Pen type electric push rod with built-in feedback signal

Abstract

The utility model discloses a pen type electric push rod with a built-in feedback signal, and relates to the technical field of electric push rods, the pen type electric push rod comprises a housing, a push rod and a protective housing, the outer wall of the housing is provided with a mounting groove, the mounting groove is internally provided with a gear motor, the extension end of the gear motor penetrates into the housing and is fixedly connected with a screw rod, and the screw rod is fixedly connected with the push rod. A threaded groove is formed in the push rod, the push rod is in threaded connection with the threaded rod through the threaded groove, an oil storage chamber is arranged in the push rod, and an oil injection hole is formed in the push rod. In the using process, self-lubrication can be achieved, the shell does not need to be disassembled for adding lubricating oil, using convenience is improved, meanwhile, the situation that the using precision of equipment is affected by frequent disassembly and assembly can be avoided, after the push rod moves in place, the switch is squeezed, the switch transmits information to the controller, a designated lamp on the controller is turned on, and the switch is switched on. And a user can conveniently judge whether the electric push rod moves in place or not, and the overall practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electric push rods, in particular to a pen-type electric push rod with a built-in feedback signal. Background Art

[0002] Electric push rod, also known as linear drive, is a new type of linear actuator mainly composed of a reduction motor push rod and control device. It can be considered as a structural extension of the rotary reduction motor. It is an electric drive device that converts the rotational motion of the motor into the linear reciprocating motion of the push rod.

[0003] After searching, a new type of ultra-quiet pen-type electric push rod with announcement number CN215419916U is disclosed. The new type of ultra-quiet pen-type electric push rod comprises: an electric push rod body, a silencer mechanism, a temperature measuring mechanism and a cooling mechanism; wherein the silencer mechanism is suitable for being mounted on the driving part of the electric push rod body, and the temperature measuring mechanism and the cooling mechanism are fixed on the silencer mechanism, that is, the silencer mechanism is suitable for eliminating the noise generated when the driving part of the electric push rod body is working; the temperature measuring mechanism is suitable for collecting temperature data of the silencer mechanism and displaying the temperature data; and the cooling mechanism is suitable for cooling the silencer mechanism; the utility model can reduce the noise generated when the pen-type electric push rod is working by installing the silencer mechanism on the driving part of the electric push rod body, and detects the temperature data of the silencer mechanism by the temperature measuring mechanism, and cools the silencer mechanism by timely opening the cooling mechanism to ensure the noise reduction and cooling effect of the silencer mechanism on the electric push rod body, thereby realizing silent operation of the pen-type electric push rod.

[0004] In response to the above-mentioned related technologies, the inventor believes that existing electric linear actuators require regular lubrication between the screw and the thread groove during use. However, since the screw is located inside the actuator, if lubrication is required, it must be removed and lubricated before installation. This step is cumbersome, and frequent removal and installation will affect the accuracy of the equipment. In addition, existing electric linear actuators are not equipped with corresponding feedback devices, which makes it impossible for users to determine whether the electric linear actuator is extended in place. To this end, we propose a pen-type electric linear actuator with a built-in feedback signal. Utility Model Content

[0005] In view of the above-mentioned problems existing in the existing pen-type electric push rod with built-in feedback signal, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a pen-type electric push rod with a built-in feedback signal, which solves the problem that the existing electric push rod needs to regularly lubricate the screw and the thread groove during use. However, since the screw is arranged inside the push rod, if it needs to be lubricated, it needs to be removed and lubricated before installation. This step is cumbersome, and frequent removal and installation will affect the accuracy of equipment use. In addition, the existing electric push rod is not equipped with a corresponding feedback device, which makes it impossible for users to judge whether the electric push rod is extended into place.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A pen-type electric push rod with a built-in feedback signal comprises a shell, a push rod and a protective shell, an outer wall of the shell is provided with a mounting groove, a reduction motor is installed in the mounting groove, an extending end of the reduction motor passes through the interior of the shell and is fixedly connected to a screw, a threaded groove is provided on the push rod, the push rod is threadedly connected to the screw through the threaded groove, an oil storage chamber is provided inside the push rod, an oil filling hole is provided on the push rod, the oil filling hole is communicated with the oil storage chamber, a connecting hole is provided between the threaded groove of the push rod and the oil storage chamber, a ball is rollingly connected in the connecting hole, one end of the ball is communicated with the threaded groove, and the other end of the ball is communicated with the oil storage chamber, a limiting groove is provided on the inner wall of the shell, and the outer wall of the push rod A limit block is provided on the wall, and the push rod is engaged with the limit groove through the limit block. A controller is installed on the outer wall of the shell, and an indicator light is provided on the controller. A switch is provided on the outer wall of the limit groove on one side near the shell outlet. The switch and the controller are connected by wires. The threaded connection between the screw and the push rod can achieve self-lubrication during the movement of the push rod, without the need to remove and add lubricating oil, which not only improves the convenience of use, but also avoids frequent disassembly and assembly that affects the accuracy of equipment use. After the push rod moves into place, the switch will be squeezed, and the switch will transmit information to the controller. The designated light on the controller will light up, making it easy for users to judge whether the electric push rod has moved into place.

[0009] Preferably, there are multiple balls, and the balls are symmetrically arranged at both ends of the thread groove.

[0010] Preferably, a slot is provided on the inner wall of the mounting slot, a strip-shaped groove is provided on the inner wall of the slot, a fixing block is provided on the outer wall of the protective shell, the position of the fixing block corresponds to the slot, a placement slot is provided on the fixing block, a limiting mechanism is provided on the fixing block, the limiting mechanism includes a telescopic rod and a spring, one end of the telescopic rod is fixedly connected to the inner wall of the placement slot, the other end of the telescopic rod is fixedly connected to the connecting block, the other end of the connecting block is fixedly connected to the limiting rod, the other end of the limiting rod passes through the outside of the fixing block, and the position of the limiting rod corresponds to the strip groove.

[0011] Preferably, the spring is nested on the telescopic rod, and the spring is pressed between the inner wall of the placement groove and the outer wall of the connecting block.

[0012] Preferably, a guide rod is engaged with the protective shell, one end of the guide rod is located inside the strip groove, and the other end of the guide rod is located outside the protective shell.

[0013] Preferably, a stop block is provided on one end of the guide rod located inside the strip groove, and a pressure block is provided on one end of the guide rod located outside the protective shell.

[0014] Preferably, a guide groove is provided at the opening of the slot, the guide groove is inclined, and an arc block is provided on the limiting rod.

[0015] Preferably, the push rod and the outer wall of the protective shell are both provided with connecting heads, and the connecting heads are provided with connecting holes.

[0016] Preferably, a rubber sleeve is nested on the pressing block.

[0017] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0018] 1. During use, the present invention realizes the rotation of the ball during the movement of the push rod through the threaded connection between the screw and the push rod, so that the lubricating oil in the oil storage chamber can be applied to the screw to achieve a self-lubricating effect. There is no need to remove the shell to add lubricating oil, which not only improves the convenience of use, but also avoids frequent disassembly and assembly that affects the accuracy of equipment use. After the push rod moves into place, the switch will be squeezed, the switch will transmit information to the controller, and the designated light on the controller will light up, making it easy for users to judge whether the electric push rod has moved into place. The overall practicality is strong.

[0019] 2. The present invention facilitates installation and removal of the protective shell by providing a limiting mechanism, thereby facilitating maintenance of the internal reduction motor and avoiding the tedious process of fixing the protective shell with screws and removing multiple screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the push rod of the present utility model;

[0024] Figure 4 This is an enlarged structural diagram of point B of the present utility model;

[0025] Figure 5 This is an enlarged structural diagram of point A of the present utility model;

[0026] Figure 6 This is a schematic diagram of the protective shell structure of the present utility model;

[0027] Figure 7 This is a schematic structural diagram of the limiting mechanism of the present utility model.

[0028] Description of reference numerals:

[0029] 1. Housing; 2. Push rod; 3. Controller; 4. Mounting slot; 5. Reducer motor; 6. Screw; 7. Limiting slot; 8. Switch; 9. Oil storage chamber; 10. Limiting block; 11. Ball bearing; 12. Strip groove; 13. Guide rod; 14. Stop block; 15. Pressure block; 16. Guide groove; 17. Protective shell; 18. Fixed block; 19. Limiting mechanism; 20. Telescopic rod; 21. Connecting block; 22. Limiting rod; 23. Spring; 24. Connector. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The embodiment of the utility model discloses a pen-type electric push rod with a built-in feedback signal.

[0032] Example 1

[0033] The utility model provides Figure 1-7The pen-type electric push rod with built-in feedback signal shown in the figure includes a shell 1, a push rod 2 and a protective shell 17. The outer wall of the shell 1 is provided with a mounting groove 4, and a reduction motor 5 is installed in the mounting groove 4. The extension end of the reduction motor 5 passes through the interior of the shell 1 and is fixedly connected to a screw 6. A threaded groove is opened on the push rod 2, and the push rod 2 is threadedly connected to the screw 6 through the threaded groove. An oil storage chamber 9 is provided inside the push rod 2, and an oil filling hole is provided on the push rod 2. The oil filling hole is connected to the oil storage chamber 9, and there is a screw between the threaded groove of the push rod 2 and the oil storage chamber 9. A connecting hole, in which a ball 11 is rollingly connected, one end of the ball 11 is connected to the threaded groove, and the other end of the ball 11 is connected to the oil storage chamber 9. A limiting groove 7 is provided on the inner wall of the outer shell 1, and a limiting block 10 is provided on the outer wall of the push rod 2. The push rod 2 is engaged with the limiting groove 7 through the limiting block 10. A controller 3 is installed on the outer wall of the outer shell 1, and an indicator light is provided on the controller 3. A switch 8 is provided on the outer wall of the limiting groove 7 near the outlet of the outer shell 1, and the switch 8 and the controller 3 are connected by wires.

[0034] The utility model provides a pen-type electric push rod with a built-in feedback signal. The number of balls 11 is provided, and the multiple balls 11 are symmetrically arranged at both ends of the thread groove, so that the entire electric push rod can be guaranteed to have the balls 11 to provide lubrication effect no matter what angle it is used at.

[0035] Example 2

[0036] Based on the first embodiment, Figure 1-7 As shown, the utility model is a pen-type electric push rod with a built-in feedback signal, a slot is provided on the inner wall of the installation slot 4, a strip groove 12 is provided on the inner wall of the slot, a fixing block 18 is provided on the outer wall of the protective shell 17, the fixing block 18 corresponds to the position of the slot, a placement slot is provided on the fixing block 18, a limiting mechanism 19 is provided on the fixing block 18, the limiting mechanism 19 includes a telescopic rod 20 and a spring 23, one end of the telescopic rod 20 is fixedly connected to the inner wall of the placement slot, the other end of the telescopic rod 20 is fixedly connected to the connecting block 21, the other end of the connecting block 21 is fixedly connected to the limiting rod 22, the other end of the limiting rod 22 passes through the outside of the fixing block 18, the limiting rod 22 corresponds to the position of the strip groove 12, which can facilitate the installation and disassembly of the protective shell 17, thereby facilitating the maintenance of the internal reduction motor 5, avoiding the cumbersomeness of removing multiple screws due to fixing by screws.

[0037] The utility model is a pen-type electric push rod with a built-in feedback signal. The spring 23 is nested on the telescopic rod 20. The spring 23 is press-fitted between the inner wall of the placement groove and the outer wall of the connecting block 21. Through the elastic force of the spring 23, a certain thrust can be applied to the limit rod 22, so that the limit rod 22 can always maintain a clamping state with the strip groove 12, avoiding the two from separating during use and affecting the use effect.

[0038] The utility model is a pen-type electric push rod with a built-in feedback signal. A guide rod 13 is embedded in the protective shell 17. One end of the guide rod 13 is located inside the strip groove 12, and the other end of the guide rod 13 is located outside the protective shell 17. When the protective shell 17 needs to be removed, the limit rod 22 can be squeezed by squeezing the guide rod 13, thereby improving the convenience of operation.

[0039] The utility model provides a pen-type electric push rod with a built-in feedback signal. A stop block 14 is provided on one end of the guide rod 13 located inside the strip groove 12, and a pressure block 15 is provided on the other end of the guide rod 13 located outside the protective shell 17, which can provide a limiting effect on the guide rod 13 and prevent the guide rod 13 from falling off the shell 1.

[0040] Example 3

[0041] Based on the second embodiment, Figure 1-7 As shown, the utility model is a pen-type electric push rod with a built-in feedback signal. A guide groove 16 is provided at the opening of the slot. The guide groove 16 is inclined, and an arc block is provided on the limit rod 22, so that the limit rod 22 can be automatically compressed into the inside of the placement slot when it comes into contact with the guide groove 16.

[0042] The utility model provides a pen-type electric push rod with built-in feedback signal. The push rod 2 and the outer wall of the protective shell 17 are both provided with a connector 24, and the connector 24 is provided with a connecting hole, which can be easily connected to external equipment.

[0043] The utility model provides a pen-type electric push rod with a built-in feedback signal. A rubber sleeve is nested on the pressing block 15, so that the user's hand feels more comfortable when pressing the pressing block 15.

[0044] When in use, it is connected to external equipment through the connecting heads 24 and connecting holes at both ends. During use, the reduction motor 5 drives the screw 6 to rotate. Since the push rod 2 is threadedly connected to the screw 6 and is limited by the interlocking connection relationship between the limit block 10 and the limit groove 7, the push rod 2 can be driven to move. During the movement of the push rod 2, the ball 11 provided at its connecting hole will rotate under the action of the screw 6, and the rotation of the ball 11 will smear the lubricating oil inside the oil storage chamber 9 on the screw 6 to achieve the effect of self-lubrication. After the push rod 2 moves into place, the limit block 10 will squeeze the switch 8 inside the limit groove 7. When the switch 8 is squeezed, it will transmit information to the controller 3, and the indicator light on the controller 3 will light up to remind the user that the reduction When the high-speed motor 5 is being repaired, the pressure block 15 can be pressed to drive the stop block 14 to squeeze the limit rod 22, so that it is separated from the strip groove 12, and then the protective shell 17 can be removed. When installing the protective shell 17, it is only necessary to align the fixing block 18 with the slot and then insert it. During the insertion process, the limit rod 22 will contact the guide groove 16. Since there is an arc block on the limit rod 22 and the guide groove 16 is inclined, the limit rod 22 will be squeezed and enter the inside of the placement groove of the strip groove 12. After the fixing block 18 is moved into place, the limit rod 22 will move to the position of the strip groove 12. At this time, the limit rod 22 loses the influence of external force, so it will enter the inside of the strip groove 12 under the elastic action of the spring 23. At this point, the installation of the protective shell 17 is completed.

[0045] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pen-type electric push rod with built-in feedback signal, comprising a housing (1), a push rod (2) and a protective shell (17), characterized in that: The outer wall of the housing (1) is provided with a mounting groove (4), a reduction motor (5) is installed in the mounting groove (4), an extension end of the reduction motor (5) penetrates the interior of the housing (1) and is fixedly connected to a screw rod (6), a thread groove is provided on the push rod (2), the push rod (2) is threadedly connected to the screw rod (6) through the thread groove, an oil storage chamber (9) is provided inside the push rod (2), an oil injection hole is provided on the push rod (2), the oil injection hole is communicated with the oil storage chamber (9), a connecting hole is provided between the thread groove of the push rod (2) and the oil storage chamber (9), a ball (11) is rollingly connected in the connecting hole One end of the ball (11) is communicated with the threaded groove, and the other end of the ball (11) is communicated with the oil storage chamber (9). A limiting groove (7) is provided on the inner wall of the housing (1), and a limiting block (10) is provided on the outer wall of the push rod (2). The push rod (2) is engaged with the limiting groove (7) through the limiting block (10). A controller (3) is installed on the outer wall of the housing (1), and an indicator light is provided on the controller (3). A switch (8) is provided on the outer wall of the limiting groove (7) near the outlet of the housing (1). The switch (8) and the controller (3) are connected by wires.

2. The pen-type electric push rod with built-in feedback signal according to claim 1, characterized in that: There are multiple balls (11), and the balls (11) are symmetrically arranged at both ends of the thread groove.

3. The pen-type electric push rod with built-in feedback signal according to claim 1, characterized in that: A slot is provided on the inner wall of the installation slot, a strip groove (12) is provided on the inner wall of the slot, a fixing block (18) is provided on the outer wall of the protective shell (17), the position of the fixing block (18) corresponds to the position of the slot, the fixing block (18) is provided with a placement slot, the fixing block (18) is provided with a limiting mechanism (19), the limiting mechanism (19) comprises a telescopic rod (20) and a spring (23), one end of the telescopic rod (20) is fixedly connected to the inner wall of the placement slot, the other end of the telescopic rod (20) is fixedly connected to a connecting block (21), the other end of the connecting block (21) is fixedly connected to a limiting rod (22), the other end of the limiting rod (22) passes through the outside of the fixing block (18), and the position of the limiting rod (22) corresponds to the position of the strip groove (12).

4. The pen-type electric push rod with built-in feedback signal according to claim 3, characterized in that: The spring (23) is nested on the telescopic rod (20), and the spring (23) is pressed between the inner wall of the placement groove and the outer wall of the connecting block (21).

5. The pen-type electric push rod with built-in feedback signal according to claim 3, characterized in that: A guide rod (13) is embedded in the protective shell (17), one end of the guide rod (13) is located inside the strip groove (12), and the other end of the guide rod (13) is located outside the protective shell (17).

6. The pen-type electric push rod with built-in feedback signal according to claim 5, characterized in that: A stopper (14) is provided on one end of the guide rod (13) located inside the strip groove (12), and a pressing block (15) is provided on one end of the guide rod (13) located outside the protective shell (17).

7. The pen-type electric push rod with built-in feedback signal according to claim 3, characterized in that: A guide groove (16) is provided at the opening of the slot, the guide groove (16) is arranged obliquely, and an arc block is provided on the limiting rod (22).

8. The pen-type electric push rod with built-in feedback signal according to claim 1, characterized in that: The push rod (2) and the outer wall of the protective shell (17) are both provided with a connecting head (24), and the connecting head (24) is provided with a connecting hole.

9. The pen-type electric push rod with built-in feedback signal according to claim 6, characterized in that: A rubber sleeve is nested on the pressing block (15).

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