CN208461612U - A kind of tail draws location structure and linear actuators - Google Patents

Abstract

The utility model discloses a kind of tails to draw location structure, belong to Linear transmission technical field, including tail drawing and shell, the tail pulls on the mounting groove being equipped with for fixing driven object body, the tail is drawn with cage connection and part is stretched out outside shell, it includes being embedded in section that the tail, which is drawn, embedding slot is equipped in the shell, the embedded section is rotatably installed in embedding slot, the peripheral side of the embedded section is equipped at least two positioning surfaces, one positioning column is installed on the shell, the positioning column is packed into outside shell and is extending at least partially into the embedding slot, the side of the positioning column is bonded matching with the positioning surface, it is circumferentially rotated with limiting the tail drawing.The invention also discloses a kind of linear actuators.The utility model has the advantage of quickly can draw in capable commutation to tail.

Description

A kind of tail draws location structure and linear actuators

[technical field]

The utility model relates to a kind of tails to draw location structure, belong to Linear transmission technical field.

[background technique]

Linear actuators, also referred to as electric pushrod are widely used in furniture, Medical Devices, solar power generation etc. field, Primary structure includes driving motor, geared worm, worm gear, screw rod, nut, and working principle is that driving motor driving geared worm turns Dynamic, geared worm engages that worm gear is driven to rotate with worm gear, and worm gear rotation drives screw rod rotation, and screw rod rotation drives nut shaft To movement, nut is generally connected with inner tube, to realize the telescopic moving of inner tube.

It is connected in order to facilitate linear actuators with driven object body, linear actuators generally includes shell, and cage connection has One tail is drawn, and the tail in currently available technology is drawn, and usually includes a mounting groove, and mounting groove penetrates through a locking hole, driven object Body is installed in mounting groove and is assembled in tail by fastening member and pulls on.

Since the shape, structure of driven object body is very more, and it is orientation installation that driven object body, which is installed in mounting groove, , so as to cause Linear actuator when driving different driven object bodies, the circumferential direction that tail is drawn is to need to carry out centainly more It changes, shell is usually integrally dismantled, then rotates tail and draw certain angle by the method for the circumferential direction that existing replacement tail is drawn Afterwards, then shell reinstalls fixation, and such commutation method needs dismantle entire shell, very troublesome.

[utility model content]

A kind of tail drawing positioning is provided the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art Structure and linear actuators quickly can draw in row switching operation to tail.

Above-mentioned technical problem is solved, the utility model adopts the following technical solution:

A kind of tail drawing location structure, including tail is drawn and shell, the tail pulls on the peace being equipped with for fixing driven object body Tankage, the tail is drawn with cage connection and part is stretched out outside shell, and it includes being embedded in section that the tail, which is drawn, is equipped with and is embedded in the shell Slot, the embedded section are rotatably installed in embedding slot, and the peripheral side of the embedded section is equipped at least two positioning surfaces, the shell On a positioning column is installed, the positioning column is packed into outside shell and is extending at least partially into the embedding slot, described fixed The side of position column is bonded matching with the positioning surface, is circumferentially rotated with limiting the tail drawing.

Using the utility model has the beneficial effects that

In the utility model, the embedded section that the tail is drawn is rotatably installed in shell embedding slot, when being not provided with other When positioning element, tail drawing can be freely rotated in embedding slot；

In the utility model, it is mounted with a positioning column on the shell, while being embedded in the peripheral side setting at least two of section Positioning surface, one of positioning surface can carry out being bonded matching with positioning column, can using the cooperation of positioning column and positioning surface It is circumferentially rotated with preventing from being embedded in section, limits embedded section and circumferentially rotate, also just define that tail drawing circumferentially rotates, when need When drawing in row switching operation to tail, it is only necessary to detach positioning column out of embedding slot, position column and positioning surface not Fitting, tail drawing can be freely rotated, and protrude into positioning column in embedding slot after rotating predetermined angular, then again, so that positioning Column and another positioning surface cooperate, to complete switching operation.

For traditional tail draws switching operation, the utility model does not need integrally to dismantle shell, it is only necessary to grasp Make a positioning column, it is very convenient；It draws commutation not need dismounting shell additionally, due to tail, does not interfere with interior of shell Components, the assembly relation between components is more stable；Finally, the positioning method in the utility model, is by two in fact Positioning is contacted between a face, that is, the side of the positioning surface and positioning column that are embedded in section side is in contact, this side and side it Between contact the mode of positioning, locating effect is more stable, positions longer life expectancy, will not even if there is several places to wear between face and face Locating effect is caused to fail.

Preferably, the shell includes first shell and second shell, the positioning column is fastening screw, described tight Gu the threaded portion of screw is for first shell to be fixedly connected with second shell, the side of the fastening screw and the positioning surface Matching.

Preferably, the positioning surface is the cambered surface of indent.

Preferably, at least two positioning surface is circumferentially evenly distributed on the peripheral side of embedded section.

Preferably, the positioning surface includes orientation, under positioning column and positioning surface fit-state, positioning surface is determined Position direction is parallel with the positioning axial direction of column, and the orientation in adjacent positioned face intersects angle A, and the angle A is 20 ° ~180 °.

Preferably, being set on the peripheral side of the embedded section there are four positioning surface, the orientation between adjacent positioned face Angle of intersection is 90 °.

Preferably, the mounting groove is strip groove, is formed inside the strip groove and insert plane, in the positioning surface extremely Rare one orientation and inserting plane are perpendicular or parallel.

Preferably, the embedded section is limited in the axial direction in the embedding slot.

Preferably, the positioning column is positioning pin, the positioning pin inserting passes through fastener spiral-lock into shell On the shell.

In addition, the invention also discloses a kind of linear actuators, including driving motor, geared worm, worm gear, screw rod And nut, the linear actuators draw location structure using tail described in any one of the above scheme.

These features and advantages of the utility model will the detailed exposure in following specific embodiment, attached drawing.

[Detailed description of the invention]

The utility model is described further with reference to the accompanying drawing:

Fig. 1 is the schematic diagram of one linear actuators of the utility model embodiment；

Schematic diagram after Fig. 2 splits for first shell in one linear actuators of the utility model embodiment；

Fig. 3 is first shell in one linear actuators of the utility model embodiment, second shell, positioning column, tail drawing Perspective view of the explosion；

Fig. 4 is the front view that tail draws in axial direction in one linear actuators of the utility model embodiment.

[specific embodiment]

The technical solution of the utility model embodiment is explained below with reference to the attached drawing of the utility model embodiment and Illustrate, but following embodiments are only the preferred embodiment of the utility model, and not all.Based on the implementation example in the implementation mode, Those skilled in the art's obtained other embodiments without making creative work, belong to the utility model Protection scope.

In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or Positional relationship is to be based on the orientation or positional relationship shown in the drawings, description embodiment merely for convenience and simplified description, and It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, because This should not be understood as limiting the present invention.

Embodiment one

As shown in Figures 1 to 4, a kind of linear actuators of the present embodiment, the present embodiment linear actuator include driving electricity Machine 10, geared worm, worm gear 11, screw rod, nut, driving motor 10 connect geared worm, and geared worm drives worm gear 11 to rotate, The rotation of worm gear 11 drives screw rod rotation, and screw rod rotation drives nut axial movement, in addition, the present embodiment further includes shell 2, outer tube 12, inner tube 13, shell 2 are connect with outer tube 12, and the nut is connect with inner tube 13, and the axial movement of nut is eventually exhibited as inner tube Axially opposing displacement between 13 and outer tube 12.

Linear actuators in the present embodiment further includes that tail draws 3, and the tail draws 3 to be equipped with for fixing driven object body Mounting groove 31, the tail draws 3 to connect with shell 2 and part is stretched out outside shell 2, and it includes being embedded in section 301 that the tail, which draws 3, described outer Embedding slot 21 is equipped in shell 2, the embedded section 301 is rotatably installed in embedding slot 21, and the peripheral side of the embedded section 301 is equipped with At least two positioning surfaces 32 are equipped with a positioning column 4 on the shell 2, position column 4 and tail draws 3 composition tails to draw orientation knot Structure, the positioning column 4 are packed into outside shell 2 and are extending at least partially into the embedding slot 21, the side of the positioning column 4 It is bonded matching with the positioning surface 32, draws 3 to circumferentially rotate to limit the tail.Here 4 side of positioning column and positioning surface 32 Fitting matching refers in the tangential direction of peripheral side for being embedded in section 301, pastes between positioning surface 32 and positioning 4 side of column It closes length and is greater than 5mm.

It should be noted that the tail of the present embodiment linear actuator draws location structure, not only limitation is applied in this reality It applies in the linear linear actuators of example, can be applied on other linear actuators.

In the present embodiment, it is mounted with a positioning column 4 on shell 2, while being embedded in the peripheral side setting at least two of section 301 A positioning surface 32, one of positioning surface 32 can carry out being bonded matching with positioning column 4, utilize positioning column 4 and positioning surface 32 cooperation can prevent embedded section 301 from circumferentially rotating, limit embedded section 301 and circumferentially rotate, also just define Tail draws 3 to circumferentially rotate, when needing to draw 3 progress switching operation to tail, it is only necessary to detach positioning column 4 out of embedding slot 21 Coming, positions column 4 and positioning surface 32 is not bonded, tail drawing 3 can be freely rotated, after rotating predetermined angular, then again will positioning Column 4 protrudes into embedding slot 21, so that positioning column 4 and another positioning surface 32 cooperate, to complete switching operation.

For traditional tail draws 3 switching operations, the present embodiment does not need to dismantle 2 entirety of shell, it is only necessary to grasp Make a positioning column 4, it is very convenient；It draws 3 commutations not need dismounting shell 2 additionally, due to tail, does not interfere with shell 2 Internal components, the assembly relation between components are more stable；Finally, the positioning method in the present embodiment, is leaned in fact Positioning is contacted between two faces, that is, the side of the positioning surface 32 and positioning column 4 that are embedded in 301 side of section is in contact, this side The mode of positioning is contacted between side, locating effect is more stable, longer life expectancy is positioned, even if there are several places to grind between face and face Damage, will not cause locating effect to fail.

Concrete preferred structure is as follows:

In the present embodiment, the shell 2 includes first shell 201 and second shell 202, first shell 201 and second shell It is fixed between body 202 by multiple fasteners, fastener is preferably fastening screw, and the positioning column 4 is one of fastening Screw, the threaded portion of the fastening screw is for first shell 201 to be fixedly connected with second shell 202, the fastening screw Side matched with the positioning surface 32.

Will positioning column 4 be preferably fastening screw so that in the present embodiment wherein a fastening screw both realized by The effect that first shell 201 is fixedly connected with second shell 202, while realizing that limitation tail draws 3 effects circumferentially rotated again, for Position column 4 for, there is no need to the new components of additional, it is only necessary to by original fastening screw it is achieved that So that cost is lower, it is more compact in structure；For tail draws 3 switching operations, as soon as user only needs to unscrew a fastening screw, Tail, which can be rotated, draws 3 to carry out switching operation, very convenient, and traditional linear actuators, it may be necessary to unscrew all fastening spiral shells 3 could be drawn to carry out switching operation tail after nail.

In order to enable the positioning surface 32 being embedded in section 301 is preferably bonded matching with fastening screw, positioned in the present embodiment Face 32 is the cambered surface of indent, and as shown in Figure 3, the peripheral side that section 301 is embedded in the present embodiment is provided with linear arc groove, It is just matched with the peripheral side of fastening screw, positioning surface 32 is arranged to cambered surface, can not only prevent from being embedded in circumferential turn of section 301 It is dynamic, while the axial direction of embedded section 301 can also also be limited.The axial direction of embedded section 301 referred herein, in fact It is exactly the axial direction of screw rod.

In order to facilitate the rotation direction that tail draws 3 is adjusted, at least two positioning surface 32 is circumferential to be evenly distributed on embedded section 301 peripheral side.In the present embodiment, it is embedded on the peripheral side of section 301 and is uniformly arranged four positioning surfaces 32, each positioning surface 32 There is an orientation, positions under column 4 and 32 fit-state of positioning surface, the orientation of positioning surface 32 and the axis of positioning column 4 It is parallel to direction 4a, as shown in figure 4, four positioning surfaces 32 include four orientations, i.e., it is straight where 32a, 32b, 32c, 32d Line direction, the orientation in adjacent positioned face 32 intersect angle A, and angle A is 90 °.

It should be noted that requiring to meet more commutations, the quantity of positioning surface 32 is not limited in the utility model In this present embodiment four, it can be two, three, five etc., the angle A is between 20 °~180 °.

In addition, it includes main paragraph 302 and embedded section 301 that the tail in the present embodiment, which draws 3, it is embedded in section 301 and is mounted in shell 2 It is interior, and main paragraph 302 then stretches out outside shell 2, mounting groove 31 is arranged on main paragraph 302, and the mounting groove 31 is strip groove, Inserting plane 31a is formed inside the strip groove, inserting plane 31a is as shown in figure 4, in order to guarantee that the tail of linear actuators draws 3 There is the suitable installation site of a default, the orientation and inserting plane 31a of at least one in the positioning surface 32 hang down It is straight or parallel.In this way, tail is made to draw 3 when defaulting assembling, the direction for inserting plane 31a is relatively uniform, and is in one More appropriate position.

In addition, being limited in order to further ensure being embedded in the axial direction of section 301, outside the embedded section 301 in the present embodiment Diameter is greater than the outer diameter of main paragraph 302, forms a stage portion, is embedded in section 301 and is located in embedding slot 21, embedding slot 21 can be right It is embedded in the progress axial limiting of section 301 and is equivalent to bearing preferably, bearing 14 is also mounted in the present embodiment in embedding slot 21 14,301 two components of section are embedded in be axially located in embedding slot 21 simultaneously.

Embodiment two

The difference between this embodiment and the first embodiment lies in the positioning column for matching positioning surface is not fastening screw, until In by fastener fixed between first shell and second shell, it still can be fastening screw or other buckle structures.

Positioning column in the present embodiment is positioning pin, and positioning pin is that the mode of inserting inserts in embedding slot, in order to anti- Only positioning pin is detached from from embedding slot, can be fastened with fastener, such as a catching groove, positioning pin are arranged in embedding slot One elastic buckles of middle setting or elastic steel ball, when positioning pin is inserted into, elastic buckles or elastic steel ball and catching groove cooperate, and position simultaneously The side of pin is bonded matching with embedded section 301.Positioning pin can be straight pin or square pin etc..

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, being familiar with the those skilled in the art should be understood that the utility model includes but is not limited to attached drawing and specific embodiment party above Content described in formula.The modification of any function and structure principle without departing from the utility model is intended to be included in claims Range in.

Claims (10)

1. a kind of tail draws location structure, including tail to draw, the tail pulls on the mounting groove being equipped with for fixing driven object body, described Tail drawing is installed on a cage connection and part is stretched out outside shell, which is characterized in that it includes being embedded in section that the tail, which is drawn, in the shell Equipped with embedding slot, the embedded section is rotatably installed in embedding slot, and the peripheral side of the embedded section is equipped at least two positioning surfaces, It further includes the positioning column of installation on the housing that the tail, which draws location structure, and the positioning column is packed into simultaneously outside shell It is extending at least partially into the embedding slot, the side of the positioning column is bonded matching with the positioning surface, to limit the tail Drawing circumferentially rotates.

2. tail as described in claim 1 draws location structure, which is characterized in that the shell includes first shell and second shell Body, the positioning column are fastening screw, and the threaded portion of the fastening screw is used for first shell and the fixed company of second shell It connects, the side of the fastening screw is matched with the positioning surface.

3. tail as claimed in claim 2 draws location structure, which is characterized in that the positioning surface is the cambered surface of indent.

4. tail as claimed in claim 2 draws location structure, which is characterized in that at least two positioning surface is circumferentially uniformly distributed In the peripheral side for being embedded in section.

5. tail as claimed in claim 4 draws location structure, which is characterized in that the positioning surface includes orientation, positioning column Under part and positioning surface fit-state, the orientation of positioning surface is parallel with the positioning axial direction of column, and adjacent positioned face is determined Position direction intersects angle A, and the angle A is 20 °~180 °.

6. tail as claimed in claim 5 draws location structure, which is characterized in that fixed there are four being set on the peripheral side of the embedded section Plane, the orientation angle of intersection between adjacent positioned face is 90 °.

7. tail as claimed in claim 5 draws location structure, which is characterized in that the mounting groove is strip groove, the strip groove Inside, which is formed, inserts plane, and the orientation and inserting plane of at least one in the positioning surface are perpendicular or parallel.

8. tail as described in claim 1 draws location structure, which is characterized in that the embedded section is limited in the axial direction In the embedding slot of shell.

9. tail as described in claim 1 draws location structure, which is characterized in that the positioning column is positioning pin, the positioning Pin inserting passes through fastener spiral-lock on the shell into shell.

10. a kind of linear actuators, including shell, driving motor, geared worm, worm gear, screw rod and nut, which is characterized in that The linear actuators draws location structure using the tail as described in one of claim 1 to 9.