Anti-pinch electric bed

Abstract

The anti-pinch electric bed comprises a base, a bearing set pivoted to the base, a connecting and swinging set pivoted to the base and capable of driving the bearing set to rotate and swing relative to the base, and a driving set. The connecting pendulum set is provided with a long groove, and the long groove is provided with a first groove end and a second groove end. The driving set is provided with a driving body pivoted to the base, a telescopic column capable of stretching out and drawing back relative to the driving body and a slot rod connected to the telescopic column, and the slot rod can penetrate through the long groove of the connecting and swinging set in a sliding mode. When the slot rod abuts against the first slot end and the telescopic column is shortened relative to the driving body, the driving set drives the bearing set to rotate and swing to be away from the base through the connecting and swinging set. When the telescopic column extends relative to the driving body, the bearing set rotates and swings to be close to the base, and the bearing set is blocked by external force, the telescopic column continuously extends relative to the driving body, so that the slot rod slides from the first slot end to the second slot end. Therefore, when the bearing group is blocked, the driving group continuously acts and does not make the continuous swinging group deflect, and the problem that the known bearing group still deflects is solved.

Description

Technical Field

[0001] The present application relates to electric bed technology, and in particular to an electric bed that can prevent pinching. Background Art

[0002] A known electric bed has a load-bearing group that can be swung on a base and a driving group such as a linear actuator. The load-bearing group is used to carry the upper body and / or lower body of the user through a mattress, and the driving group directly or indirectly drives the load-bearing group to swing up and down relative to the base to lift the upper body and / or lower body of the user, so that the upper body and / or lower body of the user can lie on the electric bed in an inclined or lying posture. When the driving group drives the load-bearing group to swing from top to bottom, and there is a foreign object or a human body under the load-bearing group, if the load-bearing group continues to swing, the foreign object or human body may be sandwiched between the load-bearing group and the base and injured, or the foreign object may cause damage to the components of the electric bed. Therefore, a safety protection mechanism needs to be provided to improve the defects of the conventional electric bed. Although some electric beds are equipped with sensors to improve the above problems, using sensors to detect the presence of foreign objects and thereby control the movement of the electric bed is not only expensive, but also may still have the problem of incomplete and accurate sensing. Therefore, this type of electric bed still has a need to be simplified and ensure safety. Utility Model Content

[0003] The main purpose of the present application is to provide an anti-pinch electric bed, which can prevent the load-bearing group from swinging when the load-bearing group is blocked but the driving group is still in motion, so as to avoid pinching of objects or human bodies or damage to the electric bed.

[0004] In order to achieve the above-mentioned purpose, the present application provides an anti-pinch electric bed, including a base, a bearing group, a swing group and a driving group. The bearing group is pivoted to the base and can swing relative to the base. The swing group is pivoted to the base and can swing relative to the base, and is connected to the bearing group to drive the bearing group to swing relative to the base; the swing group has a long slot, and the long slot has a first slot end and a second slot end. The driving group has a driving body pivoted to the base, a telescopic column that can be telescoped relative to the driving body, and a slot rod connected to the telescopic column, and the slot rod can be slidably penetrated into the long slot of the swing group. Among them, when the slot rod is against the first slot end and the telescopic column is shortened relative to the driving body, the driving group drives the swinging group to swing relative to the base, thereby driving the bearing group to swing relative to the base and away from the base; and when the telescopic column is extended relative to the driving body, causing the bearing group to swing relative to the base and approach the base, and the bearing group is blocked by external force, the telescopic column continues to extend relative to the driving body, causing the slot rod to slide from the first slot end to the second slot end.

[0005] By virtue of the above-mentioned technical features, when the carrying group swings downward and encounters an object blocking it, although the telescopic column of the driving group continues to move, only the slot rod slides in the long slot of the pendulum group. At this time, the pendulum group is not affected by the movement of the driving group, so the pendulum group can be prevented from continuing to swing downward and pinching objects or human bodies, or the electric bed can be prevented from being damaged.

[0006] The detailed structure, features, assembly or use of the anti-pinch electric bed provided by this application will be described in the detailed description of the implementation method later. However, those with ordinary knowledge in the field of this application should understand that the detailed description and the specific implementation methods listed in this application are only used to illustrate this application, and are not used to limit the scope of the patent application of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a stereoscopic diagram of an anti-pinch electric bed provided in a preferred embodiment of the present application.

[0008] Figure 2 This is another stereoscopic view of the anti-pinch electric bed provided in the preferred embodiment of the present application.

[0009] Figure 3 It is another body diagram of the anti-pinch electric bed provided in the preferred embodiment of the present application.

[0010] Figure 4 It is a front view of the anti-pinch electric bed provided by the preferred embodiment of the present application after some components are removed, showing that the load-bearing group is tilted downward to a tilted state.

[0011] Figure 5 It is a three-dimensional diagram of the base of the anti-pinch electric bed provided in the preferred embodiment of the present application.

[0012] Figure 6 It is a stereoscopic view of the swing bearing member of the anti-pinch electric bed provided in the preferred embodiment of the present application.

[0013] Figure 7 It is a stereoscopic diagram of the anti-pinch electric bed swing group provided in the preferred embodiment of the present application.

[0014] Figure 8 This is another front view of the anti-pinch electric bed provided in the preferred embodiment of the present application after some components are removed, showing that the bearing group is in a horizontal state relative to the base.

[0015] Fig. 9 This is another front view of the anti-pinch electric bed provided in the preferred embodiment of the present application after some components are removed, showing the state in which the bearing group is swung upward to a top dead point.

[0016] Fig.10 Similar to Figure 4, showing that the carrying group is tilted downward to the tilted state and is blocked.

[0017] The symbols in the accompanying drawings are as follows:

[0018] 10: Base

[0019] 11: First pivoting portion

[0020] 12: Escape

[0021] 13: Second pivoting portion

[0022] 16:Fixer

[0023] 20: Bearing Group

[0024] 21: Bearing ornaments

[0025] 211: third pivoting portion

[0026] 212: Fourth pivoting portion

[0027] 22: Bearing

[0028] 23: Pivot piece

[0029] 30: Continuous swing group

[0030] 30a: horizontal bar

[0031] 30b: End piece

[0032] 31: Fifth pivoting portion

[0033] 32: Sixth pivot portion

[0034] 33: Slot

[0035] 331: Long groove

[0036] 3311: First slot end

[0037] 3312: Second slot end

[0038] 40:Driver Group

[0039] 41: Drive body

[0040] 42: Telescopic column

[0041] 43: Slot rod

[0042] A: Angle

[0043] P1: First pivot member

[0044] P2: Second pivot member

[0045] P3: The third pivot DETAILED DESCRIPTION

[0046] The applicant first explains that throughout the specification, including the embodiments described below and the claims of the patent application, the terms related to directions are based on the directions in the drawings. Secondly, in the embodiments to be described below and the drawings, the same component numbers represent the same or similar components or their structural features.

[0047] See also Figures 1 to 7 The preferred embodiment of the anti-pinch electric bed of the present application mainly includes a base 10, a bearing group 20, a swing group 30 and a driving group 40. In the figure, a group of mutually matching bearing groups 20, swing groups 30 and driving groups 40 are provided on both the front and rear sides of the electric bed. Since the structures and action mechanisms of the aforementioned mechanisms on the front and rear sides are similar, only one side is used for illustration in this embodiment.

[0048] The base 10 has three first pivoting parts 11, a second pivoting part 13 and two escape grooves 12. Each first pivoting part 11 has a hole and is coaxially arranged, wherein two first pivoting parts 11 are located on both sides, and another first pivoting part 11 is located in the middle of the bottom surface, each escape groove 12 is located on both sides and is opened in an arc shape with the first pivoting parts 11 on both sides as the center, and the second pivoting part 13 has a hole and is located on the other side. Secondly, the top surface of the base 10 is directly or indirectly fixed with a fixing member 16 by a locking assembly (not shown in the figure).

[0049] The bearing group 20 has two swinging bearing members 21 and a plurality of bearing members 22. Each swinging bearing member 21 has a third pivoting portion 211 and a fourth pivoting portion 212. Each third pivoting portion 211 has a hole and is pivotally connected to each first pivoting portion 11 of the base 10 by a first pivoting member P1. Each fourth pivoting portion 212 has a hole and is located at one end. Each bearing member 22 is pivotally connected to each swinging bearing member 21 by a plurality of pivoting plates 23. In this embodiment, the fixing member 23 and the bearing member 22 are used to support a mattress (not shown in the figure). The fixing member 23 corresponds to the user's buttocks position, while the bearing member 22 corresponds to the user's back and head position, and one end of the bearing member 22 is pivotally connected to the fixing member 23, so that the bearing member 22 can swing up and down relative to the fixing member 23 (that is, relative to the base 10) (that is, away from or close to the base 10).

[0050] The swinging group 30 has a crossbar 30a, two end pieces 30b respectively fixed at both ends of the crossbar 30a, three fifth pivoting portions 31 respectively located at the two end pieces 30b and the middle section of the crossbar 30a, two sixth pivoting portions 32 respectively located at the two end pieces 30b, two slots 33 respectively extending downward from the middle section of the crossbar 30a, and two long slots 331 respectively located at the two slots 33. Among them, each fifth pivoting portion 31 has a hole and is respectively pivotally connected to each first pivoting portion 11 of the base 10 by each first pivoting member P1, each sixth pivoting portion 32 has a hole and is respectively pivotally connected to each fourth pivoting portion 212 of the bearing group 20 by a second pivoting member P2, and each second pivoting member P2 moves through each escape slot 12 of the base 10. Each slot piece 33 is linked with the first pivot member P1 as the center. Each slot piece 33 has an arc-shaped long slot 331 with the first pivot member P1 as the center. Each long slot 331 has a first slot end 3311 and a second slot end 3312. Each first slot end 3311 and the second slot end 3312 are respectively located at two ends of each long slot 331.

[0051] From the above, it can be seen that the bearing group 20 and the pendulum group 30 are jointly pivotally connected to the base 10 by the first pivot member P1; in other words, the pivot center of the pendulum group 30 and the base 10 and the pivot center of the pendulum bearing member 21 of the bearing group 20 and the base 10 are coaxial.

[0052] The driving group 40 comprises a driving body 41, a telescopic column 42 and a slot rod 43. The driving body 41 is pivotally connected to the second pivoting portion 13 of the base 10 by a third pivoting member P3. The telescopic column 42 is telescoped by the driving body 41. The telescopic column 42 is located between two slots 33. The slot rod 43 is connected to the front end of the telescopic column 42. The slot rod 43 is inserted into each long slot 331 of the swinging group 30. In this way, when the telescopic column 42 is extended or shortened relative to the driving body 41 by the driving body 41, the slot rod 43 can slide between each first slot end 3311 and the second slot end 3312.

[0053] Among them, the first slot end 3311 of the swing group 30 is closer to the driving group 40 than the second slot end 3312. The slot rod 43 of the driving group 40 can be against the first slot end 3311 of the swing group 30, and the deflection angle of the swing group 30 is controlled by the telescopic column 42. Specifically, when the telescopic column 42 of the driving group 40 is shortened, the telescopic column 42 drives the swing group 30 through the slot plate 33 and then drives the swing bearing member 21 to pivot counterclockwise with the first pivot member P1 as the rotation center, so that the bearing group 20 deflects and rises away from the base 10, and when the telescopic column 42 of the driving group 40 is extended, the bearing group 20 deflects and descends relative to the base 10 and approaches the base 10. The following further describes the operating action mode and efficacy of the anti-pinch electric bed provided in the preferred embodiment of the present application.

[0054] Figure 8The display driving group 40 is extended, and the slot rod 43 of the telescopic column 42 of the driving group 40 is against the first slot end 3311 of the long slot 331 of the swing group 30, and the bearing group 20 is in a horizontal posture relative to the base 10. At this time, if the telescopic column 42 is shortened, since the slot rod 43 is against the first slot end 3311, the telescopic column 42 will pull the slot sheet 33 to make the swing group 30 rotate counterclockwise, thereby driving the bearing group 20 to swing upward. Fig. 9 The display driving group 40 is shortened to the shortest, pulling the swing group 30 to rotate counterclockwise, and then driving the bearing group 20 to swing upward to the top dead point.

[0055] When the operating load group 20 is Fig. 9 When it swings downward in the state shown, the telescopic column 42 that controls the drive group 40 is in a state that can be stretched or actively extended. At this time, since the load-bearing group 20 is affected by its own weight or the weight of the mattress and the user, the load-bearing group 20 will have a natural tendency to swing downward. Therefore, when the load-bearing group 20 swings downward, it will drive the pendulum group 30 to rotate clockwise around the first pivot P1 through the second pivot P2. At this time, the slot rod 43 of the drive group 40 can still roughly maintain the first slot end 3311 position of the long slot 331 of the linked pendulum group 30. Figure 4 Display bearer group 20 consists of Fig. 9 The slot rod 43 is tilted downward to an inclined state where the bearing assembly 20 and the base 10 or the horizontal form an angle A, as described above. At this time, the slot rod 43 is still maintained at the first slot end 3311 of the long slot 331.

[0056] like Fig.10 As shown, when the bearing group 20 is Figure 4 When the state continues to deflect downward but is blocked by external force or foreign objects, the driving group 40 continues to extend, and its slot rod 43 will slide along the long slot 331 from the first slot end 3311 to the second slot end 3312 until it abuts against the second slot end 3312. During this sliding process, the supporting group 20 will temporarily not deflect downward due to being blocked by external force or foreign objects, so that the supporting group 20 and the base 10 or the horizontal still maintain the same angle A. In other words, when the aforementioned situation occurs, the electric bed provided by the present application will provide a buffer time (i.e., the time for the slot rod 43 to slide from the first slot end 3311 to the second slot end 3312), allowing the user to eliminate the external force or foreign matter, or when the external force is caused by the downward swing of the support group 20 pressing against the human body, the person touched will have the aforementioned buffer time to leave the path of the downward swing of the support group 20 and avoid being further pinched by the support group 20, or, when the support group 20 stops deflecting downward and the drive group 40 continues to move, a warning sound and light can also be issued or the drive group 40 can be controlled to stop to ensure safety.

[0057] From the above statements, it can be seen that in the anti-pinch electric bed provided by the present embodiment, when the downward deflection of the load-bearing group 20 is blocked, the driving group 40 continues to drive the telescopic column 42 to extend without deflecting the swing group 30, that is, it will not cause the load-bearing group 20 to deflect, thereby avoiding pinching injuries or damage to the electric bed, and truly achieving the purpose of this application.

[0058] In addition to the above examples, the present application may also be implemented in the following ways, all of which can still achieve the purpose of this application.

[0059] For example, the first pivoting part 11 of the base 10 is not limited to three as mentioned above, but can be changed to one. The swing bearing member 21 of the bearing group 20 is not limited to two as mentioned above, but can be changed to one. The fifth pivoting part 31 of the swinging group 30 is not limited to three as mentioned above, but can be changed to one or two. The slot 33 of the swinging group 30 is not limited to two as mentioned above, but can be changed to one.

[0060] Alternatively, the pivotal center of the pendulum group 30 and the base 10 is not limited to being coaxial with the pivotal center of the pendulum bearing member 21 of the load-bearing group 20 and the base 10 as mentioned above, and can also be changed to a different axis.

[0061] Alternatively, the supporting member 22 is not limited to being connected to the swing bearing member 21 via the pivot plate 23 as mentioned above, and can be directly fixed to the swing bearing member 21 instead.

[0062] In addition, the base 10, the bearing group 20, the swing group 30 and the driving group 40 are not limited to being arranged only on the front side of the electric bed, or only on the rear side of the electric bed, but can also be arranged on both the front and rear sides of the electric bed, and the front and rear bearing groups 20 can be connected to each other or not. Finally, it must be explained again that the components disclosed in the above-mentioned embodiments of the present application are only for illustrative purposes and are not used to limit the scope of the present case. Replacements or changes of other equivalent components should also be covered by the scope of the patent application of the present case.

Claims

1. Anti-pinch electric bed, characterized in that: include: Base; A bearing assembly, pivotally connected to the base and capable of swinging relative to the base; The swing-connecting group is pivotally connected to the base and can swing relative to the base, and is connected to the bearing group to drive the bearing group to swing relative to the base; the swing-connecting group has a long slot, and the long slot has a first slot end and a second slot end; A driving group, comprising a driving body pivotally connected to the base, a telescopic column capable of telescoping relative to the driving body, and a slot rod connected to the telescopic column, wherein the slot rod can be slidably inserted into the long slot of the swinging group; When the slot rod abuts against the first slot end and the telescopic column is shortened relative to the driving body, the driving group drives the swinging group to swing relative to the base, thereby driving the bearing group to swing relative to the base and away from the base; When the telescopic column extends relative to the driving body, causing the bearing group to swing relative to the base and approach the base, and the bearing group is blocked by external force, the telescopic column continues to extend relative to the driving body, causing the slot rod to slide from the first slot end to the second slot end.

2. The anti-pinch electric bed according to claim 1, wherein the bearing group comprises a swing bearing member and a bearing member; one end of the bearing member is pivotally connected to the base so that the bearing member can swing relative to the base; the swing bearing member is pivotally connected to the base and the bearing member, and is connected to the connecting swing group.

3. The anti-pinch electric bed according to claim 2, wherein the bearing member and the swing member are pivotally connected to each other via a pivot plate.

4. The anti-pinch electric bed according to claim 3, wherein the swing bearing member and the swing connecting group are pivotally connected to the base via a first pivot member, and the swing bearing member and the swing connecting group are interconnected via a second pivot member.

5. The anti-pinch electric bed according to claim 4, wherein: The base has a first pivoting portion and a second pivoting portion; The swing bearing member has a third pivoting portion and a fourth pivoting portion; the third pivoting portion is pivotally connected to the first pivoting portion of the base via the first pivoting member; The swing-connecting assembly comprises a fifth pivotal portion and a sixth pivotal portion; the fifth pivotal portion is pivotally connected to the first pivotal portion of the base via the first pivotal member, and the sixth pivotal portion is pivotally connected to the fourth pivotal portion of the swing-bearing member via the second pivotal member; and The driving body is pivotally connected to the second pivotal portion of the base via a third pivotal member.

6. The anti-pinch electric bed according to claim 1, wherein: The base has a first pivoting portion and a second pivoting portion; The bearing assembly has a third pivoting portion and a fourth pivoting portion; the third pivoting portion is pivotally connected to the first pivoting portion of the base via a first pivoting member; The swing-connecting group has a fifth pivoting portion and a sixth pivoting portion; the fifth pivoting portion is pivotally connected to the first pivoting portion of the base via the first pivoting member, and the sixth pivoting portion is pivotally connected to the fourth pivoting portion of the bearing group via the second pivoting member; The driving body is pivotally connected to the second pivotal portion of the base via a third pivotal member.

7. The anti-pinch electric bed according to claim 5 or 6, wherein the base has an escape groove, and the second pivot member is displaced in the escape groove.

8. The anti-pinch electric bed according to claim 5 or 6, wherein the long groove of the swing-connecting assembly is arc-shaped with the axis of the first pivot member as the center.

9. The anti-pinch electric bed according to claim 1, wherein the first slot end of the swing group is closer to the drive group than the second slot end.

10. The anti-pinch electric bed according to claim 1, wherein the swing group has a cross bar, an end piece fixed to one end of the cross bar, and a slot extending downward from the middle section of the cross bar; the cross bar is pivotally connected to the base through a first pivot piece, the end piece is connected to the bearing group through a second pivot piece, and the long slot is located in the slot piece.

11. The anti-pinch electric bed according to claim 10, wherein the bearing group comprises a swinging member and a bearing member; one end of the bearing member is pivotally connected to the base so that the bearing member can swing relative to the base; the swinging member is pivotally connected to the base and the bearing member, and is connected to the end member through the second pivot member.

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