CN215194408U - Clamping device - Google Patents

Abstract

The utility model provides a clamping device, includes the clamping body, connecting rod and locking Assembly, the clamping body includes the mount pad, first clamp and second clamp, locking Assembly includes first retaining member, second retaining member and triggers the piece, states first retaining member and sets up on the mount pad, and second retaining member and the mobilizable setting of trigger piece are on the connecting rod, trigger piece and second retaining member are connected, and trigger piece is used for driving the second retaining member through axial displacement and switches between retaining member and unblock position. The clamping body is connected with a locking assembly with a trigger, the trigger can drive the locking assembly to lock and unlock the second clamping body, the second clamping body cannot move in a locking state, and the second clamping body can freely move in an unlocking state; make the doctor use clamping device to carry out the clamping or when dismantling devices such as syringe pump, only need grip clamping device through one's body to trigger the piece through finger operation and just can realize the locking and the unblock of second clamp, thereby this clamping device uses conveniently, labour saving and time saving.

Description

Clamping device

Technical Field

The utility model relates to a medical treatment auxiliary device, concretely relates to clamping device for clamping medical device.

Background

In a medical site, doctors need to clamp and transport the injection pump, the infusion pump and the assembly thereof, for example, the injection pump, the infusion pump and the assembly thereof are clamped by a manually portable clamping device. According to the traditional clamping device, a doctor can clamp and disassemble the injection pump, the infusion pump and the combined part of the infusion pump and the infusion pump only by operating the clamping device with two hands, and the use process is not convenient and wastes time and labor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clamping device that single body can be operated.

In one embodiment, there is provided a clamping device comprising

The clamping body comprises an installation seat, a first clamping body and a second clamping body, the first clamping body is arranged on the installation seat, the second clamping body is movably arranged on the installation seat, and the first clamping body and the second clamping body are jointly used for clamping an object to be clamped;

the connecting rod is axially movably arranged on the mounting seat, and one end of the connecting rod is connected with the second clamp body and used for driving the second clamp body to move relative to the first clamp body;

the locking assembly comprises a first locking part, a second locking part and a triggering part, the first locking part is arranged on the mounting seat, the second locking part and the triggering part are movably arranged on the connecting rod, the triggering part is connected with the second locking part, and the triggering part is used for driving the second locking part to switch between a locking part and an unlocking position through axial movement; in the locking state, the second locking piece is connected with the first locking piece; and under the unlocking state, the second locking piece is separated from the first locking piece.

In one embodiment, the first locking member comprises an outer sleeve having internal threads, the connecting rod being threaded into the outer sleeve; the second locking piece comprises a tooth block and a first spring, a mounting groove is formed in the connecting rod, the tooth block is mounted in the mounting groove of the connecting rod through the first spring, and the first spring is used for driving the tooth block to pop out to be meshed and connected with the outer sleeve; the trigger piece is used for driving the tooth block to retract and separate from the outer sleeve.

In one embodiment, the tooth block has at least two blocks uniformly distributed along the same circumferential direction, and the first spring is connected with the tooth block and used for simultaneously driving the tooth block to pop out to be meshed with the outer sleeve.

In one embodiment, the axial two ends in the mounting groove of the connecting rod are respectively provided with a pointed cone structure and a connecting part, the tooth block is provided with a first inclined plane matched with the pointed cone structure, the tooth block is slidably connected with the pointed cone structure through the first inclined plane, the first spring is arranged along the axial direction, one end of the first spring is connected with the connecting part, the other end of the first spring is connected with all the tooth blocks, and the first spring is used for driving the tooth block to pop out along the pointed cone structure to be connected with the outer sleeve in a meshed mode.

In one embodiment, the tooth blocks are of a long strip structure, the same end of each tooth block is rotatably connected with the connecting rod, the same other end of each tooth block is a free end, the first spring is arranged in the radial direction, the first spring is connected to the surface, back to the convex teeth, of each tooth block, and the first spring is used for driving the tooth blocks to radially pop out to be meshed with the outer sleeve.

In one embodiment, the threads of the outer sleeve and the tooth block are in a right-angled trapezoid structure.

In one embodiment, the triggering member includes an inner sleeve, the inner sleeve is axially movably disposed on the connecting rod, and the inner sleeve is inserted into the outer sleeve; be equipped with on the inner skleeve the mouth of dodging that the tooth piece popped out, the tooth piece is equipped with the second inclined plane, a side edge of dodging the mouth be used for along the second inclined plane of tooth piece will the tooth piece is impressed dodge intraorally, so that the tooth piece with the outer sleeve separation.

In one embodiment, one side edge of the avoiding opening is an inclined edge matched with the second inclined surface of the tooth block.

In one embodiment, a holding handle is installed at one end, far away from the installation seat, of the connecting rod.

In one embodiment, the locking assembly further comprises a button assembly, the button assembly comprises a button, a shift lever, a rotating shaft and a second spring, the handle is provided with a through hole, and one end of the inner sleeve, which is far away from the mounting seat, extends into the through hole of the handle; the driving lever is rotatably installed in the through hole of the holding handle through the rotating shaft, the button is installed on the outermost side of the through hole of the holding handle, one end of the driving lever is connected with the button, the other end of the driving lever is connected with the inner sleeve, the button is used for driving the inner sleeve to axially move through the driving lever, two ends of the second spring are respectively connected with the holding handle and the button, and the second spring is used for driving the button, the driving lever and the inner sleeve to simultaneously reset.

In one embodiment, the shift lever is a bent structure, a bent portion of the shift lever is connected to the rotating shaft, and the button and the inner sleeve move in opposite directions.

In one embodiment, the button is eccentrically disposed with respect to the through hole of the grip, and a central axis of the button is offset toward a side contacting one end of the shift lever.

In one embodiment, the inner sleeve is provided with a toggle part extending along the radial direction, the toggle part is positioned between the outer sleeve and the holding handle, and the toggle part is used for driving the inner sleeve to move axially; and a third spring is arranged between the inner sleeve and the holding handle and is used for driving the inner sleeve to reset.

In one embodiment, the inner sleeve and the grip handle are provided with an annular guide groove and an annular projection, respectively, which is slidably connected within the annular guide groove.

In one embodiment, the second clamp body is rotatably connected to an end of the connecting rod and has a clearance axially adjustable with respect to the connecting rod.

In one embodiment, the mounting seat is provided with a linear guide rail, and the second clamp body is provided with a guide groove matched with the linear guide rail; or, a linear guide groove is formed in the mounting seat, and a protrusion matched with the linear guide groove is formed in the second clamp body.

In one embodiment, the first clamp body and the mounting seat are of an integrated structure.

According to the clamping device of the embodiment, the locking assembly with the trigger is connected to the clamping body, the trigger can drive the locking assembly to lock and unlock the second clamping body, the second clamping body cannot move in the locking state, and the second clamping body can freely move in the unlocking state; make the doctor use clamping device to carry out the clamping or when dismantling devices such as syringe pump, only need grip clamping device through one's body to trigger the piece through finger operation and just can realize the locking and the unblock of second clamp, thereby this clamping device uses conveniently, labour saving and time saving.

Drawings

FIG. 1 is a schematic view of a clamping device according to an embodiment;

FIG. 2 is an axial cross-sectional view of a clamping device in one embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of a partially exploded structure of a clamping device according to an embodiment;

FIG. 5 is an enlarged view of a portion of FIG. 2;

FIG. 6 is a schematic view showing the structure of a clamping device according to an embodiment;

FIG. 7 is an axial cross-sectional view of a rack and pinion gear according to one embodiment;

FIG. 8 is a schematic view of a structure of a clamping device in one embodiment;

FIG. 9 is a partial schematic view of a clamping device according to an embodiment;

FIG. 10 is an axial cross-sectional view of a clamping device in one embodiment;

FIG. 11 is a schematic view of a second retaining member according to one embodiment.

Detailed Description

Traditional clamping device includes mount pad, fixed clamp and removes the clamp, and fixed clamp fixed mounting removes the clamp and is connected with the screw rod on the mount pad, screw rod and mount pad threaded connection, and the screw rod rotary drive removes the removal of clamp. When a doctor operates the clamping device to clamp, the doctor needs to hold the mounting seat of the clamping device with one hand and rotate the screw rod with the other hand, so that the clamping device can be moved to clamp or loosen devices such as an injector and the like relative to the fixed clamp body, and the operation is inconvenient. Moreover, the moving stroke of the moving clamp body for loosening or clamping is completely realized by the rotation of the screw rod, so that the moving clamp body always moves slowly, and therefore, long operation time is consumed.

Therefore, the applicant improves the clamping device, adds the locking device which can be used for locking the movable clamp body, the movable clamp body can move freely in the unlocking state, and the movable clamp body can be rotationally driven to clamp or unlock in the locking state, namely the moving state of the movable clamp body is divided into a free state of moving in any large stroke and a locking and unlocking state of moving in a small range, and the clamping efficiency of the clamping device is further improved. In addition, after the locking device is arranged, clamping and locking of the clamping device can be operated by one hand, and the obtained clamping device is convenient to operate.

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Referring to fig. 1 to 7, in one embodiment, a clamping device is provided, which includes a clamping body 10, a connecting rod 20 and a locking assembly 30.

Referring to fig. 1, the clamping body 10 includes an installation base 11, a first clamping body 12 and a second clamping body 13, the first clamping body 12 is a fixed clamping body, the second clamping body 13 is a movable clamping body, the first clamping body 12 and the installation base 11 are integrated, and the first clamping body 12 can also be fixed on the installation base 11 by welding or screw fixation. The second clamp body 13 is movably arranged on the mounting seat 11, the second clamp body 13 can move relative to the first clamp body 12, and then the medical device can be clamped by the cooperation of the first clamp body 12 and the second clamp body 13.

The connecting rod 20 is a rotating shaft structure, the mounting seat 11 is provided with a mounting portion 111, the mounting portion 111 and the first clamping body 12 are oppositely arranged at intervals, a mounting hole is formed in the mounting portion 111, the connecting rod 20 penetrates through the mounting hole of the mounting portion 111, and the connecting rod 20 can axially move. The second clamp body 13 is mounted on the end of the connecting rod 20, and the second clamp body 13 is located between the mounting portion 111 and the first clamp body 12, the connecting rod 20 and the second clamp body 13 move simultaneously, and the connecting rod 20 can also rotate relative to the second clamp body 13.

The linear guide rail 112 is arranged on the mounting seat 11, the linear guide rail 112 is arranged between the mounting portion 111 and the first clamp body 12, the second clamp body 13 is provided with a guide groove 131 matched with the linear guide rail 112, the second clamp body 13 is slidably clamped on the linear guide rail 112 through the guide groove 131, the cross section of the linear guide rail 112 can be square, triangular or dovetail-shaped, and the like, and the guide groove 131 has a shape complementary with the linear guide rail 112. The linear guide 112 and the guide groove 131 are matched to limit the radial degree of freedom of the second clamp 13, so that the clamping and moving stability of the second clamp 13 is improved. Or, in other embodiments, the mounting seat 11 is provided with a linear guide groove, the second clamp body 13 is provided with a protrusion adapted to the linear guide groove, and the stability of the movement of the second clamp body 13 can also be improved through the matching of the protrusion and the linear guide groove.

Referring to fig. 2 and 3, in the present embodiment, the locking assembly 30 includes a first locking member 31, a second locking member 32 and a trigger 33, the first locking member 31 includes an outer sleeve 311, an inner thread is provided in the outer sleeve 311, the second locking member 32 includes a tooth block 321 and a first spring 322, the tooth block 321 is adapted to the inner thread of the outer sleeve 311, and the outer sleeve 311 and the tooth block 321 have a tooth-like structure, such that the tooth block 321 can slide obliquely relative to the outer sleeve 311. One end of the outer sleeve 311 is fixed on one side of the mounting part 111 far away from the first clamp body 12, the connecting rod 20 is arranged in the outer sleeve 311 in a penetrating mode, and the outer sleeve 311 is used as an axial guide of the connecting rod 20 and has a locking effect.

Referring to fig. 2 and 4, the connecting rod 20 is provided with a mounting groove 21 at a portion of the outer sleeve 311, the mounting groove 21 radially penetrates through the connecting rod 20, the two tooth blocks 321 are symmetrically mounted in the mounting groove 21, tooth surfaces of the tooth blocks 321 are disposed outward, and the first spring 322 is axially mounted in the mounting groove 21. One end of the mounting groove 21, which is close to the second clamp body 13 in the axial direction, is provided with a pointed cone structure 211, one end connecting part 212 of the mounting groove 21, which is far away from the second clamp body 13 in the axial direction, the connecting part 212 is of a raised cylindrical structure, one end of the first spring 322 is sleeved on the connecting part 212, the connecting part 212 limits the first spring 322, one end of the first spring 322, which is far away from the connecting part 212, is fixedly connected with the two tooth blocks 321, the first spring 322 is always in a compression state, and the first spring 322 simultaneously provides an axial driving force for the two tooth blocks 321. One surface of the tooth block 321 facing the pointed cone structure 211 is provided with a first inclined surface 3211, the slope of the first inclined surface 3211 is the same as the slope of the surface of the pointed cone structure 211, the first inclined surface 3211 of the tooth block 321 abuts against the surface of the pointed cone structure 211, and the pointed cone structure 211 can slide along the surface of the pointed cone structure 211. Under the action of the first spring 322, the two tooth blocks 321 can slide out of the mounting groove 21 along the surface of the pointed cone structure 211 at the same time to be meshed and connected with the internal thread of the outer sleeve 311.

The pointed cone structure 211 is a cone structure, or the pointed cone structure 211 is an inclined plane structure, and the number and distribution of the inclined planes are arranged in one-to-one correspondence with the tooth blocks 321.

In other embodiments, the tooth block 321 has three or more blocks, and the plurality of tooth blocks 321 are uniformly arranged along a circumference. The plurality of tooth blocks 321 are connected with the same spring and driven by the same spring; the plurality of tooth blocks 321 may be connected to a single spring, and may be driven by a plurality of springs.

In this embodiment, the triggering member 33 includes an inner sleeve 331, the inner sleeve 331 is disposed on the connecting rod 20, the inner sleeve 331 is disposed between the connecting rod 20 and the outer sleeve 311, and the inner sleeve 331 can move and rotate axially relative to the connecting rod 20 and the outer sleeve 311. An avoiding opening 332 is formed in the middle of the inner sleeve 331, the avoiding opening 332 is arranged corresponding to the tooth block 321, and the tooth block 321 can be exposed out of the avoiding opening 332 and is meshed with the outer sleeve 311. The axial length of the avoiding opening 332 cannot be too small or too large, the axial width of the avoiding opening 332 is slightly larger than the axial length of the tooth block 321, the avoiding opening 332 with the axial width can ensure the ejection and retraction of the tooth block 321, and can also play a limiting role in the ejection and retraction of the tooth block 321, so that the tooth block 321 cannot be ejected and retracted due to the fact that the avoiding opening 332 is too small, and the tooth block 321 losing the ejection and retraction functions due to the fact that the avoiding opening 332 is too large can be avoided.

The side of the avoiding opening 332 of the inner sleeve 331 close to the second clamp body 13 is provided with an inward inclined edge, and the tooth block 321 is provided with a second inclined surface 3212 matched with the inclined edge of the avoiding opening 332. The inclined surface is arranged, so that when the inner sleeve 331 moves axially in a direction away from the second clamp body 13, the inclined edge of the avoiding opening 332 can press the tooth block 321 into the avoiding opening 332 along the second inclined surface 3212 of the tooth block 321, and further, the tooth block 321 is separated from the outer sleeve 311; when the inner sleeve 331 moves axially toward the second clip body 13, the tooth 321 is ejected out of the escape opening 332 by the first spring 322 to engage with the outer sleeve 311.

In this embodiment, locking assembly 30 further includes a button assembly 34, button assembly 34 being adapted to drive axial movement of inner sleeve 331.

A holding handle 22 is installed at one end of the connecting rod 20 far away from the second clamp 13, the holding handle 22 is made of wood or plastic material to improve holding hand feeling, and the holding handle 22 and the connecting rod 20 can also be of an integrated structure. The grip 22 is provided with an anti-slip thread on the outer surface thereof, and the grip 22 is used for driving the connecting rod 20 and the locking assembly 30 except the sleeve 311 to rotate simultaneously.

The grip 22 is provided with a through hole which penetrates axially, the through hole of the grip 22 comprises a first through hole and a second through hole which are communicated with each other, the first through hole is matched with the outer diameter of the inner sleeve 331, one end of the inner sleeve 331 is inserted into the first through hole of the grip 22, the inner diameter of the second through hole is larger than that of the first through hole, and the second through hole is used for installing the button assembly 34. A first separator 221 and a second separator 222 are further disposed in the second through hole of the grip 22, the first separator 221 and the second separator 222 are both circular sheets or circular plates, and the grip 22 is fixed to the connecting rod 20 by screws. A second divider 222 is fixedly mounted in the second through-hole of the grip 22 and divides the second through-hole into a first cavity 223 and a second cavity 224, the first divider 221 is located in the first cavity 223, one end of the inner sleeve 331 extends into the first cavity 223, the first divider 221 is fixedly mounted on the end of the inner sleeve 331, and the first divider 221 is axially movable in the first cavity 223 along with the inner sleeve 331. The first partition 221 corresponds to a piston, the second partition 222 may have a cylindrical structure, and the second partition 222 forms a second cavity 224 therein.

Referring to fig. 5, the button assembly 34 includes a button 341, a lever 342, a rotation shaft 343, and a second spring 344. A button 341 is mounted at the end of the grip 22, the button 341 having an outermost side located in the second cavity 224, the button 341 forming a closed cavity with the second cavity 224, and the button 341 being axially movable. The rotation shaft 343 is installed in the second cavity 224 in a radial direction of the second through hole. The shift lever 342 has a bent structure, the shift lever 342 has a first end and a second end, the shift lever 342 is located in the second cavity 224, the bent portion of the shift lever 342 is rotatably connected to the rotating shaft 343, the first end of the shift lever 342 abuts against the inner side of the button 341, and the pressing of the button 341 drives the shift lever 342 to rotate. The end of the inner sleeve 331 is provided with an extension 333, the extension 333 extends into the second cavity 224 along the axial direction, the extension 333 located in the second cavity 224 is provided with a bayonet, the second end of the shift lever 342 is clamped in the bayonet of the extension 333, and the shift lever 342 rotates to drive the inner sleeve 331 to move axially. A second spring 344 is positioned within the first cavity 223, the second spring 344 being mounted between the first divider 221 and the second divider 222, the second spring 344 being used to drive the inner sleeve 331 back.

The lever 342 acts as a lever, so that the button 341 applies a small force to drive the inner sleeve 331 to move axially in a reverse direction relative to the button 341, and the tooth block 321 is pressed into the escape opening 332 of the inner sleeve 331.

In one embodiment, the button 341 is disposed eccentrically with respect to the second through hole of the grip 22, and the button 341 is disposed near the first end of the lever 342, such that the button 341 can more easily drive the lever 342 to rotate, thereby reducing the driving force.

Referring to fig. 6, in an embodiment, a rack and pinion structure is also adopted instead of the shift lever 342 and the rotation shaft 343, the gear 345 is rotatably installed in the second cavity, the rack 346 is axially disposed, one end of the rack 346 is fixed on the inner side surface of the button 341, the rack 346 is engaged with the gear 345, the extension 333 is a rack or a structure with straight teeth, the extension 333 is engaged with the gear 345, the extension 333 and the rack 346 are respectively located on both sides of the gear, and the button 341 can reversely move relative to the button 341 by driving the inner sleeve 331 through the rack and pinion structure.

In one embodiment, button 341 is mounted on the circumferential side of grip 22, and inner sleeve 331 is axially movable by being driven by toggle 342 and shaft 343.

In one embodiment, the cross-sections of the connecting rod 20, inner sleeve 331 and grip 22 may be polygonal, such as square, pentagonal, etc., in addition to circular.

In this embodiment, the use method of the clamping device is described by taking clamping of the injector as an example, and the clamping steps are as follows:

s11: the doctor clamps the mounting base 11 with a single finger and presses the button 341 with a thumb or a palm; the button 341 pressed down drives the inner sleeve 331 to move axially towards the button 341 through the shift lever 342; the inclined edge of the inner sleeve 331 moving axially presses the tooth block 321 into the escape opening 332 of the inner sleeve 331, and at this time, the tooth block 321 is separated from the outer sleeve 311 and is in an unlocked state, please refer to fig. 7;

s12: placing the injector between the first clamp body 12 and the second clamp body 13, and pushing the second clamp body 13, the connecting rod 20 and the locking assembly 30 to move towards the first clamp body 12 together by a thumb or a palm, so that the first clamp body 12 and the second clamp body 13 form initial clamping on the injector; in this process, the button 341 is pressed by the thumb or palm all the time.

S13: the thumb or palm releases button 341, and button assembly 34 and inner sleeve 331 are simultaneously reset under the action of second spring 344; after the tooth block 321 loses the limit of the inner sleeve 331, the first spring 322 drives the tooth block 321 to pop out from the escape opening 332 of the inner sleeve 331 along the pointed cone structure 211, and the tooth block 321 is engaged with the internal thread of the outer sleeve 311 to form a locking state, please refer to fig. 2;

s14: the holding handle 22 is rotated by fingers, so that the tooth blocks 321 rotate relative to the outer sleeve 311, the threaded connection of the tooth blocks 321 and the outer sleeve 311 converts the rotation into the axial linear movement, finally the second clamp body 13 is driven to abut against the syringe, and the first clamp body 12 and the second clamp body 13 clamp the syringe. The clamping state is called a pre-tightening state, in which the tooth block 321 is subjected to a reverse clamping force, and under the action force, the driving force of the push button 341 cannot drive the tooth block 321 to move, so that the clamping state can avoid that the syringe is loosened due to mistaken touch of the push button 341.

If the syringe needs to be released, the grip 22 must be rotated reversely to separate the second clip 13 from the first clip 12, the syringe is partially released, the button 341 then separates the teeth 321 from the outer sleeve 311 to form an unlocked state, and finally the grip 22 is moved axially to move the second clip 13 a large distance, and the syringe can be taken out.

In the clamping device in this embodiment, since the locking assembly 30 with the trigger 33 is connected to the clamping body 10, the trigger 33 can drive the locking assembly 30 to lock and unlock the second clamping body 13, the second clamping body 13 cannot directly axially move in the locked state, and can directly axially move in the unlocked state by rotating; so that when a doctor uses the clamping device to clamp or disassemble devices such as an injection pump, the doctor only needs to grip the clamping device by one body, and the locking and unlocking of the second clamp body 12 can be realized by operating the trigger part through fingers, so that the clamping device is convenient to use, and time and labor are saved.

In one embodiment, a clamping device is provided which differs from the above embodiments in that the locking assembly is different, and which is also capable of single-body operation.

Referring to fig. 8 to 11, in the present embodiment, the clamping body 10 includes an installation base 11, a first clamping body 12 and a second clamping body 13, the first clamping body 12 is a fixed clamping body, the second clamping body 13 is a movable clamping body, the first clamping body 12 and the installation base 11 are integrated, and the first clamping body 12 can also be fixed on the installation base 11 by welding or screw fixation. The second clamp body 13 is movably arranged on the mounting seat 11, the second clamp body 13 can move relative to the first clamp body 12, and then the medical device can be clamped by the cooperation of the first clamp body 12 and the second clamp body 13.

The connecting rod 20 is a rotating shaft structure, the mounting seat 11 is provided with a mounting portion 111, the mounting portion 111 and the first clamping body 12 are oppositely arranged at intervals, a mounting hole is formed in the mounting portion 111, the connecting rod 20 penetrates through the mounting hole of the mounting portion 111, and the connecting rod 20 can axially move. The second clamp body 13 is mounted on the end of the connecting rod 20, and the second clamp body 13 is located between the mounting portion 111 and the first clamp body 12, the connecting rod 20 and the second clamp body 13 move simultaneously, and the connecting rod 20 can also rotate relative to the second clamp body 13.

The linear guide rail 112 is arranged on the mounting seat 11, the linear guide rail 112 is arranged between the mounting portion 111 and the first clamp body 12, the second clamp body 13 is provided with a guide groove 131 matched with the linear guide rail 112, the second clamp body 13 is slidably clamped on the linear guide rail 112 through the guide groove 131, the cross section of the linear guide rail 112 can be square, triangular or dovetail-shaped, and the like, and the guide groove 131 has a shape complementary with the linear guide rail 112. The linear guide 112 and the guide groove 131 are matched to limit the radial degree of freedom of the second clamp 13, so that the clamping and moving stability of the second clamp 13 is improved. Or, in other embodiments, the mounting seat 11 is provided with a linear guide groove, the second clamp body 13 is provided with a protrusion adapted to the linear guide groove, and the stability of the movement of the second clamp body 13 can also be improved through the matching of the protrusion and the linear guide groove.

The locking assembly 40 comprises a first locking member 41, a second locking member 42 and a trigger member 43, wherein the first locking member 41 comprises an outer sleeve 411, an internal thread is arranged in the outer sleeve 411, the second locking member 42 comprises a tooth block 421 and a first spring 422, the tooth block 421 is in an elongated structure, and the threads of the outer sleeve 411 and the tooth block 421 are in a right-angled trapezoid structure, so that the tooth block 421 cannot slide axially and obliquely relative to the outer sleeve 411, and the connection stability of the tooth block 421 and the outer sleeve 411 can be improved.

The tooth piece 421 has two, and two tooth pieces 421 are installed in the mounting groove 21 of connecting rod 20 symmetrically to tooth piece 421 is close to the rotatable and connecting with connecting rod 20 of the one end of second clamp 13, and the one end that tooth piece 421 keeps away from second clamp 13 is the free end. The opposite surfaces of the two tooth blocks 421 are provided with annular grooves, two ends of the first spring 422 are respectively connected in the annular grooves of the two tooth blocks 421, and the first spring 422 is used for driving the two tooth blocks 421 to eject the mounting groove 21 of the connecting rod 20 simultaneously and is connected with the outer sleeve 411.

The tooth blocks 421 can also be provided as three or other number blocks, a plurality of tooth blocks 421 are distributed on a circle, and each tooth block 421 can be driven by a separate spring.

Be equipped with the draw-in groove in connecting rod 20's mounting groove 21, the free end joint of tooth piece 421 is in the draw-in groove of mounting groove 21, and the free end of tooth piece 421 can be in draw-in groove radial movement, and the setting of draw-in groove is used for the radial displacement distance of the free end of spacing tooth piece 421 to improve the stability that tooth piece 421 removed. Or, all be equipped with the draw-in groove at the axial both ends of mounting groove 21, the both ends of tooth piece 421 are all connected in the draw-in groove through the mode of joint, and tooth piece 421 whole radial movement also can play tooth piece 421 and pop out and impress.

The trigger 43 comprises an inner sleeve 431, the inner sleeve 431 is sleeved on the connecting rod 20, the inner sleeve 431 is positioned in front of the connecting rod 20 and the outer sleeve 411, and the inner sleeve 431 can axially move relative to the connecting rod 20. The inner sleeve 431 is provided with an avoiding opening 432, and the avoiding opening 432 is used for allowing the tooth block 421 to pop out to be connected with the outer sleeve 411. The tooth block 421 has an inclined surface on the outer surface thereof, and the escape opening 432 of the inner sleeve 431 can press the tooth block 421 into the escape opening 432 by the inclined surface of the tooth block 421.

Symmetrical protruding parts 433 are arranged on the axial edge of the avoiding opening 432, inclined surfaces for the tooth blocks 421 to slide up and down are further arranged on the protruding parts 433, and the protruding parts 433 are used for supporting the tooth blocks 421, so that the connection stability of the tooth blocks 421 and the outer sleeve 411 can be improved.

In this embodiment, two symmetrical and radially extending toggle portions 434 are disposed at an end of the inner sleeve 431 away from the second clip body 13, and the toggle portions 434 and the inner sleeve 431 are integrated, or the toggle portions 434 are fixed on the inner sleeve 431 by screws. The toggle portion 434 is an annular structure, and the toggle portion 434 is used for driving the inner sleeve 431 to axially move.

A third spring 44 is further mounted between the inner sleeve 431 and the grip 22, the third spring 44 being axially arranged, the third spring 44 being used to drive the inner sleeve 431 back to the original position.

An annular groove 435 is formed in the toggle portion 434 of the inner sleeve 431, an annular protrusion 226 is formed in the grip 22, the annular protrusion 226 is connected in the annular groove 435, and the matching of the annular protrusion 226 and the annular groove 435 plays a role in guiding, so that the moving stability of the toggle portion 434 is improved. The annular protrusion is arranged on the toggle part 434, the annular groove is arranged in the handle 22, or the annular groove and the annular protrusion are arranged on both the toggle part 434 and the handle 22, which can also play a guiding role.

In this embodiment, the use method of the clamping device is described by taking clamping of the injector as an example, and the clamping steps are as follows:

s21: the doctor holds the grip 22 with one hand and pushes the toggle part 434 with fingers; the toggle part 434 drives the inner sleeve 431 to axially move away from the second clamp 13; the tooth block 421 is pressed into the avoidance port 432 of the inner sleeve 431 by the edge of the avoidance port 432 of the axially moving inner sleeve 431, and the tooth block 321 is separated from the outer sleeve 411 and is in an unlocked state;

s12: placing the injector between the first clamp body 12 and the second clamp body 13, and pushing the second clamp body 13, the connecting rod 20 and the locking assembly 40 to move towards the first clamp body 12 together by a thumb or a palm, so that the first clamp body 12 and the second clamp body 13 form initial clamping on the injector; in this process, the finger always pushes the toggle portion 434.

S13: the finger releases the button 341, and the inner sleeve 431 is pressed to reset under the action of the third spring 44; after the tooth block 421 loses the restriction of the inner sleeve 431, the first spring 422 drives the tooth block 421 to pop out of the escape opening 432 of the inner sleeve 431, and the tooth block 421 is meshed and connected with the internal thread of the outer sleeve 411 to form a locking state, please refer to fig. 10;

s14: the gear block 421 is connected to the outer sleeve 411 through the thread by rotating the handle 22 with fingers, so that the rotation is converted into axial linear movement by the threaded connection of the gear block 421 and the outer sleeve 411, and finally the second clamp body 13 is driven to abut on the syringe, and the syringe is clamped by the first clamp body 12 and the second clamp body 13. The state is a clamping state or a pre-tightening state, the gear block 421 receives a reverse clamping force, the driving force for pushing the toggle part 434 cannot drive the gear block 421 to move under the action force, and the clamping state can prevent the syringe from being loosened due to mistaken touch of the toggle part 434.

If the syringe needs to be released, the grip 22 must be rotated reversely to separate the second clip 13 from the first clip 12, partially release the syringe, push the toggle portion 434 to separate the tooth 421 from the outer sleeve 411 to form an unlocked state, and finally move the grip 22 axially to move the second clip 13 a large distance, at which time the syringe can be removed.

In one embodiment, the button assembly 34 may also be coupled to the outer sleeve 411, and the button assembly 34 may also be configured to drive the outer sleeve 411 to move axially.

In one embodiment, the toggle inner sleeve 431 and the third spring 44 form a driving structure to replace the button assembly 34 and the inner sleeve 331, and the toggle inner sleeve 431 can also drive the tooth block 321 and the outer sleeve 311 to be connected and disconnected.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims (17)

1. A clamping device is characterized by comprising

The clamping body comprises an installation seat, a first clamping body and a second clamping body, the first clamping body is arranged on the installation seat, the second clamping body is movably arranged on the installation seat, and the first clamping body and the second clamping body are jointly used for clamping an object to be clamped;

the connecting rod is axially movably arranged on the mounting seat, and one end of the connecting rod is connected with the second clamp body and used for driving the second clamp body to move relative to the first clamp body;

the locking assembly comprises a first locking part, a second locking part and a triggering part, the first locking part is arranged on the mounting seat, the second locking part and the triggering part are movably arranged on the connecting rod, the triggering part is connected with the second locking part, and the triggering part is used for driving the second locking part to be switched between a locking state and an unlocking state through axial movement; in the locking state, the second locking piece is connected with the first locking piece; and under the unlocking state, the second locking piece is separated from the first locking piece.

2. The clamping device as claimed in claim 1, wherein said first retaining member includes an outer sleeve having internal threads, said connecting rod being disposed through said outer sleeve; the second locking piece comprises a tooth block and a first spring, a mounting groove is formed in the connecting rod, the tooth block is mounted in the mounting groove of the connecting rod through the first spring, and the first spring is used for driving the tooth block to pop out to be meshed and connected with the outer sleeve; the trigger piece is used for driving the tooth block to retract and separate from the outer sleeve.

3. The clamping device as claimed in claim 2, wherein said tooth blocks have at least two blocks uniformly distributed along a same circumferential direction, said first spring being connected to said tooth blocks, said first spring being adapted to simultaneously drive said tooth blocks to eject out of engagement with said outer sleeve.

4. The clamping device as claimed in claim 3, wherein the axial two ends in the mounting groove of the connecting rod are respectively provided with a pointed cone structure and a connecting portion, the tooth block is provided with a first inclined surface matched with the pointed cone structure, the tooth block is slidably connected with the pointed cone structure through the first inclined surface, the first spring is arranged along the axial direction, one end of the first spring is connected with the connecting portion, the other end of the first spring is connected with all the tooth blocks, and the first spring is used for driving the tooth blocks to pop out along the pointed cone structure to be connected with the outer sleeve in a meshing manner.

5. The clamping device as claimed in claim 3, wherein said tooth blocks are of an elongated configuration, the same end of all said tooth blocks is pivotally connected to said connecting rod, the same other end of all said tooth blocks is free, said first spring is radially disposed, said first spring is connected to a face of said tooth blocks facing away from said spur teeth, said first spring is adapted to drive said tooth blocks to radially spring out into engagement with said outer sleeve.

6. The clamping device as claimed in claim 5, wherein the threads of the outer sleeve and the tooth block are each of right-angled trapezoidal configuration.

7. The clamping device as claimed in claim 4 or 5, characterized in that the triggering member comprises an inner sleeve which is axially displaceably provided on the connecting rod and which is arranged through the outer sleeve; be equipped with on the inner skleeve the mouth of dodging that the tooth piece popped out, the tooth piece is equipped with the second inclined plane, a side edge of dodging the mouth be used for along the second inclined plane of tooth piece will the tooth piece is impressed dodge intraorally, so that the tooth piece with the outer sleeve separation.

8. The clamping device as claimed in claim 7, wherein one side edge of said escape opening is provided as an inclined edge adapted to the second inclined face of said tooth block.

9. The clamping device as claimed in claim 7, wherein a grip is mounted to an end of said connecting rod remote from said mounting seat.

10. The clamping device as claimed in claim 9, wherein said locking assembly further comprises a button assembly, said button assembly including a button, a lever, a shaft and a second spring, said grip having a through hole, an end of said inner sleeve remote from said mounting base extending into said through hole of said grip; the driving lever is rotatably installed in the through hole of the holding handle through the rotating shaft, the button is installed on the outermost side of the through hole of the holding handle, one end of the driving lever is connected with the button, the other end of the driving lever is connected with the inner sleeve, the button is used for driving the inner sleeve to axially move through the driving lever, two ends of the second spring are respectively connected with the holding handle and the button, and the second spring is used for driving the button, the driving lever and the inner sleeve to simultaneously reset.

11. The clamping device as claimed in claim 10, wherein said lever is a bent structure, a bent portion of said lever is connected to said rotating shaft, and said button and said inner sleeve are moved in opposite directions.

12. The clamping device as claimed in claim 11, wherein said push button is eccentrically disposed with respect to said through hole of said grip, and a central axis of said push button is offset toward a side contacting an end of said shift lever.

13. The clamping device as claimed in claim 9, wherein said inner sleeve has a radially extending toggle portion located between said outer sleeve and said grip, said toggle portion for moving said inner sleeve axially; and a third spring is arranged between the inner sleeve and the holding handle and is used for driving the inner sleeve to reset.

14. The gripping apparatus of claim 9, wherein the inner sleeve and the grip are provided with an annular channel and an annular projection, respectively, the annular projection being slidably coupled within the annular channel.

15. The clamping device as claimed in claim 1, wherein said second clamp body is rotatably connected to an end of said connecting rod and has a clearance axially adjustable with respect to said connecting rod.

16. The clamping device as claimed in claim 1, wherein the mounting base is provided with a linear guide rail, and the second clamp body is provided with a guide groove matched with the linear guide rail; or, a linear guide groove is formed in the mounting seat, and a protrusion matched with the linear guide groove is formed in the second clamp body.

17. The clamping device as claimed in claim 1, wherein said first clamp body and said mounting base are of a unitary construction.

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