CN201656667U - Linear reciprocating electric mechanism - Google Patents

Abstract

The utility model relates to a reciprocal electric mechanism of straight line, it includes a main part, a push rod, a spiro union component, an elongated screw rod and a motor. The main body is provided with a space along the longitudinal direction; the push rod is provided with a combining end, is in a hollow tubular shape and is provided with a plurality of through holes; the bolt joint member integrally coats the joint end of the push rod, and is plastic and integrally formed with: the connecting structure comprises an internal thread part, an external joint part and a plurality of fixing parts for connecting the internal thread part and the external joint part; the fixing parts are corresponding to and penetrate through the through holes; the outer joint part is embedded into the space and moves along the longitudinal direction of the main body; the long screw rod is externally provided with an internal thread part which is screwed to the screw connection component; the motor is butted with the long screw to drive the long screw to rotate; the push rod is acted by the screw component and the long screw rod at the same time to reciprocate in the space of the main body.

Description

Linear reciprocating electric mechanism

technical field

The utility model relates to a linear reciprocating electric mechanism, in particular to a linear reciprocating electric mechanism with high precision and noise.

Background technique

The electric cylinder is a linear reciprocating motion that converts the rotational motion of the motor into a push rod through mechanical transmission, and then realizes the precise control of thrust, speed and position. It has been widely used in the industry, such as logistics transmission, automatic production machines, experiments Equipment or people's livelihood electrical appliances and so on.

Please refer to Fig. 1, in the reciprocating motion of the existing known electric cylinder 10, a motor shaft 12 is socketed to an anti-rotation nut 16 of a push rod 14 in the body 18, therefore, its anti-rotation nut 16 is also responsible for the functions of screw pushing and anti-rotation. It is made of bronze material covered with plastic material. Generally, lubricating oil is used to reduce friction with other rigid metal materials; however, considering the electric cylinder 10 If it is used as an automatic production machine, the temperature and humidity of its working environment all have considerable tests for the components and materials of the electric cylinder 10. For example, the lubricating oil is easy to volatilize, causing the anti-rotation nut 16 and the electric cylinder 10 The increased frictional force between the motor shafts 12 not only easily causes abrasion, but also easily generates noise.

Furthermore, the bronze material is still a rigid metal. If the design between the anti-rotation nut 16 and the motor shaft 12 is not precisely matched, or the wear and deformation caused by reciprocating motion will not only worsen the friction loss and annoying noise again , Incomplete power transmission caused by inaccurate precision also greatly reduces the overall efficiency of the electric cylinder 10 .

This shows that above-mentioned existing electric cylinder obviously still has inconvenience and defect in structure and use, and urgently needs to be further improved. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a new type of linear reciprocating electric mechanism is one of the current important research and development topics, and it has also become a goal that the industry needs to improve.

Contents of the invention

The main purpose of the present utility model is to provide a linear reciprocating electric mechanism, which at least has the effects of low loss, quietness, high precision and high efficiency.

The purpose of this utility model and the solution to its technical problems are achieved by adopting the following technical solutions. A linear reciprocating electric mechanism proposed according to the utility model includes: a main body, which is provided with a space along the longitudinal direction and an opening at at least one end; the space has a predetermined configuration, and the space communicates with the opening; a push rod , has an action end and a coupling end, the configuration of the coupling end is hollow tubular, and the coupling end is provided with a plurality of perforations; a threaded member integrally covers the coupling end of the push rod, and according to the configuration of the coupling end It is hollow tubular; the screw member is plastic and integrally formed with: an internal thread part, an external joint part and a plurality of fixed parts connecting the internal thread part and the external joint part; wherein, the fixed parts correspond to and These perforations are pierced to ensure that the threaded member is closely connected with the push rod; the outer joint part fits into the space and moves longitudinally along the main body; a long screw rod has threads on the outside, corresponding and screwed to the The internal thread part of the threaded member is provided with a bearing at one end; and a motor is connected with the end of the elongated screw with the bearing through a coupling; wherein, the space of the main body accommodates at least the elongated screw, The threaded member and part of the push rod.

The purpose of the utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

The aforementioned linear reciprocating electric mechanism further has at least two positioning sensors in the main body, which are respectively arranged at two ends of a reciprocating stroke formed by the screwed member.

In the aforementioned linear reciprocating electric mechanism, the motor is at least a servo motor or a stepping motor.

In the aforementioned linear reciprocating electric mechanism, the space of the main body further accommodates the motor.

The aforementioned linear reciprocating electric mechanism further has a connecting frame connecting the main body and the motor so as to have a consistent appearance.

The aforementioned linear reciprocating electric mechanism further has a positioning ring disposed on the opening of the main body.

The aforesaid linear reciprocating electric mechanism further has a dust-proof sheet disposed on the opening of the main body.

The aforementioned linear reciprocating electric mechanism, wherein the main body further has a plurality of longitudinal sliding grooves recessed along the inner wall; the outer joint part is ring-shaped with a plurality of ribs, which fit into the sliding grooves and move longitudinally along the main body .

Compared with the prior art, the utility model has obvious advantages and beneficial effects. By virtue of the above technical solution, the linear reciprocating electric mechanism of the utility model has at least the following advantages and beneficial effects: the utility model has the effects of low loss, quietness, high precision and high efficiency.

To sum up, the linear reciprocating electric mechanism of the present invention includes a main body, a push rod, a threaded member, a long screw and a motor. The main body is provided with a space in the longitudinal direction; the push rod has a joint end, which is hollow tubular, and is provided with a plurality of perforations; the screw member integrally covers the joint end of the push rod, which is plastic and integrally formed: An internal thread part, an external joint part and a plurality of fastening parts connecting the internal thread part and the external joint part; the fastening parts correspond to and pass through the perforations; the external joint part fits into the space and Move longitudinally along the main body; the elongated screw rod has a thread screwed to the internal thread part of the screwed member; the motor is connected with the elongated screw rod to drive the elongated screw rod to rotate; the push rod is simultaneously supported by the screwed member Acting on the elongated screw, it reciprocates in the space of the main body. The utility model has remarkable progress in technology, and has obvious positive effects, and is a novel, progressive and practical new design.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 is a perspective view of an existing conventional electric cylinder.

Fig. 2 is a cross-sectional view of the linear reciprocating electric mechanism of the present invention in an extended state.

Fig. 3 is a cross-sectional view of the linear reciprocating electric mechanism of the present invention in a storage state.

Fig. 4 is a sectional view of the push rod and the screwed member of the utility model.

Fig. 5 is a partial cross-sectional view of the push rod and the screwed member of the utility model.

Fig. 6 is an exploded perspective view of the linear reciprocating electric mechanism of the present invention.

Fig. 7 is an exploded perspective view of another embodiment of the linear reciprocating electric mechanism of the present invention.

Fig. 8 is a combined exploded view of the linear reciprocating electric mechanism of the present invention.

10: electric 14: push rod

18: Ontology

20: Linear reciprocating electric mechanism 32: Space

36: Opening 42: Action end 42

46: Perforation 52: Internal thread

56: Fixed part 60: Long screw

12: Motor shaft 16: Anti-rotation nut

30: Main body 34: Chute

40: Push rod 44: Joint end

50: Screwed component 54: External joint

58: Rib 62: Thread 62

64: terminal 70: motor

80: Positioning sensor 92: Positioning ring

66: Bearing 72: Coupling

90: Connection frame 94: Dust-proof sheet

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the invention, the specific implementation, structure, characteristics and features of the linear reciprocating electric mechanism proposed according to the utility model will be described below in conjunction with the accompanying drawings and preferred embodiments. Its effect is described in detail below.

The aforementioned and other technical contents, features and effects of the present utility model will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation mode, the technical means and effects of the utility model to achieve the predetermined purpose can be understood more deeply and specifically, but the attached drawings are only for reference and description, and are not used to explain the utility model. new restrictions.

Please refer to FIG. 2 , the utility model discloses a linear reciprocating electric mechanism 20 , which includes a main body 30 , a push rod 40 , a threaded member 50 , a long screw 60 and a motor 70 .

The main body 30 is provided with a space 32 along the longitudinal direction, a plurality of longitudinal slide grooves 34 are recessed along the inner wall, and an opening 36 at at least one end; the slide grooves 34 communicate with the space 32, and the space 32 communicates with the opening 36 .

Also referring to FIG. 4 , the push rod 40 has an active end 42 and a joint end 44 , the joint end 44 is hollow tubular, and the joint end 44 is provided with a plurality of through holes 46 .

Referring again to Fig. 5, the threaded member 50 is integrally covered with the joint end 44 of the push rod 40 by plastic material, and is hollow tubular according to the configuration of the joint end 44; the threaded member 50 is plastic and integrally formed There are: an internal thread portion 52 , an external joint portion 54 and a plurality of fastening portions 56 connecting the internal thread portion 52 and the external joint portion 54 .

Wherein, the fastening portions 56 are correspondingly pierced and fill up the through holes 46 , so as to ensure the tight connection between the threaded member 50 and the push rod 40 .

Please refer to Fig. 6, the first embodiment of the outer joint 54 is generally a rectangle with chamfers, and the cross section of the opening 36 of the main body 30 also corresponds to the outer joint 54, so that the screw connection The component 50 can be fitted into the spaces 32 of the main body 30 through the outer joint portion 54 and move longitudinally along the main body 30 .

Please refer to FIG. 7 . In the second embodiment of the outer engaging portion 54 , a plurality of ribs 58 are formed around the outer joint portion 54 , which are fitted into the slide grooves 34 of the main body 30 and move longitudinally along the main body 30 .

Referring again to FIG. 2 , the elongated screw 60 has external threads 62 corresponding to and screwed to the internal thread portion 52 of the threaded member 50 . The elongated screw 60 has an end 64 with a bearing 66 sheathed therein.

As shown in FIG. 2 , the motor 70 is connected to the end 64 of the elongated screw 60 through a coupling 72 ; wherein, the motor 70 can be at least a servo motor or a stepping motor.

The space 32 of the main body 30 of the utility model disclosed in FIG. 2 at least accommodates the elongated screw 60 , the threaded member 50 and part of the push rod 40 ; the motor 70 has a rotational kinetic energy and drives the elongated screw 60 to rotate The elongated screw 60 is screwed to the screw member 50, so the screw member 50 can move longitudinally along the elongated screw 60 through the threads; again, the screw member 50 is integrally formed to cover the push The joint end 44 of the rod 40; therefore, referring to Fig. 3 at the same time, the push rod 40 is simultaneously affected by the threaded member 50 and the elongated screw 60, and can reciprocate in the space 32 of the main body 30, the reciprocating motion The stroke corresponds to the length of the elongated screw 60 .

Compared with the conventional anti-rotation nut 16 made of bronze, since the threaded member 50 is made of plastic material, the internal thread portion 52 can elastically deform and fit closely with the elongated screw 60 without gaps, which can effectively The kinetic energy of the motor 70 is transmitted efficiently, and the working accuracy and efficiency of the push rod 40 are improved. Also, since the threaded member 50 can be tightly fitted to the elongated screw 60 without gaps, wear between the threaded member 50 and the elongated screw 60 can be avoided, which can effectively reduce wear, prolong the service life, and achieve a A truly silent effect.

Referring again to Fig. 5, the internal thread portion 52 can be longer than the external joint portion 54, increasing the bonding area between the internal thread portion 52 and the elongated screw 60 can also increase the screw connection strength to achieve higher efficiency. kinetic energy transfer.

Wherein, the through-holes 46 of the push rod 40 can have different configurations, the main purpose of which is to enable the threaded member 50 to cover the coupling end 44 firmly. Therefore, the through-holes 46 are at least symmetrically disposed on opposite sides of the joint end 44 ; or, the through-holes 46 are annularly disposed along the joint end 44 .

Referring again to FIG. 2, the linear reciprocating electric mechanism 20 has at least two positioning sensors 80 in the main body 30, which are respectively arranged at the two ends of the reciprocating stroke formed by the screwed member 50. The two positioning sensors 80 act as The feedback signal is used for the motor 70 .

Referring to FIG. 8 at the same time, the linear reciprocating electric mechanism 20 further has a connecting frame 90 for connecting the main body 30 and the motor 70 so as to have a consistent appearance.

Referring again to FIG. 2, the linear reciprocating electric mechanism 20 further has a positioning ring 92, which is arranged on the opening 36 of the main body 30, and serves as a stop to position the threaded member 50 to prevent the threaded member 50 from detaching from the main body 30. .

Referring back to Figures 2 and 8, the linear reciprocating motor mechanism 20 further has a dustproof sheet 94 disposed on the opening 36 of the main body 30. In this embodiment, it is disposed on the positioning ring 92 for dustproof and antifouling purposes. Avoid unnecessary interference and damage.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those skilled in the art can use the technical content disclosed above to make some changes or modify them into equivalent embodiments without departing from the technical solution of the present utility model. Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (8)

1. linear oscillating motor structure is characterized in that it comprises:

One main body, the opening that it is provided with a space and is positioned at least one end longitudinally; This space has a predetermined configuration, this space and this open communication;

One push rod has an effect end and a binding end, and the configuration of this binding end is hollow tubular, and this binding end is provided with a plurality of perforation;

One member that is spirally connected, one coats the binding end of this push rod, and is hollow tubular according to the configuration of this binding end; This member that is spirally connected is plasticity and one-body moldedly has: an internal thread part, an outer engagement portion and connect this internal thread part and a plurality of Fixed Divisions of outer engagement portion; Wherein, these Fixed Divisions are corresponding and wear these perforation, closely are connected with this push rod to guarantee this member that is spirally connected; This outer engagement portion down is bonded in this space and along this main body and vertically moves;

One elongated screw rod has screw thread outward, and is corresponding and be threaded into this internal thread part of the member that is spirally connected, and the one end is arranged with a bearing; And

One motor docks with this end that this elongated screw rod is provided with bearing by a shaft joint;

Wherein, the space of this main body holds this push rod of this elongated screw rod, this be spirally connected member and part at least.

2. linear oscillating motor structure according to claim 1 is characterized in that it more has at least two positioning inductors in this main body, and it is located at the two-end-point that this member that is spirally connected forms a reciprocating stroke respectively.

3. linear oscillating motor structure according to claim 1 is characterized in that wherein said motor is at least servo motor or stepper motor.

4. linear oscillating motor structure according to claim 1 is characterized in that the space of wherein said main body more holds this motor.

5. linear oscillating motor structure according to claim 1 is characterized in that it has more a connection box, connects this main body and this motor, makes to be consistent outward appearance.

6. linear oscillating motor structure according to claim 1 is characterized in that it has more a locating ring, is located at the opening of this main body.

7. linear oscillating motor structure according to claim 1 is characterized in that it has more a dustproof sheet, is located at the opening of this main body.

8. linear oscillating motor structure according to claim 1 is characterized in that wherein said main body has more along inwall to be concaved with a plurality of vertical chutes; This outer engagement portion is equipped with a plurality of ribs, and down is bonded in these chutes and along this main body and vertically moves.

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