 22b, the inner thread 61 of the tension adjustment cap 60 is connected to the connecting thread 33. The circular boss 62 of the tension adjustment cap 60 is inserted into the first-stage second annular groove 28a. By rotating the tension adjustment cap 60 left and right, the annular platform surface 34 of the spline pin 30 presses or loosens the second-stage single bushing 21b of the second-stage folding rotating arm 20b, thereby adjusting the flexibility of rotation between the second-stage folding rotating arm 20b and the first-stage folding rotating arm 20a. For the second-stage second lower bushing 24b of the second-stage folding rotating arm 20b, as follows: Figure 8 As shown, the lower end face of the second secondary lower bushing 24b has a second secondary annular groove 28b. Similarly, after connecting the tension adjusting cap 60 to the spline pin 30 and the second secondary annular groove 28b, the annular platform surface 34 of the spline pin 30 can be pressed or released by rotating the tension adjusting cap 60 left and right, thereby adjusting the flexibility of rotation between the third-stage folding rotating arm 20c and the second-stage folding rotating arm 20b. The spline pin and tension adjusting cap have the same structure for different lower bushings, and their dimensions are adapted to the dimensions of different lower bushings.

[0045] Further, please see Figure 1The indoor personnel fall-prevention multi-arm folding safety protection grabbing device also includes a sealing cap 80, installed on the upper end face of the first upper bushing 13 or the second upper bushing, to seal the upper end face of the first upper bushing 13 or the second upper bushing, thereby preventing dust from entering the first upper bushing 13 or the second upper bushing and affecting the normal rotation of the multiple folding rotating arms. Specifically, the lower end face of the sealing cap 80 is provided with a boss 81, which is circular in shape. The upper end face of the first upper bushing 13 is provided with a first annular groove 16, and the boss 81 and the first annular groove 16 are fitted together to seal and fix the sealing cap 80 to the upper end face of the first upper bushing 13. Similarly, as Figure 7 As shown, the upper end face of the first-stage second upper bushing 23a of the first-stage folding rotating arm 20a is provided with a first-stage first annular groove 27a. The sealing cap 80, which is installed on the upper end face of the first-stage second upper bushing 23a, has a boss 81 on its lower end face that fits precisely with the first-stage first annular groove 27a, so that the sealing cap 80 is sealed and fixed to the upper end face of the first-stage second upper bushing 23a. Figure 8 As shown, the upper end face of the secondary second upper bushing 23b of the secondary folding rotating arm 20b is provided with a secondary first annular groove 27b. The sealing cover 80, which is installed on the upper end face of the secondary second upper bushing 23b, has a boss 81 on its lower end face that fits precisely with the secondary first annular groove 27b, so that the sealing cover 80 is sealed and fixed to the upper end face of the secondary second upper bushing 23b. The sealing covers 80 installed on the upper end faces of the first upper bushing 13, the first-stage second upper bushing 23a, and the secondary second upper bushing 23b have the same structure and their dimensions are adapted to the different upper bushing sizes. Furthermore, in some embodiments, a certain gap is left when assembling the sealing cover 80 and the upper end face of the splined pin 30. A reasonable setting of the gap size can ensure the sealing effect of the sealing cover and absorb the thermal deformation of the splined pin due to friction and load during operation, preventing the components from jamming, deforming, or being damaged due to expansion.

[0046] In some implementations, please refer to Figure 1Shims 90 are fitted at the connection points between the first upper bushing 13, the first lower bushing 14, and the first-stage single bushing 21a in pairs; shims 90 are fitted at the connection points between the first-stage second upper bushing 23a, the first-stage second lower bushing 24a, and the second-stage single bushing 21b in pairs; shims 90 are fitted at the connection points between the second-stage second upper bushing 23b, the second-stage second lower bushing 24b, and the third-stage single bushing 21c in pairs. The shims have the same structure and their size is adapted to the dimensions of different bushings. The shims between the bushings compensate for axial clearance, ensuring that the bushings do not deform or break due to interference fit during operation; they also distribute stress between the bearings, preventing local overload and extending bearing life. Furthermore, in humid environments, the shims act as an isolation layer, preventing electrochemical corrosion and maintaining the stable operation of the entire device.

[0047] In some embodiments, the structural dimensions of the multiple folding rotating arms 20 are identical. In other embodiments, the structural dimensions of the multiple folding rotating arms 20 decrease sequentially; for example, the structural dimensions of the first-level folding rotating arm 20a are larger than those of the second-level folding rotating arm 20b, and the structural dimensions of the second-level folding rotating arm 20b are larger than those of the third-level folding rotating arm 20c. Since people will grasp the net during use, most of their center of gravity will fall on the indoor personnel protection multi-arm folding safety grabbing device. The folding rotating arms at the ends can reduce the weight of this part, bringing the overall center of gravity closer to the mounting base 10, thereby maintaining the stability of the entire device when people grasp it, and thus maintaining body balance when people grasp the net under any of the folding rotating arms.

[0048] In some implementations, please refer to Figure 9 and Figure 10 The indoor multi-arm folding safety protection grabbing device for preventing falls also includes a plug 70 to seal the small end of the last folding rotating arm among multiple folding rotating arms. Taking three folding rotating arms as an example, the small end of the third-level folding rotating arm 20c is sealed with a plug 70. One end of the plug 70 has a groove 71, and the other end is smooth. The groove shape of the groove 71, the external structure of the plug 70, and the cross-sectional external structure of the small end of the third-level folding rotating arm 20c are the same, thereby assembling and connecting the small end of the third-level folding rotating arm 20c with the groove 71 of the plug 70 to seal the small end of the third-level folding rotating arm 20c.

[0049] In some implementations, please also refer to Figure 1 and Figure 3The indoor personnel fall-prevention multi-arm folding safety protection grabbing device also includes a connecting ring 50. One end of the connecting ring 50 is connected to multiple folding rotating arms 20, and the other end is connected to a grab net 40 to fix the grab net 40 below the multiple folding rotating arms 20. Specifically, a connecting net ring 41 is provided on the upper part of the grab net 40, and multiple through holes are spaced apart along the length of the folding rotating arms, with the opening direction of the through holes perpendicular to the length direction of the folding rotating arms. The upper end of the connecting ring 50 passes through the through holes of the folding rotating arms, and the lower end of the connecting ring 50 passes through the connecting net ring 41 to fix the grab net 40 below the folding rotating arms. The grab net 40 is always kept in the unfolded state, vertically downward, maintaining an effective safety grabbing height. In use, dragging the upper part of the grab net 40 can rotate the first-level folding rotating arms 20a, the second-level folding rotating arms 20b, and the third-level folding rotating arms 20c to the required position or arrange them into the required safety shape for safe use. As one implementation method, the grab net 40 is made of rope woven net and contains multiple mesh holes 42. If the bather is standing to wash their feet (standing on one foot and washing the other foot) or putting on pants, their arms can pass through the mesh holes 42 and be put into the mesh holes 42, so that the center of gravity of the body is attached to the grab net 40. After ensuring that the body is stable, the hands can then be used to wash feet or put on underwear, thereby further reducing the risk of the bather falling.

[0050] In some embodiments, the grab net 40 is spaced a predetermined distance from the wall, and the area of ​​the mesh 42 of the grab net 40 is larger than the thickness of the user's finger, thereby ensuring that the user's finger can be inserted into the mesh 42 and grasp the grab net 40. Furthermore, since the user's body will move downward due to inertia when grasping the grab net 40, the mesh 42 has a certain degree of elasticity, so that after the user's finger is inserted into the mesh 42, the mesh 42 will extend downward, thereby providing a certain cushioning for the user's finger and avoiding injury to the user's finger.

[0051] Furthermore, such as Figure 3As shown, the upper end of the connecting ring 50 is straight, and the lower end is V-shaped, so that when the lower end of the connecting ring 50 passes through the connecting mesh ring 41, the top of the connecting mesh ring 41 is located at the pointed bottom of the V-shape. Specifically, the upper end of the connecting ring 50 is straight, the middle part is rectangular, and the length direction of the rectangle is perpendicular to the length direction of the crossbar 20, turning into a V-shape at the bottom of the connecting ring 50. Since the upper end of the connecting ring 50 passes through the through hole opened in the folding rotating arm, and the folding rotating arm has a certain width, designing the upper end of the connecting ring 50 as straight increases the contact area between the connecting ring 50 and the through hole, and provides a more uniform force distribution, thereby effectively improving the stability of the connection between the grabbing net 40 and the folding rotating arm. The lower end of the connecting ring 50 is designed in a V-shape, so that the top of the connecting ring 41 is located at the pointed bottom of the V-shape, which restricts the movement of the connecting ring 41. As a result, when people grab the net, the connecting ring 41 will not slide back and forth on the connecting ring 50, allowing people to hold on firmly and maintain balance.

[0052] In some implementations, the installation height of the indoor single-arm safety protection grab bar for preventing falls can be the same as that of a regular safety handrail, with the lower end of the grab net flush with the ground, ensuring that people can grab onto the net during a fall. In other implementations, the installation height of the indoor single-arm safety protection grab bar for preventing falls can be higher than the height of the human body, with the lower end of the grab net flush with the ground, thus ensuring that people can grab onto the net while standing or sitting, maintaining their balance and preventing falls.

[0053] In some embodiments, the multi-arm folding safety protection grabbing device for indoor personnel to prevent falls can be used in conjunction with the single-arm safety protection grabbing device for indoor personnel to prevent falls, further increasing the grabbing area for indoor personnel and effectively preventing the risk of people falling and getting injured after taking a shower or using the toilet.

[0054] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A multi-arm folding safety protection and grabbing device for indoor personnel to prevent falls, characterized in that, It includes a mounting base, multiple folding rotating arms, a splined pin, and a grabbing net; the mounting base is connected to one end of a first-stage folding rotating arm of the multiple folding rotating arms through the splined pin, so that the first-stage folding rotating arm can rotate along the mounting base; The ends of the plurality of folding rotating arms are connected by the spline pins so that the plurality of folding rotating arms can rotate relative to each other; the number of grab nets is the same as the number of the plurality of folding rotating arms, and the upper end of each grab net is fixedly connected to each folding rotating arm, and the grab nets are spaced at a preset distance from the wall.

2. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 1, characterized in that, The mounting base includes a base plate and a first double trunnion bushing; the base plate has mounting through holes around its perimeter for mounting the entire device; the first double trunnion bushing is fixed to one side of the base plate by a rib; the first double trunnion bushing includes a first upper bushing and a first lower bushing, and the first upper bushing and the first lower bushing are arranged parallel to each other on the base plate at a preset interval.

3. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 2, characterized in that, Each of the plurality of folding rotating arms has a progressively smaller width along its length, forming a large end and a small end at both ends. The large end of the first-stage folding rotating arm is connected to the first double-eared bushing via a splined pin. The small end of the first-stage folding rotating arm is connected to the large end of the next folding rotating arm via a splined pin, and so on, so that the ends of the plurality of folding rotating arms are connected together via splined pins.

4. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 3, characterized in that, The large end of the folding rotating arm is provided with a single bushing, and the inner wall of the bushing is provided with a light hole; the small end of the other folding rotating arms, except for the last folding rotating arm, is provided with a second double-ear bushing. The single bushing of the first folding rotating arm and the second double-ear bushing of the second folding rotating arm are connected by a spline pin to realize the connection between the two adjacent folding rotating arms.

5. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 4, characterized in that, The first upper bushing has a splined inner hole, the first lower bushing has a smooth hole, the upper end of the splined pin is connected to the splined inner hole, and the lower part of the splined pin is connected to the smooth hole.

6. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 5, characterized in that, The second double-ear bushing includes a second upper bushing and a second lower bushing. The second upper bushing and the second lower bushing are respectively disposed on the upper and lower sides of the small end. The inner hole of the second upper bushing is provided with a spline inner hole, and the inner hole of the second lower bushing is provided with a smooth hole.

7. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 6, characterized in that, The splined pin is provided with a splined shaft, a smooth shaft, and a connecting thread from top to bottom; the outer diameter of the splined shaft is larger than the outer diameter of the smooth shaft and the connecting thread, and the splined shaft and the smooth shaft form an annular platform surface; wherein, the splined shaft is connected to the splined inner hole, and the smooth shaft is connected to the smooth hole of the single bushing, the smooth hole of the first lower bushing, and the smooth hole of the second lower bushing.

8. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 7, characterized in that, The multi-arm folding safety protection grabbing device also includes a tension adjustment cap, which is connected to the connecting thread.

9. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 7, characterized in that, The multi-arm folding safety protection grabbing device also includes a sealing cover, which is installed on the upper end face of the first upper bushing or the second upper bushing.

10. The indoor personnel fall prevention multi-arm folding safety protection and grabbing device according to claim 1, characterized in that, The indoor personnel fall prevention multi-arm folding safety protection grabbing device also includes a connecting ring; one end of the connecting ring is connected to the multiple folding rotating arms, and the other end is connected to the grab net, so as to fix the grab net to the multiple folding rotating arms.

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