CN112096781B - Torque suction and discharge device based on elastic needle mechanism - Google Patents

Abstract

The invention discloses a torque suction and discharge device based on a spring needle mechanism, which comprises: a track, the track surface of which has a rotational symmetry axis in the geometrical configuration; the track surface is a cylindrical surface or other curved surfaces formed by reducing rotation; the elastic needle comprises a fixed support, a movable support and a pressure spring; the support bodies of the movable support and the fixed support are embedded in opposite directions, and the pressure spring is clamped by the support bottoms of the movable support and the fixed support so as to form a single moving pair or a moving pair rotating at a certain angle through the connection of the pressure spring; the tail of the movable support forms a tip part of the elastic needle, a needle tip of the elastic needle at the tail end of the tip part is abutted against the track surface and moves along the track surface, and the geometry of the needle tip of the elastic needle is matched with that of the track surface; one of the track and the elastic needle is fixed on the torque absorbing and discharging shaft in a mode of following the torque absorbing and discharging shaft, and the other is fixed. The instantaneous contradiction problem between power supply and load demand is solved by the cooperation of the elastic needle and the track surface and the elastic needle is driven by the pressure spring to stretch, namely the torque transmission is endowed with the capacity of peak clipping and valley filling as required.

Description

Torque suction and discharge device based on elastic needle mechanism

Technical Field

The invention relates to the technical field of mechanical energy conservation, in particular to a torque suction and discharge device based on a spring needle mechanism.

Background

Torque (or torque) transmission is one of the basic forms of achieving mechanical work transfer, and power, load, and rotating shafts are the three basic elements of torque transmission. Generally, the power and load have their own intrinsic torsional characteristics, but their intrinsic torsional characteristics are often not matched, resulting in hybrid torque transfer with the negative effects of reduced self-energy conversion efficiency of the power and load, torsional vibration, loss of torsional energy transfer, reduced device life, and reduced reliability.

The rotating shaft torsion power transmission device is distributed in every corner of modern social production and life, but the torque characteristic difference exists between power and load generally, so that the power and load are difficult to fully exert the intrinsic energy conversion efficiency of the power and load. Conventional techniques have given a wide variety of solutions to the torque matching problem of load and power, but simple and thorough solutions are still lacking. For example, in the automotive field, existing solutions include increasing the number of cylinders of the engine, adding flywheels and torsional dampers, etc. These solutions offer a certain degree of resolution to the torque matching problem, but fail to overcome it completely, at the expense of increased system weight, volume, complexity, precision and production costs, and reduced reliability.

In view of this, it is urgently needed to develop a suction and discharge device which can fully exploit the intrinsic energy efficiency of power and load, and thoroughly solve the torque matching problem in a simple manner.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide a torque suction and discharge device based on a spring needle mechanism, which solves the instantaneous contradiction problem between power supply and load demand by driving a spring needle to stretch and contract through a pressure spring through the cooperation of the spring needle and a track surface, namely, the torque transmission is endowed with the capacity of peak clipping and valley filling according to the demand.

To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described, the present invention provides a torque aspirator based on a latch mechanism, comprising:

a track, the track surface of which has a rotational symmetry axis in the geometrical configuration; the track surface is a cylindrical surface or other curved surfaces formed by reducing rotation;

the elastic needle comprises a fixed support, a movable support and a pressure spring; the support bodies of the movable support and the fixed support are embedded in opposite directions, and the pressure spring is clamped by the support bottoms of the movable support and the fixed support so as to form a single moving pair or a moving pair rotating at a certain angle through the connection of the pressure spring; the tail of the movable support forms a tip part of the elastic needle, a needle tip of the elastic needle at the tail end of the tip part is abutted against the track surface and moves along the track surface, and the geometry of the needle tip of the elastic needle is matched with that of the track surface;

one of the track and the elastic needle is fixed on the torque absorbing and spitting shaft in a manner of following the torque absorbing and spitting shaft, and the other is fixed; the torque suction and discharge shaft is a rotating shaft of a rotating part of the torque suction and discharge device and is also a torque transmission shaft between power and load in a torque transmission system.

Preferably, in the torque suction and discharge device based on the latch mechanism, the compression spring is provided at any one of the following positions:

the fixing support is arranged outside the support body of the fixed support and the support body of the movable support;

the fixing support is arranged inside the support body of the fixed support and the support body of the movable support; and

the fixing support and the movable support are arranged in the fixed support body and the movable support body;

when the pressure springs are arranged inside and outside the support body of the fixed support and the support body of the movable support at the same time, at least one pressure spring is arranged inside and outside the support body of the fixed support and the support body of the movable support, and the central lines of the pressure springs are overlapped or parallel to each other; the compression spring combination has only one central line, or a shared central line formed by collinear arrangement of the central lines of the compression springs, or a symmetrical central line formed by mutual symmetrical arrangement of the central lines of the compression springs. The central line of the pressure spring combination (the central line of the pressure spring or the central line of the pressure spring, the same below) is vertically intersected with the axis of the torque absorbing and spitting shaft.

Preferably, in the torque aspirator based on the latch mechanism, the specific form of the movement of the latch needle tip along the track surface is as follows: the elastic needle tip slides along the track surface or rolls along the track surface by taking a straight line parallel to the axis of the torque sucking and spitting shaft as an axis.

Preferably, in the torque suction and ejection device based on the pogo pin mechanism, when the pogo pin tip slides along the track surface, the pogo pin tip is a part of a fixed cylindrical surface or a fixed arc surface of which the axis is parallel to the axis of the torque suction and ejection shaft; when the elastic needle tip rolls along the track surface, the elastic needle tip is a rotating cylindrical surface or a rotating arc surface of which the axis is parallel to the axis of the torque absorbing and spitting shaft; the fixed cambered surface and the rotating cambered surface are both rotating curved surfaces, and a bus opening of the elastic needle tip faces or faces back to the axis of the elastic needle tip.

Preferably, in the torque suction and spitting device based on the pogo pin mechanism, when the pogo pin slides along the track surface, a host of the pogo pin tip is an upright wall, and a top surface of the host is used as the pogo pin tip.

Preferably, in the torque suction and spitting device based on the pogo pin mechanism, when the pogo pin tip rolls along the track surface, the host of the pogo pin tip is a bearing, a rotating shaft or a roller, and the outer surface of the host is used as the pogo pin tip.

Preferably, in the torque suction and spit device based on the elastic needle mechanism, when the elastic needle tip slides or rolls along the track surface, the elastic needle tip does not rotate along the central line of the pressure spring or can rotate along the central line of the pressure spring at a small angle relative to the bottom support of the movable support; the two motion relations of the elastic needle tip relative to the movable support bottom correspond to the following elastic needle tip construction modes:

when the elastic needle tip does not rotate along the central line of the pressure spring, a host of the elastic needle tip sliding along the track surface is directly fixed on the support bottom of the movable support, and a host of the elastic needle tip rolling along the track surface is indirectly fixed on the support bottom of the movable support through a bearing medium; the bearing medium comprises a bearing and a bearing seat, or a bearing shaft and a bearing shaft seat, or a roller shaft and a roller shaft seat, and comprises or does not comprise a thrust bearing or an axial bearing rolling element; the bearing seat or the bearing shaft seat and the roller shaft seat are direct bearing media associated with the host and the support bottom of the movable support, the bearing or the bearing shaft and the roller shaft are first indirect bearing media associated with the host and the support bottom of the movable support, and the thrust bearing or the axial force bearing rolling element is second indirect bearing media associated with the host and the support bottom of the movable support;

when the elastic needle tip can rotate along the central line of the pressure spring, a host of the elastic needle tip sliding along the track surface is used as a rotating slide block to directly or indirectly abut against the support bottom of the movable support, a direct bearing medium of the host of the elastic needle tip rolling along the track surface is used as the rotating slide block to directly or indirectly abut against the support bottom of the movable support, and a thrust bearing is used as an intermediate medium when the rotating slide block indirectly abuts against the support bottom of the movable support; a radial rotating shaft of the elastic needle tip or a fence with a round part is arranged, the radial rotating shaft of the elastic needle tip or the fence is fixed on the support bottom of the movable support, and the axis of the radial rotating shaft of the elastic needle tip or the fence is superposed with the central line of the pressure spring; the rotating slide block rotates around the radial rotating shaft in a sliding or rolling mode, or rotates along the inner wall of the attaching enclosing wall in a sliding or rolling mode, and a rolling medium is arranged during rolling rotation.

Preferably, in the torque suction and discharge device based on the elastic needle mechanism, the motion contact type between the fixed support body and the movable support body comprises a direct type, a medium type and a mixed type, and the mixed type comprises two or three types of partial direct contact, partial medium contact and partial non-contact; wherein the content of the first and second substances,

when the movable support and the fixed support of the elastic needle are sliding pairs rotating at a certain angle, the motion contact type between the support body of the fixed support and the support body of the movable support is a direct type or a mixed type, the contact surface is a cylindrical surface or a local cylindrical surface with symmetry, and the rotation center of the cylindrical surface is superposed with the center line of the pressure spring; the movable support slides in a piston mode in the direction of the central line of the pressure spring and can rotate along the central line of the pressure spring at a certain angle;

when the movable support and the fixed support of the elastic needle are a single moving pair, the motion contact type between the support body of the fixed support and the support body of the movable support is a direct type, a medium type or a mixed type;

for the direct type: the contact surface of the support body of the fixed support and the support body of the movable support is any other type of cylindrical surface except the cylindrical surface or an incomplete cylindrical surface with rotation limiting characteristics, and the movable support keeps single piston type sliding along the central line direction of the pressure spring;

for the medium type: the bearing body of the fixed support and the bearing body of the movable support adopt rolling elements as motion contact media, the matching surface between the bearing body of the movable support and the bearing body of the fixed support is a polygonal cylindrical surface or a cylindrical surface with other shapes, and the movable support keeps single piston type sliding along the central line direction of the pressure spring.

Preferably, in the torque suction and discharge device based on the elastic needle mechanism, when all or part of the fixed support body and the movable support body are in contact with each other through a motion contact medium, and the matching surface between the movable support body and the fixed support body is a rectangular cylindrical surface, the center line of the rectangular cylindrical surface coincides with the center line of the pressure spring, two parallel opposite surfaces of the rectangular cylindrical surface are respectively parallel to a plane of the elastic needle passing through the center line of the pressure spring and the axis of the torque suction and discharge shaft and a plane of the elastic needle passing through the center line of the pressure spring and perpendicular to the axis of the torque suction and discharge shaft, and the two parallel opposite surfaces are respectively called a first rectangular matching opposite surface and a second rectangular matching opposite surface; the first rectangular matching opposite surfaces of the fixed support and the movable support are correspondingly divided into a left matching surface and a right matching surface, and the second rectangular matching opposite surfaces are correspondingly divided into a front matching surface and a rear matching surface; the rectangle where the first rectangle matching opposite surface and the second rectangle matching opposite surface of the movable support are located is surrounded by or surrounds the rectangle where the first rectangle matching opposite surface and the second rectangle matching opposite surface of the fixed support are located, but the opposite sides of the rectangle where the second rectangle matching opposite surface of the fixed support or the movable support is located can be overlapped or nearly overlapped;

the motion contact media are in a set, and the type of the motion contact media is a bearing type, a rotating shaft type, a roller type or a rolling rod type;

when the type of the motion contact medium is a bearing type, a rotating shaft type or a roller type, each set of motion contact medium comprises at least two groups of elements, each group of elements consists of a rolling element, a support element of the rolling element and a fixed element for attaching the support element to a fixed support or a movable support, and the axes of the rolling elements in each group are in the same plane and are parallel to each other; the surface of the rolling element directly contacts the matching surface of the fixed support or the movable support, and the supporting element of the rolling element is fixed on the matching surface of the movable support or the fixed support by the fixing element of the supporting element;

when the type of the motion contact medium is a rolling rod type, each set of motion contact medium comprises two or more rolling rods which are arranged in parallel and two connecting rods which position and combine the rolling rods together, and the central lines of the rolling rods are positioned on the same plane and are parallel to each other; only one set of motion contact medium is respectively arranged between the left and right matching surfaces of the fixed support and the movable support, or one set of motion contact medium is respectively arranged between the front, back, left and right matching surfaces of the fixed support and the movable support; and the rolling rod is clamped between the corresponding matching surfaces of the fixed support and the movable support, and the rolling rod simultaneously contacts the matching surfaces of the fixed support and the movable support.

The invention at least comprises the following beneficial effects:

in the torque suction and discharge device based on the pogo pin mechanism, the pogo pin is a mechanical energy storage element having elasticity in the torque suction and discharge device, and the change in the elasticity is governed by the combination of the change in the shape of the rail element in the torque suction and discharge device and the change in the angle of rotation of the torque suction and discharge shaft. The elastic needle can also be applied to other mechanical devices with the functions of absorbing and discharging power, the elastic needle is stretched and contracted through the matching of the elastic needle and the track surface, the instantaneous contradiction problem between power supply and load demand is solved through the stretching and contraction of the elastic needle, the timing and equal execution can be realized, and the torque vibration problem with a specific torsion cycle is completely solved theoretically and practically through a novel device with a simple structure.

The sliding contact between the pin of the elastic needle and the rail surface is beneficial to the miniaturization of the rail size, and the rolling contact is beneficial to reducing the friction loss. When the elastic needle is a moving pair rotating at a certain angle, although the sliding torsion increases the structural complexity, the relative motion between the needle tip of the elastic needle and the track surface during load change is converted from sliding to rolling, and the rolling torsion further increases the structural complexity, so that the rolling trend between the needle tip and the track surface during load change can be kept, and the torsional friction force can be reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a structural diagram of a torque suction and discharge device based on a bullet needle mechanism according to the present invention;

FIG. 2 is a schematic view of a radial slide-cylinder slide stationary needle according to the present invention;

FIG. 3 is a view showing the structure of a radial sliding-cylinder rolling fixed supporting spring needle according to the present invention;

FIG. 4 is a schematic diagram of a radial bracketing side bearing rolling-cylinder rolling locking bullet pin of the present invention;

FIG. 5 is a structural diagram of a cambered surface rolling-single top bearing movable support according to the present invention;

FIG. 6 is a structural diagram of a cambered surface rolling-fixing-composite top bearing movable support according to the present invention;

FIG. 7 is a structural view of a cambered surface rolling sliding support according to the present invention;

FIG. 8 is a structural view of a cambered surface rolling support according to the present invention;

FIG. 9 is a schematic view of a radial dynamic bearing rolling-cylinder rolling stationary dynamic supporting spring pin according to the present invention;

FIG. 10 is a schematic diagram of a radial roller rolling-cylinder rolling fixed supporting spring needle according to the present invention;

FIG. 11 is a structural view of a radial and axial double roller bar rolling pogo pin according to the present invention;

FIG. 12 is a block diagram of a dynamic package fixed bullet needle according to the present invention;

FIG. 13 is a view showing the construction of an external pressure spring pogo pin according to the present invention;

fig. 14 is a structural diagram of a radial sliding and rotating-cylindrical rolling fixed supporting spring needle according to the invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It should be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof, and that various approximations, non-ideal modifications, or changes in the configuration of non-critical elements are within the scope of the present application.

As shown in fig. 1, the present invention provides a torque suction and discharge device based on a latch mechanism, comprising:

a rail 1, the rail surface 10 of which has a rotational symmetry axis in the geometrical configuration; the track surface 10 is a cylindrical surface or other curved surfaces formed by reducing rotation;

the bullet needle 2 comprises a fixed support 20, a movable support 21 and a pressure spring 22; the support bodies of the movable support 21 and the fixed support 20 are embedded in an opposite mode, and the pressure spring 22 is clamped by the support bottoms of the movable support 21 and the fixed support 20 so as to form a single moving pair or a moving pair rotating at a certain angle through the connection of the pressure spring 22; the tail of the movable support 21 forms the tip part of the elastic needle 2, an elastic needle tip 23 at the tail end of the tip part is abutted against the track surface 10 and moves along the track surface 10, and the geometric matching of the elastic needle tip 23 and the track surface 10 is realized;

one of the track 1 and the elastic needle 2 is fixed on the torque absorbing and spitting shaft in a manner of following the torque absorbing and spitting shaft, and the other is fixed; the torque suction and discharge shaft is a rotating shaft of a rotating part of the torque suction and discharge device and is also a torque transmission shaft between power and load in a torque transmission system.

In the scheme, the rail fixing is called a transfer needle type, and the bullet needle fixing is called a transfer rail type; the bullet needle can be arranged inside the track or outside the track, the former is called an inner needle type, and the latter is called an outer needle type. For the inner needle type, the inner surface of the rail is a rail surface; for the outer needle type, the outer surface of the track is a track surface. The bullet needle tip butts the track face to can set up 1 as required, 2, 3 or more bullet needles on the track, and when the bullet needle is a plurality of, for the interior needle type, the distribution of bullet needle needs the structure that the needle tail interconnect and evenly distributed, for the exterior needle type, the bullet needle is along orbital radial interval even distribution in orbital outside, and track or bullet needle rotate under the drive of moment of torsion sucking and spitting axle during operation, and bullet needle tip slides or rolls along the track face. The track is a variable-diameter hub, namely the track surface of the track changes with the change of a corner, the elastic needle is connected by a fixed support and a movable support through a pressure spring to form a moving pair, the pressure spring only can stretch and contract but cannot bend or twist, the length of the elastic needle and the length of the pressure spring stretch and contract along with the rotation of the torque suction and discharge shaft due to the constraint of the variable-diameter track surface, namely the stretching and the contraction of the pressure spring are controlled through the matching of the elastic needle and the track surface, when the length of the pressure spring is shortened, the pressure spring absorbs work, and when the length of the pressure spring is lengthened, the pressure spring releases work. When the length of the pressure spring is kept unchanged, the work is not absorbed or released, and the torque work is absorbed and discharged in the radial direction. In any torsion period, the accumulated power absorption amount and the accumulated power release amount of the pressure spring are equal, the length of the pressure spring is restored to the value at the beginning of the period when the period is ended, the problem of instantaneous contradiction between power supply and load demand is solved through the expansion and contraction of the pressure spring, the timing and equal execution can be realized, and the problem of torque vibration with a specific torsion period is completely solved theoretically and practically through a novel device with a simple structure.

With this torque suction and discharge device based on the pogo pin mechanism, the instantaneous excessive torque between the power and the load is cancelled by the timing balance, the instantaneous excessive torsional work is absorbed by the timing balance, the instantaneous insufficient torque between the power and the load is compensated by the timing balance, and the instantaneous insufficient torsional work is fed by the timing balance. The torque aspirator absorbs the excessive work in any one torsional work transmission period, the accumulated amount of the excessive work is equal to the accumulated amount of the insufficient work, and the torque aspirator does not produce work and consume work as a whole (friction and other torsional work loss caused by introducing the torque aspirator are not considered or the loss is counted into load), namely the torque aspirator based on the elastic needle mechanism has the peak clipping and valley filling capacity according to the requirement for torque transmission.

In a preferred embodiment, the compression spring 22 is disposed at any one of the following positions:

the fixing support is arranged outside the support body of the fixed support 20 and the support body of the movable support 21;

the fixing support is arranged inside the support body of the fixed support 20 and the support body of the movable support 21; and

the fixing support is arranged inside and outside the support body of the fixing support 20 and the support body of the movable support 21;

when the pressure springs 22 are arranged inside and outside the support body of the fixed support 20 and the support body of the movable support 21 at the same time, at least one pressure spring 22 is arranged inside and outside the support body of the fixed support 20 and the support body of the movable support 21, and the central lines of the pressure springs 22 are overlapped or parallel to each other.

In the scheme, the outer compression spring is beneficial to improving the bearing capacity of the spring needle, and the inner compression spring is beneficial to reducing the size and weight of the spring needle; the compression spring combination has only one central line, or a shared central line formed by collinear arrangement of the central lines of the compression springs, or a symmetrical central line formed by mutual symmetrical arrangement of the central lines of the compression springs. The central line of the pressure spring combination (the central line of the pressure spring or the central line of the pressure spring, the same below) is vertically intersected with the axis of the torque absorbing and spitting shaft.

In a preferred embodiment, the movement of the pogo pin tip 23 along the track surface 10 is in the form of: the latch needle tip 23 slides along the track surface 10, or rolls along the track surface 10 with a straight line parallel to the axis of the torque sucking and discharging shaft as an axis.

In the above scheme, the sliding contact between the elastic needle tip and the track surface is beneficial to the miniaturization of the track size, and the rolling contact is beneficial to the reduction of friction loss.

In a preferred scheme, when the elastic needle tip 23 slides along the track surface 10, the elastic needle tip 23 is a part of a fixed cylindrical surface or a fixed arc surface of which the axis is parallel to the axis of the torque suction and ejection shaft; when the elastic needle tip 23 rolls along the track surface 10, the elastic needle tip 23 is a rotating cylindrical surface or a rotating arc surface with the axis parallel to the axis of the torque absorbing and spitting shaft; the fixed cambered surface and the rotating cambered surface are both rotating curved surfaces, and a bus opening of the elastic needle tip 23 faces or faces away from the axis of the elastic needle tip 23.

In the scheme, the cylindrical surface needle tip geometry can meet the large elastic needle bearing load, and the cambered surface needle tip geometry can improve the load-changing adaptability of the torque suction and discharge device.

In a preferred embodiment, when the latch pin 23 slides along the track surface 10, the host of the latch pin 23 is an upright wall, and the top surface of the host is used as the latch pin 23.

In a preferred embodiment, when the latch pin 23 rolls along the track surface 10, the host of the latch pin 23 is a bearing, a rotating shaft or a roller, and the outer surface of the host is used as the latch pin 23.

In a preferable scheme, while the elastic needle tip 23 slides or rolls along the track surface, the elastic needle tip 23 does not rotate along the central line of the pressure spring 22 or can rotate along the central line of the pressure spring 22 at a small angle relative to the bottom of the movable holder 21; the two motion relations of the elastic needle tip 23 relative to the support bottom of the movable support 21 correspond to the following elastic needle tip construction modes:

when the elastic needle tip 23 does not rotate along the central line of the pressure spring 22, the host of the elastic needle tip 23 sliding along the track surface 10 of the elastic needle tip 23 is directly fixed on the support bottom of the movable support 21, and the host of the elastic needle tip 23 rolling along the track surface 10 of the elastic needle tip 23 is indirectly fixed on the support bottom of the movable support 21 through a bearing medium; the bearing medium comprises a bearing and a bearing seat, or a bearing shaft and a bearing shaft seat, or a roller shaft and a roller shaft seat, and comprises or does not comprise a thrust bearing or an axial bearing rolling element; the bearing seat or the bearing shaft seat and the roller shaft seat are direct bearing media associated with the host and the support bottom of the movable support 21, the bearing or the bearing shaft and the roller shaft are first indirect bearing media associated with the host and the support bottom of the movable support 21, and the thrust bearing or the axial force bearing rolling element is second indirect bearing media associated with the host and the support bottom of the movable support 21;

when the elastic needle tip 23 can rotate along the central line of the pressure spring 22, the host of the elastic needle tip 23 sliding along the track surface 10 by the elastic needle tip 23 is taken as a rotating slide block to directly or indirectly abut against the bottom of the movable support 21, the direct bearing medium of the host of the elastic needle tip 23 rolling along the track surface 10 by the elastic needle tip 23 is taken as a rotating slide block to directly or indirectly abut against the bottom of the movable support 21, and when the rotating slide block indirectly abuts against the bottom of the movable support 21, a thrust bearing is taken as an intermediate medium; a radial rotating shaft or a locally round enclosing wall of the elastic needle tip 23 is arranged, the radial rotating shaft or the enclosing wall of the elastic needle tip 23 is fixed on the support bottom of the movable support 21, and the axis of the radial rotating shaft or the enclosing wall is superposed with the central line of the pressure spring 22; the rotating slide block rotates around the radial rotating shaft in a sliding or rolling mode, or rotates along the inner wall of the attaching enclosing wall in a sliding or rolling mode, and a rolling medium is arranged during rolling rotation.

In the scheme, the needle tip is fixed relative to the movable support base, so that the structure is simplified, the sliding torsion increases the structural complexity, but the relative motion between the needle tip and the rail surface is converted from sliding to rolling during variable load, the rolling torsion further increases the structural complexity, the rolling trend between the needle tip and the rail surface during variable load can be kept, and the torsional friction force can be reduced.

In a preferable scheme, the rotating slide block slides and rotates or rolls around the radial rotating shaft of the elastic needle tip 23, or slides and rotates or rolls along the inner wall of the enclosing wall.

In a preferred embodiment, the types of the moving contact between the body of the fixed holder 20 and the body of the movable holder 21 include a direct type, a medium type and a mixed type, and the mixed type includes two or three of a partial direct contact, a partial medium contact and a partial non-contact; wherein the content of the first and second substances,

when the movable support 21 and the fixed support 20 of the elastic needle 2 are sliding pairs which rotate at a certain angle, the type of the motion contact between the support body of the fixed support 20 and the support body of the movable support 21 is direct type or mixed type, the contact surface is a cylindrical surface or a local cylindrical surface with symmetry, and the rotation center of the cylindrical surface is superposed with the center line of the pressure spring 22; the movable support 21 slides in a piston mode in the direction of the central line of the pressure spring 22 and can rotate along the central line of the pressure spring 22 at a certain angle;

when the movable support 21 and the fixed support 20 of the elastic needle 2 are a single moving pair, the motion contact type between the support body of the fixed support 20 and the support body of the movable support 21 is a direct type, a medium type or a mixed type;

for the direct type: the contact surface of the support body of the fixed support 20 and the support body of the movable support 21 is any other type of cylindrical surface except for the cylindrical surface or an incomplete cylindrical surface with rotation limiting characteristics, and the movable support 21 keeps single-piston sliding along the central line direction of the pressure spring 22;

for the medium type: rolling elements are adopted between the support body of the fixed support 20 and the support body of the movable support 21 as motion contact media, the matching surface between the support body of the movable support 21 and the support body of the fixed support 20 is a polygonal cylindrical surface or a cylindrical surface with other shapes, and the movable support 21 keeps single piston type sliding along the central line direction of the pressure spring 22.

In the above scheme, the slip contact of two support bodies does benefit to and reduces bullet needle size and weight and does benefit to and improves bullet needle bearing capacity, the slip of two support bodies is rotated concurrently and is touched and connect and does benefit to the variable load structure who simplifies the bullet needle, three kinds of rolling contact are favorable to reducing friction loss, two kinds of side bearings roll and have a lower requirement to the contact power between two support bodies under the zero bearing load, decide support side bearing roll can reduce and move and hold in the palm weight and size, it can reduce bullet needle length to move support side bearing roll, it does benefit to and reduces bullet needle size to roll the pole, improve bullet needle bearing capacity and life-span, reduce bullet needle cost.

In a preferable scheme, when the whole or part of the support body of the fixed support 20 and the support body of the movable support 21 are in contact with a contact medium through movement, and the matching surface between the support body of the movable support 21 and the support body of the fixed support 20 is a rectangular cylindrical surface, the central line of the rectangular cylindrical surface is overlapped with the central line of the pressure spring, two groups of parallel opposite surfaces of the rectangular cylindrical surface are respectively parallel to a plane of the elastic needle 2 passing through the central line of the pressure spring 22 and the axis of the torque suction and discharge shaft and a plane of the elastic needle passing through the central line of the pressure spring 22 and perpendicular to the axis of the torque suction and discharge shaft, and the two groups of parallel opposite surfaces are respectively called a first rectangular matching opposite surface and a second rectangular; the first rectangular matching opposite surfaces of the fixed support 20 and the movable support 21 are respectively and correspondingly divided into a left matching surface and a right matching surface, and the second rectangular matching opposite surfaces are respectively and correspondingly divided into a front matching surface and a rear matching surface; the rectangle where the first rectangle matching opposite surface and the second rectangle matching opposite surface of the movable support 21 are located is surrounded by or surrounds the rectangle where the first rectangle matching opposite surface and the second rectangle matching opposite surface of the fixed support 20 are located, but opposite sides of the rectangle where the second rectangle matching opposite surface of the fixed support 20 or the movable support 21 is located can be overlapped or nearly overlapped;

the motion contact media are in a set, and the motion contact media are bearings, bearing shafts or rolling rods;

when the motion contact media are bearings or bearing shafts, each set of motion contact media comprises at least two groups of elements, each group of element combination comprises a rolling element, a supporting element of the rolling element and a fixing element for attaching the supporting element to a fixed support or a movable support, and the axes of the rolling elements in each group are in the same plane and are parallel to each other; the surface of the rolling element directly contacts the matching surface of the fixed support 20 or the movable support 21, and the supporting element of the rolling element is fixed on the matching surface of the movable support 21 or the fixed support 20 by the fixing element of the supporting element;

when the type of the motion contact medium is a rolling rod type, each set of motion contact medium comprises two or more rolling rods which are arranged in parallel and two connecting rods which position and combine the rolling rods together, and the central lines of the rolling rods are positioned on the same plane and are parallel to each other; only one set of motion contact medium is respectively arranged between the left and right matching surfaces of the fixed support 20 and the movable support 21, or one set of motion contact medium is respectively arranged between the front, back, left and right matching surfaces of the fixed support 20 and the movable support 21; and the roller is clamped between the corresponding matching surfaces of the fixed support 20 and the movable support 21, and the roller simultaneously contacts the matching surfaces of the fixed support 20 and the movable support 21.

In the above scheme, decide to hold in the palm the package and move and hold in the palm and be favorable to reducing and move support weight and size, move and hold in the palm the package and decide to hold in the palm and do benefit to the installation maintenance. The arrangement of the rolling rod can assist in realizing the relative movement between the movable support and the fixed support.

Example 1

As shown in fig. 2, the pin is a radial sliding-cylindrical sliding fixed movable supporting pin, the movable supporting tail 210 is a fixed vertical wall 211 with a cylindrical surface as a top surface, a cylindrical generatrix is parallel to a spindle axis of the movable support, and anti-falling walls or reinforcing ribs can be added on two sides of the fixed vertical wall 211. The fixed upright wall 211 and the reinforcing ribs thereof are fixed on the movable support base 212 or are integrated with the movable support base 212. When the device works, the cylindrical surface is in sliding contact with the track surface 10, and the cylindrical surface is fixed relative to the movable support base 212.

Example 2

As shown in fig. 3 and 4, the pin is a radial sliding-cylindrical rolling fixed movable pin and a radial fixed-supporting side bearing rolling-cylindrical rolling fixed movable pin, and the movable supporting tail 210 of the pin is composed of a top bearing 4, two top bearing shaft brackets 5 and a top bearing shaft 6. The outer surface of the top bearing 4 is a cylindrical surface, the top bearing shaft 6 is fixed, and the top bearing shaft bracket 5 is fixed on the movable support base 212 or integrated with the movable support base 212. The generatrix of the external cylindrical surface of the top bearing 4 is parallel to the axis of the main shaft of the bullet needle. When the bearing is in operation, the cylindrical surface of the top bearing 4 is in rolling contact with the track surface 10 and is fixed relative to the movable support base 212.

Example 3

As shown in fig. 5 and fig. 6, the single top bearing movable support and the composite top bearing movable support are respectively provided, and the movable support tail 210 of the movable support 21 is composed of a top bearing 4, two top bearing shaft brackets 5 and a top bearing shaft 6. The top bearing shaft 6 is fixed, the axis of the top bearing shaft 6 is parallel to the axis of the main shaft, the top bearing frame 5 is fixed on the movable support base 212 or integrated with the movable support base 212, and the top bearing frame is two vertical walls which are parallel and symmetrical to a plane (a first symmetrical plane of the bullet needle) of the bullet needle 2 passing through the central line of the pressure spring 22 and perpendicular to the axis of the main shaft. The top bearing pedestal 5 can also be provided with two vertical walls which are parallel and symmetrical to a plane (a second symmetrical plane of the bullet needle) of the bullet needle 2 passing through the central line of the pressure spring 22 and the axis of the main shaft, and the four vertical walls are connected together to form a fence. The top bearing 4 is a single bearing 40 or a composite bearing 41.

The outer surface of the single bearing 40 is a rotating arc surface, the generatrix is a plane arc line with an opening facing or facing away from the axis of the top bearing shaft 6, and the rotating arc surface includes but is not limited to a spherical surface. The arc shape and the opening direction are matched with the specific shape of the track surface 10. When in use, the outer surface cambered surface of the top bearing 4 is in rolling contact with the track surface 10 and is fixed relative to the movable support base 212.

The composite bearing 41 is a device which is added on two sides of the single cambered surface bearing 40 and bears the force in the axial direction and rolls in the tangential direction. The axial force bearing tangential rolling device consists of a column ring 410 and a ball ring 411. One end of the collar 410 is fixed to a side surface of a ball ring 411 of the single body bearing 40, and the ball ring 411 is sandwiched between the collar 410 and the top bearing bracket 5. On the side of the collar 410 and the top bearing carrier 5 contacting the ball ring 411 there are grooves 412, two of which grooves 412 snap-fit to receive the ball ring 411. The collar 410 has an inner diameter greater than or equal to the diameter of the top bearing shaft 6. When the single bearing support device works, the column ring 410 rotates along the top bearing shaft 6 along with the ball ring 411 of the single bearing 40, the column ring 410 is in rolling contact with the top bearing shaft frame 5, the outer surface arc surface of the single bearing 40 is in rolling contact with the rail surface 10, and the single bearing support device is fixed relative to the movable support base 212.

Example 4

As shown in fig. 7, the cambered roller sliding support, the movable support tail 212 of the movable support 21 is composed of a top bearing 4, two top bearing carriages 7 and a top bearing shaft 6. The outer surface of the top bearing 4 is a rotating arc surface, the generatrix is a plane arc line opening towards or away from the axis of the top bearing 6, and the rotating arc surface includes but is not limited to a spherical surface. The arc shape and the opening direction are matched with the specific shape of the track surface 10. The top bearing shaft sliding frame 7 is fixed on the movable support base 212 or integrated with the movable support base 212, and is a cross-shaped groove seat taking the outer surface of the movable support base 212 as the bottom surface, the grooves with the length directions parallel to the first symmetrical surface and the second symmetrical surface of the elastic needle are respectively called a transverse groove 70 and a vertical groove 71, the transverse groove 70 and the vertical groove 71 are respectively symmetrical along the first symmetrical surface and the second symmetrical surface of the elastic needle, the vertical groove 71 receives and limits the top bearing 4, and the transverse groove 70 receives and limits the top bearing shaft 6. Both end surfaces of the lateral groove 70 are vertical cylindrical surfaces having the center line of the pressure spring 22 as a rotation axis. Two ends of the top bearing shaft 6 are respectively provided with an upright slide block 72, the outer side surface of each upright slide block 72 is an upright cylindrical surface, and the cylindrical surface of each upright slide block 72 is tangent to the cylindrical surface of the corresponding transverse groove 70. When the rolling type rolling bearing works, the outer arc surface of the top bearing 4 is in rolling contact with the track surface 10, the top bearing shaft 6 is in sliding contact with the top bearing shaft sliding frame 7 and the movable support bottom 212, and the outer arc surface of the top bearing 4 is in sliding torsion relative to the movable support bottom 212.

Example 5

As shown in fig. 8, the rolling shoe of the arc rolling is formed by adding a rolling shoe between the tail 210 and the bottom 212 of the rolling shoe of the arc rolling fixed rolling shoe described in embodiment 3. The rotary support consists of a rotary support top frame 8, a cylindrical rotary support bearing 9, a rotary support square table 10 with a central circular hole, a rotary support ball ring 11 and a rotary support shaft 12, and the radial direction and the axial direction can bear force in a rolling manner. The movable support tail 210 in the above-mentioned arc surface rolling scheme is fixed on the rotary support top frame 8 and is a part of a new movable support tail 210.

The rotary supporting shaft 12 is a rotating shaft of the cylindrical rotary supporting bearing 9, and is vertically fixed on the movable supporting base 212 or integrated with the movable supporting base 212, and the axis is superposed with the central line of the pressure spring 22. One end of the rotary supporting square table 10 is fixed with one side surface of the cylindrical rotary supporting bearing 9, the rotary supporting ball ring 11 is clamped between the other end of the rotary supporting square table 10 and the movable supporting base 212, and the rotating central lines of the cylindrical rotary supporting bearing 9, the rotary supporting ball ring 11 and the rotary supporting square table 10 are the same. The end surfaces of the rotary supporting square table 10 and the clamping rotary supporting ball ring 11 of the movable supporting bottom 212 are provided with rotary supporting ball ring grooves 13, and the two rotary supporting ball ring grooves 13 are buckled with each other to accommodate the rotary supporting ball ring 11. The inner diameter of a round hole of the rotary supporting square table 10 is larger than or equal to the diameter of a rotary supporting shaft 12, the side length of the rotary supporting square table 10 is larger than the outer diameter of a rotary supporting ball ring 11, and a part of one end of the rotary supporting square table 10, which protrudes out of the rotary supporting ball ring 11, forms a rotary supporting axial force bearing platform 14. The rotary supporting top frame 8 is a barrel with square outside and round inside, the rotary supporting bearing 9 is tightly sleeved on the rotary supporting top frame, and the barrel edge is abutted against and fixed on the axial force bearing platform 14. When the top bearing works, the outer surface cambered surface of the top bearing 4 is in rolling contact with the track surface 10 and is rolled and twisted relative to the movable support bottom 212.

Example 6

As shown in fig. 9-11, a radial dynamic bearing rolling-cylindrical rolling fixed dynamic supporting spring needle, a radial rolling-cylindrical rolling fixed dynamic supporting spring needle and a radial and axial dual rolling-cylindrical rolling spring needle are respectively provided, the side bearing 15 of the spring needle is fixed on both sides of the fixed support 20 or the dynamic support body 220 through a side bearing shaft frame 16, and the side bearing 15, the side bearing shaft 17 and the side bearing shaft frame 16 are used as a part of the fixed support 20 or the dynamic support body 220. Each side comprises at least two bearings, and the bearing axes are parallel to the main shaft axis. The axes of the bearings on each side are coplanar, and the two planes are parallel to the first symmetrical plane of the spring pin. The body contact movement states of the side bearing 15 fixed to the fixed bearing body 200 and the movable bearing body 220 are referred to as fixed bearing side bearing rolling and movable bearing side bearing rolling, respectively. In the process of the extension and retraction of the elastic needle 2, each group of bearings on two sides of the support body where the side bearing 15 is located are in rolling contact with the other support body. The surface shape of the side bearing 15 or the side bearing 17 is kept matched with the shape of the corresponding contact surface of the dynamic support 21 or the static support body 200.

The contact movement of the fixed support body 200 and the movable support body 220 is accomplished by two roller sets 18 as an intermediary. Each roller group 18 is rectangular as a whole and comprises two or more parallel rollers 180 and two connecting rods 181 perpendicular to the rollers 180, the central lines of the rollers 180 and the connecting rods 181 are coplanar (called as a roller group plane), the two connecting rods 181 form two opposite sides of the rectangle, and the two rollers 180 at the outermost sides form the other two opposite sides of the rectangle. The rolling rod 181 may be an equal diameter round rod or a variable diameter round rod, and the vertical cross-sectional shape thereof matches the shape of the corresponding contact portion of the fixed support body 200 and the movable support body 220. The link 181 is comprised of one or more rod segments and two or more collars 182, each collar 182 being connected by a rod segment to form a straight line. The number of the ferrules 182 on one connecting rod 181 in each roller group 18 is equal to the number of the rollers 181, and the number of the rod sections is one less. The ferrule 182 on the connecting rod 181 is sleeved on the end part of the rolling rod 180, the two rolling rod groups 18 are distributed on two sides of the first symmetrical surface of the elastic needle and clamped between the fixed support body 200 and the movable support body 220, the plane of the rolling rod group 18 is parallel to the first symmetrical surface of the elastic needle, and the axis of the rolling rod 180 is parallel to the axis of the main shaft. The rolling rod 180 is contacted with the fixed support body 200 and the movable support body 220 and bears force, and the connecting rod 181 is not contacted with the two support bodies or contacted with the two support bodies but does not bear force. The movable support body 220 drives the roller set 18 to roll along the fixed support body 200, when the length of the compressed spring 22 is shortest, the movable support body 220 and the roller set 18 reach the bottom dead center, and when the length of the compressed spring 22 is longest, the movable support body 220 and the roller set 18 reach the top dead center. The fixed support body 200 or the movable support body 220 may further have upper and lower roller baffles at upper and lower stopping points corresponding to the roller set 18, so as to position the roller set 18 during installation and limit the rolling range of the roller set 18 during operation.

Example 7

The relative position relationship between the fixed support 20 and the movable support 21 may be that the fixed support body 200 wraps the fixed package movable elastic needle of the movable support body 220, and the movable support body 220 wraps the movable package fixed elastic needle of the fixed support body 209, as shown in fig. 12.

Example 8

The position relation between the pressure spring 22 and the fixed support body 200 and the movable support body 220 comprises an inner pressure spring and an outer pressure spring, the former means that the pressure spring 22 is arranged inside the fixed support body 200 and the movable support body 220, the fixed support body 200 and the movable support body 220 are both hollow, the shape (such as a circle or a square) of the pressure spring 22 determines the inner shape of the fixed support body 200 or/and the movable support body 220, and the fixed support bottom 201 and/or the movable support bottom 212 can have a central part region protruding into the pressure spring 22 so as to position the pressure spring 22. The latter is shown in fig. 13, which means that the compression spring 22 is located outside the fixed support body 200 and the movable support body 220, and at this time, the fixed support base 201 and the movable support base 212 both protrude out of the fixed support body 200 and the movable support body 220, that is, both support bases have outer edges to clamp the compression spring 22. The shape of the pressure spring 22 determines the external shape of the fixed support body 200 or/and the movable support body 220.

Example 9

As shown in fig. 14, the radial sliding and rotating-cylindrical rolling fixed movable supporting spring needle is provided with a fixed supporting body 200 and a movable supporting body 220 which are in sliding and rotating contact; the contact surface between the fixed support body 200 and the movable support body 220 is a complete cylindrical surface or a symmetrical partial cylindrical surface, the rotation center of the cylindrical surface is superposed with the central line of the pressure spring 22, and the movable support 21 slides in a piston manner in the direction of the central line of the pressure spring 22 and can rotate along the central line of the pressure spring 22 at a small angle.

In conclusion, the invention provides various bullet needle construction schemes based on the basic structure and the basic function of the bullet needle, can adapt to the diversity and the universality of application scenes, and is expected to meet various special requirements or practical condition limitations.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a torque is inhaled and is told ware based on bullet needle mechanism which characterized in that includes:

a track, the track surface of which has a rotational symmetry axis in the geometrical configuration; the track surface is a cylindrical surface or other curved surfaces formed by reducing rotation;

the elastic needle is a mechanical energy storage element with elasticity and comprises a fixed support, a movable support and a pressure spring; the support bodies of the movable support and the fixed support are embedded in opposite directions, and the pressure spring is clamped by the support bottoms of the movable support and the fixed support so as to form a single moving pair or a moving pair rotating at a certain angle through the connection of the pressure spring; the tail of the movable support forms a tip part of the elastic needle, a needle tip of the elastic needle at the tail end of the tip part is abutted against the track surface and moves along the track surface, and the geometry of the needle tip of the elastic needle is matched with that of the track surface;

wherein, one of track and bullet needle is fixed on the axle is inhaled to the moment of torsion with the follow-up mode of moment of torsion inhaling spit axle, and another is fixed motionless to the flexible of pressure spring is controlled through the cooperation of bullet needle and track face, and inhales in the radial moment as required and spits to the moment of torsion merit through the flexible of pressure spring, specifically do: when the length of the pressure spring is shortened, the pressure spring absorbs work; when the length of the pressure spring is extended, the pressure spring releases work; when the length of the pressure spring is kept unchanged, the work is not absorbed or released; the torque suction and discharge shaft is a rotating shaft of a rotating part of the torque suction and discharge device and is also a torque transmission shaft between power and load in a torque transmission system.

2. The bullet needle mechanism based torque aspirator of claim 1, wherein the compression spring is arranged in any one of the following positions:

the fixing support is arranged outside the support body of the fixed support and the support body of the movable support;

the fixing support is arranged inside the support body of the fixed support and the support body of the movable support; and

the fixing support and the movable support are arranged in the fixed support body and the movable support body;

when the pressure springs are arranged inside and outside the fixed support body and the movable support body, at least one pressure spring is arranged inside and outside the fixed support body and the movable support body, and the central lines of the pressure springs are overlapped or parallel.

3. The bullet needle mechanism based torque aspirator of claim 1, wherein the movement of the bullet needle tip along the track surface is in the form of: the elastic needle tip slides along the track surface or rolls along the track surface by taking a straight line parallel to the axis of the torque sucking and spitting shaft as an axis.

4. The torque suction and ejection device based on the pogo pin mechanism as claimed in claim 3, wherein when the pogo pin tip slides along the track surface, the pogo pin tip is a part of a fixed cylindrical surface or a fixed arc surface having an axis parallel to the axis of the torque suction and ejection shaft; when the elastic needle tip rolls along the track surface, the elastic needle tip is a rotating cylindrical surface or a rotating arc surface of which the axis is parallel to the axis of the torque absorbing and spitting shaft; the fixed cambered surface and the rotating cambered surface are both rotating curved surfaces, and a bus opening of the elastic needle tip faces or faces back to the axis of the elastic needle tip.

5. The bullet needle mechanism based torque aspirator of claim 4, wherein the host of the bullet needle tip is an upright wall and the top surface of the host is the bullet needle tip as the bullet needle tip slides along the track surface.

6. The bullet needle mechanism based torque aspirator of claim 4, wherein the host of the bullet needle tip is a bearing, a rotating shaft or a roller, and the outer surface of the host is used as the bullet needle tip when the bullet needle tip rolls along the track surface.

7. The torque suction and spitting device based on the pogo pin mechanism of claim 4, wherein while the pogo pin tip slides or rolls along the track surface, the pogo pin tip does not rotate or can rotate at a small angle along the center line of the compression spring or relative to the movable holder base; the two motion relations of the elastic needle tip relative to the movable support bottom correspond to the following elastic needle tip construction modes:

when the elastic needle tip does not rotate along the central line of the pressure spring, a host of the elastic needle tip sliding along the track surface is directly fixed on the support bottom of the movable support, and a host of the elastic needle tip rolling along the track surface is indirectly fixed on the support bottom of the movable support through a bearing medium; the bearing medium comprises a bearing and a bearing seat, or a bearing shaft and a bearing shaft seat, or a roller shaft and a roller shaft seat, and comprises or does not comprise a thrust bearing or an axial bearing rolling element; the bearing seat or the bearing shaft seat and the roller shaft seat are direct bearing media associated with the host and the support bottom of the movable support, the bearing or the bearing shaft and the roller shaft are first indirect bearing media associated with the host and the support bottom of the movable support, and the thrust bearing or the axial force bearing rolling element is second indirect bearing media associated with the host and the support bottom of the movable support;

when the elastic needle tip can rotate along the central line of the pressure spring, a host of the elastic needle tip sliding along the track surface is used as a rotating slide block to directly or indirectly abut against the support bottom of the movable support, a direct bearing medium of the host of the elastic needle tip rolling along the track surface is used as the rotating slide block to directly or indirectly abut against the support bottom of the movable support, and a thrust bearing is used as an intermediate medium when the rotating slide block indirectly abuts against the support bottom of the movable support; a radial rotating shaft of the elastic needle tip or a fence with a round part is arranged, the radial rotating shaft of the elastic needle tip or the fence is fixed on the support bottom of the movable support, and the axis of the radial rotating shaft of the elastic needle tip or the fence is superposed with the central line of the pressure spring; the rotating slide block rotates around the radial rotating shaft in a sliding or rolling mode, or rotates along the inner wall of the attaching enclosing wall in a sliding or rolling mode, and a rolling medium is arranged during rolling rotation.

8. The torque suction and discharge device based on the pogo pin mechanism as claimed in claim 7, wherein the rotary slider slides or rolls around the pogo pin tip radial axis, or along the inner wall of the enclosing wall.

9. The bullet needle mechanism based torque aspirator of claim 1, wherein the types of moving contact between the stationary and movable carrier bodies include direct type, medium type and hybrid type, the hybrid type having two or three of partial direct contact, partial medium contact and partial non-contact simultaneously; wherein the content of the first and second substances,

when the movable support and the fixed support of the elastic needle are sliding pairs rotating at a certain angle, the motion contact type between the support body of the fixed support and the support body of the movable support is direct type or mixed type; the contact surface is a cylindrical surface or a symmetrical partial cylindrical surface, wherein the rotation center of the cylindrical surface is superposed with the central line of the pressure spring; the movable support slides in a piston mode in the direction of the central line of the pressure spring and can rotate along the central line of the pressure spring at a certain angle;

when the movable support and the fixed support of the elastic needle are a single moving pair, the motion contact type between the support body of the fixed support and the support body of the movable support is a direct type, a medium type or a mixed type;

for the direct type: the contact surface of the support body of the fixed support and the support body of the movable support is any other type of cylindrical surface except the cylindrical surface or an incomplete cylindrical surface with rotation limiting characteristics, and the movable support keeps single piston type sliding along the central line direction of the pressure spring;

for the medium type: the bearing body of the fixed support and the bearing body of the movable support adopt rolling elements as motion contact media, the matching surface between the bearing body of the movable support and the bearing body of the fixed support is a polygonal cylindrical surface or a cylindrical surface with other shapes, and the movable support keeps single piston type sliding along the central line direction of the pressure spring.

10. The torque suction and discharge device based on the pogo pin mechanism of claim 9, wherein when the holder body of the fixed holder and the holder body of the movable holder are all or partially in contact with each other through the motion contact medium, and the mating surface between the holder body of the movable holder and the holder body of the fixed holder is a rectangular cylindrical surface, the center line of the rectangular cylindrical surface coincides with the center line of the compression spring, two sets of parallel opposite surfaces of the rectangular cylindrical surface are respectively parallel to a plane where the pogo pin passes through the center line of the compression spring and the axis of the torque suction and discharge shaft, and a plane where the pogo pin passes through the center line of the compression spring and is perpendicular to the axis of the torque suction and discharge shaft, and the two sets of parallel opposite surfaces are respectively called a first rectangular mating surface and a second rectangular mating; the first rectangular matching opposite surfaces of the fixed support and the movable support are correspondingly divided into a left matching surface and a right matching surface, and the second rectangular matching opposite surfaces are correspondingly divided into a front matching surface and a rear matching surface; the rectangle where the first rectangle matching opposite surface and the second rectangle matching opposite surface of the movable support are located is surrounded by or surrounds the rectangle where the first rectangle matching opposite surface and the second rectangle matching opposite surface of the fixed support are located, but the opposite sides of the rectangle where the second rectangle matching opposite surface of the fixed support or the movable support is located can be overlapped or nearly overlapped;

the motion contact media are in a set, and the motion contact media are bearings, bearing shafts or rolling rods;

when the motion contact media are bearings or bearing shafts, each set of motion contact media comprises at least two groups of elements, each group of elements consists of rolling elements, supporting elements of the rolling elements and fixing elements for attaching the supporting elements to the fixed supports or the movable supports, and the axes of the rolling elements in each group are in the same plane and are parallel to each other; the surface of the rolling element directly contacts the matching surface of the fixed support or the movable support, and the supporting element of the rolling element is fixed on the matching surface of the movable support or the fixed support by the fixing element of the supporting element;

when the type of the motion contact medium is a rolling rod type, each set of motion contact medium comprises two or more rolling rods which are arranged in parallel and two connecting rods which position and combine the rolling rods together, and the central lines of the rolling rods are positioned on the same plane and are parallel to each other; only one set of motion contact medium is respectively arranged between the left and right matching surfaces of the fixed support and the movable support, or one set of motion contact medium is respectively arranged between the front, back, left and right matching surfaces of the fixed support and the movable support; and the rolling rod is clamped between the corresponding matching surfaces of the fixed support and the movable support, and the rolling rod simultaneously contacts the matching surfaces of the fixed support and the movable support.

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