Manual-automatic dual-mode folding locking mechanism for electric wheelchair

Abstract

The invention discloses a manual-automatic dual-mode folding locking mechanism for an electric wheelchair. The manual-automatic dual-mode folding locking mechanism comprises a transmission supporting frame, a seat supporting frame and a locking mechanism positioning piece. Wherein a locking slot is formed in the seat support frame; an insertion pin capable of being inserted into the locking slot is arranged in the locking mechanism positioning piece in a limiting manner; and an electric control transmission mechanism for adjusting the insertion pin to be inserted into the locking slot is arranged on the transmission support frame. Other parts are driven to move through cooperation of a ball screw transmission mechanism and a position switch, the rear wheel motor is utilized in the folding process, the automatic folding and locking function is achieved, a special rear wheel motor movement mode is provided, and the folding effect is good. The folding locking function of the intelligent wheelchair is convenient, automatic, exquisite and integrated. In addition, when the ball screw transmission mechanism and part of mechanism parts fail, folding and locking can be completed through manual operation, and the manual and automatic dual-mode folding and locking mechanism is achieved.

Description

Technical Field

[0001] The invention relates to the field of electric wheelchair locking mechanisms, and in particular to a manual-automatic dual-mode folding locking mechanism for an electric wheelchair. Background Art

[0002] Folding electric wheelchairs are widely used because they are foldable and easy to store and carry. The folding locking mechanism can be realized in many ways, but the current locking mechanisms mostly rely on manual operation, which has the problems of not being easy to operate and having a complex structure. The intuitiveness of the locking mechanism causes the locking mechanism to occupy a large volume and is relatively laborious.

[0003] At present, some existing folding locking mechanisms can achieve the above functions by pressing down and pulling up the connecting rod mechanism. However, due to the limitations of other external factors, the force applied by the user on the connecting rod is not completely consistent with the actual movement direction of the mechanism. There is a certain angle, which directly leads to the waste of force in the vertical direction. The intuitive manifestation is that the user operation is more laborious and coordination abnormalities are prone to occur. Some elderly users have a poor operating experience.

[0004] There is an urgent need for an automatic / manual folding and locking mechanism with simple operation and reliable structure that can achieve one-button automatic folding and locking, improve the performance of the electric wheelchair, and solve the pain points in the use of the wheelchair. Summary of the invention

[0005] The purpose of the present invention is to provide a manual-automatic dual-mode folding and locking mechanism for an electric wheelchair, so as to solve the problem that the traditional folding and locking mechanism is too complicated and completely relies on manual operation.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a manual-automatic dual-mode folding locking mechanism for an electric wheelchair, comprising a transmission support frame, a seat support frame hingedly connected to the transmission support frame through a central support shaft, and a locking mechanism positioning member arranged on the transmission support frame;

[0008] A locking slot is provided on the seat support frame;

[0009] An insertion pin which can be inserted into the locking slot is limitedly arranged in the locking mechanism positioning member;

[0010] An electric control transmission mechanism for adjusting the insertion pin to be inserted into the locking slot is arranged on the transmission support frame.

[0011] Furthermore, an arc segment is arranged on the seat support frame with the central support shaft as the axis, and blocks for limiting the locking mechanism positioning member are respectively provided at the two ends of the arc segment, and a position sensing switch II and a position sensing switch III for detecting the deflection position of the locking mechanism positioning member are respectively provided on the two blocks.

[0012] Furthermore, a movable cavity is provided in the locking mechanism positioning member to facilitate the extension and retraction of the insertion pin.

[0013] Furthermore, the electrically controlled transmission mechanism includes a sliding metal sheet limitedly disposed on the transmission support frame, a telescopic mechanism for adjusting the sliding of the sliding metal sheet on the transmission support frame, and an insertion pin transmission shaft for transmission connection between the sliding metal sheet and the insertion pin.

[0014] Furthermore, a first slide groove and a second slide groove are provided on the transmission support frame; one end of the sliding metal sheet can be slidably limited in the first slide groove through the straight slot transmission rod, and the other end of the sliding metal sheet can be slidably limited in the second slide groove through the insertion pin transmission shaft;

[0015] A limiting long groove is provided in the middle of the sliding metal sheet to facilitate sliding relative to the central support shaft;

[0016] Wherein, an insert pin transmission shaft limiting sleeve is sleeved on the insert pin transmission shaft, and a straight slot transmission rod sleeve is sleeved on the straight slot transmission rod;

[0017] An adjustment slot is provided on the insertion pin, one end of the insertion pin transmission shaft extends into the adjustment slot and is driven by the sliding metal sheet to adjust the position of the insertion pin. At the same time, the insertion pin is inserted into the locking slot with the assistance of the spring.

[0018] Furthermore, a telescopic mechanism is provided in the transmission support frame through the transmission mechanism support seat;

[0019] The telescopic mechanism includes a ball screw transmission mechanism fixed on the transmission mechanism support seat, and a nut extension kit which is transmission-connected to the ball screw transmission mechanism through a screw nut;

[0020] The straight notch transmission rod is fixedly arranged on the nut extension kit, and a straight notch transmission rod shaft sleeve penetrating the first sliding groove is sleeved on the straight notch transmission rod.

[0021] Furthermore, a position switch sensing component is arranged on the nut extension kit; and the position sensing switch I and the position sensing switch IV respectively corresponding to the position switch sensing component are arranged in the transmission support frame.

[0022] Furthermore, a positioning hole connected to the movable cavity inside the locking mechanism positioning piece is opened on the outside, and a locking pin connected to the insertion pin is arranged in the positioning hole, wherein a spring for adjusting the insertion pin to be embedded in the locking slot is sleeved on the locking pin of the movable cavity.

[0023] Compared with the prior art, the beneficial technical effects of the present invention are:

[0024] The present invention realizes the automatic folding and locking function of the electric wheelchair through a ball screw transmission mechanism, thereby solving the problem that the traditional folding and locking mechanism is too complicated and completely relies on manual operation. In addition, the folding and locking can be completed manually when the ball screw transmission mechanism and some parts of the mechanism fail, thereby realizing manual and automatic dual-mode folding and locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the main structure of the manual and automatic dual-mode folding and locking mechanism for an electric wheelchair of the present invention;

[0027] Figure 2 It is a schematic diagram of the exploded structure of the manual and automatic dual-mode folding and locking mechanism for an electric wheelchair of the present invention;

[0028] Figure 3 It is a schematic diagram of the front view of the folding locking mechanism;

[0029] Figure 4 It is a schematic diagram of the left side of the folding locking mechanism overview;

[0030] Figure 5 It is a rear view schematic diagram of the overview of the folding locking mechanism;

[0031] Figure 6 This is a front view schematic diagram of the folding locking mechanism in use state (the insertion pin is not pulled out);

[0032] Figure 7 This is a rear view schematic diagram of the folding locking mechanism in use (the insertion pin is not pulled out);

[0033] Figure 8 This is a front view schematic diagram of the folding locking mechanism in use (the insertion pin has been pulled out);

[0034] Fig. 9 This is a rear view schematic diagram of the folding locking mechanism in use (the insertion pin has been pulled out);

[0035] Fig.10 It is a front view schematic diagram of the folding locking mechanism in the folded state (the insertion pin is not pulled out);

[0036] Fig.11 It is a rear view schematic diagram of the folding locking mechanism in the folded state (the insertion pin is not pulled out);

[0037] Fig.12 It is a schematic diagram of the front view of the folding locking mechanism in the folded state (the insertion pin has been pulled out);

[0038] Fig.13 It is a rear view schematic diagram of the folding locking mechanism in the folded state (the insertion pin has been pulled out);

[0039] Fig.14 This is a structural diagram of the use status of a foldable wheelchair;

[0040] Fig.15 This is a rear view structural diagram of a foldable wheelchair in use;

[0041] Fig.16 This is a structural diagram of a foldable wheelchair in the folded state.

[0042] Description of reference numerals:

[0043] 1-1, transmission support frame; 1-2, transmission mechanism support seat; 1-3, ball screw transmission mechanism; 1-4, position sensing switch I; 1-5, screw nut; 1-6, nut extension kit; 1-7, straight slot transmission rod; 1-8, straight slot transmission rod sleeve; 1-9, sliding metal sheet; 1-10, position switch sensing element; 1-11, first slide groove; 1-12, first hinge reserved hole; 1-13, second slide groove; 1-14, position sensing Switch IV; 2-1, center support shaft; 2-2, seat support frame; 2-3, insert pin drive shaft; 2-4, insert pin drive shaft limit sleeve; 2-5, locking mechanism positioning piece; 2-51, positioning hole; 2-6, insert pin; 2-61, adjustment slide groove; 2-7, spring; 2-8, locking pin; 2-9, position sensing switch II; 2-10, position sensing switch III; 2-11, second hinge reserved hole; 2-12, locking slot. DETAILED DESCRIPTION

[0044] The present embodiment discloses a manual-automatic dual-mode folding locking mechanism for an electric wheelchair, comprising a transmission support frame 1-1, a seat support frame 2-2 hingedly connected to the transmission support frame 1-1 via a central support shaft 2-1, and a locking mechanism positioning member 2-5 installed on the transmission support frame 1-1; wherein a locking slot 2-12 is provided on the seat support frame 2-2; an insertion pin 2-6 which can be inserted into the locking slot 2-12 is limitedly installed in the locking mechanism positioning member 2-5; and an electrically controlled transmission mechanism for adjusting the insertion pin 2-6 into the locking slot 2-12 is installed on the transmission support frame 1-1.

[0045] In this embodiment, Figure 2 and Figure 5 As shown, an arc segment is formed on the seat support frame 2-2 with the central support shaft 2-1 as the axis, and blocks for limiting the locking mechanism positioning member 2-5 are respectively provided at the two ends of the arc segment, and a position sensing switch II2-9 and a position sensing switch III2-10 for detecting the deflection position of the locking mechanism positioning member 2-5 are respectively installed on the two blocks; in a specific implementation, the detection signals of the position sensing switch II2-9 and the position sensing switch III2-10 can be respectively used as sensors for controlling the electric control transmission mechanism to perform the action, and respectively as a locking signal after opening or a signal that locking is required after folding.

[0046] In this embodiment, a movable cavity is provided in the locking mechanism positioning member 2-5 to facilitate the extension and retraction of the insertion pin 2-6.

[0047] The electrically controlled transmission mechanism includes a sliding metal sheet 1-9 limitedly installed on the transmission support frame 1-1, a telescopic mechanism for adjusting the sliding of the sliding metal sheet 1-9 on the transmission support frame 1-1, and an insertion pin transmission shaft 2-3 for transmission connection between the sliding metal sheet 1-9 and the insertion pin 2-6; specifically, the insertion pin transmission shaft 2-3 passes through the outer wall of the shell structure of the locking mechanism positioning member 2-5 and is transmission-connected to the insertion pin 2-6.

[0048] In this embodiment, Figure 2 As shown, a first slide groove 1-11 and a second slide groove 1-13 are provided on the transmission support frame 1-1; one end of the sliding metal sheet 1-9 can be slidably limited in the first slide groove 1-11 through the straight groove transmission rod 1-7, and the other end of the sliding metal sheet 1-9 can be slidably limited in the second slide groove 1-13 through the insertion pin transmission shaft 2-3; wherein a limiting long groove is also provided in the middle part of the sliding metal sheet 1-9 for facilitating sliding relative to the central support shaft 2-1; wherein an insert pin transmission shaft limiting sleeve 2-4 is sleeved on the insert pin transmission shaft 2-3, and a straight groove transmission rod sleeve 1-8 is sleeved on the straight groove transmission rod 1-7.

[0049] An adjustment groove 2-61 is provided on the insertion pin 2-6, one end of the insertion pin transmission shaft 2-3 extends into the adjustment groove 2-61, and is driven by the sliding metal sheet 1-9 to adjust the position of the insertion pin 2-6 relative to the locking slot 2-12. At the same time, the insertion pin 2-6 is inserted into the locking slot 2-12 with the assistance of the spring 2-7.

[0050] When in use, the insertion pin drive shaft 2-3 is driven to slide by the sliding metal sheet 1-9, thereby driving the insertion pin 2-6 to be inserted into or away from the locking slot 2-12; at the same time, the stopper limited by the locking mechanism positioning member 2-5 contacts the end stopper of the arc section of the seat support frame 2-2, thereby achieving effective and stable support.

[0051] In this embodiment, Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, a telescopic mechanism is installed in the transmission support frame 1-1 through the transmission mechanism support seat 1-2; the telescopic mechanism includes a ball screw transmission mechanism 1-3 fixed on the transmission mechanism support seat 1-2, and a nut extension kit 1-6 that is connected to the ball screw transmission mechanism 1-3 through a screw nut 1-5; wherein the straight slot transmission rod 1-7 is fixedly arranged on the nut extension kit 1-6, and a straight slot transmission rod sleeve 1-8 that passes through the first slide groove 1-11 is sleeved on the straight slot transmission rod 1-7.

[0052] In this embodiment, a position switch sensor 1-10 is installed on the nut extension kit 1-6; the position sensing switch Ⅰ1-4 and the position sensing switch ⅠV1-14 corresponding to the position switch sensor 1-10 are installed in the transmission support frame 1-1; thereby, the position switch sensor 1-10, the position sensing switch Ⅰ1-4 and the position sensing switch ⅠV1-14 are used to detect the position (maximum telescopic range) of the nut extension kit 1-6 to prevent it from over-extension.

[0053] In this embodiment, Figure 7 As shown, an active cavity is provided in the locking mechanism positioning member 2-5 to facilitate the extension and retraction of the insertion pin 2-6. A positioning hole 2-51 connected to the active cavity is provided on the outside of the locking mechanism positioning member 2-5, and a locking pin 2-8 connected to the insertion pin 2-6 is installed through the positioning hole 2-51, wherein a spring 2-7 for adjusting the insertion pin 2-6 to be inserted into the locking slot 2-12 is sleeved on the locking pin 2-8 of the active cavity.

[0054] When in use, if the ball screw transmission mechanism 1-3 of the electric control transmission mechanism fails or loses power, the locking pin 2-8 can be manually pulled out to pull the insertion pin 2-6 out of the locking slot 2-12. When the seat support frame 2-2 is rotated to the locking slot in the folded state, due to the elastic potential energy of the spring 2-7, the locking pin 2-8 is released at this time and automatically springs into the corresponding locking slot to complete the manual folding and locking.

[0055] In this embodiment, the mechanism installation steps are as follows: First, install the position sensing switches I and II, insert the screws from the upper operating holes, and fix them with nuts at the bottom; insert the ball screw transmission mechanism 1-3 without the transmission mechanism support seat 1-2, fix it from the lower operating hole, and be careful not to touch the position switch, and install the transmission mechanism support seat 1-2. Put the straight slot transmission rod sleeve 1-8 into the first slide groove 1-11, insert the sliding metal sheet 1-9 from the end of the transmission support frame 1-1, connect the above parts with the straight slot transmission rod 1-7 and fix them with threads. Insert the insert pin drive shaft 2-3 into the positioning hole at the other end of the sliding metal sheet 1-9, the second notch 1-13 and the insert pin drive shaft limiting sleeve 2-4 in sequence, and fix the end with a nut; put the insert pin 2-6 and the spring 2-7 into the active cavity of the locking mechanism positioning piece 2-5, and at the same time connect the locking pin 2-8 and the insert pin 2-6 through the positioning hole 2-51; fix the locking mechanism positioning piece 2-5 according to the threaded hole of the transmission support frame 1-1.

[0056] The usage state changes to the folded state:

[0057] like Figure 6 and Figure 8 As shown, after the user presses the "fold" button on the controller (starting the ball screw transmission mechanism 1-3), the ball screw transmission mechanism 1-3 drives the screw nut 1-5 to move to a fixed stroke along the direction of the first slide groove 1-11, which is detected by the position sensing switch IV1-14, and the ball screw transmission mechanism 1-3 stops;

[0058] like Figure 7 and Fig. 9 As shown, since the movement direction of the insertion pin 2-6 is parallel to the movement direction of the ball screw transmission mechanism 1-3, the strokes are equal. At this time, the insertion pin 2-6 is pulled out of the locking slot 2-12 ( Fig. 9 status shown).

[0059] When the electric wheelchair is in use and the insertion pin 2-6 is pulled out, the user controls the rear wheel motor to rotate by pressing the "folding lock auxiliary drive mode" button on the controller. Since the insertion pin 2-6 is pulled out, the rear wheel motor will drive the rear frame of the electric wheelchair to move forward. The specific state is as follows: Fig.14 , Fig.15 and Fig.16As shown, that is, based on the clockwise movement at the center axis of the front frame, until the position sensing switch III2-10 below contacts the corresponding plane of the locking mechanism positioning piece 2-5, at this time, the insertion pin 2-6 is coaxial with the corresponding position hole, and the position sensing switch III2-10 sends a signal, the "folding locking auxiliary drive mode" ends, and the ball screw transmission mechanism 1-3 drives the screw nut 1-5 to move in the opposite direction, and at the same time drives the insertion pin transmission shaft 2-3 that cooperates with the adjustment slide groove 2-61 to move in the same direction, gradually releasing the restriction on the insertion pin 2-6, until the position switch sensing piece 1-10 on the screw nut 1-5 is detected by the upper position sensing switch I1-4, and the ball screw transmission mechanism 1-3 stops; at the same time, the insertion pin 2-6 enters the locking slot 2-12 through the elastic potential energy of the spring 2-7 (as shown in FIG. Figure 7 The automatic folding and locking process is completed.

[0060] The rear wheel motor in this "folding lock auxiliary drive mode" is different from that in normal driving state. During the movement in this mode, the rear wheel motor is always in a low speed state, and drives the rear frame to rotate to the corresponding position sensing switch stably, uniformly, safely and accurately, so that it can accurately sense the corresponding plane of the locking mechanism positioning part, and then send out a signal to ensure that the subsequent movement is completed accurately.

[0061] At the same time, in order to prevent the user from accidentally touching the "folding lock auxiliary drive mode" button on the controller, thereby causing unnecessary damage to the entire mechanism, this button also has an anti-mistouch function. The principle of this anti-mistouch function is to Figure 8 The state of the position sensing switch IV1-14 in the wheelchair is used to determine whether the current state of the wheelchair meets the requirements of the "folding lock auxiliary drive mode" button.

[0062] From the above description, it can be known that when the wheelchair is in use, if the insertion pin 2-6 is in the pulled-out state, that is, when the position sensing switch IV1-14 below detects the position switch sensing element 1-10 and sends a signal (such as Figure 8 If the insertion pin is in the inserted state (as shown in the figure), press the "folding lock auxiliary driving mode" button to realize the auxiliary folding lock function normally; if the insertion pin is in the inserted state (as shown in the figure), press the "folding lock auxiliary driving mode" button to realize the auxiliary folding lock function normally. Fig.10 As shown), at this time, the position sensing switch IV1-14 does not detect the corresponding plane of the position switch sensing member 1-10, which does not meet the use conditions. It is necessary to use the relevant motor control program to not start the folding lock auxiliary drive mode to achieve the purpose of preventing accidental touch.

[0063] The folded state becomes the used state:

[0064] like Fig.10 and Fig.12As shown, after the user presses the "fold" button on the remote control (the ball screw transmission mechanism 1-3 is started), the ball screw transmission mechanism 1-3 drives the screw nut 1-5 to move to a fixed stroke along the direction of the first slide groove 1-11, which is detected by the position sensing switch IV1-14, and the ball screw transmission mechanism 1-3 stops. Fig.13 As shown, the insertion pin 2-6 is pulled out from the locking slot 2-12.

[0065] The insertion pin 2-6 is in the pulled-out state at this time. Due to the gravity of the wheelchair as a whole, the seat support frame 2-2 will rotate clockwise (that is, the wheelchair becomes in use). When the position sensing switch II2-9 contacts the corresponding plane of the locking mechanism positioning member 2-5, the insertion pin 2-6 is coaxial with the locking slot 2-12 (such as Fig. 9 As shown), the position sensing switch II2-9 sends a signal, the ball screw transmission mechanism 1-3 drives the screw nut 1-5 to move in the opposite direction of the first slide groove 1-11, and at the same time drives the insertion pin transmission shaft 2-3 that cooperates with the adjustment slide groove 2-61 to move in the same direction, gradually releasing the restriction on the insertion pin 2-6, until the position switch sensing member 1-10 on the screw nut 1-5 is detected by the position sensing switch I1-4, and the ball screw transmission mechanism 1-3 stops; at the same time, the insertion pin 2-6 enters the locking slot 2-12 through the elastic potential energy of the spring 2-7 (as shown in FIG. Figure 7 ) to complete the movement process of the mechanism.

[0066] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solutions of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A manual and automatic dual-mode folding and locking mechanism for an electric wheelchair, characterized in that: It comprises a transmission support frame (1-1), a seat support frame (2-2) hingedly connected to the transmission support frame (1-1) via a central support shaft (2-1), and a locking mechanism positioning member (2-5) arranged on the transmission support frame (1-1); A locking slot (2-12) is provided on the seat support frame (2-2); An insertion pin (2-6) which can be inserted into the locking slot (2-12) is provided in a limited position in the locking mechanism positioning member (2-5); An electric control transmission mechanism for adjusting the insertion pin (2-6) to be inserted into the locking slot (2-12) is arranged on the transmission support frame (1-1).

2. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 1, characterized in that: An arc segment is arranged on the seat support frame (2-2) with the central support shaft (2-1) as the axis, and blocks for limiting the locking mechanism positioning member (2-5) are respectively arranged at the two ends of the arc segment, and a position sensing switch II (2-9) and a position sensing switch III (2-10) for detecting the deflection position of the locking mechanism positioning member (2-5) are respectively arranged on the two blocks.

3. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 1, characterized in that: An active cavity is provided in the locking mechanism positioning member (2-5) to facilitate the extension and retraction of the insertion pin (2-6).

4. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 3, characterized in that: The electric control transmission mechanism comprises a sliding metal sheet (1-9) limitedly arranged on the transmission support frame (1-1), a telescopic mechanism for adjusting the sliding of the sliding metal sheet (1-9) on the transmission support frame (1-1), and an insertion pin transmission shaft (2-3) for transmission connection between the sliding metal sheet (1-9) and the insertion pin (2-6).

5. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 4, characterized in that: A first slide groove (1-11) and a second slide groove (1-13) are provided on the transmission support frame (1-1); one end of the sliding metal sheet (1-9) can be slidably limited in the first slide groove (1-11) through a straight slot transmission rod (1-7), and the other end of the sliding metal sheet (1-9) can be slidably limited in the second slide groove (1-13) through the insertion pin transmission shaft (2-3); A long limiting groove is provided in the middle of the sliding metal sheet (1-9) to facilitate sliding relative to the central support shaft (2-1); The insert pin transmission shaft (2-3) is sleeved with an insert pin transmission shaft limiting sleeve (2-4), and the straight slot transmission rod (1-7) is sleeved with a straight slot transmission rod sleeve (1-8); An adjusting slot (2-61) is provided on the insertion pin (2-6), one end of the insertion pin transmission shaft (2-3) extends into the adjusting slot (2-61), and is driven by the sliding metal sheet (1-9) to adjust the position of the insertion pin (2-6), and at the same time, the insertion pin (2-6) is inserted into the locking slot (2-12) with the assistance of the spring (2-7).

6. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 5, characterized in that: A telescopic mechanism is arranged in the transmission support frame (1-1) via a transmission mechanism support seat (1-2); The telescopic mechanism comprises a ball screw transmission mechanism (1-3) fixed on the transmission mechanism support seat (1-2), and a nut extension kit (1-6) transmission-connected to the ball screw transmission mechanism (1-3) via a screw nut (1-5); The straight notch transmission rod (1-7) is fixedly arranged on the nut extension kit (1-6), and a straight notch transmission rod shaft sleeve (1-8) penetrating the first sliding groove (1-11) is sleeved on the straight notch transmission rod (1-7).

7. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 6, characterized in that: A position switch sensing component (1-10) is arranged on the nut extension kit (1-6); and the position sensing switch I (1-4) and the position sensing switch IV (1-14) respectively corresponding to the position switch sensing component (1-10) are arranged in the transmission support frame (1-1).

8. The manual-automatic dual-mode folding locking mechanism for an electric wheelchair according to claim 4, characterized in that: A positioning hole (2-51) connected to the active cavity inside the locking mechanism positioning member (2-5) is provided on the outside thereof, and a locking pin (2-8) connected to the insertion pin (2-6) is arranged in the positioning hole (2-51), wherein a spring (2-7) for adjusting the insertion pin (2-6) to be embedded in the locking slot (2-12) is sleeved on the locking pin (2-8) in the active cavity.

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