CN212016032U

CN212016032U - Gynaecology and obstetrics's premature infant thermostated container

Info

Publication number: CN212016032U
Application number: CN201922305741.1U
Authority: CN
Inventors: 郭树林
Original assignee: Nanan Qixing Machinery Trading Co Ltd
Current assignee: Nanan Qixing Machinery Trading Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-11-27
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a gynaecology and obstetrics's premature infant thermostated container relates to thermostated container technical field, to the not good problem of current thermostated container flexibility ratio, now proposes following scheme, and it includes the thermostated container main part, the four corners fix with screw of thermostated container main part bottom has the universal wheel of vertical setting, the installation cavity has been seted up to the inner wall of thermostated container main part bottom, the inside of installation cavity is equipped with the screw thread post of horizontal setting, the outer wall screw thread at screw thread post both ends has cup jointed the thread bush, the below of thermostated container main part is equipped with the support base of horizontal setting, the mounting groove has been seted up at the top of support base, the inside of mounting groove is equipped with the installation piece of horizontal setting. The utility model discloses can be nimble highly adjust the thermostated container, can be simple and convenient accomodate and emit the moving part to the thermostated container, can be simple and convenient carry out the dismouting change to the supporting component of thermostated container, convenient to use, stability can be high, and the security performance is high.

Description

Gynaecology and obstetrics's premature infant thermostated container

Technical Field

The utility model relates to an incubator technical field especially relates to a gynaecology and obstetrics's premature infant incubator.

Background

The constant temperature box is an indispensable medical supply for obstetrics and gynecology department in hospitals, is used for keeping warm for premature babies, the premature babies are very afraid of cold and are difficult to adapt to external environment, so the constant temperature box is put in the box, has no influence on children, is equivalent to a small box with an air conditioner, provides temperature for children, is safest in the constant temperature box because the physical function of the premature babies can not be completely contacted with the outside, and the hospitals can regularly disinfect.

Although the existing incubator can provide suitable temperature for children, in the using process, corresponding height is fixed mostly, the observation of a doctor on a newborn is difficult to adjust flexibly according to the operation requirement of the doctor, in the process, the observation progress of the doctor on the newborn is greatly reduced, the using effect is poor, and the incubator for the premature infant in the obstetrics and gynecology department is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of gynaecology and obstetrics's premature infant thermostated container has solved the not good problem of thermostated container flexibility ratio.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a premature infant incubator of gynaecology and obstetrics comprises an incubator main body, wherein vertically arranged universal wheels are fixed at four corners of the bottom of the incubator main body through screws, an installation cavity is formed in the inner wall of the bottom of the incubator main body, transversely arranged threaded columns are arranged inside the installation cavity, threaded sleeves are sleeved on outer wall threads at two ends of each threaded column, a transversely arranged supporting base is arranged below the incubator main body, a mounting groove is formed in the top of the supporting base, transversely arranged mounting blocks are arranged inside the mounting groove, connecting mechanisms are arranged at two ends of each mounting block, the mounting blocks are connected inside the mounting groove through the connecting mechanisms, transversely arranged linkage blocks are welded at two ends of the top of each mounting block, one ends of linkage rods are hinged to two sides of each linkage block through hinges, and the other ends of the linkage rods are respectively hinged to two sides of the threaded sleeves through hinges, the both sides of constant temperature box main part bottom have all seted up the spout, gangbar sliding connection is in the inside of spout, the linkage hole has all been seted up in the four corners of supporting the base, the universal wheel movable sleeve is established in the inside in linkage hole.

Preferably, the left end of screw thread post is passed through the bearing and is rotated the connection on the left inner wall of installation cavity, the rotation groove has been seted up on the right side of installation cavity, the right-hand member of screw thread post extends the outside of rotation groove and the welding has the hand wheel of vertical setting, the screw thread post rotates the cover and establishes the inside in rotation groove, the both ends of screw thread post all are equipped with the screw thread, and screw thread opposite direction.

Preferably, the supporting shoe of vertical setting is all welded at the both ends of supporting the base top, supporting shoe and thermostated container main part sliding connection, the left side welding of thermostated container main part has the locating piece of horizontal setting, the sliding tray of vertical setting is seted up at the middle part of supporting shoe, locating piece and screw thread post sliding tray establish the inside at the sliding tray, the top threaded connection of supporting shoe has the bolt of horizontal setting, a plurality of thread grooves have been seted up along vertical in the both sides of thermostated container main part, bolt and thread groove screw-thread fit work.

Preferably, the top of the threaded sleeve is welded with a transversely arranged limiting block, the inner wall of the top of the mounting cavity is provided with a transversely arranged limiting groove, and the limiting block is slidably connected inside the limiting groove.

Preferably, coupling mechanism includes spread groove, slider, fixed block, fixed slot and reset spring, the both ends at the installation piece are seted up to the spread groove, slider sliding connection is in the inside of spread groove, the one side of linkage piece is kept away from to the fixed block welding at the slider, the fixed slot is seted up on the inner wall at mounting groove both ends, the one end movable sleeve that the slider was kept away from to the fixed block is established in the inside of fixed slot, reset spring sets up the inside at the fixed slot, reset spring's one end welding is on the inner wall of fixed slot, reset spring's other end welding is on the slider, the inside at the spread groove is established to the fixed block.

Preferably, the top welding of slider has the stirring piece of vertical setting, stir the inside at the spread groove of piece slip cover.

The utility model discloses in:

through the cooperation work of the thermostat main body, the universal wheel, the mounting cavity, the threaded column, the threaded sleeve, the supporting base, the mounting groove, the mounting block, the linkage rod, the linkage hole, the hand wheel, the supporting block, the positioning block, the sliding groove, the bolt, the threaded groove, the limiting block, the limiting groove, the connecting groove, the sliding block, the fixing groove, the reset spring and the toggle block, on one hand, the height of the thermostat can be flexibly adjusted according to the use requirements of doctors, and the movable part of the thermostat can be simply and conveniently stored and discharged, so that the service life of the movable part of the thermostat is prolonged, the thermostat can be effectively supported, and the stability of the thermostat is improved; on the other hand, the support component of the constant temperature box can be simply and conveniently disassembled, assembled and replaced, the support stability of the support component of the constant temperature box is improved, potential safety hazards are reduced, and the safety performance is high.

To sum up, the utility model discloses can be nimble highly adjust the thermostated container, can be simple and convenient accomodate and emit the moving part to the thermostated container, the supporting component to the thermostated container that can be simple and convenient carries out the dismouting change, convenient to use, and stability can be high, and the security performance is high.

Drawings

Fig. 1 is a schematic structural view of a premature infant incubator for obstetrics and gynecology department according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a front view of the utility model provides a premature infant incubator of gynaecology and obstetrics.

Reference numbers in the figures: 1. a thermostat body; 2. a universal wheel; 3. a mounting cavity; 4. a threaded post; 5. a threaded sleeve; 6. a support base; 7. mounting grooves; 8. mounting blocks; 9. a linkage block; 10. a linkage rod; 11. a linkage hole; 12. a hand wheel; 13. a support block; 14. positioning blocks; 15. a sliding groove; 16. a bolt; 17. a thread groove; 18. a limiting block; 19. defining a slot; 20. connecting grooves; 21. a slider; 22. a fixed block; 23. fixing grooves; 24. a return spring; 25. and a poking block.

Detailed Description

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

Referring to fig. 1-3, a premature infant incubator for obstetrics and gynecology department comprises an incubator main body 1, wherein four corners of the bottom of the incubator main body 1 are fixed with vertically arranged universal wheels 2 through screws, an installation cavity 3 is arranged on the inner wall of the bottom of the incubator main body 1, a transversely arranged threaded column 4 is arranged inside the installation cavity 3, threaded sleeves 5 are sleeved on outer wall threads at two ends of the threaded column 4, a transversely arranged supporting base 6 is arranged below the incubator main body 1, an installation groove 7 is arranged at the top of the supporting base 6, a transversely arranged installation block 8 is arranged inside the installation groove 7, two ends of the installation block 8 are respectively provided with a connecting mechanism, the installation block 8 is connected inside the installation groove 7 through the connecting mechanism, transversely arranged linkage blocks 9 are welded at two ends of the top of the installation block 8, two sides of the linkage blocks 9 are hinged with one end of a linkage rod 10 through hinges, the other end of the linkage rod 10 is respectively hinged with two, the two sides of the bottom of the thermostat main body 1 are respectively provided with a sliding groove, the linkage rod 10 is connected inside the sliding grooves in a sliding manner, the four corners of the supporting base 6 are respectively provided with a linkage hole 11, the universal wheel 2 is movably sleeved inside the linkage holes 11, when a user needs to adjust the height of the thermostat main body 1 in the process of using the thermostat main body 1, the user can rotate the threaded column 4 at the moment, the threaded column 4 rotates to drive the threaded sleeve 5 to perform opposite displacement or deviated displacement through the matching work of the threaded column 4 and the threaded sleeve 5, the linkage rod 10 is driven to deflect through the hinging matching work of the threaded sleeve 5 and the linkage rod 10, the linkage block 9 is driven to perform vertical displacement, the mounting block 8 is driven to perform vertical displacement, the supporting base 6 is driven to perform vertical displacement, and the thermostat main body 1 is driven to perform vertical displacement, the height of the thermostat body 1 can be conveniently adjusted by a user at this time, so that the thermostat body 1 can be conveniently used by the user.

And when a user needs to carry the thermostat main body 1 in the process of using the thermostat main body 1, the user can rotate the threaded column 4, the threaded column 4 rotates, the threaded column 4 and the threaded sleeve 5 are matched to drive the threaded sleeve 5 to deviate and displace, the threaded sleeve 5 and the linkage rod 10 are hinged to cooperate to drive the linkage rod 10 to deflect through the linkage block 9 and the linkage rod 10, the linkage block 9 is driven to vertically displace upwards, the mounting block 8 is driven to vertically displace upwards, the support base 6 is driven to vertically displace upwards, when the support base 6 is separated from the ground, the universal wheel 2 slides out of the linkage hole 11, the universal wheel 2 is in contact with the ground, the user can push the thermostat main body 1, and the universal wheel 2 can rotate, drive the thermostat main body 1 to carry out horizontal displacement, and the user can be convenient carries the thermostat main body 1 this moment.

When the user does not need to carry the incubator main body 1, the user can rotate the threaded column 4, the threaded column 4 and the threaded sleeve 5 are matched to drive the threaded sleeve 5 to move in the opposite direction through the rotation of the threaded column 4, the linkage rod 10 is driven to deflect through the hinging and matching of the threaded sleeve 5 and the linkage rod 10, the linkage block 9 and the linkage rod 10 are hinged to drive the linkage block 9 to move vertically downwards, the mounting block 8 is driven to move vertically downwards, the supporting base 6 is driven to move vertically downwards, when the universal wheel 2 slides into the linkage hole 11, the supporting base 6 is in contact with the ground, the incubator main body 1 is stabilized on the ground, the user can conveniently use the incubator main body 1, meanwhile, the universal wheel 2 is separated from the ground, and the universal wheel 2 can be effectively protected, avoid universal wheel 2 to receive the heavy load of incubator main part 1 for a long time, lead to universal wheel 2 to take place to damage, improve universal wheel 2's life.

The left end of screw thread post 4 is rotated through the bearing and is connected on the left inner wall of installation cavity 3, and the rotation groove has been seted up on the right side of installation cavity 3, and the right-hand member of screw thread post 4 extends the outside of rotation groove and the welding has the hand wheel 12 of vertical setting, and screw thread post 4 rotates the cover and establishes the inside in rotation groove, and the both ends of screw thread post 4 all are equipped with the screw thread, and screw thread opposite direction, through hand wheel 12, the user can be convenient rotate screw thread post 4.

The supporting blocks 13 which are vertically arranged are welded at two ends of the top of the supporting base 6, the supporting blocks 13 are connected with the thermostat main body 1 in a sliding mode, the positioning blocks 14 which are transversely arranged are welded at the left side of the thermostat main body 1, the sliding grooves 15 which are vertically arranged are formed in the middle of the supporting blocks 13, the positioning blocks 14 and the threaded columns 4 are slidably sleeved in the sliding grooves 15, bolts 16 which are transversely arranged are connected with the top of the supporting blocks 13 in a threaded mode, a plurality of threaded grooves 17 are vertically formed in two sides of the thermostat main body 1, the bolts 16 are matched with the threaded grooves 17 in a threaded mode, when the height of the thermostat main body 1 is adjusted by a user, the bolts 16 can be rotated by the user, the bolts 16 are driven to enter the corresponding threaded grooves 17, the supporting blocks 13 are fixed at two sides of the thermostat main body 1, the supporting blocks 13 can effectively support, the stability of the incubator main body 1 is improved.

The welding of the top of thread bush 5 has the restriction piece 18 of horizontal setting, and the inner wall at installation cavity 3 top sets up the restriction groove 19 of horizontal setting, and restriction piece 18 sliding connection can carry out effectual spacing to thread bush 5 in the inside of restriction groove 19 through the cooperation work of restriction piece 18 and restriction groove 19, avoids thread bush 5 at the in-process of displacement, takes place the skew, improves thread bush 5's stability can.

The connecting mechanism comprises a connecting groove 20, a sliding block 21, a fixing block 22, a fixing groove 23 and a return spring 24, the connecting groove 20 is arranged at two ends of the mounting block 8, the sliding block 21 is connected inside the connecting groove 20 in a sliding manner, the fixing block 22 is welded at one side of the sliding block 21 far away from the linkage block 9, the fixing groove 23 is arranged on the inner wall of two ends of the mounting groove 7, one end of the fixing block 22 far away from the sliding block 21 is movably sleeved inside the fixing groove 23, the return spring 24 is arranged inside the fixing groove 23, one end of the return spring 24 is welded on the inner wall of the fixing groove 23, the other end of the return spring 24 is welded on the sliding block 21, the fixing block 22 is movably sleeved inside the connecting groove 20, when the supporting base 6 is subjected to long-time supporting work, the sliding block 21 is damaged, and needs to be replaced, drive slider 21 and break away from the inside of fixed slot 23, the user can pull support base 6 this moment, drives mounting groove 7 and the separation of installation piece 8 on the support base 6, supports base 6 this moment and is pulled out thermostat main part 1, and the user can change support base 6 this moment.

And when the user need install new support base 6, the user can pull slider 21 this moment, elasticity through reset spring 24, drive slider 21 and carry out horizontal displacement, drive slider 21 and enter into the inside of spread groove 20, the user can establish the outside at installation piece 8 with mounting groove 7 cover on the new support base 6 this moment, the user can not hard up slider 21 this moment, elasticity through reset spring 24 resets, drive slider 21 and carry out horizontal displacement, drive slider 21 breaks away from the inside of spread groove 20, enter into the inside of fixed slot 23, new support base 6 is fixed in the bottom of installation piece 8 this moment, support base 6 this moment and can continue effectual supporting thermostat main part 1, improve the duration of thermostat main part 1.

The top welding of slider 21 has the stirring piece 25 of vertical setting, and stirring piece 25 sliding sleeve is established in the inside of spread groove 20, and through stirring piece 25, the user can be convenient stir slider 21.

The working principle is as follows: when a user needs to adjust the height of the thermostat main body 1 in the process of using the thermostat main body 1, the user can rotate the threaded column 4, the threaded column 4 rotates, the threaded column 4 and the threaded sleeve 5 are matched to drive the threaded sleeve 5 to move towards or away from each other, the linkage block 9 and the linkage rod 10 are hinged to drive the linkage rod 10 to deflect through the hinge matching of the threaded sleeve 5 and the linkage rod 10, the linkage block 9 is driven to vertically displace, the mounting block 8 is driven to vertically displace, the supporting base 6 is driven to vertically displace, the thermostat main body 1 is driven to vertically displace, the user can conveniently adjust the height of the thermostat main body 1, the user can conveniently use the thermostat main body 1, and the user can use the thermostat main body 1 in the process of using the thermostat main body 1, when the incubator body 1 needs to be transported, the threaded column 4 can be rotated by a user at the moment, the threaded column 4 can be rotated through the rotation of the threaded column 4, the threaded sleeve 5 can be driven to deviate from displacement through the matching work of the threaded column 4 and the threaded sleeve 5, the linkage block 9 and the linkage rod 10 are hinged and matched to drive the linkage rod 10 to deflect, the linkage block 9 is driven to displace vertically upwards, the mounting block 8 is driven to displace vertically upwards, the supporting base 6 is driven to displace vertically upwards, when the supporting base 6 is separated from the ground, the universal wheel 2 slides out of the linkage hole 11, the universal wheel 2 is contacted with the ground at the moment, the user can push the incubator body 1 at the moment, the incubator body 1 can be driven to displace horizontally through the rotation of the universal wheel 2 at the moment, the user can conveniently transport the incubator body 1 at the moment, when the user does not need to carry the incubator main body 1, the user can rotate the threaded column 4, the threaded column 4 and the threaded sleeve 5 are matched to drive the threaded sleeve 5 to move in the opposite direction through the rotation of the threaded column 4, the linkage rod 10 is driven to deflect through the hinging and matching of the threaded sleeve 5 and the linkage rod 10, the linkage block 9 and the linkage rod 10 are hinged to drive the linkage block 9 to move vertically downwards, the mounting block 8 is driven to move vertically downwards, the supporting base 6 is driven to move vertically downwards, when the universal wheel 2 slides into the linkage hole 11, the supporting base 6 is in contact with the ground, the incubator main body 1 is stabilized on the ground, the user can conveniently use the incubator main body 1, meanwhile, the universal wheel 2 is separated from the ground, and the universal wheel 2 can be effectively protected, the universal wheel 2 is prevented from being damaged due to the fact that the universal wheel 2 is stressed by the thermostat main body 1 for a long time, the service life of the universal wheel 2 is prolonged, when the height of the thermostat main body 1 is adjusted by a user, the user can rotate the bolt 16 to drive the bolt 16 to enter the corresponding threaded groove 17, the supporting blocks 13 are fixed on two sides of the thermostat main body 1, the supporting blocks 13 can effectively support the supporting base 6, pressure of the threaded column 4 is reduced, stability of the thermostat main body 1 is improved, the threaded sleeve 5 can be effectively limited through matching work of the limiting block 18 and the limiting groove 19, the threaded sleeve 5 is prevented from being deviated in the displacement process, stability of the threaded sleeve 5 is improved, and when the supporting base 6 is damaged after long-time supporting work, and needs to be replaced, the user can pull the sliding block 21, through the elasticity of the reset spring 24, the slide block 21 is driven to horizontally displace, the slide block 21 is driven to separate from the inside of the fixed groove 23, at the moment, a user can pull the supporting base 6 to drive the mounting groove 7 on the supporting base 6 to separate from the mounting block 8, at the moment, the supporting base 6 is detached out of the incubator main body 1, at the moment, the user can replace the supporting base 6, and when the user needs to install a new supporting base 6, the user can pull the slide block 21, through the elasticity of the reset spring 24, the slide block 21 is driven to horizontally displace, the slide block 21 is driven to enter the inside of the connecting groove 20, at the moment, the user can sleeve the mounting groove 7 on the new supporting base 6 on the outside of the mounting block 8, at the moment, the user can loosen the slide block 21, through the reset elasticity of the reset spring 24, the slide block 21 is driven to horizontally, enter into the inside of fixed slot 23, new support base 6 is fixed in the bottom of installation piece 8 this moment, and support base 6 can continue effectual supporting thermostat main part 1 this moment, improves the duration of the thermostat main part 1.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a gynaecology and obstetrics's premature infant thermostated container, includes thermostated container main part (1), its characterized in that, the four corners fix with screw of thermostated container main part (1) bottom has vertical setting universal wheel (2), the inner wall of thermostated container main part (1) bottom has seted up installation cavity (3), the inside of installation cavity (3) is equipped with the screw thread post (4) of horizontal setting, the outer wall screw thread at screw thread post (4) both ends has cup jointed thread bush (5), the below of thermostated container main part (1) is equipped with horizontal setting support base (6), mounting groove (7) have been seted up at the top of support base (6), the inside of mounting groove (7) is equipped with horizontal setting installation piece (8), the both ends of installation piece (8) all are equipped with coupling mechanism, installation piece (8) are connected in the inside of mounting groove (7) through coupling mechanism, the utility model discloses a thermostat, including installation piece (8), linkage piece (9), linkage piece (10), hinge joint, the spout has all been seted up to the both sides of linkage piece (9), the other end of linkage piece (10) articulates the both sides in thread bush (5) respectively through the hinge, the spout has all been seted up to the both sides of thermostat main part (1) bottom, linkage piece (10) sliding connection is in the inside of spout, linkage hole (11) have all been seted up in the four corners of supporting base (6), universal wheel (2) movable sleeve is established in the inside of linkage hole (11).

2. The premature infant incubator of claim 1, wherein the left end of the threaded column (4) is rotatably connected to the inner wall of the left side of the mounting cavity (3) through a bearing, a rotating groove is formed in the right side of the mounting cavity (3), the right end of the threaded column (4) extends out of the rotating groove and is welded with a hand wheel (12) which is vertically arranged, the threaded column (4) is rotatably sleeved inside the rotating groove, and threads are arranged at two ends of the threaded column (4) and are opposite in thread direction.

3. The gynaecology and obstetrics's premature infant thermostated container of claim 1, characterized in that, the supporting shoe (13) of vertical setting is all welded at the both ends at support base (6) top, supporting shoe (13) and thermostated container main part (1) sliding connection, the left side welding of thermostated container main part (1) has locating piece (14) of horizontal setting, vertical setting's sliding tray (15) is seted up at the middle part of supporting shoe (13), locating piece (14) and screw thread post (4) sliding tray establish in the inside of sliding tray (15), the top threaded connection of supporting shoe (13) has bolt (16) of horizontal setting, a plurality of thread grooves (17) have been seted up along vertical in the both sides of thermostated container main part (1), bolt (16) and thread groove (17) screw-thread fit work.

4. The premature infant incubator according to claim 1, wherein a transversely-arranged limiting block (18) is welded on the top of the threaded sleeve (5), a transversely-arranged limiting groove (19) is formed in the inner wall of the top of the mounting cavity (3), and the limiting block (18) is slidably connected inside the limiting groove (19).

5. The premature infant incubator according to claim 1, wherein the connecting mechanism comprises connecting grooves (20), a sliding block (21), a fixing block (22), a fixing groove (23) and a return spring (24), the connecting grooves (20) are arranged at two ends of the mounting block (8), the sliding block (21) is slidably connected inside the connecting grooves (20), the fixing block (22) is welded at one side of the sliding block (21) far away from the linkage block (9), the fixing groove (23) is arranged on the inner wall of two ends of the mounting groove (7), one end of the fixing block (22) far away from the sliding block (21) is movably sleeved inside the fixing groove (23), the return spring (24) is arranged inside the fixing groove (23), one end of the return spring (24) is welded on the inner wall of the fixing groove (23), the other end of the return spring (24) is welded on the sliding block (21), the fixed block (22) is movably sleeved inside the connecting groove (20).

6. The premature infant incubator according to claim 5, wherein a vertically arranged shifting block (25) is welded to the top of the sliding block (21), and the shifting block (25) is slidably sleeved inside the connecting groove (20).