High-safety foldable bedside armrest

Abstract

The utility model provides a foldable bedside handrail with high safety. The foldable bedside handrail comprises a supporting cross rod, a handrail cross rod located above the supporting cross rod and a plurality of swing connecting rods arranged between the supporting cross rod and the handrail cross rod at intervals, and the swing connecting rods rotate leftwards and downwards or rightwards and downwards. In the folding state, the handrail cross rod swings downwards to be staggered with the supporting cross rod so as to reduce the overall height of the handrail. The surfaces of the handrail cross rod, the supporting cross rod and the swinging connecting rod of the handrail are all of the arc-shaped smooth structures without edges, the good using hand feeling is achieved, the safety of a user in the handrail using process can be improved, and when the handrail is folded for use, the user can conveniently use the handrail. The avoiding gaps among the handrail cross rod, the swing connecting rods and the hinge seats and the avoiding gaps among the supporting cross rod, the swing connecting rods and the hinge seats can avoid space and position for the hands of the human body, and the situation that the hands of the human body are pinched due to careless operation when a traditional foldable handrail is folded is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a foldable bedside armrest with high safety. Background Art

[0002] At present, when the elderly or other people with inconvenient physical activities sit up from a lying position or lie down from a sitting position, they need to rely on a bedside armrest.

[0003] In the related art, although the bedside armrest has the function of helping the elderly to get up with force, for example, a foldable bedside guardrail disclosed in the Chinese utility model patent CN214711665U includes a first straight rod, a second straight rod and a protection structure. One end of the first straight rod and the second straight rod close to each other is rotatably connected with a connecting rod. A fixing plate is fixedly connected to the surface of the second straight rod. A protection structure is arranged on the surface of the first straight rod. The protection structure includes a connecting plate. The surface of the connecting plate is fixedly connected with the first straight rod. A cylinder is fixedly connected to the surface of the connecting plate. A ring is threadedly sleeved on the surface of the cylinder. A long rod is slidably sleeved on the surface of the cylinder. A baffle is fixedly installed on the surface of the long rod.

[0004] However, in actual use, the first straight rod, the connecting rod and the second straight rod in the above application all have obvious edges and corners. If the elderly or other people with inconvenient physical activities accidentally bump into them during daily use, they are very likely to get injured. Moreover, when folding up the armrest, the first straight rod and the connecting rod swinging downward are likely to pinch the human hand, posing a safety hazard. Summary of the Utility Model

[0005] The utility model provides a foldable bedside armrest with high safety, which can effectively solve the above problems.

[0006] The utility model is realized as follows:

[0007] A foldable bedside armrest with high safety includes a support cross bar, an armrest cross bar located above the support cross bar, and a plurality of swing links arranged at intervals between the support cross bar and the armrest cross bar. Hinge seats for hinging the ends of the swing links are arranged at the lower end of the armrest cross bar and the upper end of the support cross bar. By turning the swing links leftward and downward or rightward and downward, the armrest cross bar swings downward to be staggered with the support cross bar to reduce the overall height of the armrest to a folded state. When in the folded state, avoidance gaps for avoiding the human hand are formed between the armrest cross bar, each swing link and the hinge seat and between the support cross bar, each swing link and the hinge seat. At least one lock mechanism is arranged between one hinge seat and the swing link, which requires the human hand to actuate simultaneously on the inner and outer sides of the bed to enable the swing link to be disengaged from the limit.

[0008] As a further improvement, the hinge seat includes a raised portion formed integrally and two wing portions spaced apart at the ends of the raised portion, and the raised portion is fixedly connected to the support crossbar or the armrest crossbar.

[0009] As a further improvement, the connection between the raised portion and the wing portions is a smooth transition fillet, the upper and lower ends in the length direction of the swing link are smooth semi-circular arc surfaces, and the left and right sides are symmetric arc surface structures; both the support crossbar and the armrest crossbar are round rod structures, and the hinge seat is a smooth and edge-free arc structure from the raised portion to the wing portions.

[0010] As a further improvement, on the raised portion of the hinge seat provided with a locking mechanism, there is a jack communicating with the interior and a placement groove communicating with the jack; the locking mechanism includes a first button, a second button, a locking pin rod and a compression spring. The first button and the second button are inserted and installed in the jack from the front and back sides and can slide up and down in the jack. The locking pin rod is inserted between the first button and the second button. There is a locking groove on the end of the swing link for the locking pin rod to slide and fit. The compression spring is used to press the locking pin rod into the locking groove to limit the rotation of the swing link and lock the swing link in the upright state.

[0011] As a further improvement, the first button includes an operation portion extending out of the jack and an insertion cylinder portion extending into the jack. The second button includes an operation portion extending out of the jack and a plugging portion extending into the jack and plugged and fitted inside the insertion cylinder portion. The end of the plugging portion is provided with a hook portion having the ability to elastically deform, and there is a locking hole on the outer side wall of the insertion cylinder portion communicating with the interior and for the hook portion to hook and anchor.

[0012] As a further improvement, both the operation portions of the first button and the second button are provided with slots for the end of the locking pin rod to be inserted. The periphery of the locking pin rod inserted in the slot is adapted to be in contact with the placement groove; there are top grooves communicating with the jack at the lower ends of both the insertion cylinder portion and the plugging portion, and the top grooves are adapted to be in contact with the periphery of the locking pin rod.

[0013] As a further improvement, at the end of the insertion cylinder portion of the first button, there is an extension block for the compression spring to press and apply force. There is an avoidance groove on the plugging portion for the extension block to give way. There is an installation groove on the bottom wall of the raised portion for the compression spring to be inserted. One force-receiving end of the compression spring is connected to the bottom of the installation groove, and the other force-receiving end is connected to the extension block.

[0014] As a further improvement, the outer side of the operation portion has an arc-shaped convex structure that is convenient for the human hand to toggle.

[0015] As a further improvement, a first metal insert for strengthening the structural strength is installed conformally inside the hinge seat, and a second metal insert for strengthening the structural strength is installed conformally inside the end of the swing link.

[0016] The beneficial effects of the present utility model are:

[0017] The surfaces of the crossbar of the handrail, the support crossbar and the swing link of this application are all arc-shaped and smooth structures without sharp edges. They not only have a good feel in use, but also can improve the safety of users during the use of the handrail. Moreover, when the handrail is folded, the clearance between the crossbar of the handrail, each swing link and the hinge seat and between the support crossbar, each swing link and the hinge seat can make way for the human hand, effectively avoiding the situation of pinching the human hand that occurs due to careless operation when folding a traditional foldable handrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the handrail of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the assembled relationship of each component of the lock mechanism of the handrail of the present utility model Figure 1 ;

[0020] Figure 3 is the structural schematic diagram of the assembled relationship of each component of the lock mechanism of the handrail of the present utility model Figure 2 ;

[0021] Figure 4 is the present utility model Figure 1 The enlarged schematic diagram at A-A in;

[0022] Figure 5 is the three-dimensional structural diagram of the present utility model in the folded state;

[0023] Figure 6 is the present utility model Figure 5 The enlarged schematic diagram at B-B in;

[0024] Figure 7 is the structural schematic diagram of the assembled relationship between the swing link and the hinge seat of the present utility model;

[0025] Figure 8 is the structural schematic diagram of the handrail in the folded state after the crossbar of the handrail swings leftward and downward or rightward and downward;

[0026] Figure 9 is the exploded schematic diagram showing the assembled relationship between the first metal insert and the hinge seat, and the second metal insert and the swing link of the present utility model;

[0027] Figure 10 is the present utility model showing on the hinge seat.

[0028] The following are the reference numerals in the drawings:

[0029] 10. Crossbar of the handrail;

[0030] 20. Support crossbar;

[0031] 30. Swing connecting rod; 31. Locking slot;

[0032] 40, hinged seat; 41, padding portion; 411, plug hole; 412, shelf slot; 413, mounting slot; 42, wing portion; 401, transition fillet;

[0033] 50, locking mechanism; 501, slot; 502, top slot; 503, operating part;

[0034] 51, first plug button; 511, plug tube portion; 5111, lock hole; 5112, extension block;

[0035] 52, second plug button; 521, plug-in portion; 5211, hook portion; 5212, avoidance groove;

[0036] 53. Locking pin; 54. Pressing spring;

[0037] 60. Pin;

[0038] 70. A first metal insert;

[0039] 80. A second metal insert;

[0040] 100. Handrail; 101. Avoidance gap. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0042] like Figures 1 to 10 As shown, a high-safety foldable bedside handrail comprises a supporting crossbar 20, a handrail crossbar 10 located above the supporting crossbar 20, and a plurality of swing connecting rods 30 arranged at intervals between the supporting crossbar 20 and the handrail crossbar 10. The lower end of the handrail crossbar 10 and the upper end of the supporting crossbar 20 are both provided with hinge seats 40 for hinged ends of the swing connecting rod 30. When the swing connecting rod 30 is rotated leftward and downward or rightward and downward, the handrail crossbar 10 swings downward to be aligned with the supporting crossbar. 20 are staggered to reduce the overall height of the armrest 100 in a folded state; when in the folded state, an avoidance gap 101 is formed between the armrest cross bar 10, each swing link 30 and the hinge seat 40, and between the support cross bar 20, each swing link 30 and the hinge seat 40 to allow human hands to avoid the air; a locking mechanism 50 is provided between at least one hinge seat 40 and the swing link 30, which requires the human hand to be actuated simultaneously to disengage the white profit link 30 from the limit.

[0043] like Figures 1 to 10As shown, in this embodiment, the number of swing link rods 30 is three, and the three swing link rods 30 are equidistantly installed between the armrest cross bar 10 and the support cross bar 20. Taking the locking mechanism 50 installed between the middle swing link rod 30 and the top hinge seat 40 as an example.

[0044] The structures of the various components of the present utility model will be described separately below.

[0045] As Figures 1 to 3 and Figure 5 、 Figure 7 and Figure 10 shown, the hinge seat 40 includes a raised portion 41 formed integrally and two wing portions 42 disposed at intervals at the ends of the raised portion 41. The raised portion 41 is fixedly connected to the support cross bar 20 or the armrest cross bar 10 by bolts. The swing link rod 30 is rotatably installed between the two wing portions 42 through a pin shaft 60. At the junction of the raised portion 41 and the wing portions 42, there is a smooth transition fillet 401. Such a design can effectively avoid the situation of pinching the human hand during the folding of the armrest. The upper and lower ends in the length direction of the swing link rod 30 are smooth semi-circular arc surfaces, and the left and right sides are symmetrical arc surface structures. Both the support cross bar 20 and the armrest cross bar 10 are round bar structures, and the hinge seat 40 has a smooth and edge-free arc structure from the raised portion 41 to the wing portions 42. Such a design not only makes the overall structure of the bedside armrest 100 more beautiful, but also can improve the comfort and safety during the use of the armrest 100.

[0046] As Figures 2 to 6 shown, on the raised portion 41 of the hinge seat 40 provided with the locking mechanism 50, there is a jack 411 communicating with the inside and a placing groove 412 communicating with the jack 411. The locking mechanism 50 includes a first button 51, a second button 52, a locking pin rod 53, and a compression spring 54. The first button 51 and the second button 52 are inserted into the jack 411 from the front and back sides and can slide up and down in the jack 411. A locking groove 31 for the sliding fit of the locking pin rod 53 is provided at the end of the swing link rod 30. The compression spring 54 is used to press the locking pin rod 53 into the locking groove 31 to limit the rotation of the swing link rod 30, thereby locking the swing link rod 30 in the upright state.

[0047] When the bedside armrest needs to be folded, the first button 51 and the second button 52 are simultaneously pushed upward to overcome the elastic force of the compression spring 54, so that the locking pin rod 53 is disengaged from the locking groove 31. Then, according to the user's need for the direction of using the armrest, the swing link rod 30 is rotated leftward and downward or rightward and downward. The locking pin rod 53 slides along the end of the swing link rod 30 to the side. At this time, the external force of the hand is removed. Under the action of the elastic force of the compression spring 54 and the gravity of the armrest cross bar 10, the locking pin rod 53 is pressed against the side of the swing link rod 30, thereby completing the folding of the armrest 100.

[0048] It should be noted here that in this application, the operating parts 503 on the first push button 51 and the second push button 52 need to be toggled simultaneously to actuating the locking pin rod 53 to slide into or out of the locking slot 31. With such a design, it can avoid the situation that the user accidentally touches and causes the armrest to quickly switch to the folded state, improving the safety during the use of the armrest.

[0049] As Figures 2 to 6 shown, the first push button 51 includes an operating part 503 extending outside the jack 411 and a cylinder part 511 extending into the jack 411. The second push button 52 includes an operating part 503 extending outside the jack 411 and a plugging part 521 extending into the jack 411 and plugging and mating with the inside of the cylinder part 511. Slots 501 for plugging the end of the locking pin rod 53 are provided on the operating parts 503 of the first push button 51 and the second push button 52. The periphery of the locking pin rod 53 inserted in the slot 501 is adapted to be in contact with the resting groove 412; a hook part 5211 with elastic deformation ability is provided at the end of the plugging part 521, and a locking hole 5111 communicating with the inside and for the hook part 5211 to hook and anchor is provided on the outer side wall of the cylinder part 511; top grooves 502 communicating with the jack 411 are provided at the lower ends of the cylinder part 511 and the plugging part 521, and the top grooves 502 are adapted to be in contact with the periphery of the locking pin rod 53.

[0050] As Figure 2 and Figure 3 shown, at the end of the cylinder part 511 of the first push button 51, there is an extension block 5112 for the top pressure spring 54 to apply a top pressure force. An avoidance groove 5212 for the extension block 5112 to give way is provided on the plugging part 521. An installation groove 413 for the top pressure spring 54 to insert is provided on the bottom wall of the elevation part 41. One force-receiving end of the top pressure spring 54 is connected to the bottom of the installation groove 413, and the other force-receiving end is connected to the extension block 5112; an arc-shaped convex structure for facilitating the human hand to toggle is provided on the outside of the operating part 503.

[0051] As Figure 4 、 Figure 6 and Figure 9 shown, a first metal insert 70 for strengthening the structural strength is installed conformally inside the hinge seat 40, and a second metal insert 80 for strengthening the structural strength is installed conformally inside the end of the swing link 30. With such a design, it can strengthen the overall rigidity of the armrest 100 and enable the armrest 100 to have a longer service life.

[0052] Next, in combination with Figures 1 to 10 , the assembly of the present utility model will be described.

[0053] The top pressure spring 54 is inserted into the installation groove 413. The first button 51 with the locking pin rod 53 inserted into the slot 501 is inserted into the side slot 501. Then, the barrel part 511 of the first button 51 is inserted into the jack 411 from one side, so that the end of the top pressure spring 54 contacts and presses against the extension block 5112 on the barrel part 511. Then, the insertion part 521 of the second button 52 is inserted into the barrel part 511 from the other side jack 411. The hook part 5211 on the insertion part 521 elastically deforms inward to make way. When the hook part 5211 and the lock hole 5111 on the barrel are in relative positions, the hook part 5211 elastically deforms and resets to hook and latch the hole wall of the lock hole 5111. At this time, both ends of the locking pin rod 53 are located in the slot 501, thus completing the quick insertion and connection of the first button 51 and the second button 52.

[0054] The following combines, 1 to Figure 10 , and details the implementation steps and principles of the use state and folding state of the bedside armrest of the present utility model.

[0055] When the armrest 100 needs to be folded, the first button 51 and the second button 52 are toggled upward, the top pressure spring 54 is compressed, and the locking pin rod 53 slides out of the locking groove 31. Then, the swing link 30 is rotated left and down or right and down. The locking pin rod 53 slides along the end of the swing link 30 to the side. After removing the external force of the hand, the locking pin rod 53 is pressed against the side of the swing crossbar under the action of the elastic force of the top pressure spring 54 and the gravity of the armrest crossbar 10, thus completing the folding of the bedside armrest.

[0056] When the armrest 100 needs to be used, the swing link 30 is directly rotated right and up or left and up until the swing link 30 is in an upright state and the locking pin rod 53 and the locking groove 31 are in relative positions. Under the action of the elastic force of the top pressure spring 54, the locking pin rod 53 slides into the locking groove 31 and forms a non-rotating fit with the swing link 30, thus locking the armrest in the use state.

[0057] The above embodiments are only for illustrating the present utility model and are not intended to limit the present utility model. Those of ordinary skill in the art can also make various transformations or changes without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions should also belong to the scope of the present utility model and are defined by each claim.

Claims

1. A high-safety foldable bedside handrail, comprising a supporting crossbar (20), a handrail crossbar (10) located above the supporting crossbar (20), and a plurality of swing connecting rods (30) arranged at intervals between the supporting crossbar (20) and the handrail crossbar (10), wherein the lower end of the handrail crossbar (10) and the upper end of the supporting crossbar (20) are both provided with hinge seats (40) for hinged ends of the swing connecting rods (30); characterized in that: Rotate the swing link (30) downward to the left or downward to the right, and the armrest crossbar (10) swings downward to be staggered from the support crossbar (20) to reduce the overall height of the armrest (100) to a folded state; when in the folded state, an avoidance gap (101) for the human hand to clear and give way is formed between the armrest crossbar (10), each swing link (30) and the hinge seat (40), and between the support crossbar (20), each swing link (30) and the hinge seat (40); at least one hinge seat (40) and the swing link (30) are provided with a locking mechanism (50) that requires the human hand to be actuated simultaneously on the inner and outer sides of the bed to disengage the swing link (30) from the limit.

2. The foldable bedside armrest with high security according to claim 1, characterized in that: The hinge seat (40) includes an integrally formed elevation part (41) and two wing parts (42) spaced at the ends of the elevation part (41), and the elevation part (41) is fixedly connected to the support crossbar (20) or the armrest crossbar (10).

3. The foldable bedside armrest with high safety as claimed in claim 2, wherein: At the junction of the elevation part (41) and the wing part (42) is a smooth transition fillet (401). The upper and lower ends in the length direction of the swing link (30) are smooth semi-circular arc surfaces, and the left and right sides are symmetric arc surface structures; both the support crossbar (20) and the armrest crossbar (10) are round bar structures, and the hinge seat (40) is a smooth and edge-free arc structure from the elevation part (41) to the wing part (42).

4. The foldable bedside armrest with high security according to claim 2, characterized in that: On the elevation part (41) of the hinge seat (40) provided with the locking mechanism, a jack (411) communicating with the inside and a placement groove (412) communicating with the jack (411) are opened; the locking mechanism includes a first push button (51), a second push button (52), a locking pin (53) and a compression spring (54). The first push button (51) and the second push button (52) are inserted into the jack (411) from the front and rear sides and can slide up and down in the jack (411). The locking pin (53) is inserted between the first push button (51) and the second push button (52). A locking groove (31) for the locking pin (53) to slide and cooperate is opened at the end of the swing link (30). The compression spring (54) is used to press the locking pin (53) into the locking groove (31) to limit the rotation of the swing link (30) and lock the swing link (30) in the upright state.

5. The foldable bedside armrest with high security according to claim 4, wherein: The first push button (51) includes an operation part (503) extending outside the jack (411) and an insertion cylinder part (511) extending into the jack (411). The second push button (52) includes an operation part (503) extending outside the jack (411) and a plug-in part (521) extending into the jack (411) and plugged into the inside of the insertion cylinder part (511). A hook part (5211) with elastic deformation ability is provided at the end of the plug-in part (521), and a lock hole (5111) communicating with the inside and for the hook part (5211) to hook and cooperate is opened on the outer side wall of the insertion cylinder part (511).

6. The foldable bedside armrest with high security according to claim 5, characterized in that: Slots (501) for inserting the ends of the locking pin rods (53) are provided on the operating parts (503) of the first plug button (51) and the second plug button (52). The circumferences of the locking pin rods (53) inserted in the slots (501) are adapted to be in contact with the placement grooves (412); top grooves (502) communicating with the jacks (411) are provided at the lower ends of the plug barrel parts (511) and the plug-in parts (521), and the top grooves (502) are adapted to be in contact with the circumferences of the locking pin rods (53).

7. The foldable bedside armrest with high safety according to claim 4, characterized in that: An extension block (5112) for the top pressure spring (54) to apply a top pressure force is provided at the end of the plug barrel part (511) of the first plug button (51). An avoidance groove (5212) for making way for the extension block (5112) is provided on the plug-in part (521). An installation groove (413) for the top pressure spring (54) to be inserted is provided on the bottom wall of the elevation part (41). One force-receiving end of the top pressure spring (54) is connected to the bottom of the installation groove (413), and the other force-receiving end is connected to the extension block (5112).

8. The foldable bedside armrest with high security according to claim 7, characterized in that: The outside of the operating part (503) has an arc-shaped convex structure that is convenient for the human hand to toggle.

9. The foldable bedside armrest with high safety as claimed in claim 1, wherein: A first metal insert (70) for strengthening the structural strength is installed conformally inside the hinge seat (40), and a second metal insert (80) for strengthening the structural strength is installed conformally inside the end of the swing link (30).

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