阅读说明：本技术 一种双极组织闭合器联动动力组件 (Bipolar tissue closer linkage power component ) 是由 张强 于 2020-12-14 设计创作，主要内容包括：本发明涉及闭合器技术领域,尤其涉及一种双极组织闭合器联动动力组件,包括：推拉杆体；第一动力装置,带动推拉杆体直线运动；切割刀片,设置于两镊体之间；第二动力装置,带动切割刀片直线运动；第二动力装置设置于第一动力装置靠近镊体一侧,在第一工作位置两镊体张开,且切割刀片相对于镊体回缩,在第二工作位置,第一动力装置相对于远离处于第一工作位置的第二动力装置,且两镊体闭合,在第三工作位置,第二动力装置相对靠近处于第二工作位置的第一动力装置,且带动切割刀片相对于镊体伸出。通过本发明的技术方案,使得切割刀片和镊体运动动力部分的合理更加布局,降低了整个装置的体积和重量,从而有效减少握持的疲劳度。(The invention relates to the technical field of closers, in particular to a linkage power assembly of a bipolar tissue closer, which comprises: a push-pull rod body; the first power device drives the push-pull rod body to move linearly; the cutting blade is arranged between the two forceps bodies; the second power device drives the cutting blade to move linearly; the second power device is arranged on one side, close to the tweezer body, of the first power device, the two tweezer bodies are opened in the first working position, the cutting blade retracts relative to the tweezer body, the first power device is far away from the second power device in the first working position in the second working position, the two tweezer bodies are closed, and the second power device is close to the first power device in the second working position relatively in the third working position and drives the cutting blade to extend relative to the tweezer body. Through the technical scheme of the invention, the cutting blade and the movement power part of the forceps body are reasonable and more distributed, and the volume and the weight of the whole device are reduced, so that the holding fatigue is effectively reduced.)

1. A bipolar tissue closure linkage power assembly, comprising:

the push-pull rod body (1) provides linear power for opening and closing the two forceps bodies (2) of the closer;

the first power device (3) drives the push-pull rod body (1) to move linearly;

the cutting blade (4) is arranged between the two forceps bodies (2) and is used for cutting the clamped tissue;

the second power device (5) drives the cutting blade (4) to move linearly;

the second power device (5) is arranged on one side, close to the tweezer body (2), of the first power device (3), the second power device (5) and the first power device (3) comprise a first working position which is arranged in an attaching mode, in the first working position, the tweezer body (2) is opened, and the cutting blade (4) retracts relative to the tweezer body (2);

the first power device (3) also comprises a second working position, in the second working position, the first power device (3) is far away from the second power device (5) in the first working position, and the two forceps bodies (2) are closed;

the second power device (5) also comprises a third working position, in which the second power device (5) is relatively close to the first power device (3) in the second working position and drives the cutting blade (4) to extend relative to the forceps body (2).

2. The bipolar tissue closer linkage power assembly according to claim 1, wherein the first power device (3) comprises:

the power supply assembly (31) drives the push-pull rod body (1) to move linearly under the force application of an operator, so that the two forceps bodies (2) are opened and closed;

a stop lever body (32) which stops the second power device (5) to limit the operation thereof when the operator does not operate the second power device, and releases the stop of the second power device (5) after the operator operates the power supply assembly (31) in place;

the power supply device is characterized in that one end of the stopping rod body (32) is rotatably connected with the power supply assembly (31), a guide rod (32 a) is arranged in the middle of the stopping rod body (32), the power supply assembly (31) drives the stopping rod body (32) to move, the guide rod (32 a) moves along the guide groove in an adaptive mode, and the other end of the stopping rod body (32) stops the second power device (5).

3. The bipolar tissue closer linkage power assembly according to claim 1 or 2, wherein the power supply assembly (31) comprises:

the holding connecting rod comprises a first rotating shaft body (311), a stress section (312) and a connecting section (313), wherein the stress section (312) and the connecting section (313) are respectively arranged at two sides of the first rotating shaft body (311), an included angle between the stress section and the connecting section is smaller than 90 degrees, and the first rotating shaft body (311) rotates around a fixed axis;

the force transmission rod body comprises a rotating connecting end (314) and a linear motion end (315), the rotating connecting end (314) is rotatably connected with the tail end of the connecting section (313), and the linear motion end (315) moves along the linear motion direction of the push-pull rod body (1) under the limitation of the linear guide groove;

the linear motion end (315) is rotatably connected with the end part of the push-pull rod body (1).

4. The bipolar tissue closer linkage power assembly according to claim 1, wherein the second power device (5) comprises a stopper (51), a slide (52), a connecting rod (53), a force application rod (54), a return spring (55) and a moving block (56);

the reset spring (55) is sleeved on the periphery of the push-pull rod body (1), one end of the reset spring is blocked by the stop block (51), and the stop block (51) is fixedly arranged;

the slideway (52) is fixedly arranged, one end of the connecting rod (53) is linearly guided, the guiding direction is parallel to the length direction of the push-pull rod body (1), the other end of the connecting rod (53) is rotatably connected with one end of the force application rod (54), the middle part of the force application rod (54) is rotatably arranged through a fixed axis, and the other end of the force application rod is used for an operator to apply force; the moving block (56) is rotatably connected with a linear motion end (315) of the connecting rod (53) and synchronously linearly moves with the linear motion end (315), and the moving block (56) is sleeved on the periphery of the push-pull rod body (1) and is attached to the other end of the return spring (55);

the stress ends of the slide way (52) and the force application rod (54) are respectively positioned at two sides of the push-pull rod body (1), and the moving block (56) drives the cutting blade (4) to do linear motion.

5. The bipolar tissue closer linkage power assembly according to claim 3, wherein a guide member (6) is arranged at the end of the push-pull rod body (1), an annular groove (61) is arranged on the guide member (6) around the axis of the push-pull rod body (1), an outlet end inserted into the annular groove (61) is arranged on the linear motion end (315), and the outlet end is attached to two side walls of the annular groove (61).

6. The bipolar tissue closer linkage power assembly according to claim 3, wherein the force transmission rod body is symmetrical about a plane, and the symmetry plane coincides with the axis of the push-pull rod body (1), and the projection of the force transmission rod body on the symmetry plane is V-shaped.

7. The bipolar tissue closer linkage power assembly according to claim 6, wherein the first rotating shaft body (311) and the connecting section (313) are symmetrical about a plane, and the symmetry plane coincides with the push-pull rod body (1) axis.

8. The bipolar tissue closer linkage power assembly according to claim 4, wherein the connecting side of the force application rod (54) and the connecting rod (53) comprises two parts symmetrically arranged about the connecting rod (53), both parts are rotatably connected with the connecting rod (53), the connecting ends of the two symmetrically arranged parts are positioned at the side of the push-pull rod body (1) arranged at the rotating shaft of the force application rod (54), and the push-pull rod body (1) is arranged between the two symmetrically arranged parts.

9. The bipolar tissue closer linkage power assembly according to claim 8, wherein a sliding groove (52 a) with a convex cross section is formed in the sliding channel (52), the connecting rod (53) is partially inserted into the sliding groove (52 a), two guide rods (32 a) are symmetrically arranged on the inserted part, and the two guide rods (32 a) are respectively inserted into two sides of the sliding groove (52 a).

10. The bipolar tissue closer linkage power assembly according to claim 1, further provided with a locking device (7), the locking device (7) comprising:

the middle part of the lock rod (71) is fixedly connected with the power supply component (31), and two ends of the lock rod are freely arranged;

the locking block (72) moves along a straight line and comprises a left group of extrusion guide surfaces (72 a), a right group of extrusion guide surfaces (72 b) and a concave locking groove (72 b) which are sequentially connected, and a connecting surface (72 c); the two ends of the lock rod (71) extrude the extrusion guide surface (72 a) under the force application of an operator, and enter the concave locking groove (72 b) from top to bottom along the extrusion guide surface (72 a), and when the operator applies force for the second time, the lock rod (71) leaves the concave locking groove (72 b) from top to bottom and returns through the lower part of the connecting surface (72 c);

and the extrusion spring (73) is arranged at the bottom of the locking block (72) and used for providing a resetting force for the locking block (72).

Technical Field

The invention relates to the technical field of closers, in particular to a linkage power assembly of a bipolar tissue closer.

Background

The bipolar tissue closer consists of a double-petal forceps body and an electrode seat, the tail ends of the double-petal forceps body are respectively connected with the electrode seat, and a high-frequency input plug is arranged on the electrode seat. The bipolar tissue closer can carry out more meticulous electricity congeals hemostasis and processing to little blood vessel and other structures, and the principle is that high frequency current makes protein dissolve the degeneration, under the pressure effect of the bivalve tweezers body, makes the fusing of vascular wall form with the zona pellucida that distinguishes around to produce permanent lumen closure and reach hemostasis, when the tissue accomplishes the degeneration and fuses, can the auto-power-off.

The double-petal forceps body of the existing bipolar tissue closer is provided with forceps tips, the forceps tips and the double-petal forceps body are integrally formed, an insulating layer is arranged on the outer surface of the double-petal forceps body, the forceps tip part is exposed, only current is conducted between the forceps tips, the current is conducted from one forceps tip to the other forceps tip during electric coagulation, the tissue between the two forceps tips is subjected to the action of the current, and the tissue outside the forceps tips is little or not influenced. Because the action range of the forceps is limited between two ends of the forceps, the degree of damage and the influence range to adjacent tissues are small, and the forceps are quite safe.

At present, in order to realize the multifunctionalization of the closer, a cutting blade is arranged between two forceps bodies, and after the two forceps bodies are closed, the cutting blade is pushed forwards in a manual control mode to realize cutting.

In view of the above problems, the present designer is based on the practical experience and professional knowledge of many years of engineering application of such products, and is engaged with the application of theory to actively make research and innovation, so as to create a bipolar tissue closer linkage power assembly, which is more practical.

Disclosure of Invention

The invention provides a linkage power assembly of a bipolar tissue closer, which effectively solves the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a bipolar tissue closure linkage power assembly comprising:

the push-pull rod body provides linear power for opening and closing the two forceps bodies of the closer;

the first power device drives the push-pull rod body to move linearly;

the cutting blade is arranged between the two forceps bodies and is used for cutting the clamped tissue;

the second power device drives the cutting blade to move linearly;

the second power device is arranged on one side, close to the forceps bodies, of the first power device, the second power device and the first power device comprise first working positions which are arranged in an attaching mode, in the first working positions, the two forceps bodies are unfolded, and the cutting blade retracts relative to the forceps bodies;

the first power device further comprises a second working position, in the second working position, the first power device is opposite to the second power device far away from the first working position, and the two forceps bodies are closed;

the second power device further comprises a third working position, and in the third working position, the second power device is relatively close to the first power device in the second working position and drives the cutting blade to extend relative to the forceps body.

Further, the first power unit includes:

the power supply assembly drives the push-pull rod body to move linearly under the force application of an operator, so that the two forceps bodies are opened and closed;

the stopping rod body stops the second power device to limit the operation of the second power device when an operator does not operate the second power device, and the stopping rod body releases the stop of the second power device after the operator operates the power supply assembly in place;

one end of the stopping rod body is rotatably connected with the power supply assembly, a guide rod is arranged in the middle of the stopping rod body, the guide rod moves along the guide groove in an adaptive mode in the process that the power supply assembly drives the stopping rod body to move, and the other end of the stopping rod body stops the second power device.

Further, the power supply assembly includes:

the holding connecting rod comprises a first rotating shaft body, a stress section and a connecting section, wherein the stress section and the connecting section are respectively arranged on two sides of the first rotating shaft body, an included angle between the stress section and the connecting section is smaller than 90 degrees, and the first rotating shaft body rotates around a fixed axis;

the force transmission rod body comprises a rotating connecting end and a linear motion end, the rotating connecting end is rotatably connected with the tail end of the connecting section, and the linear motion end moves along the linear motion direction of the push-pull rod body under the limitation of the linear guide groove;

and the linear motion end is rotatably connected with the end part of the push-pull rod body.

Further, the second power device comprises a stop block, a slide way, a connecting rod, a force application rod, a return spring and a moving block;

the reset spring is sleeved on the periphery of the push pull rod body, one end of the reset spring is blocked by the stop block, and the stop block is fixedly arranged;

the slideway is fixedly arranged, one end of the connecting rod is linearly guided, the guiding direction is parallel to the length direction of the push-pull rod body, the other end of the connecting rod is rotatably connected with one end of the force application rod, the middle part of the force application rod is rotatably arranged through a fixed axis, and the other end of the force application rod is used for an operator to apply force; the moving block is rotatably connected with the linear motion end of the connecting rod and synchronously linearly moves with the linear motion end, and the moving block is sleeved on the periphery of the push-pull rod body and is attached to the other end of the return spring;

the slide way and the stress end of the force application rod are respectively positioned on two sides of the push-pull rod body, and the moving block drives the cutting blade to perform linear motion.

Furthermore, a guide piece is arranged at the end part of the push-pull rod body, an annular groove is formed in the guide piece around the axis of the push-pull rod body, a leading-out end inserted into the annular groove is arranged on the linear motion end, and the leading-out end is attached to two side walls of the annular groove.

Furthermore, the force transmission rod body is symmetrical about a plane, the symmetrical plane is superposed with the axial line of the push-pull rod body, and the projection of the force transmission rod body on the symmetrical plane is V-shaped.

Further, the first rotating shaft body and the connecting section are symmetrical about a plane, and the symmetrical plane coincides with the axis of the push-pull rod body.

Furthermore, the connecting side of the force application rod and the connecting rod comprises two parts which are symmetrically arranged relative to the connecting rod, the two parts are rotationally connected with the connecting rod, the connecting ends of the two symmetrically arranged parts are positioned at the side, where the force application rod rotating shaft is arranged, of the push-pull rod body, and the push-pull rod body is arranged between the two symmetrically arranged parts.

Further, the inside spout that is the type of convex cross-section that is provided with of slide, the connecting rod part inserts in the spout, and insert the part symmetry and be provided with two guide bars, two the guide bar inserts respectively the spout both sides.

Further, still be provided with locking device, locking device includes:

the middle part of the lock rod is fixedly connected with the power supply assembly, and two ends of the lock rod are freely arranged;

the locking block moves along a straight line and comprises a left group of extrusion guide surfaces, a right group of concave locking grooves and a connecting surface which are sequentially connected; the two ends of the lock rod extrude the extrusion guide surface under the force application of an operator, and the lock rod enters the sunken locking groove from top to bottom along the extrusion guide surface, and when the operator applies force for the second time, the lock rod leaves the sunken locking groove from top to bottom and returns through the lower part of the connecting surface;

and the extrusion spring is arranged at the bottom of the locking block and used for providing resetting force for the locking block.

Through the technical scheme, the invention has the beneficial effects that:

in the invention, the push-pull rod body and the cutting blade are respectively driven to do linear motion by the first power device and the second power device, so that the linear motion part occupying a larger appearance proportion can save space by a parallel motion mode, and the structural layout is more suitable for the operation action of an operator; in the first working position where the two forceps bodies are jointed, the first power device limits the second power device to avoid the occurrence of misoperation, in the second working position, the meshing of the two forceps bodies is effectively ensured, in the following operation, an operator can use the first power device as a fixed end to operate the second power device, the second power device can be easily converted to a third working position under the condition of no blocking, the distribution form of the whole power assembly effectively reduces the space requirement of the closer, and the risk of misoperation is reduced through the optimization of the action form between the two power devices; through the technical scheme of the invention, the cutting blade and the movement power part of the forceps body are reasonable and more distributed, and the volume and the weight of the whole device are reduced, so that the holding fatigue is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic illustration of a state comparison of a bipolar tissue closure linkage power assembly in three operating positions;

FIG. 2 is a schematic structural diagram of a first power plant;

FIG. 3 is a schematic structural view (including a simplified structural view) of a holding link;

FIG. 4 is a schematic view of a force transmitting rod (including a simplified schematic view);

FIG. 5 is a schematic structural view of a polar tissue closer linkage power assembly;

FIG. 6 is an enlarged view of a second power plant in position;

FIG. 7 is a schematic structural view of the force application rod;

FIG. 8 is a schematic view of the connection position of the power supply assembly and the push-pull rod body;

FIG. 9 is an enlarged partial view of the locking lever in the position in which it is disposed;

FIG. 10 is a schematic structural view of a lock block;

FIG. 11 is a cross-sectional view of the locking piece;

description of the drawings:

1. a push-pull rod body; 2. a forceps body; 3. a first power unit; 31. a power supply assembly; 311. a first rotation shaft body; 312. a stress section; 313. a connecting section; 314. rotating the connecting end; 315. a linear motion end; 32. a stopper rod body; 32a, a guide rod; 4. a cutting blade; 5. a second power unit; 51. a stopper; 52. a slideway; 52a, a chute; 53. a connecting rod; 54. a force application rod; 55. a return spring; 56. a moving block; 6. a guide member; 61. an annular groove; 7. a locking device; 71. a lock lever; 72. a locking block; 72a, extruding a guide surface; 72b, a recessed locking groove; 72c, a connecting surface; 73. compressing the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, a bipolar tissue closer linkage power assembly comprises: the push-pull rod body 1 is used for providing linear power for opening and closing the two forceps bodies 2 of the closer; the first power device 3 drives the push-pull rod body 1 to move linearly; the cutting blade 4 is arranged between the two forceps bodies 2 and is used for cutting the clamped tissue; the second power device 5 drives the cutting blade 4 to move linearly; the second power device 5 is arranged on one side, close to the tweezer body 2, of the first power device 3, the second power device 5 and the first power device 3 comprise first working positions which are arranged in a fitting mode, in the first working positions, the two tweezer bodies 2 are opened, and the cutting blade 4 retracts relative to the tweezer bodies 2; the first power device 3 further comprises a second working position, in the second working position, the first power device 3 is far away from the second power device 5 in the first working position, and the two forceps bodies 2 are closed; the second power device 5 also comprises a third working position, in which the second power device 5 is relatively close to the first power device 3 in the second working position and drives the cutting blade 4 to extend relative to the forceps body 2.

In the invention, the push-pull rod body 1 and the cutting blade 4 are respectively driven to do linear motion by the first power device 3 and the second power device 5, so that a linear motion part occupying a larger outline proportion can save space by a parallel motion mode, wherein the second power device 5 is arranged at one side of the first power device 3 close to the tweezer body 2, and is more suitable for the operation action of an operator; the second power device 5 is applied with force more conveniently by taking the first power device 3 as a reference, wherein the first power device 3 is used for limiting the second power device 5 at the first working position where the two power devices are attached, the occurrence of misoperation is avoided, the meshing of the two forceps bodies 2 is effectively ensured at the second working position, in the operation thereafter, an operator can use the first power device 3 as a fixed end to operate the second power device 5, the second power device 5 can be easily changed to the third working position under the unobstructed condition, the distribution form of the whole power assembly effectively reduces the space requirement of the closer, and the risk of misoperation is reduced by optimizing the action form between the two power devices.

As a preferable aspect of the above embodiment, the first power unit 3 includes: the power supply assembly 31 drives the push-pull rod body 1 to move linearly under the force application of an operator, so that the two forceps bodies 2 are opened and closed; a stopper lever 32 for stopping the second power unit 5 to restrict the operation thereof when the operator does not operate the second power unit, and for releasing the second power unit 5 when the operator operates the power supply unit 31 in place; one end of the stopping rod body 32 is rotatably connected with the power supply assembly 31, a guide rod 32a is arranged in the middle of the stopping rod body 32, the guide rod 32a moves along the guide groove in an adaptive manner in the process that the power supply assembly 31 drives the stopping rod body 32 to move, and the other end of the stopping rod body 32 stops the second power device 5.

Referring to fig. 1, in the preferred embodiment, before the power supply assembly 31 is not stressed, the power supply assembly and the stop rod 32 are located at the left side in the figure, and when the operator rotates the power supply assembly 31 to the right side in the figure by external force, the stop rod 32 is also driven to move to the right side, the guide groove is used for keeping the height of the guide rod 32a at a set position, and after the stop rod 32 moves to the right side to a proper position, the blocking of the second power device 5 is naturally released, so that the operability is achieved. The guide way direct molding is inside the closer casing, plans the motion trail of the backstop body of rod 32, has guaranteed the precision of operation.

As a preferable example of the above embodiment, as shown in fig. 3, the power supply unit 31 includes: the holding connecting rod comprises a first rotating shaft body 311, a stress section 312 and a connecting section 313, wherein the stress section 312 and the connecting section 313 are respectively arranged at two sides of the first rotating shaft body 311, an included angle between the stress section 312 and the connecting section 313 is smaller than 90 degrees, and the first rotating shaft body 311 rotates around a fixed axis; the force transmission rod body comprises a rotating connecting end 314 and a linear motion end 315, the rotating connecting end 314 is rotatably connected with the tail end of the connecting section 313, and the linear motion end 315 moves along the linear motion direction of the push-pull rod body 1 under the limitation of the linear guide groove; wherein, the linear motion end 315 is rotatably connected with the end of the push-pull rod body 1.

In the preferred embodiment, the angles of the force-bearing section 312 and the connecting section 313 in the holding connecting rod can be set to connect with the force-transmitting rod body on the same side of the push-pull rod body 1, so that the efficient use of space is realized, and the whole power supply assembly 31 effectively ensures the transmission of rotational power and linear power through the rotation limitation of the axis of the first rotating shaft body 311 and the linear motion limitation of the linear motion end 315.

As a preferable aspect of the above embodiment, the second power unit 5 includes a stopper 51, a slide rail 52, a link 53, an urging lever 54, a return spring 55, and a moving block 56; the return spring 55 is sleeved on the periphery of the push-pull rod body 1, one end of the return spring is blocked by the stop block 51, and the stop block 51 is fixedly arranged; the slideway 52 is fixedly arranged, one end of the connecting rod 53 is linearly guided, the guiding direction is parallel to the length direction of the push-pull rod body 1, the other end of the connecting rod 53 is rotatably connected with one end of the force application rod 54, the middle part of the force application rod 54 is rotatably arranged through a fixed axis, and the other end is used for applying force by an operator; the moving block 56 is rotatably connected with the linear motion end 315 of the connecting rod 53, and performs linear motion synchronously with the linear motion end 315, and the moving block 56 is sleeved on the periphery of the push-pull rod body 1 and is attached to the other end of the return spring 55; the slide rail 52 and the force applying rod 54 have force-bearing ends respectively located at two sides of the push-pull rod body 1, and the moving block 56 drives the cutting blade 4 to perform linear motion.

Referring to fig. 5 and 6, in the working process, after the stopping rod body 32 releases the stopping of the force applying rod 54, an operator applies force to the end of the force applying rod 54 on one side of the push-pull rod body 1 to rotate the force applying rod 54 around the fixed rotating shaft, so as to pull the linear motion end 315 of the connecting rod 53 on the other side of the push-pull rod body 1 to move, the moving block 56 performs linear motion under the pulling of the connecting rod 53 to extrude the return spring 55, and at the same time, the cutting blade 4 is driven to perform linear motion to perform a cutting action, and after the execution is completed, after the application of force by the operator is released, the return spring 55 drives the second power device 5 to return through the moving block 56.

Preferably, the end of the push-pull rod body is provided with a guide member, the guide member is provided with an annular groove 61 around the axis of the push-pull rod body, the linear motion end 315 is provided with a leading-out end inserted into the annular groove 61, and the leading-out end is attached to two side walls of the annular groove 61. The end of drawing forth through with linear motion end 315 sets up in annular groove 61 and realizes rotating the connection in this preferred scheme, the effectual degree of difficulty of being connected that has reduced linear motion end 315 and guide 6, linear motion end 315 can be according to the needs of installation from the top of annular cell body or send down and slide in, but operating space is big, and is lower to the assembly requirement, but can effectual realization rotation connection under the restriction of straight line guide slot, and straight line guide slot sets up on the shells inner wall of closure, also is convenient for be connected with linear motion end 315.

Considering for structural stability's purpose, passing the power body of rod about the plane symmetry, and the plane of symmetry and push-pull rod body 1 axis coincidence, the projection of passing the power body of rod on the plane of symmetry is V style of calligraphy to make the power body of rod both sides all can obtain effectual support, the effectual motion stability that improves the structure in the use, the distance between rotation link 314 and the linear motion end 315 can not increase to the form that sets up of V style of calligraphy, the intensity of equally multiplicable structure.

In order to improve the stability of use, the first rotating shaft body 311 and the connecting section 313 are symmetrical about a plane, and the symmetrical plane coincides with the axis of the push-pull rod body 1. Therefore, the two symmetrical sides of the holding connecting rod can be effectively supported, the two symmetrical sides of the holding connecting rod comprise the symmetrical installation of the two ends of the first rotating shaft body 311 and the symmetrical connection of the two ends of the connecting section 313 and the rotating connecting end 314, and the motion stability of the structure in the using process can be effectively improved through the symmetrical installation mode.

Preferably, the force-bearing section 312 is symmetrical about the symmetry plane, so that the force transmission is stably performed when the force is applied externally, and the stability of the force applied to the internal structure of the closure is ensured. Wherein, atress section 312 is provided with the loop configuration for the other end of first rotation axis body 311, supplies the operator to grip, and the setting up of loop configuration makes the application of force that carries on that the operator can be better, and the stability of the operation can effectually be guaranteed in gripping after running through the hand.

In this preferred scheme, first rotation axis body 311 is interrupted the setting, and the department of interruption forms the holding tank, holds push-and-pull rod body 1 part, through the setting of holding tank for the space obtains further optimization, has guaranteed power component's power transmission on the one hand, and on the other hand has evaded pushing and pulling rod body 1's blockking, makes the atress section 312 of holding the connecting rod can obtain relative extension, thereby makes the operator application of force can further reduce, thereby reduces the operation fatigue degree.

In the above structure, the length of the force applying rod 54 is extended in a limited space, the force application size is reduced by the lever principle, the space distribution form of the closer is fully utilized by the whole power assembly, the length of the connecting rod 53 is extended as much as possible, the smoothness of power transmission can be ensured, the risk of jamming is reduced, and the noise of operation is low. In order to further exert the leverage and reduce the operation fatigue, the rotation shaft of the force application rod 54 is located on the side of the push-pull rod body 1 that applies force to the operator.

In order to facilitate the positioning of the push-pull rod body 1 in the length direction, as shown in fig. 6 and 8, the stopper 51 includes two ring bodies parallel and parallel to each other in the length direction of the push-pull rod body 1, the axis of the ring body coincides with the axis of the push-pull rod body 1, the two ring bodies are arranged to obtain a spacing space at the middle position, the position of the push-pull rod body 1 in the length direction can be determined by limiting a part of the structure in the housing between the two ring bodies, and the installation and the positioning are convenient and accurate.

As a preferable mode of the above embodiment, as shown in fig. 7, the connection side of the force application rod 54 and the connecting rod 53 includes two parts symmetrically disposed about the connecting rod 53, both of the two parts are rotatably connected to the connecting rod 53, the connection ends of the two symmetrically disposed parts are located at the rotation axis disposed side of the push-pull rod body 1 on the force application rod 54, and the push-pull rod body 1 is disposed between the two symmetrically disposed parts, thereby improving the stability of installation and force transmission. The slide rail 52 is internally provided with a slide groove 52a with a convex section, the connecting rod 53 is partially inserted into the slide groove 52a, the inserted part is symmetrically provided with two guide rods 32a, the two guide rods 32a are respectively inserted into two sides of the slide groove 52a, the simplest linear guide of the end part of the connecting rod 53 can be realized through the structure, only one end of the connecting rod 53 needs to slide into the slide groove 52a in the installation process, the falling risk does not exist, and the two symmetrical parts of the end part of the force application rod 54 are respectively arranged at two ends of the slide rail 52, so the action is stable and reliable.

In order to further ensure the smoothness of the movement and the reasonability of the structure, the middle part of the connecting rod 53 is of a bent structure, the concave side is arranged opposite to the slideway 52, the connecting ends of the two symmetrically arranged parts are positioned at one side of the push-pull rod body 1 arranged on the rotating shaft of the force application rod 54, and the push-pull rod body 1 is arranged between the two symmetrically arranged parts, so that on one hand, the structure of the force application rod 54 is more stable, the distribution of the force application rod 54 relative to the push-pull rod body 1 is more reasonable, and more space possibility is provided for the arrangement of the push-pull rod body 1 and the slideway 52.

As shown in fig. 9 to 11, a locking device 7 is further provided, and the locking device 7 includes: the middle part of the lock rod 71 is fixedly connected with the power supply component 31, and two ends of the lock rod are freely arranged; the locking block 72 moves along a straight line and comprises a left group of extrusion guide surfaces 72a, a right group of concave locking grooves 72b and a connecting surface 72c which are connected in sequence; the two ends of the lock rod 71 extrude the extrusion guide surface 72a under the force application of an operator, and enter the concave locking groove 72b from top to bottom along the extrusion guide surface 72a, when the operator applies force for the second time, the lock rod 71 leaves the concave locking groove 72b from top to bottom and returns through the lower part of the connecting surface 72 c; and the pressing spring 73 is arranged at the bottom of the locking block 72 and is used for providing a resetting force for the locking block 72.

Through the locking device 7, the power supply assembly 31 can realize self-positioning through the locking action of the locking rod 71 in the concave locking groove 72b after moving to the locking direction, so that the gripping force of an operator is released, the operation comfort is ensured, and the operation safety is improved. Wherein the pressing spring 73 always provides a counter force against the pressing force from the lock lever 71, thereby ensuring the balance of the locked position when no external force is applied.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.