CN220527800U

CN220527800U - Push rod

Info

Publication number: CN220527800U
Application number: CN202321786155.3U
Authority: CN
Inventors: 郭李滨; 周幼斌; 叶群
Original assignee: Shengzhou Caige Electromechanical Technology Co ltd
Current assignee: Shengzhou Caige Electromechanical Technology Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-02-23
Anticipated expiration: 2033-07-10

Abstract

The utility model discloses a push rod, which comprises a motor, a screw rod, a screw nut, an induction piece, a circuit board, an inner rod and an outer tube, wherein the screw rod is arranged on the motor; the motor is connected with the lead screw linkage, and the screw is assembled on the lead screw, and the screw is connected with the interior pole, and outer tube cover is outside interior pole, and the response piece is connected with screw or interior pole, and the circuit board is installed in the outer tube, and response piece and circuit board move contact, and the circuit board is connected with the motor electricity. The push rod has the characteristics of small volume and suitability for installation on small-sized machinery.

Description

Push rod

Technical Field

The utility model relates to the field of machinery, in particular to a push rod.

Background

The push rod is used for driving the object to make linear reciprocating motion. The push rod motor with the rotary motion being converted into linear reciprocating motion is disclosed in the prior application number 201621120855.9, wherein a travel switch matched with a nut is arranged on the inner wall of the outer tube, and a travel switch signal is output to the motor. When the nut moves inwards under the action of the screw rod, the travel switch is arranged, so that the nut moves inwards to a certain extent to trigger the travel switch, and at the moment, the travel switch outputs control information to control the motor to stop running, so that the nut and the screw rod are well protected in threaded connection. Therefore, the device is movably positioned through the travel switch, and the travel switch is arranged to increase the space inside the outer tube, so that the whole push rod motor has larger volume, and the device is not suitable for being installed on some small toys.

In view of the above, the present utility model provides a push rod, which is produced by the present utility model.

Disclosure of Invention

The utility model provides a push rod, which has the characteristics of small volume and suitability for installation on small-sized machinery; specifically, the utility model is realized by the following technical scheme:

a push rod comprises a motor, a screw rod, a screw nut, an induction piece, a circuit board, an inner rod and an outer tube; the motor is connected with the lead screw linkage, and the screw is assembled on the lead screw, and the screw is connected with the interior pole, and outer tube cover is outside interior pole, and the response piece is connected with screw or interior pole, and the circuit board is installed in the outer tube, and response piece and circuit board move contact, and the circuit board is connected with the motor electricity.

Further, an induction circuit is arranged in the circuit board, the induction circuit is arranged along the length direction of the outer pipe channel, the induction sheet is in movable contact with the induction circuit, and the two ends of the induction circuit are stroke stop areas; when the sensing piece moves to be in contact with the stroke stopping area, the motor stops rotating.

Further, the circuit in the circuit board comprises two electrode terminals, namely a D electrode terminal and an E electrode terminal; the induction circuit comprises a first induction circuit and a second induction circuit; the electrode D is connected with the motor, the other end of the motor is connected with one end of a first induction circuit, a second induction circuit is parallel to the first induction circuit, the second induction circuit comprises an A circuit, a B circuit and a C circuit which are mutually separated, one end of the A circuit is connected with the positive electrode of a second diode, the negative electrode of the second diode is connected with the positive electrode of a first diode, the negative electrode of the first diode is connected with one end of the C circuit, and the B circuit is connected with the electrode E; the sensing piece is respectively contacted with the first sensing circuit and the second sensing circuit.

Further, the end part of the screw rod is sleeved with a bearing.

Further, the sensing piece is made of conductive material and has elasticity.

Further, a groove is arranged on the outer surface of the screw nut, the induction piece is arranged in the groove,

further, the motor is assembled in the motor casing cavity, and the motor casing is connected with the outer tube, and the outer tube channel is communicated with the motor casing cavity.

Further, the external surface of the screw is provided with external threads, the inner rod is provided with a channel, one end of the channel is provided with internal threads, and the internal threads of the inner rod are matched with the external threads of the screw.

Further, a groove is provided on the inner wall of the outer tube passage along the length direction of the passage for mounting the circuit board.

Drawings

FIG. 1 is an exploded view of one embodiment of a putter in accordance with the present utility model;

FIG. 2 is a schematic illustration of a push rod extension of one embodiment of the push rod provided by the present utility model;

FIG. 3 is a cross-sectional view in the H-H direction of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic illustration of a putter retraction of one embodiment of a putter in accordance with the present utility model;

FIG. 6 is a cross-sectional view in the I-I direction of FIG. 5;

FIG. 7 is an enlarged view of a portion of FIG. 6;

FIG. 8 is a schematic diagram of a circuit board according to the present utility model;

FIG. 9 is a schematic circuit diagram of the push rod in the retracted state according to the present utility model;

fig. 10 is a schematic circuit diagram of the push rod in the extended state according to the present utility model.

Wherein: 1. a motor; 2. a screw rod; 3. a nut; 31. a groove; 4. an induction piece; 5. an inner rod; 6. an outer tube; 7. a circuit board; 71. a first sensing circuit; 72. a second inductive circuit; 73. a diode number one; 74. a second diode; 8. a motor housing; 9. a bearing; 10. pulling the cap.

Detailed Description

Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

In the following description, for the purposes of explanation of various inventive embodiments, certain specific details are set forth in order to provide a thorough understanding of the various inventive embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details. In other instances, well-known devices, structures, and techniques associated with the present disclosure may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and variations such as "comprises" and "comprising" will be understood to be open-ended, meaning of inclusion, i.e. to be interpreted to mean "including, but not limited to.

Reference throughout this specification to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the terms first, second and the like in the description and in the claims, are used for descriptive purposes only and not for limiting the size or other order of the objects described.

As shown in fig. 1, a push rod comprises a motor 1, a screw rod 2, a screw nut 3, an induction piece 4, an inner rod 5, an outer tube 6 and a circuit board 7.

As shown in fig. 3, 4, 6 and 7, the motor 1 is connected with the screw rod 2 in a linkage way, the screw rod 2 is provided with the screw nut 3, the screw nut 3 is provided with the induction piece 4, and meanwhile, the screw nut 3 is connected with the inner rod 5 through threads. The outer tube 6 is sleeved outside the inner rod 5, the inner rod 5 can stretch out and draw back relative to the outer tube 6 along linear movement in the outer tube 6 channel, the circuit board 7 is installed in the outer tube 6 channel, the induction piece 4 is in contact with the circuit board 7, the circuit board 7 is connected with the motor 1, the nut 3 drives the induction piece 4 to move relative to the circuit board 7, and therefore the induction piece 4 can be in contact communication with different areas of the circuit board 7, and accordingly forward rotation, overturning and stopping functions of the motor 1 are achieved.

As shown in fig. 1, a motor casing 8 is arranged outside the motor 1, the motor casing 8 is connected with the outer tube 6, and the screw rod 2 is also arranged in the passage of the outer tube 6. The motor 1 housing is formed by two flaps.

A bearing 9 is arranged in the motor shell 8, one end of the screw rod 2 is assembled in the bearing 9, and the screw rod 2 is connected with the motor 1 in a linkage way.

As shown in fig. 1, a groove 31 is provided on the outer surface of one of the segments of the nut 3, and the sensing piece 4 is mounted in the groove 31, and the sensing piece 4 is made of a conductive material. And the sensing piece 4 must always contact with the circuit board 7, so the sensing piece 4 has a certain elasticity, and thus clings to the circuit board 7.

As shown in fig. 3, 4, 6 and 7, an external thread is arranged on the outer surface of the other section of the screw nut 3, a channel is arranged in the inner rod 5, an internal thread is arranged at one end of the channel, and the internal thread of the inner rod 5 is matched with the external thread of the screw nut 3 to realize the connection of the two. An internal thread is arranged at the other end of the passage of the inner rod 5, an external thread is arranged at the end part of the pulling cap 10, and the internal thread of the inner rod 5 is matched with the external thread of the pulling cap 10 to realize the connection of the two.

As shown in fig. 3, 4, 6 and 7, a channel is arranged in the outer tube 6, the outer tube 6 is sleeved outside the inner rod 5, one end of the outer tube 6 is connected with one end of the motor casing 8, and the channel of the outer tube 6 is communicated with the inner cavity of the motor casing 8. The outer tube 6 passageway is connected with the screw 3 circumference for the screw 3 only can be in the outer tube 6 passageway along passageway length direction removal, and the screw 3 can't rotate relative outer tube 6, and specific circumference connected mode is: as shown in fig. 1, the radial cross section of the passage of the outer tube 6 is non-circular, for example, the non-circular can be rectangular, and the radial cross section of the nut 3 is non-circular, for example, the non-circular can be rectangular, so that the nut 3 is assembled in the passage of the outer tube 6, and the nut 3 is driven to move along the length direction of the passage along with the rotation of the screw rod 2.

As shown in fig. 3, 4, 6 and 7, the circuit board 7 is flexible and long, an induction circuit is arranged inside the circuit board 7 along the length direction, a groove is arranged on the inner wall of the outer tube 6 channel along the length direction of the channel, the circuit board 7 is arranged in the groove, the induction circuit is arranged along the length direction of the outer tube 6 channel, the induction sheet 4 is contacted with the induction circuit of the circuit, the induction sheet 4 moves on the induction circuit along with the movement of the nut 3 in the outer tube 6 channel, and different circuits are conducted through the induction circuits of different areas contacted with the induction sheet 4, so that the start and stop of the motor 1 are realized.

As shown in fig. 8, the circuit in the circuit board 7 includes two electrode terminals, namely a D electrode terminal and an E electrode terminal, wherein the D electrode terminal is connected with the motor 1, the other end of the motor 1 is connected with one end of the first induction circuit 71, the second induction circuit 72 is parallel to the first induction circuit 71, the second induction circuit 72 includes three sections of circuits separated in sequence, namely an a circuit, a B circuit and a C circuit, the a circuit is close to one end of the outer tube 6 connected with the motor 1, one end of the a circuit is connected with the positive electrode of the second diode G, the negative electrode of the second diode G is connected with the positive electrode of the first diode F, the negative electrode of the first diode F is connected with one end of the C circuit, the B circuit is located between the a circuit and the C circuit, and both ends of the B circuit are disconnected with the A, C circuit, and the B circuit is connected with the E electrode terminal; the sensing piece 4 spans the first sensing circuit 71 and the second sensing circuit 72, the sensing piece 4 contacts the first sensing circuit 71 and the second sensing circuit 72 respectively, and the first sensing circuit 71 is communicated with the second sensing circuit 72 through the sensing piece 4. Along with the nut driving the inner rod 5 to linearly move in the outer tube 6 to realize the expansion and contraction of the inner rod 5, the induction piece 4 moves on the induction line to conduct different area sections on the second induction line 72, and the specific operation process of the induction piece 4 is as follows:

the push rod extends out: as shown in fig. 5, 6 and 7, in the initial state, the push rod is in the shortest state, the inner rod 5 is retracted inside the outer tube 6, as shown in fig. 9, the induction piece 4 is in contact with the line a of the second induction line 72, the electrode D is communicated with the positive electrode of the power supply, the electrode E is communicated with the negative electrode of the power supply, the diode G is positively conducted, the motor 1 is positively rotated, and finally the screw nut 3 is driven to move outwards, so that the induction piece 4 is driven to move outwards; the induction piece 4 slides into the line B, the motor 1 is still in forward conduction, the motor continues to rotate forward, and the inner rod 5 continues to move outwards; until the induction piece 4 slides into the C line, under the reverse cut-off action of the first diode F, the circuit is broken, the motor 1 has no current, the work stops, the inner rod 5 stops moving outwards, and the push rod is in the longest state.

The push rod retracting process: as shown in fig. 2, 3 and 4, in the initial state, the push rod is in the longest state, the inner rod 5 extends out of the outer tube 6, as shown in fig. 10, the induction piece 4 contacts with the C line of the second induction line 72, the D electrode end is communicated with the negative electrode of the power supply, the E electrode end is communicated with the positive electrode of the power supply, the first diode F is conducted in the forward direction, the motor 1 is conducted in the reverse direction, the motor 1 is reversed, and finally the nut 3 is driven to move inwards, so that the induction piece 4 is driven to move inwards; the induction piece 4 slides into the line B, the motor 1 is still reversely conducted, the reverse rotation is continued, and the inner rod 5 is continued to move inwards; until the induction piece 4 slides into the line A, under the reverse cut-off action of the diode G, the circuit is broken, the motor 1 does not have current, the work stops, the inner rod 5 stops moving inwards, and the push rod is in the shortest state.

As can be seen from the above description, the sensing piece 4 cooperates with the circuit board 7 to realize the movement limiting function of the inner rod 5, and limit the movement path of the inner rod 5. The installation of a travel switch is omitted, so that the whole structure of the push rod is simpler and smaller.

The description of the present utility model is not particularly limited, but is conventional in the art.

The foregoing is a preferred embodiment of the present utility model, and several other simple substitutions and modifications made under the circumstances of the inventive concept should be considered as falling within the scope of the present utility model.

Claims

1. A push rod, characterized by: the device comprises a motor, a screw rod, a screw nut, an induction piece, a circuit board, an inner rod and an outer tube; the motor is connected with the lead screw linkage, and the screw is assembled on the lead screw, and the screw is connected with the interior pole, and outer tube cover is outside interior pole, and the response piece is connected with screw or interior pole, and the circuit board is installed in the outer tube, and response piece and circuit board move contact, and the circuit board is connected with the motor electricity.

2. A putter as set forth in claim 1 wherein: an induction circuit is arranged in the circuit board, the induction circuit is arranged along the length direction of the outer pipe channel, the induction sheet is in movable contact with the induction circuit, and the two ends of the induction circuit are stroke stop areas; when the sensing piece moves to be in contact with the stroke stopping area, the motor stops rotating.

3. A putter as in claim 2 wherein: the circuit in the circuit board comprises two electrode terminals, namely a D electrode terminal and an E electrode terminal; the induction circuit comprises a first induction circuit and a second induction circuit; the electrode D is connected with the motor, the other end of the motor is connected with one end of a first induction circuit, a second induction circuit is parallel to the first induction circuit, the second induction circuit comprises an A circuit, a B circuit and a C circuit which are mutually separated, one end of the A circuit is connected with the positive electrode of a second diode, the negative electrode of the second diode is connected with the positive electrode of a first diode, the negative electrode of the first diode is connected with one end of the C circuit, and the B circuit is connected with the electrode E; the sensing piece is respectively contacted with the first sensing circuit and the second sensing circuit.

4. A putter as claimed in claim 1 or claim 2 wherein: the end of the screw rod is sleeved with a bearing.

5. A putter as claimed in claim 1 or claim 2 wherein: the sensing piece is made of conductive materials and has elasticity.

6. A putter as set forth in claim 5 wherein: the outer surface of the nut is provided with a groove, and the induction piece is arranged in the groove.

7. A putter as claimed in claim 1 or claim 2 wherein: the motor is assembled in the motor casing cavity, and motor casing and outer tube connection, outer tube passageway and motor casing cavity intercommunication.

8. A putter as claimed in claim 1 or claim 2 wherein: the external surface of the nut is provided with external threads, the inner rod is provided with a channel, one end of the channel is provided with internal threads, and the internal threads of the inner rod are matched with the external threads of the nut.

9. A putter as claimed in claim 1 or claim 2 wherein: a groove is arranged on the inner wall of the outer tube channel along the length direction of the channel and is used for installing a circuit board.