Electric cylinder with memory function and quick-release structure for it

Abstract

Quick-release structure (2) with a memory function arranged on an electric cylinder (10), wherein the electric cylinder (10) comprises a housing (11), a leadscrew (13), a worm shaft (121), and a worm wheel (21), wherein the worm wheel (21) is arranged at a terminal of the leadscrew (13) and engages with the worm shaft (121), wherein the quick-release structure (2) comprises: a coupling (22) designed to enclose and fix the leadscrew (13) and configured to rotate with the leadscrew (13); a coupling disc (23) which is configured to engage with the worm gear (21), to rotate with the worm gear (21) and to move relative to the coupling (22) in order to engage with or disengage from the coupling (22); a connecting rod component (3) which is movably arranged on the housing (11) and comprises a pullable part (31) which is arranged at one end thereof, wherein another end of the connecting rod component (3) is fixed to the clutch disc (23), wherein the connecting rod component (3) comprises a sliding block (32) which is arranged between the pullable part (31) and the clutch disc (23), wherein the pullable part (31) is configured to drive the sliding block (32) to move through the connecting rod component (3) and to drive the clutch disc (23) to disengage from the clutch (22); a position sensor (4) which is arranged and configured according to the sliding block (32) to detect a movement of the sliding block (32) and generate a displacement signal; and an alarm (5) which is set up to receive the displacement signal and send a warning.

Description

BACKGROUND OF THE DISCLOSURETechnical Area

[0001] The present disclosure relates to a structure of an electric cylinder, particularly, it relates to an electric cylinder having a memory function and a quick release structure thereof. Description of the state of the art

[0002] An electric cylinder (linear actuator) is installed on an electric hospital bed, treadmill, wheelchair, etc. to adjust the height or elevation angle. During first aid treatment of a patient, a quick-release structure is generally used to quickly release the electric cylinder, allowing the hospital bed to quickly return to a flat state, saving valuable first-aid time.

[0003] However, during the quick-release process of the electric cylinder, the hospital bed may fall rapidly in a very short period of time, and the resulting impact can easily cause panic in the patient. Therefore, activating an early warning function before the quick-release of the electric cylinder to improve safety is a key research and development focus of electric cylinder manufacturers.

[0004] In view of this, the inventor has studied this state of the art and tried to solve these problems by applying theories that have become the goal of the creator's improvement. SUMMARY OF REVELATION

[0005] The present disclosure provides an electric cylinder with a reminder function and a quick-release structure thereof. A pullable part can drive a sliding block to move through a connecting rod component and drive a clutch disc to disengage from a clutch. A position sensor detects movement of the sliding block and generates a displacement signal. An alarm receives the displacement signal and sends a warning. As a result, the electric cylinder and the quick-release structure with the function of initiating an early warning before quick release of the present disclosure can be achieved.

[0006] In the embodiment of the present disclosure, the present disclosure provides a quick release structure with a reminder function arranged on an electric cylinder, the electric cylinder including a housing, a lead screw, a worm shaft, and a worm wheel, the worm wheel being arranged on a terminal of the lead screw and engaging with the worm shaft, the quick release structure including: a clutch adapted to enclose and fix the lead screw and configured to rotate with the lead screw; a clutch disc configured to connect to the worm wheel, rotate with the worm wheel, and move relative to the clutch to connect to or disconnect from the clutch;a connecting rod component movably mounted on the housing and including a pullable member disposed at one end thereof, another end of the connecting rod component being fixed to the clutch disc, the connecting rod component including a sliding block disposed between the pullable member and the clutch disc, the pulling member configured to drive the sliding block to move through the connecting rod component and drive the clutch disc to disengage from the clutch; a position sensor disposed corresponding to the sliding block and configured to detect movement of the sliding block and generate a displacement signal; and an alarm configured to receive the displacement signal and send a warning.

[0007] In the embodiment of the present disclosure, the present disclosure provides an electric cylinder with a memory function, including: an electric cylinder main body including a housing and an electric motor, a lead screw, and a worm gear arranged in the housing, the electric motor including a worm shaft, the worm gear being arranged at a terminal of the lead screw and meshing with the worm shaft; and a quick-release structure including: a clutch adapted to wrap and fix the lead screw and configured to rotate with the lead screw; a clutch disc configured to connect to the worm gear, rotate with the worm gear, and move relative to the clutch to connect to or disconnect from the clutch;a connecting rod component movably mounted on the housing and including a pullable part disposed at one end thereof, another end of the connecting rod component being fixed to the clutch disc, the connecting rod component including a sliding block disposed between the pullable part and the clutch disc, the pulling part configured to drive the sliding block to move through the connecting rod component and drive the clutch disc and the worm gear to disengage from the clutch; a position sensor disposed corresponding to the sliding block and configured to detect movement of the sliding block and generate a displacement signal; and an alarm configured to receive the displacement signal and send a warning.

[0008] In summary, the process of pulling the pullable part can be performed by the connecting rod component driving the sliding block to move, and then driving the clutch disc and the clutch to separate from each other. Before a rocker arm is moved to separate the clutch disc and the clutch, the position sensor detects the movement of the sliding block and generates a displacement signal. The alarm receives the displacement signal and immediately sends a warning. As a result, the electric cylinder and the quick-release structure with the function of starting an early warning before quick release of the present disclosure can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of the assembled electric cylinder according to the present disclosure. Fig. 2 is an exploded perspective view of the connecting rod component, position sensor, and housing according to the present disclosure. Fig. 3 is another perspective view of the assembled electric cylinder according to the present disclosure. Fig. 4 is a schematic representation of the cross section of the electric cylinder according to the present disclosure. Fig. 5 is another schematic representation of the cross section of the electric cylinder according to the present disclosure. Fig. 6 is a perspective view of the electric cylinder in use according to the present disclosure. Fig. 7 is a partially enlarged schematic diagram of the electric cylinder according to the present disclosure. Fig. 8 is a perspective schematic diagram showing the lever being pulled according to the present disclosure. Fig. 9 is a perspective view showing the sliding block contacting the microswitch according to the present disclosure. Fig. 10 is a perspective schematic diagram showing the electric cylinder ready for quick release of the telescopic tube according to the present disclosure. Fig. 11 is a perspective schematic diagram showing the sliding block being further displaced according to the present disclosure. Fig. 12 is a perspective schematic diagram showing the electric cylinder that quickly releases the telescopic tube according to the present disclosure. DETAILED DESCRIPTION

[0009] The technical content of this disclosure will become clear from the detailed description of embodiments accompanying the illustration of the accompanying drawings as follows. The embodiments and drawings disclosed herein are intended to be considered as illustrative and not restrictive.

[0010] With reference to Fig. 1 to Fig. 12, the present disclosure provides an electric cylinder (Electric Cylinder) with a reminder function and a quick-release structure thereof. The electric cylinder 10 mainly includes an electric cylinder main body 1 and the quick-release structure 2. The quick-release structure 2 mainly includes a clutch 22, a clutch disc 23, a connecting rod component 3, a position sensor 4, and an alarm 5.

[0011] As in Fig. 1, Fig. 3 to Fig. 4 and Fig. 6 to Fig. 12, the electric cylinder main body 1 includes a housing 11, an electric motor 12, a lead screw 13, a nut 14, a worm gear 121, a telescopic tube 15, and an outer tube 16. The electric motor 12 and the lead screw 13 are arranged in the housing 11. The electric motor 12 includes a worm shaft 121. The lead screw 13 includes an external spiral tooth (external thread) 131. The nut 14 is configured to encase the lead screw 13 and engage in helical transmission with an external spiral tooth 131 of the lead screw 13. The outer tube 16 is connected to the housing 11. The telescopic tube 15 is encased in the nut 14, moves with the nut 14, and telescopes relative to the outer tube 16.The worm gear 21 is arranged in the housing 11, arranged at a terminal of the lead screw 13, and engages with the worm shaft 121 to cause the worm shaft 121 to engage with the worm gear 21 and drive the worm gear 21 to rotate.

[0012] As in Fig. 1 to Fig. 12, the quick release structure 2 includes the clutch 22, the clutch disc 23, the connecting rod component 3, the position sensor 4, and the alarm 5. The clutch 22 and the clutch disc 23 are arranged in the housing 11. The clutch 22 is configured to enclose and fix the lead screw 13 so as to rotate with the lead screw 13. The clutch disc 23 is configured to enclose the lead screw 13. The clutch disc 23 is configured to connect to the worm gear 21, rotate with the worm gear 21, and move relative to the clutch 22. In other words, the clutch disc 23 is movably arranged between the worm gear 21 and the clutch 22 to cause the clutch disc 23 to connect to or disconnect from the clutch 22.

[0013] Furthermore, the connecting rod component 3 is movably mounted on the housing 11 and includes a pullable part 31 located at one end thereof. Another end of the connecting rod component 3 is fixed to the clutch disc 23. The connecting rod component 3 includes a sliding block 32 located between the pullable part 31 and the clutch disc 23. The pullable part 31 can drive the sliding block 32 to move through the connecting rod component 3 and drive the clutch disc 23 to disengage from the clutch 22.

[0014] The connecting rod component 3 includes the sliding block 32, a rocker arm (swing arm) 33, a pull rod 34, and a cable component(s) 35. The sliding block 32 is movably mounted on the electric cylinder main body 1 and disposed on the outer tube 16 outside the housing 11. The rocker arm 33 is pivotally connected to the housing 11, and one end of the rocker arm 33 is fixed to the clutch disc 23. One end of the pull rod 34 is fixed to one end of the sliding block 32, and another end of the pull rod 34 is fixed to the rocker arm 33. A cable component(s) 35 is / are connected to another end of the sliding block 32 and partially exposed from an outer side of the sliding block 32 for a user to pull.

[0015] The quick release structure 2 further includes a support box frame 111 arranged on the outer tube 16, and a box cover 112 pivotally connected to the support box frame 111 and covering the support box frame 111.

[0016] The support box frame 111 includes two first holes 1111 and a second hole 1112, which are arranged at a front and a rear side, respectively.

[0017] The support box frame 111 includes two first slide rails 1113 extending from an inner periphery of a left side and a right side of the support box frame 111.

[0018] Furthermore, the slide block 32 of the embodiment includes a contact block 324 extending from one side of an outer periphery of the slide block 32, and two second slide rails 325 extending from a left side and a right side thereof, respectively. The two first slide rails 1113 are configured to respectively stop and restrict an upper surface of each of the two second slide rails 325, so that the slide block 32 is stopped by the first slide rail 1113 and can be prevented from detaching from above the support box frame 111. As a result, the slide block 32 can be stably and movably disposed in the support box frame 111. The support box frame 111 is disposed on the outer tube 16. In other words, the slide block 32 is movably disposed on the support box frame 111.

[0019] Furthermore, the sliding block 32 is defined with a container groove 321 and includes a front wall 322 and a rear wall 323 located on two sides of the container groove 321. Two first perforations 3221 are defined on the front wall 322 and correspond to the two first holes 1111. A second perforation 3231 is defined on the rear wall 323 and corresponds to the second hole 1112.

[0020] Furthermore, the pull rod 34 includes a removable rod 341, a screw nut 342, a positioning member 343, and a repositioning member 344. The screw nut 342 is disposed in the container groove 321. One end of the removable rod 341 is disposed through the second hole 1112 and the second perforation 3231 to be screwed to the screw nut 342, and another end of the removable rod 341 is fixed to the rocker arm 33 to cause the slide block 32, the removable rod 341, and the rocker arm 33 to be fixed to each other and move together. The positioning member 343 is fixed to the housing 11 and disposed between the screw nut 342 and the rocker arm 33. The repositioning member 344 is designed to enclose the removable rod 341 and be elastically supported between the positioning member 343 and the rocker arm 33.The repositioning element 344 of the embodiment is a coil spring and is not intended to be limiting. The repositioning element 344 is used to push the rocker arm 33 into a position where the clutch disc 23 and the clutch 22 are connected for resetting.

[0021] The rocker arm 33 of the embodiment is a U-shaped rocker arm 331 and is not intended to be limiting here. A central portion of the U-shaped rocker arm 331 is fixed to the removable rod 341. Two ends of the U-shaped rocker arm 331 are respectively fixed to two sides of the clutch disc 23. Two pivot points 3311 pivotally connected to the housing 11 are defined between the central portion of the U-shaped rocker arm 331 and the two ends of the U-shaped rocker arm 331. As a result, the removable rod 341 can drive the U-shaped rocker arm 331 to swing with two pivot points 3311 as the center to cause the U-shaped rocker arm 331 to translationally pull the clutch disc 23 between the worm gear 21 and the clutch 22.

[0022] The number of cable components 35 of the embodiment is two and is not intended to be limiting here. Each of the cable components 35 includes a cable body 351 disposed through the first hole 1111 and the respective first perforation 3221, a lever 352 attached to one end of the respective cable body 351, a stop block 353 attached to another end of the respective cable body 351, and an elastic member 354 configured to wrap the respective cable body 351. Each of the levers 352 is disposed outside the support box frame 111. The support box frame 111 is disposed on the outer tube 16 outside the housing 11. In other words, each of the levers 352 (part of the cable component 35) is exposed from the support box frame 111 and defines the pullable part 31 available for users to pull.Each of the stopper blocks 353 and each of the elastic members 354 is disposed in the container groove 321, and each of the elastic members 354 is elastically supported between each of the stopper blocks 353 and the front wall 322. As a result, when the lever 352 is pulled, the lever 352 can drive the cable body 351, the stopper block 353, and the slide block 32 to move sequentially. Then, the slide block 32 drives the removable rod 341 to move. The elastic member 354 of the embodiment is a coil spring and is not intended to be limiting here. The elastic member 354 is used to pull the lever 352 to a position abutting against the support box frame 111 to reset.

[0023] Furthermore, the position sensor 4 is arranged corresponding to the sliding block 32 and configured to detect movement of the sliding block 32 and generate a displacement signal. The alarm 5 is configured to receive the displacement signal and send a warning. The position sensor 4 of the embodiment includes a microswitch 41 configured to detect that it is touched by the touch block 324 and generate the displacement signal, but this is not intended to be limiting. The position sensor 4 can also be a capacitance sensor, a Hall effect sensor, an inductance sensor, a linear variable differential transformer (LVDT) sensor, a linear variable inductance transformer (LVIT) sensor, a magnetoresistive sensor, an optical sensor, or a resistive sensor. The alarm 5 is arranged on the support box frame 111 and this is not intended to be limiting.Alarm 5 can also be located on an external control box or other location. Alarm 5 can be a warning light or a buzzer. The warning light emits a light warning after receiving the displacement signal. The buzzer emits an audible warning after receiving the displacement signal.

[0024] As in the Fig. 5 to Fig. 12, these are the usage states of the electric cylinder 10 and the quick release structure 2 of the present disclosure. First, as shown in Fig. 5 to Fig. As shown in Figure 7, when the electric cylinder 10 is used to adjust a height or elevation angle of the general position, the worm gear 21 is connected to the clutch 22 through the clutch disc 23, causing the worm gear 121 to drive the lead screw 13 to rotate sequentially through the worm gear 21, the clutch disc 23, and the clutch 22. The lead screw 13 then drives the telescopic tube 15 to telescope relative to the outer tube 16 through the nut 14.

[0025] Furthermore, as in Fig. 8 to Fig.As shown in Figure 12, when a user needs the electric cylinder 10 to be quickly released or returned, the user pulls the lever 352. The lever 352 drives the cable body 351, the stop block 353, the slide block 32, the removable rod 341, and the rocker arm 33 to move in sequence. The rocker arm 33 moves the clutch disc 23 and the clutch 22 to separate from each other, causing the lead screw 13 to be not controlled by the worm gear 121 but to be pulled by the gravity of the nut 14 and rotate freely. As a result, the telescopic tube 15 can quickly retract into the outer tube 16, and the electric cylinder 10 and the quick-release structure 2 having the function of quickly returning the telescopic tube 15 of the present disclosure can be achieved.

[0026] Furthermore, the process of pulling the lever 352 can be performed by the stopper block 353 driving the slide block 32 to move, and then driving the clutch disc 23 and the clutch 22 to separate from each other. Before the rocker arm 33 is moved to separate the clutch disc 23 and the clutch 22, the contact block 324 of the slide block 32 contacts the microswitch 41 to cause the position sensor 4 to be triggered by the slide block 32 and generate a displacement signal. The alarm 5 issues a warning immediately after receiving the displacement signal. As a result, the electric cylinder 10 and the quick-release structure 2 can be achieved with the function of starting an early warning before the quick release of the present disclosure.

[0027] In summary, the electric cylinder with the reminder function and the quick release structure thereof of the present disclosure can achieve the intended purpose and solve the problem of the prior art, have industrial applicability, novelty and non-inventive step, meet the requirements of patent application, and can be applied according to the patent law to protect the rights of the creator(s).

Claims

[1] A quick release structure (2) with a reminder function arranged on an electric cylinder (10), the electric cylinder (10) comprising a housing (11), a lead screw (13), a worm shaft (121), and a worm wheel (21), the worm wheel (21) being arranged on a terminal of the lead screw (13) and engaging with the worm shaft (121), the quick release structure (2) comprising: a coupling (22) designed to enclose and fix the lead screw (13) and adapted to rotate with the lead screw (13); a clutch disc (23) adapted to connect to the worm wheel (21), rotate with the worm wheel (21) and move relative to the clutch (22) to connect to or disconnect from the clutch (22); a connecting rod component (3) movably mounted on the housing (11) and comprising a pullable member (31) disposed at one end thereof, another end of the connecting rod component (3) being fixed to the clutch disc (23), the connecting rod component (3) comprising a sliding block (32) disposed between the pullable member (31) and the clutch disc (23), the pullable member (31) being configured to drive the sliding block (32) to move through the connecting rod component (3) and to drive the clutch disc (23) to disengage from the clutch (22); a position sensor (4) arranged and arranged corresponding to the sliding block (32) to detect a movement of the sliding block (32) and to generate a displacement signal; and an alarm (5) configured to receive the displacement signal and send a warning. [2] A quick release structure (2) with a reminder function according to claim 1, wherein the sliding block (32) comprises: a touch block (324) extending from the slide block (32); wherein the position sensor (4) comprises: a microswitch (41) configured to detect that it is touched by the touch block (324) and to generate the displacement signal. [3] A quick release structure (2) with a reminder function according to claim 1, wherein the connecting rod component (3) comprises: the sliding block (32), a rocker arm (33), a pull rod (34) and at least one cable component (35); wherein the sliding block (32) is movably arranged on the electric cylinder (10) and is arranged outside the housing (11); wherein the rocker arm (33) is pivotally connected to the housing (11) and one end of the rocker arm (33) is fixed to the clutch disc (23); wherein one end of the pull rod (34) is fixed to one end of the sliding block (32) and another end of the pull rod (34) is fixed to the rocker arm (33); and wherein the at least one cable component (35) is connected to another end of the sliding block (32) and is partially exposed from the sliding block (32). [4] A quick release structure (2) with a reminder function according to claim 3, wherein a number of the cable components (35) is two; wherein the sliding block (32) comprises a container groove (321) defined thereon, a front wall (322) and a rear wall (323) arranged on two sides of the container groove (321); two first perforations (3221) are defined on the front wall (322); and each of the cable components (35) comprises: a rope body (351) arranged through the respective first perforation (3221); a lever (352) attached to one end of the respective cable body (351); a stop block (353) attached to another end of the respective rope body (351); and an elastic element (354) designed to cover the respective rope body (351); each of the levers (352) exposed from the sliding block (32) defines the pullable part (31); each of the stopper blocks (353) and each of the elastic members (354) are arranged in the container groove (321), and each of the elastic members (354) is elastically supported between each of the stopper blocks (353) and the front wall (322). [5] A quick release structure (2) with a reminder function according to claim 4, wherein a second perforation (3231) is defined on the rear wall (323); the pull rod (34) comprises a removable rod (341) and a screw nut (342); one end of the removable rod (341) is arranged through the second perforation (3231) and screwed to the screw nut (342); and another end of the removable rod (341) is attached to the rocker arm (33). [6] A quick release structure (2) with a reminder function according to claim 5, wherein the connecting rod component (3) further comprises: a support box frame (111) arranged outside the housing (11); and a box cover (112) pivotally connected to the support box frame (111) and covering the support box frame (111); the support box frame (111) comprises two first slide rails (1113) extending therefrom; the sliding block (32) is movably arranged in the support box frame (111); the slide block (32) comprises two second slide rails (325) each extending from a left side and a right side thereof; the two first slide rails (1113) are configured to stop and limit a top side of each of the two second slide rails (325); the position sensor (4) is arranged in the support box frame (111); two first holes (1111) are defined on the support box frame (111) and are configured to correspond to the two first perforations (3221) and to be arranged by the respective cable body (351); a second hole (1112) is defined on the support box frame (111) and is configured to correspond to the second perforation (3231) and to be arranged by the removable rod (341); and each of the levers (352) is arranged outside the support box frame (111). [7] A quick release structure (2) with a reminder function according to claim 5, wherein the pull rod (34) further comprises: a positioning element (343) and a repositioning element (344); wherein the positioning element (343) is fixed to the housing (11) and arranged between the screw nut (342) and the rocker arm (33); and the repositioning element (344) is designed to enclose the removable rod (341) and to be elastically supported between the positioning element (343) and the rocker arm (33). [8] A quick release structure (2) with a reminder function according to claim 5, wherein the rocker arm (33) is a U-shaped rocker arm (331); a central portion of the U-shaped rocker arm (331) is attached to the removable rod (341); two ends of the U-shaped rocker arm (331) are each attached to two sides of the clutch disc (23); and two pivot points (3311) pivotally connected to the housing (11) are defined between the central portion of the U-shaped rocker arm (331) and the two ends of the U-shaped rocker arm (331). [9] Electric cylinder (10) with a memory function, comprising: an electric cylinder main body (1) comprising a housing (11) and an electric motor (12), a lead screw (13) and a worm gear (21) arranged in the housing (11), wherein the electric motor (12) comprises a worm shaft (121), wherein the worm gear (21) is arranged at a terminal of the lead screw (13) and is engaged with the worm shaft (121); and a quick release structure (2) comprising: a coupling (22) designed to enclose and fix the lead screw (13) and configured to rotate with the lead screw (13); a clutch disc (23) adapted to connect to the worm wheel (21), rotate with the worm wheel (21) and move relative to the clutch (22) to connect to or disconnect from the clutch (22); a connecting rod component (3) movably mounted on the housing (11) and comprising a pullable member (31) disposed at one end thereof, another end of the connecting rod component (3) being fixed to the clutch disc (23), the connecting rod component (3) comprising a sliding block (32) disposed between the pullable member (31) and the clutch disc (23), the pullable member (31) being configured to drive the sliding block (32) to move through the connecting rod component (3) and to drive the clutch disc (23) and the worm gear (21) to disengage from the clutch (22); a position sensor (4) arranged corresponding to the sliding block (32) and arranged to detect a movement of the sliding block (32) and generate a displacement signal; and an alarm (5) configured to receive the displacement signal and send a warning. [10] An electric cylinder (10) with a memory function according to claim 9, wherein the sliding block (32) comprises: a touch block (324) extending from the slide block (32); wherein the position sensor (4) comprises: a microswitch (41) configured to detect that it is touched by the touch block (324) and to generate the displacement signal. [11] An electric cylinder (10) with a reminder function according to claim 9, wherein the connecting rod component (3) comprises: the sliding block (32), a rocker arm (33), a pull rod (34) and at least one cable component (35); wherein the sliding block (32) is movably arranged on the electric cylinder main body (1) and is arranged outside the housing (11); wherein the rocker arm (33) is pivotally connected to the housing (11) and one end of the rocker arm (33) is fixed to the clutch disc (23); wherein one end of the pull rod (34) is fixed to one end of the sliding block (32) and another end of the pull rod (34) is fixed to the rocker arm (33); and wherein the at least one cable component (35) is connected to another end of the sliding block (32) and is partially exposed from the sliding block (32). [12] An electric cylinder (10) with a reminder function according to claim 11, wherein a number of said cable components (35) is two; wherein the sliding block (32) comprises a container groove (321) defined thereon, a front wall (322) and a rear wall (323) arranged on two sides of the container groove (321); two first perforations (3221) are defined on the front wall (322); and each of the cable components (35) comprises: a rope body (351) arranged through the respective first perforation (3221); a lever (352) attached to one end of the respective cable body (351); a stop block (353) attached to another end of the respective rope body (351); and an elastic element (354) designed to cover the respective rope body (351); each of the levers (352) exposed from the sliding block (32) defines the pullable part (31); each of the stopper blocks (353) and each of the elastic members (354) are arranged in the container groove (321), and each of the elastic members (354) is elastically supported between each of the stopper blocks (353) and the front wall (322). [13] An electric cylinder (10) with a memory function according to claim 12, wherein a second perforation (3231) is defined on the rear wall (323); the pull rod (34) comprises a removable rod (341) and a screw nut (342); one end of the removable rod (341) is arranged through the second perforation (3231) and screwed to the screw nut (342); and another end of the removable rod (341) is attached to the rocker arm (33). [14] An electric cylinder (10) with a reminder function according to claim 13, wherein the connecting rod component (3) further comprises: a support box frame (111) arranged outside the housing (11); and a box cover (112) pivotally connected to the support box frame (111) and covering the support box frame (111); the support box frame (111) comprises two first slide rails (1113) extending therefrom; the sliding block (32) is movably arranged in the support box frame (111); the slide block (32) comprises two second slide rails (325) each extending from a left side and a right side thereof; the two first slide rails (1113) are arranged to stop and limit a top side of each of the two second slide rails (325); the position sensor (4) is arranged in the support box frame (111); two first holes (1111) are defined on the support box frame (111) and are arranged to correspond to the two first perforations (3221) and to be arranged by the respective rope body (351); a second hole (1112) is defined on the support box frame (111) and is arranged to correspond to the second perforation (3231) and to be arranged by the removable rod (341); and each of the levers (352) is arranged outside the support box frame (111). [15] Electric cylinder (10) with a reminder function according to claim 13, wherein the pull rod (34) further comprises: a positioning element (343) and a repositioning element (344); wherein the positioning element (343) is fixed to the housing (11) and arranged between the screw nut (342) and the rocker arm (33); the repositioning element (344) is designed to enclose the removable rod (341) and to be elastically supported between the positioning element (343) and the rocker arm (33). [16] An electric cylinder (10) with a reminder function according to claim 13, wherein the rocker arm (33) is a U-shaped rocker arm (331); a central portion of the U-shaped rocker arm (331) is attached to the removable rod (341); two ends of the U-shaped rocker arm (331) are each attached to two sides of the clutch disc (23); and two pivot points (3311) pivotally connected to the housing (11) are defined between the central portion of the U-shaped rocker arm (331) and the two ends of the U-shaped rocker arm (331).

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