Anti-pinch device of elevator

Abstract

The utility model provides an anti-pinch device for an elevator. The anti-pinch device is characterized in that an opening for a display screen to enter and exit is formed in the top of a shell; the lifting assembly is arranged in the shell, and the display is arranged on the lifting assembly; one end of the cover plate is arranged on the shell, and the cover plate is located at the opening; the anti-pinch assembly is arranged in the shell, when the lifting assembly controls the display screen to ascend, the anti-pinch assembly controls the cover plate to be opened, and when the lifting assembly controls the display screen to descend, the anti-pinch assembly controls the cover plate to be closed. Through the arrangement of the anti-pinch assembly and the lifting assembly, when the display screen needs to be used, the lifting assembly controls the display screen to ascend, meanwhile, the anti-pinch assembly is matched to open the cover plate, when the display screen is not used, the lifting assembly controls the display screen to descend, meanwhile, the anti-pinch assembly is pressed downwards to close the cover plate, and the cover plate is closed through the cooperation of the lifting assembly and the anti-pinch assembly. The phenomenon that the display screen gets stuck in the ascending or descending process is avoided, compared with an infrared sensing device, the anti-pinch device is more sensitive, and the structure of the anti-pinch device is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to a hand clamping prevention device, in particular to a hand clamping prevention device of an elevator. BACKGROUND

[0002] Liquid crystal display screen lift is very popular in today's conference rooms, which has the advantages that the display can be hidden under the desktop when not in use, which not only makes the conference room desktop more neat and beautiful, but also plays a role in dustproof and theftproof. However, during the use of the display lift, especially when the display is lowered and the hatch is closed, it is easy to cause hand clamping accidents due to the accidental placement of fingers or other foreign matters at the hatch, causing trouble to the user and posing a certain safety hazard.

[0003] The existing hatch hand clamping prevention device for liquid crystal display screen lift on the market mostly adopts infrared induction and relatively complex mechanical structure. However, the hatch hand clamping prevention device using infrared induction can only respond to hands, and the use of relatively complex mechanical structures such as travel switches will have the problems of insufficient sensitivity and easy jamming. CONTENT OF THE INVENTION

[0004] The present application provides a hand clamping prevention device of an elevator to solve the problems in the related art, and the technical solution is as follows:

[0005] The present application provides a hand clamping prevention device of an elevator, which comprises:

[0006] A shell, the top of the shell has an opening for the display screen to enter and exit;

[0007] A lifting assembly, the lifting assembly is arranged in the shell, and the display is arranged on the lifting assembly;

[0008] A cover plate, one end of the cover plate is arranged on the shell, and the cover plate is located at the opening;

[0009] A hand clamping prevention assembly, the hand clamping prevention assembly is arranged in the shell, when the lifting assembly controls the display screen to rise, the hand clamping prevention assembly controls the cover plate to open, and when the lifting assembly controls the display screen to descend, the hand clamping prevention assembly controls the cover plate to close.

[0010] In one embodiment,

[0011] The lifting assembly comprises:

[0012] A slide rail, the slide rail is arranged inside the shell;

[0013] A motor support, the motor support is arranged in the shell, and the motor support moves along the slide rail;

[0014] Two support swing rods, the two support swing rods are arranged at two ends of the motor support;

[0015] The screen support is arranged on the two support swing rods respectively, and the display screen is arranged on the screen support.

[0016] The driving assembly is arranged on the motor support to adjust the position of the motor support relative to the shell.

[0017] In one embodiment,

[0018] The driving assembly comprises:

[0019] The synchronous motor is arranged on the motor support.

[0020] The belt gear is arranged on the driving end of the synchronous motor.

[0021] The belt is arranged on the shell, and the belt gear is engaged with the belt.

[0022] In one embodiment,

[0023] The motor support has a protrusion.

[0024] In one embodiment,

[0025] The anti-pinch hand assembly comprises:

[0026] The connecting rod is arranged in the shell.

[0027] The protrusion is arranged on the connecting rod, and the protrusion is located below the protrusion. When the motor support is pressed down, the protrusion presses the protrusion to move the connecting rod.

[0028] The first spring is arranged on the shell at one end and on the connecting rod at the other end. When the motor support moves upward, the first spring contracts to reset the connecting rod.

[0029] The swing rod is arranged on the shell, and one end of the swing rod is connected to the end of the connecting rod away from the protrusion. When the motor support moves upward, the connecting rod drives the swing rod to move to open the cover plate.

[0030] In one embodiment,

[0031] The anti-pinch hand assembly further comprises:

[0032] The second spring is arranged on the connecting rod at one end and on the shell at the other end, and the first spring is located on the other side of the second spring.

[0033] In one embodiment,

[0034] The middle part of the swing rod is arranged on the shell through a rotating shaft, one end of the swing rod is connected to the connecting rod, and the other end is in contact with the cover plate.

[0035] In one embodiment,

[0036] The swing rod is arranged in an arc shape.

[0037] In one embodiment,

[0038] The end of the connecting rod connected with the swing rod has a bending part.

[0039] In one embodiment,

[0040] The shell has a sliding groove matched with the movement track of the connecting rod and the swing rod.

[0041] The advantages or beneficial effects of the above technical solutions at least include:

[0042] Through the arrangement of the anti-pinch hand assembly and the lifting assembly, when the display screen needs to be used, the lifting assembly controls the display screen to rise, and the anti-pinch hand assembly cooperates to make the cover plate open, when not in use, the lifting assembly controls the display screen to descend, and at the same time, the anti-pinch hand assembly is pressed down to make the cover plate close, through the cooperation of the lifting assembly and the anti-pinch hand assembly, the phenomenon of jamming in the process of rising or descending of the display screen is avoided, which is more sensitive than the infrared sensing device, and the structure of the anti-pinch hand device is simplified.

[0043] The above summary is intended to illustrate only and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0044] In the drawings, like reference numerals are used to indicate like parts throughout the various figures. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.

[0045] Figure 1 It is a structural schematic view of the utility model;

[0046] Figure 2 It is a structural schematic view of the slide rail;

[0047] Figure 3 It is Figure 2 It is a structural schematic view of the synchronous motor from another perspective;

[0048] Figure 4 It is a structural schematic view of the anti-pinch hand assembly;

[0049] Figure 5 It is a structural schematic view of the anti-pinch hand assembly from another perspective;

[0050] 100. A hand clamping prevention device;

[0051] 110. A housing; 111. An opening; 112. A sliding slot;

[0052] 120. A lifting assembly; 121. A sliding rail; 122. A motor support; 1221. A protrusion; 123. A support swing lever; 124. A screen support; 125. A driving assembly; 1251. A synchronous motor; 1252. A belt gear; 1253. A belt;

[0053] 130. A cover plate;

[0054] 140. A hand clamping prevention assembly; 141. A connecting rod; 1411. A bent portion; 142. A protrusion; 143. A first spring; 144. A swing lever; 145. A second spring. DETAILED DESCRIPTION

[0055] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0056] Figures 1-5 A structural diagram of an elevator hand clamping prevention device 100 according to an embodiment of the present application is shown. As shown, the hand clamping prevention device 100 comprises: Figures 1-5

[0057] A housing 110, the top of the housing 110 has an opening 111 for the display screen to enter and exit;

[0058] A lifting assembly 120, the lifting assembly 120 is arranged in the housing 110, and the display is arranged on the lifting assembly 120;

[0059] A cover plate 130, one end of the cover plate 130 is arranged on the housing 110, and the cover plate 130 is located at the opening 111;

[0060] A hand clamping prevention assembly 140, the hand clamping prevention assembly 140 is arranged in the housing 110, when the lifting assembly 120 controls the display screen to rise, the hand clamping prevention assembly 140 controls the cover plate 130 to open, and when the lifting assembly 120 controls the display screen to descend, the hand clamping prevention assembly 140 controls the cover plate 130 to close.

[0061] ​In the embodiment, the display screen is controlled to move up and down by the lifting assembly 120. In the initial state, the display screen is located inside the shell 110. The anti-pinch hand assembly 140 is fixed in position under the pressure of the lifting assembly 120. The lifting assembly 120 is started to move the display screen to the outside of the shell 110. When the lifting assembly 120 is started and pushes the display screen to move to the outside of the shell 110, the anti-pinch hand assembly 140 is retracted and pushes the cover plate 130 to slowly open, so that the display screen assembly is pushed to the outside of the shell 110. When the display screen is moved from the outside of the shell 110 to the inside of the shell 110, the lifting assembly 120 presses the anti-pinch hand assembly 140 again, so that the anti-pinch hand assembly 140 is relaxed, and the cover plate 130 is closed under the action of gravity.

[0062] When the display screen needs to be used, the lifting assembly 120 controls the display screen to move up, and the anti-pinch hand assembly 140 cooperates to open the cover plate 130. When the display screen is not used, the lifting assembly 120 controls the display screen to move down, and presses the anti-pinch hand assembly 140 to close the cover plate 130. Through the cooperation of the lifting assembly 120 and the anti-pinch hand assembly 140, the phenomenon of jamming during the movement of the display screen up or down is avoided. Compared with the infrared sensing device, the anti-pinch hand device 100 is more sensitive and the structure is simplified.

[0063] As shown in FIG. 1, Figures 1-5 in an embodiment,

[0064] The lifting assembly 120 comprises:

[0065] A sliding rail 121 is arranged inside the shell 110.

[0066] A motor support 122 is arranged inside the shell 110. The motor support 122 moves along the sliding rail 121.

[0067] Two support swing rods 123 are arranged at two ends of the motor support 122.

[0068] A screen support 124 is arranged at two ends of the two support swing rods 123. A display screen is arranged on the screen support 124.

[0069] A driving assembly 125 is arranged on the motor support 122 to adjust the position of the motor support 122 relative to the shell 110.

[0070] In the embodiment, the motor support 122 slides along the sliding rail 121. The driving assembly 125 drives the motor support 122 to move, thereby driving the two support swing rods 123 to move, and thereby driving the screen support 124 to move the display screen, so that the display screen moves with the screen support 124.

[0071] When the motor support 122 pushes the display screen to move from outside to inside of the shell 110, the motor support 122 presses down the anti-pinch hand assembly 140, so that the cover plate 130 is closed;

[0072] When the motor support 122 pushes the display screen to move from inside to outside of the shell 110, the motor support 122 is separated from the anti-pinch hand assembly 140, the anti-pinch hand assembly 140 is relaxed, and moves upward, so that the cover plate 130 is opened;

[0073] As shown in FIG. 1, Figures 1-3 in an embodiment,

[0074] The driving assembly 125 comprises:

[0075] a synchronous motor 1251, which is arranged on the motor support 122;

[0076] a belt gear 1252, which is arranged on a driving end of the synchronous motor 1251;

[0077] a belt 1253, two ends of which are arranged on the shell 110, and the belt gear 1252 is engaged with the belt 1253.

[0078] In the embodiment, the belt 1253 is arranged on the shell 110, the belt gear 1252 and the synchronous motor 1251 are arranged on the motor support 122, the motor support 122 has a hole through which the belt 1253 passes, when the synchronous motor 1251 is started, the belt gear 1252 rotates, and under the action of the engagement between the belt gear 1252 and the belt 1253, the belt gear 1252 drives the motor support 122 to move along the belt 1253;

[0079] Further, the two ends of the belt 1253 are installed on the shell 110 through a connecting block, through the arrangement of the connecting block, the belt 1253 is ensured to be taut, and then when the belt gear 1252 rotates, under the action of the engagement between the belt gear 1252 and the belt 1253, the motor support 122 is moved, so as to drive the movement of the display screen.

[0080] As shown in FIG. 1, Figures 4-5 in an embodiment,

[0081] The motor support 122 has a protruding part 1221.

[0082] In the embodiment, the protruding part 1221 on the motor support 122 corresponds to the anti-pinch hand assembly 140, through the arrangement of the protruding part 1221, when the motor support 122 moves towards the inside of the shell 110, the protruding part 1221 presses down the anti-pinch hand assembly 140, and then the anti-pinch hand assembly 140 is relaxed.

[0083] As shown in the figure, in an embodiment, Figures 4-5

[0084] The anti-pinch hand assembly 140 comprises:

[0085] A connecting rod 141, which is arranged in the shell 110;

[0086] A protrusion 142, which is arranged on the connecting rod 141, and is located below the protruding part 1221. When the motor support 122 is pressed down, the protruding part 1221 presses down the protrusion 142 to make the connecting rod 141 move;

[0087] A first spring 143, one end of which is arranged on the shell 110, and the other end is arranged on the connecting rod 141. When the motor support 122 moves upward, the first spring 143 contracts to reset the connecting rod 141;

[0088] A swing rod 144, which is arranged on the shell 110, and one end of which is connected to the end of the connecting rod 141 away from the protrusion 142. When the motor support 122 moves upward, the connecting rod 141 drives the swing rod 144 to move to open the cover plate 130.

[0089] In this embodiment, the protrusion 142 is arranged on the connecting rod 141. When the motor support 122 moves towards the inside of the shell 110, the protruding part 1221 presses down the protrusion 142, so that the connecting rod 141 moves downward, and then the first spring 143 relaxes. The movement of the connecting rod 141 drives the swing rod 144 to move, so that the cover plate 130 is closed. When the motor support 122 moves towards the outside of the shell 110, the protruding part 1221 does not contact the protrusion 142. At this time, the first spring 143 contracts to make the connecting rod 141 move upward, and then the swing rod 144 moves to lift the cover plate 130.

[0090] As shown in the figure, in an embodiment, Figures 4-5

[0091] The anti-pinch hand assembly 140 further comprises:

[0092] A second spring 145, one end of which is arranged on the connecting rod 141, and the other end is arranged on the shell 110. The first spring 143 is located on the other side of the second spring 145.

[0093] In this embodiment, the movement trajectories of the first spring 143 and the second spring 145, and the relaxation and contraction conditions are the same. By cooperating the first spring 143 with the second spring 145, it is ensured that the connecting rod 141 moves with the motor support 122.

[0094] As shown in the figure, in an embodiment, Figures 4-5 ​​​

[0095] The middle part of the swing rod 144 is arranged on the shell 110 through a rotating shaft, one end of the swing rod 144 is connected with the connecting rod 141, and the other end is in contact with the cover plate 130.

[0096] In the embodiment, the middle part of the swing rod 144 is arranged on the shell 110 through rotation, one end of the swing rod 144 is rotationally connected with the connecting rod 141, when the connecting rod 141 moves, the swing rod 144 rotates around the connecting part of the swing rod 144 and the shell 110 under the action of the connecting rod 141;

[0097] Further, the swing rod 144 is arranged in an arc shape, the end of the connecting rod 141 connected with the swing rod 144 has a bending part, the bending part 1411 of the connecting rod 141 is opposite to the arc of the arc swing rod 144, through the movement of the connecting rod 141, the swing rod 144 rotates around the connecting part of the swing rod 144 and the shell 110, and then the end of the swing rod 144 away from the connecting rod 141 moves, so that the opening and closing of the cover plate 130 are controlled.

[0098] It should be noted that one end of the cover plate 130 is connected with the shell 110 through a rotating shaft, and the other end is in contact with the swing rod 144.

[0099] As shown in the drawings, Figures 4-5 In one embodiment,

[0100] The shell 110 has a sliding groove 112 matched with the movement track of the connecting rod 141 and the swing rod 144.

[0101] In the embodiment, the sliding groove 112 matched with the movement track of the connecting rod 141 and the swing rod 144 is arranged on the shell 110, so that the connecting rod 141 and the swing rod 144 can move normally, and the movement track of the connecting rod 141 and the swing rod 144 is limited.

[0102] The functions of the modules in the devices in the embodiments of the utility model can be referred to the corresponding description in the above method, which will not be repeated here.

[0103] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0104] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0105] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, and these should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An elevator anti-pinch device, characterized in that The device comprises: a housing, the top of which has an opening for the display screen to enter and exit; a lifting assembly arranged in the housing, a display arranged on the lifting assembly; a cover plate, one end of which is arranged on the housing, the cover plate being located at the opening; a hand clamping prevention assembly arranged in the housing, the hand clamping prevention assembly controlling the cover plate to open when the lifting assembly controls the display screen to rise, and the hand clamping prevention assembly controlling the cover plate to close when the lifting assembly controls the display screen to descend.

2. The hand clamping prevention device of the elevator according to claim 1, wherein the lifting assembly comprises: a slide rail arranged inside the housing; a motor support arranged in the housing, the motor support moving along the slide rail; two support swing rods arranged at two ends of the motor support; a screen support arranged at two ends of the two support swing rods, respectively, a display screen being mounted on the screen support; a driving assembly arranged on the motor support to adjust the position of the motor support relative to the housing.

3. The hand clamping prevention device of the elevator according to claim 2, wherein the driving assembly comprises: a synchronous motor arranged on the motor support; a belt gear arranged on the driving end of the synchronous motor; a belt arranged at two ends of the housing, the belt gear being engaged with the belt.

4. The hand clamping prevention device of the elevator according to claim 2, wherein the motor support has a protrusion.

5. The hand clamping prevention device of the elevator according to claim 4, wherein the hand clamping prevention assembly comprises: a connecting rod arranged in the housing; a protrusion arranged on the connecting rod, the protrusion being located below the protrusion of the motor support, the protrusion pressing the protrusion of the connecting rod to move the connecting rod when the motor support is pressed downward; a first spring, one end of which is arranged on the housing and the other end of which is arranged on the connecting rod, the first spring being contracted to reset the connecting rod when the motor support moves upward; a swing rod arranged on the housing, one end of the swing rod being connected to the end of the connecting rod away from the protrusion, the connecting rod driving the swing rod to move to open the cover plate when the motor support moves upward.

6. The hand clamping prevention device of the elevator according to claim 5, wherein the hand clamping prevention assembly further comprises: a second spring, one end of which is arranged on the connecting rod and the other end of which is arranged on the housing, the first spring being located on the other side of the second spring.

7. The hand clamping prevention device of the elevator according to claim 5, wherein the middle part of the swing rod is arranged on the housing through a rotating shaft, one end of the swing rod being connected to the connecting rod and the other end of the swing rod being in contact with the cover plate.

8. The hand clamping prevention device of the elevator according to claim 7, wherein The swing rod is arranged in an arc shape.

9. The anti-pinch device for an elevator as set forth in claim 8, wherein The end of the link rod connected to the swing rod has a bending part.

10. The anti-pinch device for an elevator as set forth in claim 8, wherein The outer shell has a sliding groove adapted to the movement track of the link rod and the swing rod.

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