CN208967341U - A kind of rack joint - Google Patents

Abstract

The utility model provides a kind of rack joint comprising first mechanical arm, second mechanical arm and knob control module, first mechanical arm, second mechanical arm and gear set module connect, and knob control module is connect with gear set module；Knob control module includes knob, rotation axis and transmission nut, and knob and knob axis connection, rotation axis are connected through a screw thread with transmission nut；Gear set module includes ratchet, gear shaft, shaft with gear set and gear set axle sleeve, ratchet and gear axis connection, first mechanical arm and gear axis connection；Second mechanical arm and shaft with gear set connect, and ratchet and shaft with gear set cooperate, and shaft with gear set passes through elastic component and gear axis connection；Transmission nut and gear axis connection.Using the technical solution of the utility model, rack joint by knob transmission nut it is up and down to gear set apply, remove pressure, make gear set it is ratcheting, loosen state switching, reach rack joint unidirectionally adjust, step-less adjustment pattern switching.

Description

A kind of rack joint

Technical field

The utility model relates to a kind of bracket more particularly to a kind of rack joints.

Background technique

With medical instrument fast development, desk-top therapeutic equipment constantly updates iteration, a large amount for the treatment of times five minutes with On treatment project will all configure auxiliary stand, liberate treatment personnel, while also making therapentic part more acurrate.Currently on the market Medical stand is divided into three kinds, and knob, push type, floating type, knob bracket rely on frictional force constitutional balance, push type bracket It is balanced by gear structure, hovering bracket is balanced by gas spring, mechanical spring.Wherein knob bracket due to frictional force with apply The operating force for being added to knob is positively correlated, and operation is laborious, while where it is reliable behavior that operator if not knowing that knob rotates to, Push type bracket needs to press always triggering knob, floating type bracket when adjusting counterclockwise due to can only unidirectionally adjust clockwise Gas spring, mechanical spring all have that the service life is no more than 10,000 times.

Utility model content

In view of the above technical problems, the utility model discloses a kind of rack joints, by knob, realize that bracket closes The unidirectional adjusting of section, step-less adjustment pattern switching.

In this regard, the technical solution of the utility model are as follows:

A kind of rack joint comprising first mechanical arm, second mechanical arm and knob control module, described first is mechanical Arm, second mechanical arm are connect with gear set module respectively, and the knob control module is connect with gear set module；The knob control Molding block includes knob, rotation axis and transmission nut；The knob and knob axis connection, the rotation axis and transmission nut connect It connects；

The gear set module include ratchet, gear shaft, shaft with gear set and gear set axle sleeve, the ratchet with Gear axis connection, the gear shaft are located at the outside of rotation axis, and the shaft with gear set is located on the outside of gear shaft, and described first is mechanical Arm and gear axis connection, the second mechanical arm is by gear set axle sleeve and shaft with gear set connection, the ratchet and with tooth Axle sleeve cooperation, the shaft with gear set pass through elastic component and gear axis connection；The transmission nut and gear axis connection.Further , the second mechanical arm is connected by gear set axle sleeve and shaft with gear set, and is fixed with M25 retaining ring.

Further, the gear shaft is connect with knob.

It adopts this technical solution, is rotated by knob and drive transmission nut rotation, pass through matching for transmission nut and gear shaft It closes, forms screw rod transmission mode, band movable gear shaft moves up and down, and passes through the ratchet and shaft with gear set with gear axis connection Matching relationship locks or unlocks first mechanical arm, second mechanical arm one-directional rotation to realize；In addition, working as shaft with gear set When rotational driving gear axis, ratchet are mobile to the direction that is out of gear, elasticity of compression component, when shaft with gear set rotated end face When the highest point of tooth, elastic component band movable gear shaft, ratchet reset, and reach initial one-way locking state.

Further, the tooth when knob is moved up by transmission nut band movable gear shaft, with gear axis connection Wheel moves up, so that ratchet is engaged with shaft with gear set, second mechanical arm may only be one-directionally rotated.Work as knob When being moved down by transmission nut band movable gear shaft, the ratchet and shaft with gear set are disengaged, and second mechanical arm can at this time Regulative mode is step-less adjustment, can it is suitable, be adjusted to intended-location counterclockwise.

The ratchet and shaft with gear are covered as a further improvement of the utility model, is cooperated by end-tooth.

The rack joint includes knob outrigger shaft as a further improvement of the utility model, the knob outrigger shaft With knob axis connection, and be located at shaft with gear set middle part；The bottom of the knob outrigger shaft is simultaneously equipped in the outside for being located at gear Locking member.

The gear shaft is fixedly connected with gear by machine screw mech scr as a further improvement of the utility model, described Gear shaft is connect by first mechanical arm moulding with first mechanical arm；The shaft with gear set passes through gear set axle sleeve, locking screw Mother is fixedly connected with second mechanical arm.Wherein, the first mechanical arm moulding plays connection function.Further, described One mechanical arm moulding includes the handware with limit.

The first mechanical arm includes the portion first mechanical arm A interconnected as a further improvement of the utility model, With the first portion Machinery Ministry B, the second mechanical arm includes the portion second mechanical arm A and the portion second mechanical arm B, the second mechanical arm It is connect after the portion A and the connection of the portion second mechanical arm B with gear set axle sleeve, the second mechanical arm is located at the portion first mechanical arm A and the Between one portion Machinery Ministry B.

The outside of the gear shaft is equipped with gear shaft boss, the shaft with gear as a further improvement of the utility model, It covers inner wall and is equipped with axle sleeve boss, the gear shaft boss, axle sleeve boss form the space for accommodating elastic component between axial direction.

The gear shaft is equipped with the transmission nut limit of limitation transmission nut rotation as a further improvement of the utility model, Position guide groove, the transmission nut are connect with transmission nut limit guide groove.

Under module lock state, do not influenced by second mechanical arm is movable, reaching unidirectionally can adjust under lock state；Work as rotation When button rotates to unlocked state, transmission nut because on gear shaft transmission nut limit guide groove influence, rotary motion is changed to directly Line movement, the direction movement that compressing gear axial direction ratchet pine moves back reach two-way adjustable；Knob rotates to lock state When, transmission nut returns to initial position fix step, and gear spring is completed to reset, and mechanical arm switches back into unidirectional adjustable state.

Knob gasket, the knob are equipped between the knob and gear shaft as a further improvement of the utility model, Gasket and knob axis connection, the end face of the knob gasket, which is equipped with, respectively corresponds two concave points that knob starts and terminates, described Concave point is connect by plunger spring bead with knob.

Plunger spring bead is connect with knob as a further improvement of the utility model, and knob gasket is solid by screw It is scheduled on one moulding of mechanical arm, knob passes through knob gasket and mechanical arm gear set by knob outrigger shaft, is secured with nuts On the nut support part of mechanical arm.

The rotation axis includes that the connection connecting positioned at upper end with knob is put down as a further improvement of the utility model, Platform, the gear shaft are equipped with fixing lug boss, and the knob gasket is between connecting platform, fixing lug boss, the plunger spring Bead passes through connecting platform and connect with knob.Start and terminate two positions in knob respectively, the plunger spring bead of installation, Concave point → plane → concave point is realized in transmission process, realizes tactile, the audio feedback of gear folding position switching.

The gear, shaft with gear set are separately fixed at the both ends of rack joint as a further improvement of the utility model,.

The first mechanical arm passes through retaining ring and gear axis connection as a further improvement of the utility model,.

The rotation axis is with transmission nut by being threadedly engaged as a further improvement of the utility model,.

The rotation axis and transmission nut are cooperated by trapezoidal thread as a further improvement of the utility model,.Wherein, Screw thread between the rotation axis and transmission nut can not be trapezoidal thread, and screw pitch is bigger than routine.

Preferably, the screw pitch of the screw thread is M8 thread pitch.Preferably, the screw pitch of the screw thread is 1 ~ 3mm.

The screw pitch of the trapezoidal thread is 1 ~ 3mm as a further improvement of the utility model,.

Compared with prior art, the utility model has the following beneficial effects:

Using the technical solution of the utility model, rack joint applies gear set by the way that knob transmission nut is up and down Add, remove pressure, make gear set it is ratcheting, loosen state switching, reach that rack joint is unidirectionally adjusted, step-less adjustment mode is cut It changes；Plunger spring bead is set in knob simultaneously, for the instruction in two states.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of rack joint of the utility model.

Fig. 2 is a kind of decomposition texture schematic diagram of rack joint of the utility model.

Fig. 3 is the structure chart of the knob control module of the utility model.

Fig. 4 is the sectional view of the knob control module of the utility model.

Fig. 5 is the structure chart of the gear module of the utility model.

Fig. 6 is the sectional view of the gear module of the utility model.

Fig. 7 is the top view of the gear shaft of the utility model.

Fig. 8 is surface chart when a kind of knob of rack joint of the utility model is in the lock state.

Fig. 9 is schematic cross-section when a kind of knob of rack joint of the utility model is in the lock state.

Figure 10 is surface chart when a kind of knob of rack joint of the utility model is in the unlocked state.

Figure 11 is schematic cross-section when a kind of knob of rack joint of the utility model is in the unlocked state.

Appended drawing reference includes: 1- first mechanical arm, 2- second mechanical arm, 3- knob, 4- rotation axis, 5- transmission nut, 6- Knob outrigger shaft, 7- locking member, 8- machine screw mech scr, 9- first mechanical arm moulding, the portion 11- first mechanical arm A, 12- first The portion Machinery Ministry B, the portion 13- second mechanical arm A, the portion 14- second mechanical arm B, 15- knob gasket, 16- plunger spring bead, 17- connect Connect platform, 18- retaining ring, 19- knob limited block；21- ratchet, 22- gear shaft, 23- shaft with gear set, 24- gear set Axle sleeve, 25- elastic component, 26- gear shaft boss, 27- axle sleeve boss, 28- transmission nut limit guide groove.

Specific embodiment

With reference to the accompanying drawing, the preferably embodiment of the utility model is described in further detail.

As shown in Fig. 1 ~ Figure 11, a kind of rack joint comprising first mechanical arm 1, second mechanical arm 2 and knob 3 control Module, the first mechanical arm 1, second mechanical arm 2 are connect with gear set module respectively, 3 control module of knob and gear Group module connection；3 control module of knob includes knob 3, rotation axis 4 and transmission nut 5；The knob 3 connects with rotation axis 4 It connects, the rotation axis 4 is connected through a screw thread with transmission nut 5；The gear set module include ratchet 21, gear shaft 22, Shaft with gear set 23 and gear set axle sleeve 24, the ratchet 21 are connect with gear shaft 22, and the shaft with gear set 23 is located at knob The outside of axis 4, shaft with gear set 23 are located at 22 outside of gear shaft, and the first mechanical arm 1 is connect with gear shaft 22, and described the Two mechanical arms 2 are connect by gear set axle sleeve 24 with shaft with gear set 23, and the ratchet 21 passes through end face with shaft with gear set 23 Tooth cooperation, the shaft with gear set 23 are connect by elastic component 25 with gear shaft 22；The transmission nut 5 connects with gear shaft 22 It connects.Wherein, the elastic component 25 is preferably spring.The gear shaft 22 is connect with knob 3.

Further, the rack joint includes knob outrigger shaft 6, and the knob outrigger shaft 6 is connect with rotation axis 4, and Positioned at the middle part of shaft with gear set 23；The bottom of the knob outrigger shaft 6 is simultaneously equipped with locking member 7 in the outside for being located at gear.Institute Stating locking member 7 is locking nut, and the knob outrigger shaft 6 is locked by locking nut.

Further, the gear shaft 22 is fixedly connected with gear by machine screw mech scr 8, and the gear shaft 22 passes through first Mechanical arm moulding 9 is connect with first mechanical arm 1；The shaft with gear set 23 passes through gear set axle sleeve 24, locking nut and second Mechanical arm 2 is fixedly connected.The first mechanical arm 1 is connect by retaining ring 18 with gear shaft 22.The rotation axis 4 and transmission spiral shell Mother 5 is cooperated by trapezoidal thread.Further, the screw pitch of the trapezoidal thread is 1 ~ 3mm.Preferably, the trapezoidal thread Screw pitch is 2mm.

Further, the outside of the gear shaft 22 is equipped with gear shaft boss 26, and the shaft with gear covers 23 inner walls and is equipped with axis Boss 27 is covered, the gear shaft boss 26, axle sleeve boss 27 form the space for accommodating elastic component 25 between axial direction.The tooth Wheel shaft 22 is equipped with the transmission nut limit guide groove 28 that limitation transmission nut 5 rotates, and the transmission nut 5 is led with transmission nut limit Slot 28 connects.Under module lock state, do not influenced by second mechanical arm 2 is movable, reaching unidirectionally can adjust under lock state；When When knob 3 rotates to unlocked state, influence of the transmission nut 5 because of transmission nut limit guide groove 28 on gear shaft 22, rotation fortune Dynamic to be changed to move along a straight line, compressing gear shaft 22 is moved to the direction that 21 pine of ratchet moves back, and reaches two-way adjustable；Knob 3 revolves When going to lock state, transmission nut 5 returns to initial position fix step, and gear spring is completed to reset, and mechanical arm switches receipt To adjustable state.

Further, knob gasket 15, the knob gasket 15 and rotation axis are equipped between the knob 3 and gear shaft 22 4 connections, the end face of the knob gasket 15, which is equipped with, respectively corresponds two concave points that knob 3 starts and terminates, and the concave point passes through Plunger spring bead 16 is connect with knob 3.The knob is equipped with knob limited block 19.Further, as shown in figures 1 and 3, Plunger spring bead 16 is connect with knob 3, and knob gasket 15 is fixed by screws on first mechanical arm moulding 9, and knob 3 is logical Rotation axis 4, knob outrigger shaft 6 are crossed across knob gasket 15 and mechanical arm gear set, the supporting element in mechanical arm is secured with nuts On.

Further, the rotation axis 4 includes the connecting platform 17 connecting positioned at upper end with knob 3, the gear shaft 22 Equipped with gear shaft boss 26, the knob gasket 15 is between connecting platform 17, gear shaft boss 26, the plunger spring glass Pearl 16 passes through connecting platform 17 and connect with knob 3.Start and terminate two positions, the plunger spring glass of installation in knob 3 respectively Pearl 16 realizes concave point → plane → concave point in transmission process, realizes tactile, the audio feedback of gear folding position switching.

The gear, shaft with gear set 23 are separately fixed at the both ends of rack joint.The first mechanical arm 1 includes mutually interconnecting The portion first mechanical arm A 11 and the portion first mechanical arm B 12 connect, the second mechanical arm 2 include the portion second mechanical arm A 13 and second The portion mechanical arm B 14, the portion the second mechanical arm A 13 and the portion second mechanical arm B 14 are connect after connecting with gear set axle sleeve 24, described Second mechanical arm 2 is located between the portion first mechanical arm A 11 and the portion first mechanical arm B 12.First mechanical arm 1, second mechanical arm 2 it Between be equipped with gasket.The second mechanical arm 2 is connect by gear set with gear set axle sleeve 24, realizes rotation.

It adopts this technical solution, 3 surface of knob is equipped with the mark of corresponding locking and unlocking, controls gear teeth by knob 3 Conjunction state switching.When joint is in " lock " state, bracket is adjustable clockwise, counterclockwise protection locking, joint Bracket is infinitely adjusted when in " Unlock " state, can arbitrarily be adjusted to designated position." lock " " Unlock " state is in addition to view Feel the tactile feedback of the outer also spring positioning pearl of identification.When knob 3 is rotated from " Unlock " to " lock " state, knob 3 is logical It crosses transmission nut 5 to move up with movable gear shaft 22, the gear connecting with gear shaft 22 moves up, so that ratchet 21 cooperate with shaft with gear set 23, and mechanical arm may only one-directionally rotate, and be unable to Double-directional rotary.When knob 3 rotation from " lock " to When " Unlock " state, knob 3 is moved down by transmission nut 5 with movable gear shaft 22, the ratchet 21 and shaft with gear Set 23 disengage, at this time mechanical arm adjustable way be step-less adjustment, can it is suitable, be adjusted to intended-location counterclockwise.

The specific embodiment of the above is the better embodiment of the utility model, and it is practical new not to limit this with this The specific implementation range of type, the scope of the utility model includes being not limited to present embodiment, all according to the utility model Shape, structure made by equivalence changes it is within the protection scope of the present utility model.

Claims (10)

1. a kind of rack joint, it is characterised in that: it includes first mechanical arm, second mechanical arm and knob control module, described First mechanical arm, second mechanical arm are connect with gear set module respectively, and the knob control module is connect with gear set module；Institute Stating knob control module includes knob, rotation axis and transmission nut, the knob and knob axis connection, the rotation axis and transmission Nut connection；

The gear set module includes ratchet, gear shaft, shaft with gear set and gear set axle sleeve, the ratchet and gear Axis connection, the gear shaft are located at the outside of rotation axis, and the shaft with gear set is located on the outside of gear shaft, the first mechanical arm with Gear axis connection；The second mechanical arm and shaft with gear set connect, and the ratchet and shaft with gear set cooperate, the shaft with gear Set passes through elastic component and gear axis connection；The transmission nut and gear axis connection.

2. rack joint according to claim 1, it is characterised in that: the ratchet and shaft with gear set pass through end-tooth Cooperation.

3. rack joint according to claim 1, it is characterised in that: it includes knob outrigger shaft, the knob outrigger shaft With knob axis connection, and be located at shaft with gear set middle part；The bottom of the knob outrigger shaft is simultaneously equipped in the outside for being located at gear Locking member.

4. rack joint according to claim 1, it is characterised in that: the gear shaft and gear are fixed by machine screw mech scr Connection, the gear shaft are connect by first mechanical arm moulding with first mechanical arm；The shaft with gear set passes through gear set axis Set, locking nut are fixedly connected with second mechanical arm.

5. rack joint according to claim 4, it is characterised in that: the first mechanical arm includes interconnected first The portion mechanical arm A and the first portion Machinery Ministry B, the second mechanical arm include the portion second mechanical arm A and the portion second mechanical arm B, described It is connect after the portion second mechanical arm A and the connection of the portion second mechanical arm B with gear set axle sleeve, it is mechanical that the second mechanical arm is located at first Between the portion arm A and the first portion Machinery Ministry B.

6. rack joint according to claim 1, it is characterised in that: the outside of the gear shaft is equipped with gear shaft boss, The shaft with gear set inner wall is equipped with axle sleeve boss, and the gear shaft boss, axle sleeve boss form the elastic structure of receiving between axial direction The space of part.

7. rack joint according to claim 6, it is characterised in that: the gear shaft is equipped with limitation transmission nut rotation Transmission nut limit guide groove, the transmission nut are connect with transmission nut limit guide groove.

8. rack joint described in any one according to claim 1 ~ 7, it is characterised in that: set between the knob and gear shaft Have a knob gasket, the knob gasket and knob axis connection, the end face of the knob gasket be equipped with respectively correspond knob start and Two concave points terminated, the concave point are connect by plunger spring bead with knob.

9. rack joint according to claim 8, it is characterised in that: the rotation axis includes being located at upper end to connect with knob Connecting platform, the gear shaft is equipped with fixing lug boss, and the knob gasket is described between connecting platform, fixing lug boss Plunger spring bead passes through connecting platform and connect with knob.

10. rack joint according to claim 1, it is characterised in that: the rotation axis and transmission nut pass through trapezoidal spiral shell Line cooperation.