CN211356500U

CN211356500U - Engaging mechanism, rotating module applying same and operating table

Info

Publication number: CN211356500U
Application number: CN201921752669.0U
Authority: CN
Inventors: 扈钧; 邓子林; 谢超群
Original assignee: Shenzhen Comen Medical Instruments Co Ltd
Current assignee: Shenzhen Comen Medical Instruments Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-08-28
Anticipated expiration: 2029-10-17

Abstract

The utility model provides a nibbling tight mechanism, applied this rotation module and operation table of nibbling tight mechanism provides an operation table, and operation table rotates the module including rotating the module, first module, second module and nibbling tight mechanism including rotating the module, wherein, nibbling tight mechanism and include: the self-locking wrench comprises a base, a shaft body, a meshing assembly and a self-locking wrench; the base is provided with a first shaft seat and a second shaft seat, and the meshing assembly comprises a first meshing block, a second meshing block and a first elastic piece; the self-locking wrench comprises a wrench body, a second elastic piece and a button, the wrench body comprises a hinged portion and a handle connected to the hinged portion, the peripheral surface of the hinged portion is provided with a first limit surface and a second limit surface which are adjacent to each other, and one side of the button close to the end portion of the shaft body protrudes to form a butting portion. The button is pressed, the self-locking spanner is adjusted to enable the abutting part to move to the end part of the shaft body, and the meshing mechanism can be kept stable when being collided; the self-locking spanner is adjusted to enable the second limiting surface to face the second meshing block, so that the meshing mechanism can keep quiet in the adjusting process.

Description

Engaging mechanism, rotating module applying same and operating table

Technical Field

This use is novel belongs to medical instrument technical field, especially relates to an nibble tight mechanism, uses this rotation module and operation table of nibbling tight mechanism.

Background

The operation bed is also called as an operation table, can support a patient in the operation process, can adjust the body position according to the operation requirement, provides a convenient operation environment for a doctor, and belongs to basic equipment of an operation room. The operation table is formed by the combination of the module of a plurality of different functions usually, and these modules include support, seat, first board, put hand board, leg board and foot board etc. usually, and the seat bears in the support top for support human waist, the one end at the seat is connected to the first board, be used for supporting human head, put the both sides that the hand board is connected at the seat, be used for supporting human hand, the other end at the seat is connected to the leg board, be used for supporting human shank, the foot board sets up on the leg board, be used for bearing the foot.

In some cases, it is necessary to rotate the hand plate, the leg plate, etc. relative to the seat plate, in the related art, the hand plate and the leg plate are usually connected to the seat plate through a fastening mechanism, the fastening mechanism usually includes a wrench, a shaft body and two engaging blocks, the adjacent sides of the two engaging blocks are provided with engaging teeth which are matched with each other, but the fastening mechanism in the prior art is easy to interfere with each other to generate noise during use, and after the angle of the hand plate, the leg plate, etc. is adjusted and the wrench is locked, the wrench is easy to loosen when being collided to loosen the two engaging blocks, so that the hand plate or the leg plate, etc. relative to the seat plate rotates, and therefore, the fastening mechanism in the prior art cannot well meet the use requirements of the operating table.

SUMMERY OF THE UTILITY MODEL

This use novel technical problem that solve lies in providing one kind and nibbles tight mechanism, uses this rotation module and operation table that nibbles tight mechanism, is difficult for sending the noise and difficult not hard up because of the collision when locking state when rotating, can adapt to the user demand of operation table more.

In order to solve the above technical problem, the utility model is realized like this, a kind of nibbling tight mechanism includes: the method comprises the following steps: the self-locking wrench comprises a base, a shaft body, a meshing assembly and a self-locking wrench; the base is provided with a first shaft seat and a second shaft seat, a gap is formed between the first shaft seat and the second shaft seat, one end of the shaft body is fixedly connected with the first shaft seat, the meshing assembly comprises a first meshing block, a second meshing block and a first elastic element, the first meshing block is rotatably assembled on the shaft body and close to the first shaft seat, the second meshing block is assembled on the shaft body and close to the second shaft seat, one side of the first meshing block close to the second shaft seat and one side of the second meshing block close to the first shaft seat are provided with meshed teeth matched with each other, the first elastic piece is arranged between the first engaging block and the second engaging block, two ends of the first elastic piece are respectively connected with the first engaging block and the second engaging block, the elastic piece is used for providing elastic force for enabling the second engaging block to be away from the first engaging block; the self-locking wrench comprises a wrench body, a second elastic piece and a button, the wrench body comprises a hinged part and a handle connected with the hinged part, the other end of the shaft body is connected with the second shaft seat, the hinged part is hinged at the other end of the shaft body, the peripheral surface of the hinge part is provided with a first limit surface and a second limit surface which are adjacent, the distance from the first limit surface to the rotating shaft of the hinge part is greater than the distance from the second limit surface to the rotating shaft, the first limit surface and the second limit surface are used for abutting against the second meshing block, the button is rotationally connected with the hinge part, one side of the button close to the end part of the shaft body is protruded to form a top abutting part, the second elastic part is arranged between the button and the hinged part, the second elastic piece provides elastic force for enabling the button to rotate relative to the hinged part so as to enable the abutting part to move towards the direction close to the end part of the shaft body.

Furthermore, the shaft body of the shaft body protrudes outwards in the radial direction to form a limiting shaft shoulder, the first meshing block is located on one side, close to the first shaft seat, of the limiting shaft shoulder, the limiting shaft shoulder is used for preventing the first meshing block from moving towards the direction close to the second shaft seat, and the second meshing block is located on one side, close to the second shaft seat, of the limiting shaft shoulder.

Furthermore, the first meshing block is provided with a first shaft hole, a first step groove coaxial with the first shaft hole is formed in the position, close to the second meshing block, of the inner wall of the first shaft hole, the shaft body penetrates through the first shaft hole, and the limiting shaft shoulder is accommodated in the first step groove.

The meshing component further comprises a top abutting plate, a top abutting block and a transmission part, the second meshing block is provided with a second shaft hole, the shaft body penetrates through the second shaft hole, a second step groove is formed in the position, close to the second shaft seat, of the inner wall of the second shaft hole, the top abutting plate is sleeved outside the shaft body and embedded in the second step groove, the elastic part is located between the limiting shaft shoulder and the top abutting plate, the top abutting block is sleeved outside the shaft body and abutted against the side, close to the second shaft seat, of the second meshing block, the transmission part comprises a base body and a transmission foot extending from the base body, the base body is sleeved on the shaft body and located between the top abutting block and the wrench, and the transmission foot penetrates through the top abutting block and abuts against one side, far away from the second meshing block, of the top abutting plate.

Furthermore, a limiting edge with an extending direction parallel to the extending direction of the shaft body is arranged on the periphery of the abutting block, a second assembly hole is formed in the second shaft seat, a limiting groove corresponding to and matched with the limiting edge is formed in the inner wall of the second assembly hole, the abutting block is assembled in the second assembly hole in a sliding mode, and the limiting edge is connected in the limiting groove in a sliding mode; the peripheral wall of the second stepped groove is sunken to form a clamping and embedding groove corresponding to and matched with the limiting rib, and the limiting rib is partially clamped and embedded in the clamping and embedding groove.

Furthermore, the meshing assembly further comprises a propping block and a transmission part, the propping block is sleeved outside the shaft body and fixed on the side, close to the second meshing block, of the second shaft seat, the second meshing block is in sliding connection with the propping block in the extending direction of the shaft body, the wrench is hinged at one end, close to the second shaft seat, of the shaft body, the transmission part comprises a base body and a transmission foot extending from the base body, the base body is sleeved outside the shaft body and located between the wrench and the propping block, and the transmission foot penetrates through the propping block and abuts against the side, close to the second shaft seat, of the second meshing block at the end part of the transmission foot.

Furthermore, a second shaft hole is formed in the second meshing block, the shaft body penetrates through the second shaft hole, a second stepped groove is formed in the position, close to the second shaft seat, of the inner wall of the second shaft hole, the transmission foot abuts against the bottom of the second stepped groove, the abutting block is partially embedded into the second stepped groove, a limiting edge is arranged on the peripheral side of the abutting block, the extending direction of the limiting edge is parallel to the extending direction of the shaft body, a clamping groove corresponding to and matched with the limiting edge is formed in the peripheral wall of the second stepped groove in a concave mode, and the limiting edge is assembled in the clamping groove in a sliding mode.

Furthermore, the first meshing block is provided with a first shaft hole, a first step groove coaxial with the first shaft hole is formed in the position, close to the second meshing block, of the inner wall of the first shaft hole, the shaft body penetrates through the first shaft hole, a connecting groove is formed in the side, close to the first meshing block, of the second meshing block, the connecting groove corresponds to the first step groove, one end, close to the first meshing block, of the elastic piece is arranged in the first step groove, and the other end of the elastic piece is arranged in the connecting groove.

Furthermore, the hinge portion is far away from the shaft body and is laterally recessed to form an assembly groove, an opening is formed in the bottom of the assembly groove and corresponds to the end portion of the shaft body, first connecting holes are formed in two inner walls, opposite to the assembly groove, of the assembly groove, second connecting holes are formed in the corresponding positions of the buttons, the meshing mechanism further comprises a connecting shaft, the buttons are embedded in the assembly groove, the connecting shaft penetrates through the first connecting holes and the second connecting holes, the second elastic piece and the abutting portion are located on two sides of the connecting shaft respectively, and the abutting portion faces the opening.

Furthermore, a first positioning hole is formed in the bottom of the assembly groove, a second positioning hole corresponding to the first positioning hole is formed in the bottom side, facing the assembly groove, of the button, and two ends of the second elastic piece are embedded in the first positioning hole and the second positioning hole respectively.

Furthermore, the abutting portion comprises a sliding surface and an abutting surface, the sliding surface is smoothly connected with the abutting surface, the sliding surface is located on the side, close to the second elastic piece, of the abutting surface, the abutting surface is a plane, and the abutting surface is parallel to the extending line of the connecting shaft.

Further, the first limiting surface is perpendicular to the second limiting surface; the first limiting surface is connected with the second limiting surface through a smooth transition surface.

Furthermore, the hinged portion extends towards the shaft body side to form two connecting seats, a gap is formed between the two connecting seats, the two connecting seats are respectively provided with a first shaft hole with the axis on the same straight line, a second shaft hole with the axis perpendicular to the extending direction of the shaft body is formed in the position, close to the end portion, of the shaft body, the meshing mechanism further comprises a hinged shaft, the end portion of the shaft body is contained in the gap, and the hinged shaft penetrates through the first shaft hole and the second shaft hole.

Further, the one end of articulated shaft sets up spacing reason, spacing reason is followed the radial direction of articulated shaft extends outwards, with spacing reason corresponds the caulking groove is seted up to the connecting seat, spacing reason inlays in the caulking groove, the restriction groove is seted up to the week side of the articulated shaft other end, it still includes spacing gasket to mesh tight mechanism, spacing gasket has the card hole, spacing gasket passes through the card hole with restriction groove inlay card assembly.

Furthermore, the engagement assembly further comprises a protective sleeve, the protective sleeve comprises a sleeve and a butting edge formed by radially and outwards extending from one end edge of the sleeve, the protective sleeve is arranged at the end, close to the first shaft base end, of the first engagement block and/or the end, close to the second engagement block, of the first engagement block, the sleeve of the protective sleeve is sleeved outside the shaft body and connected with the first engagement block, and the butting edge of the protective sleeve is tightly attached to the end portion of the first engagement block.

Furthermore, the meshing assembly further comprises a first gasket, a second gasket and a locking screw, a first assembly hole is formed in the first shaft seat, the shaft body penetrates through the first assembly hole, the first gasket is sleeved outside the shaft body and located between the first meshing block and the first shaft seat, the second gasket is fixed to one end, close to the first shaft seat, of the shaft body through the locking screw, and the second gasket is located on one side, far away from the first meshing block, of the first shaft seat.

Further, a rotating module is provided, which comprises a first module, a second module and the engaging mechanism as described in any one of the above, wherein the first module is assembled with the first engaging block, and the second module is assembled with the base.

Further, an operating bed is provided, comprising the fastening mechanism as described in any one of the above.

This use novel well nibbling tight mechanism, use this rotation module and operation table of nibbling tight mechanism to compare with prior art, beneficial effect lies in:

the button is pressed, the handle is pulled to enable the hinge portion to rotate until the first limiting surface faces the second meshing block, the first limiting surface abuts against the second meshing block to enable the first meshing block and the second meshing block to be tightly meshed, the button is loosened, the button rotates under the action of the second elastic piece, the abutting portion is driven to move to the end portion of the shaft body, when the handle is collided, the abutting portion abuts against the end face of the end portion of the shaft body to prevent the wrench body from rotating, therefore, the meshing state of the meshing assembly is guaranteed, if the meshing assembly is loosened to adjust the angle, the button is pressed, the abutting portion is far away from the end portion of the shaft body, the handle is pulled to enable the hinge portion to rotate, the second limiting surface faces the second meshing block, the elastic force provided by the first elastic piece enables the second meshing block to be far away from the first meshing block, the meshing block and the second meshing block are separated, and the first meshing block and the second meshing block cannot interfere with each other when the angle is adjusted, therefore angle adjustment process is quieter, and the self-locking spanner of readjusting after angle adjustment is accomplished makes first spacing face support and can make the angle remain stable to second meshing piece, and the tight mechanism of nibbling of this scheme can keep quiet when angle adjustment, can be kept stable when being collided after angle adjustment is accomplished to guarantee to nibble mechanism's reliability, more can satisfy the user demand of operation table.

Drawings

Fig. 1 is a schematic view of an overall structure of an engaging mechanism in a first implementation manner of an embodiment of the present invention;

FIG. 2 is a sectional view of the tightening mechanism of FIG. 1 taken along the line A-A;

fig. 3 is a schematic perspective exploded view of an engaging mechanism in a first implementation manner of the embodiment of the present invention;

fig. 4 is a schematic overall structural diagram of a first engaging mechanism in a second implementation manner of the embodiment of the present invention;

FIG. 5 is a schematic view of the binding mechanism of FIG. 4 taken in section along the direction B-B;

fig. 6 is a schematic perspective exploded view of an engaging mechanism in a second implementation manner of the embodiment of the present invention;

fig. 7 is a schematic view of an overall structure of an engaging mechanism in a second implementation manner of the embodiment of the present invention;

FIG. 8 is a schematic structural view of the rear engagement mechanism of FIG. 7 taken along the direction C-C;

fig. 9 is a schematic perspective exploded view of a self-locking wrench and a shaft body according to a second implementation manner of the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a button in an embodiment of the present invention.

In the drawings, each reference numeral denotes: 1. a base; 11. a first shaft seat; 12. a second shaft base; 111. a first assembly hole; 121. a second assembly hole; 1211. a limiting groove; 2. a shaft body; 21. a limiting shaft shoulder; 3. an engagement assembly; 31. a first engagement block; 32. a second engagement block; 33. a propping block; 34. a transmission member; 35. abutting the top sheet; 36. a first elastic member; 37. a protective sleeve; 38. a first gasket; 39. a second gasket; 301. locking the screw; 302. a liner; 311. a first shaft hole; 321. a second shaft hole; 331. a limiting edge; 341. a substrate; 342. a transmission foot; 371. a sleeve; 372. abutting the flange; 3021. a first positioning sheet; 3022. a second positioning sheet; 3111. a first step groove; 3211. a second stepped groove; 32111. a clamping groove; 4. a self-locking wrench; 41. a wrench body; 42. a second elastic member; 43. a button; 44. hinging a shaft; 45. a limiting gasket; 46. a connecting shaft; 411. a hinge portion; 412. a handle; 431. a butting part; 432. a second positioning hole; 441. A limiting edge; 442. a limiting groove; 451. a clamping hole; 4111. a first limiting surface; 4112. a second limiting surface; 4113. a connecting seat; 4114. assembling a groove; 4311. a sliding surface; 4312. a butting surface; 41141. an opening; 41142. a first locating hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Example (b):

in this embodiment, the operation table comprises a rotation module, the rotation module comprises a first module, a second module and an engagement mechanism, wherein, as shown in fig. 1 to 10, the engagement mechanism comprises: the device comprises a base 1, a shaft body 2, a meshing component 3 and a self-locking wrench 4; the base 1 is provided with a first shaft seat 11 and a second shaft seat 12, a gap is formed between the first shaft seat 11 and the second shaft seat 12, one end of the shaft body 2 is fixedly connected to the first shaft seat 11, the meshing assembly 3 comprises a first meshing block 31, a second meshing block 32 and a first elastic piece 36, the first meshing block 31 is rotatably assembled on the shaft body 2 and close to the first shaft seat 11, the second meshing block 32 is assembled on the shaft body 2 and close to the second shaft seat 12, one side of the first meshing block 31 close to the second shaft seat 12 and one side of the second meshing block 32 close to the first shaft seat 11 are provided with meshing teeth which are matched with each other, the first elastic piece 36 is arranged between the first meshing block 31 and the second meshing block 32, two ends of the first elastic piece 36 are respectively connected with the first meshing block 31 and the second meshing block 32, and the elastic pieces are used for providing elastic force for enabling the second meshing block 32 to be far away from the first meshing block 31; the self-locking wrench 4 comprises a wrench body 41, the wrench body 41 comprises a hinge portion 411 and a handle 412 connected to the hinge portion 411, the other end of the shaft body 2 is connected to the second shaft seat 12, the hinge portion 411 is hinged to the other end of the shaft body 2, a first limiting surface 4111 and a second limiting surface 4112 which are adjacent to each other are arranged on the peripheral surface of the hinge portion 411, the distance from the first limiting surface 4111 to the rotating shaft of the hinge portion 411 is greater than the distance from the second limiting surface 4112 to the rotating shaft, the first limiting surface 4111 and the second limiting surface 4112 are used for abutting against the second engaging block 32, the button 43 is rotatably connected to the hinge portion 411, a top abutting portion 431 is formed by protruding one side of the button 43 close to the end portion of the shaft body 2, the second elastic member 42 is arranged between the button 43 and the hinge portion 411, and the second elastic member 42 provides elastic force for enabling the button 43 to rotate relative to the hinge portion 411 so that the; the first mold member, which may be a seat plate, is assembled with the first engaging block 31, and the second mold member, which may be a hand plate or a leg plate, is assembled with the base 1.

When the button 43 is pressed, the handle 412 is pulled to rotate the hinge portion 411 until the first limiting surface 4111 faces the second engaging block 32, the first limiting surface 4111 abuts against the second engaging block 32 to enable the first engaging block 31 and the second engaging block 32 to be tightly engaged, at this time, the button 43 is released, the button 43 rotates under the action of the second elastic member 42, the abutting portion 431 is driven to move to the end portion of the shaft body 2, when the handle 412 is collided, the abutting portion 431 abuts against the end surface of the end portion of the shaft body 2 to prevent the wrench body 41 from rotating, so as to ensure the engaging state of the engaging assembly 3, if the engaging assembly 3 is released to adjust the angle, the button 43 is pressed, at this time, the abutting portion 431 is far away from the end portion of the shaft body 2, then the handle 412 is pulled to rotate the hinge portion 411 to enable the second limiting surface 4112 to face the second engaging block 32, the elastic member 36 provides an elastic force to enable the second engaging block 32 to be far away from the first engaging block 31, make the rodent separation of first meshing block 31 and second meshing block 32, can not mutual interference between first meshing block 31 and the second meshing block 32 when angle regulation, consequently angle regulation process is quieter, readjust auto-lock spanner 4 after angle regulation is accomplished and make first spacing surface 4111 support and can make the angle remain stable to second meshing block 32, the tight mechanism of nibbling of this scheme can keep quiet when angle regulation, can keep stable when being collided after angle regulation is accomplished, thereby guarantee to nibble the reliability of mechanism, more can satisfy the user demand of operation table.

As shown in fig. 1 to 3, in a first implementation of the present embodiment:

in order to realize that the engagement mechanism is quiet when the hand plate or the leg plate rotates relative to the seat plate in the horizontal direction, the shaft body of the shaft body 2 protrudes in the radial outward direction to form a limiting shaft shoulder 21, the first engagement block 31 is positioned on one side of the limiting shaft shoulder 21 close to the first shaft seat 11, the limiting shaft shoulder 21 is used for blocking the first engagement block 31 from moving in the direction close to the second shaft seat 12, and the second engagement block 32 is positioned on one side of the limiting shaft shoulder 21 close to the second shaft seat 12. When the engaging mechanism is installed, the first engaging block 31 is located at a relatively high position, and when the first engaging block 31 and the second engaging block 32 need to be capable of rotating relatively, the self-locking wrench 4 is loosened, the second engaging block 32 slides towards a direction away from the first engaging block 31 under the driving of the first elastic piece 36, the engaging teeth of the first engaging block 31 and the second engaging block 32 are loosened, at the moment, the first engaging block 31 can abut against the limiting shaft shoulder 21, therefore, the first engaging block 31 cannot slide towards the second engaging block 32 along the shaft body 2 under the self gravity and the gravity of a carried module, the engaging teeth between the first engaging block 31 and the second engaging block 32 are ensured not to be interfered, and the engaging mechanism is kept quiet when being adjusted.

The first engaging block 31 is provided with a first shaft hole 311, a first step groove 3111 coaxial with the first shaft hole 311 is formed in the inner wall of the first shaft hole 311 near the second engaging block 32, the shaft body 2 penetrates through the first shaft hole 311, and the limiting shaft shoulder 21 is accommodated in the first step groove 3111; the engaging assembly 3 further includes two protecting sleeves 37, each protecting sleeve 37 includes a sleeve 371 and a supporting edge 372 extending radially outwards from one end edge of the sleeve 371, the two protecting sleeves 37 are respectively disposed at two ends of the first shaft hole 311, the sleeves 371 of the two protecting sleeves 37 are sleeved on the shaft body 2 and extend into the first shaft hole 311, the supporting edge 372 of the protecting sleeve 37 close to the first shaft seat 11 is embedded between the first engaging block 31 and the first shaft seat 11, and the supporting edge 372 of the protecting sleeve 37 close to the limiting shaft shoulder 21 is embedded between the limiting shaft shoulder 21 and the first engaging block 31. Spacing shaft shoulder 21 inlays in first step groove 3111, can make the assembly of first meshing piece 31 more stable, and two protective sheaths 37 are located between axis body 2 and the first meshing piece 31 to avoid the inner wall of first shaft hole 311 direct and the contact of axis body 2, can reduce wear, thereby improve life.

The engaging assembly 3 further includes a top abutting plate 35, a top abutting block 33 and a transmission member 34, the second engaging block 32 is provided with a second shaft hole 321, the shaft body 2 penetrates through the second shaft hole 321, a second step groove 3211 is provided at a position, close to the second shaft seat 12, of an inner wall of the second shaft hole 321, the top abutting plate 35 is sleeved outside the shaft body 2 and is embedded in the second step groove 3211, the elastic member is located between the limiting shaft shoulder 21 and the top abutting plate 35, the top abutting block 33 is sleeved outside the shaft body 2 and abuts against a side, close to the second shaft seat 12, of the second engaging block 32, the transmission member 34 includes a base body 341 and a transmission foot 342 extending from the base body 341, the base body 341 is sleeved outside the shaft body 2 and is located between the top abutting block 33 and the wrench, and the transmission foot passes through the top abutting block 33 and abuts against a side, far from the.

The second engaging block 32 is provided with a second shaft hole 321, the shaft body 2 penetrates through the second shaft hole 321, a second step groove 3211 is formed in a position, close to the second shaft seat 12, of an inner wall of the second shaft hole 321, the abutting piece 35 is sleeved outside the shaft body 2 and is embedded in the second step groove 3211, the first elastic element 36 is located between the limiting shaft shoulder 21 and the abutting piece 35, the abutting block 33 is sleeved outside the shaft body 2 and abuts against a side, close to the second shaft seat 12, of the second engaging block 32, the transmission element 34 comprises a base 341 and a transmission foot 342 extending from the base 341, the base 341 is sleeved outside the shaft body 2 and is located between the abutting block 33 and the self-locking wrench 4, and the transmission foot 342 penetrates through the abutting block 33 and abuts against a side, far from the second engaging block 32, of the abutting piece 35. Specifically, the inner diameter of the second shaft hole 321 is larger than the diameter of the corresponding position of the shaft body 2, so that the first elastic member 36 is located between the inner wall of the second shaft hole 321 and the shaft body 2, the first elastic member 36 adopts a spring, the abutting piece 35 is fixed with the second engaging block 32 through a screw, a through hole is formed in the middle of the abutting piece 35, the through hole is matched with the shaft body 2, and the shaft body 2 passes through the through hole, so that the second engaging block 32 is prevented from shaking in the radial direction relative to the shaft body 2, and the movement process of the second engaging block 32 is more stable; four transmission pins 342 extend from the transmission member 34, the four transmission pins 342 are arranged around the center of the base 341 at equal angular intervals, and openings for the transmission pins 342 to pass through are formed at corresponding positions of the top-abutting block 33.

A limiting edge 331 with an extending direction parallel to the extending direction of the shaft body 2 is arranged on the periphery of the abutting block 33, a limiting groove 1211 corresponding to and matched with the limiting edge 331 is formed in the inner wall of the second assembling hole 121, and the limiting edge 331 is connected in the limiting groove 1211 in a sliding manner; the peripheral wall of the second stepped groove 3211 is recessed to form a snap groove 32111 corresponding to and matching with the limiting edge 331, and the limiting edge 331 is partially snap-fitted in the snap groove 32111. Specifically, the circumference of the abutting block 33 is provided with four limiting edges 331 at equal intervals, correspondingly, the inner wall of the second assembly hole 121 is provided with four limiting grooves 1211 in one-to-one correspondence, the circumference of the second stepped groove 3211 is recessed to form four snap grooves 32111 in one-to-one correspondence, the limiting grooves 1211 can prevent the abutting block 33 from rotating and limit the abutting block 33 from sliding along the extending direction of the shaft body 2, and the limiting edges 331 are snap-fitted in the snap grooves 32111, so that the second engaging block 32 can be prevented from rotating around the shaft body 2, and the stability is improved.

As shown in fig. 4-6, in a second implementation of the present embodiment:

the first engaging block 31 is provided with a first shaft hole 311, a first step groove 3111 coaxial with the first shaft hole 311 is formed in the inner wall of the first shaft hole 311 close to the second engaging block 32, the shaft body 2 penetrates through the first shaft hole 311, and one end of the first elastic member 36 close to the first engaging block 31 is arranged in the first step groove 3111; a connecting groove is formed in the second engaging block 32 on a side close to the first engaging block 31, the connecting groove corresponds to the first step groove 3111, and the other end of the first elastic member 36 is disposed in the connecting groove. In this embodiment, the first elastic member 36 is a spring, the first elastic member 36 is sleeved on the shaft body 2, and two ends of the first elastic member 36 are respectively disposed in the first step groove 3111 and the connecting groove, so that the position of the first elastic member 36 is relatively stable, and the elastic function is more reliable. The engagement mechanism of this embodiment can be used to realize the rotation between the modules in the vertical direction, and the shaft body 2 is horizontally arranged when mounting, so that the first engagement block 31 and the second engagement block 32 do not move along the shaft body 2 due to gravity, and the elastic force provided by the first elastic member 36 can separate the first engagement block 31 and the second engagement block 32 when adjusting the angle, thereby ensuring the quietness of the adjustment process.

The engaging assembly 3 further includes a protective sleeve 37, the protective sleeve 37 includes a sleeve 371 and an abutting edge 372 extending radially outward from an end edge of the sleeve 371, the protective sleeve 37 is disposed on a side of the first engaging block 31 close to the first shaft seat 11, the sleeve 371 of the protective sleeve 37 is sleeved on the shaft body 2 and extends into the first shaft hole 311, and the abutting edge 372 is embedded between the first engaging block 31 and the first shaft seat 11. In this embodiment, the outer wall of the protective sleeve 37 is attached to the inner wall of the first shaft hole 311, the abutting edge 372 is fixedly assembled with the first engaging block 31 through a screw, the inner wall of the first shaft hole 311 can be prevented from directly rubbing against the shaft body 2 by the protective sleeve 37, and the abrasion of the first engaging seat can be reduced, so that the service life of the protective sleeve is prolonged.

The meshing assembly 3 further comprises a first gasket 38, a second gasket 39 and a locking screw 301, the first shaft seat 11 is provided with a first assembling hole 111, the shaft body 2 penetrates through the first assembling hole 111, the first gasket 38 is sleeved outside the shaft body 2 and is located between the first meshing block 31 and the first shaft seat 11, the second gasket 39 is fixed at one end, close to the first shaft seat 11, of the shaft body 2 through the locking screw 301, and the second gasket 39 is located on one side, away from the first meshing block 31, of the first shaft seat 11. Under the action of the first washer 38, the second washer 39 and the locking screw 301, one end of the shaft body 2 can be firmly fixed on the first shaft seat 11, and the first washer 38 and the second washer 39 can increase the force-bearing area, which is more reliable, the first washer 38 can isolate the protection sleeve 37 from the shaft seat to avoid direct friction between the protection sleeve 37 and the shaft seat, in this embodiment, the engaging assembly 3 further includes a lining 302, the lining 302 is fixedly assembled on the base 1, the lining 302 has a first positioning piece 3021, the first positioning piece 3021 is located between the first washer 38 and the first shaft seat 11, the first positioning piece 3021 is provided with a first positioning hole 41142, the first positioning hole 41142 has a first positioning edge, the first washer 38 extends towards the first positioning hole 41142 to form a first positioning block matching with the first positioning hole 41142, because the first positioning block is embedded in the first positioning hole 41142, the first washer 38 cannot rotate relative to the shaft body 2, and is more stable.

The engaging assembly 3 includes a supporting block 33 and a transmission member 34, the supporting block 33 is sleeved outside the shaft body 2 and fixed on the side of the second shaft seat 12 close to the second engaging block 32, the second engaging block 32 and the supporting block 33 are slidably connected in the extending direction of the shaft body 2, the self-locking wrench 4 is hinged at one end of the shaft body 2 close to the second shaft seat 12, the transmission member 34 includes a base body 341 and a transmission foot 342 extending from the base body 341, the base body 341 is sleeved outside the shaft body 2 and located between the self-locking wrench 4 and the supporting block 33, and the transmission foot 342 passes through the supporting block 33 and the end of the transmission foot 342 and supports against the side of the second engaging block 32 close to the second shaft seat 12.

The second meshing block 32 is provided with a second shaft hole 321, the shaft body 2 penetrates through the second shaft hole 321, a second stepped groove 3211 is formed in a position, close to the second shaft seat 12, of the inner wall of the second shaft hole 321, the transmission pin 342 abuts against the groove bottom of the second stepped groove 3211, the abutting block 33 is partially embedded into the second stepped groove 3211, a limiting edge 331 is arranged on the peripheral side of the abutting block 33, the extending direction of the limiting edge 331 is parallel to the extending direction of the shaft body 2, a clamping groove 32111 corresponding to and matched with the limiting edge 331 is formed in a recessed manner on the peripheral wall of the second stepped groove 3211, and the limiting edge 331 is slidably assembled in the clamping groove 32111. Specifically, four limiting edges 331 are equidistantly arranged on the peripheral side of the abutting block 33 at intervals, correspondingly, the peripheral wall of the second stepped groove 3211 is recessed to form four snap grooves 32111 corresponding to one another, because the limiting edges 331 are slidably assembled in the snap grooves 32111, when the second engaging block 32 slides along the shaft body 2, the limiting edges 331 can also relatively slide along the snap grooves 32111, and when the end portions of the limiting edges 331 abut against the groove bottom of the snap grooves 32111, the second engaging block 32 can be prevented from moving towards the direction close to the second shaft seat 12, so that the moving stroke of the second engaging block 32 is limited.

The lining 302 further has a second positioning piece 3022, the second positioning piece 3022 is located between the abutting block 33 and the second shaft seat 12, the second positioning piece 3022 defines a second positioning hole 432, the second positioning hole 432 has a second positioning edge, and the abutting block 33 extends toward the second positioning hole 432 to form a second positioning block matching with the second positioning hole 432. The second positioning block is fitted in the second positioning hole 432, so that the abutting block 33 does not rotate relative to the shaft body 2, and the limit rib 331 is fitted in the snap groove 32111, so that the second engaging block 32 cannot rotate relative to the abutting block 33, the second engaging block 32 cannot rotate relative to the shaft body 2 under the cooperation of both actions, and the first engaging block 31 can be fixed relative to the base 1 when the second engaging block 32 is engaged with the first engaging block 31.

In the first implementation manner and the second implementation manner of the present embodiment, the self-locking wrench 4 has a similar structure:

referring to fig. 2, 5, and 7-10, the hinge portion 411 is recessed away from the shaft body 2 to form an assembly groove 4114, an opening 41141 is formed at the bottom of the assembly groove 4114, the opening 41141 corresponds to the end of the shaft body 2, two inner walls of the assembly groove 4114 opposite to each other are provided with first connection holes, a corresponding position of the button 43 is provided with a second connection hole, the self-locking wrench 4 further includes a connection shaft 46, the button 43 is embedded in the assembly groove 4114, the connection shaft 46 penetrates through the first connection hole and the second connection hole, the second elastic member 42 and the abutting portion 431 are respectively located at two sides of the connection shaft 46, and the abutting portion 431 faces the opening 41141. In the process that the opening 41141 is communicated with the gap formed between the two connecting seats 4113, that is, when the shaft body 2 rotates relative to the hinge portion 411, when the first limiting surface 4111 faces the engaging element 3, the end surface of the end portion of the shaft body 2 faces the opening 41141, in this embodiment, the second elastic element 42 is a spring, and when the button 43 is pressed, the end corresponding to the second elastic element 42 can drive the abutting portion 431 to move in the direction away from the end portion of the shaft body 2, that is, the abutting portion 431 deviates in the direction toward the outer edge of the opening 41141, so that the abutting portion 431 deviates from the shaft body 2, and when the button 43 is released, under the elastic force of the second elastic element 42, the button 43 rotates to drive the abutting portion 431 to move in the direction close to the end portion of the shaft body 2, that is, that the abutting portion 431 moves in the direction toward the center of the opening 411.

The bottom of the assembling groove 4114 is provided with a first positioning hole 41142, the bottom of the button 43 facing the assembling groove 4114 is provided with a second positioning hole 432 corresponding to the first positioning hole 41142, and two ends of the second elastic member 42 are respectively embedded in the first positioning hole 41142 and the second positioning hole 432.

The abutting portion 431 includes a sliding surface 4311 and an abutting surface 4312, the sliding surface 4311 is smoothly connected to the abutting surface 4312, the sliding surface 4311 is located on the side of the abutting surface 4312 close to the second elastic element 42, and the abutting surface 4312 is parallel to the extending line of the connecting shaft 46. Specifically, the end of the shaft body 2 has a chamfered surface, when the wrench body 41 is rotated to make the first limiting surface 4111 face the engaging element 3, the end surface of the end of the shaft body 2 faces the opening 41141, the abutting portion 431 moves toward the inside of the opening 41141 under the elastic force of the second elastic member 42, in this process, the sliding surface 4311 and the chamfered surface can reduce the friction force between the shaft body 2 and the abutting portion 431, then the abutting surface 4312 faces the end surface of the shaft body 2, and the abutting surface 4312 abuts against the end surface of the shaft body 2 or has a slight gap, if the wrench body 41 is collided at this time, the end surface of the shaft body 2 abuts against the abutting surface 4312, thereby preventing the shaft body 2 from rotating relative to the hinge portion 411; when the button 43 is pressed, the abutting portion 431 deviates from the end surface of the shaft body 2, so that the shaft body 2 and the hinge portion 411 can rotate, when the wrench body 41 is rotated to enable the second limiting surface 4112 to face the engaging component 3, the button 43 is released, and the button 43 abuts against the peripheral wall of the shaft body 2 under the action of elastic force.

In this embodiment, the first limiting surface 4111 is perpendicular to the second limiting surface 4112, and the first limiting surface 4111 and the second limiting surface 4112 are connected by a smooth transition surface. Specifically, in this embodiment, the first limiting surface 4111 is parallel to the extending direction of the handle 412, the second limiting surface 4112 is perpendicular to the extending direction of the handle 412 and is located on the side of the hinge portion 411 away from the handle 412, that is, when the extending direction of the handle 412 is parallel to the extending direction of the shaft body 2, the first engaging block 31 and the second engaging block 32 are in a loose state, and when the extending direction of the handle 412 is perpendicular to the extending direction of the shaft body 2, the first engaging block 31 and the second engaging block 32 are in a tight engaging state, and a smooth transition surface can make the operation of switching the first limiting surface 4111 and the second limiting surface 4112 by the wrench body 41 more labor-saving.

The side of articulated portion 411 towards axis body 2 extends and forms two connecting seats 4113, forms the breach between two connecting seats 4113, and two connecting seats 4113 set up the axis respectively in collinear first shaft hole 311, and the tip department that is close to of axis body 2 sets up the second shaft hole 321 of the extending direction of axis perpendicular to axis body 2, and auto-lock spanner 4 still includes articulated shaft 44, and the tip holding of axis body 2 is in the breach, and articulated shaft 44 wears to locate in first shaft hole 311 and second shaft hole 321.

Spacing reason 441 is set up to the one end of articulated shaft 44, and spacing reason 441 extends outwards along the radial direction of articulated shaft 44, offers the caulking groove with connecting seat 4113 that spacing reason 441 corresponds, and spacing reason 441 inlays in the caulking groove, and the week side of the articulated shaft 44 other end offers restriction groove 442, and auto-lock spanner 4 still includes spacing gasket 45, and spacing gasket 45 has card hole 451, and spacing gasket 45 passes through card hole 451 and restriction groove 442 inlay card assembly. Specifically, restriction groove 442 is the ring channel coaxial with articulated shaft 44, the circular port that card hole 451 matches for having the breach and with restriction groove 442, the locating in card hole 451 both sides department of spacing gasket 45 has the extension foot respectively, spacing gasket 45 has elasticity, therefore, can open spacing gasket 45's card hole 451 through two extension feet, in order to connect spacing gasket 45 in the ring channel, spacing gasket 45 is located keeping away from axis body 2 side of corresponding connecting seat 4113, can prevent that articulated shaft 44 is not hard up under spacing reason 441 and spacing gasket 45's cooperation, make the connection between wrench body 41 and the axis body 2 more reliable and more stable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An engagement mechanism, comprising: the self-locking wrench comprises a base (1), a shaft body (2), a meshing component (3) and a self-locking wrench (4);

the base (1) is provided with a first shaft seat (11) and a second shaft seat (12), a gap is formed between the first shaft seat (11) and the second shaft seat (12), one end of the shaft body (2) is fixedly connected to the first shaft seat (11), the meshing assembly (3) comprises a first meshing block (31), a second meshing block (32) and a first elastic piece (36), the first meshing block (31) is rotatably assembled on the shaft body (2) and close to the first shaft seat (11), the second meshing block (32) is assembled on the shaft body (2) and close to the second shaft seat (12), one side of the first meshing block (31) close to the second shaft seat (12) and one side of the second meshing block (32) close to the first shaft seat (11) are provided with mutually matched teeth, and the first elastic piece (36) is arranged between the first meshing block (31) and the second meshing block (32) and between the first meshing block (32) and the first elastic piece (36) The two ends of the elastic piece are respectively connected with the first engaging block (31) and the second engaging block (32), and the elastic piece is used for providing elastic force for enabling the second engaging block (32) to be away from the first engaging block (31);

the self-locking wrench (4) comprises a wrench body (41), a second elastic piece (42) and a button (43), wherein the wrench body (41) comprises a hinge portion (411) and a handle (412) connected to the hinge portion (411), the other end of the shaft body (2) is connected with the second shaft seat (12), the hinge portion (411) is hinged to the other end of the shaft body (2), the peripheral surface of the hinge portion (411) is provided with a first limiting surface (4111) and a second limiting surface (4112) which are adjacent to each other, the distance from the first limiting surface (4111) to the rotating shaft of the hinge portion (411) is larger than the distance from the second limiting surface (4112) to the rotating shaft, the first limiting surface (4111) and the second limiting surface (4112) are used for abutting against the second engaging block (32), the button (43) is rotatably connected to the hinge portion (411), one side, close to the end portion of the shaft body (2), of the button (43) protrudes to form an abutting portion (431), the second elastic piece (42) is arranged between the button (43) and the hinged part (411), and the second elastic piece (42) provides elastic force for enabling the button (43) to rotate relative to the hinged part (411) so as to enable the abutting part (431) to move towards the direction close to the end part of the shaft body (2).

2. The tightening mechanism according to claim 1, characterized in that the shaft body of the shaft body (2) protrudes in a radially outward direction to form a limiting shoulder (21), the first engaging block (31) is located on a side of the limiting shoulder (21) close to the first shaft seat (11), the limiting shoulder (21) is used for blocking the first engaging block (31) from moving in a direction close to the second shaft seat (12), and the second engaging block (32) is located on a side of the limiting shoulder (21) close to the second shaft seat (12).

3. The engaging mechanism according to claim 2, wherein the first engaging block (31) is provided with a first shaft hole (311), a first step groove (3111) coaxial with the first shaft hole (311) is provided on an inner wall of the first shaft hole (311) near the second engaging block (32), the shaft body (2) is inserted into the first shaft hole (311), and the limiting shaft shoulder (21) is accommodated in the first step groove (3111).

4. The tightening mechanism according to claim 2, wherein the engagement assembly (3) further includes a top-supporting plate (35), a top-supporting block (33), and a transmission member (34), the second engagement block (32) has a second shaft hole (321), the shaft body (2) is inserted into the second shaft hole (321), a second step groove (3211) is formed in an inner wall of the second shaft hole (321) near the second shaft seat (12), the top-supporting plate (35) is sleeved outside the shaft body (2) and embedded in the second step groove (3211), the elastic member is located between the limiting shaft shoulder (21) and the top-supporting plate (35), the top-supporting block (33) is sleeved outside the shaft body (2) and supported against a side of the second engagement block (32) near the second shaft seat (12), the transmission member (34) includes a base body (341) and a transmission foot (342) extending from the base body (341), the base body (341) is sleeved on the shaft body (2) and located between the abutting block (33) and the wrench, and the transmission foot (342) penetrates through the abutting block (33) and abuts against one side, away from the second meshing block (32), of the abutting plate (35).

5. The tightening mechanism according to claim 4, wherein a limiting rib (331) having an extending direction parallel to the extending direction of the shaft body (2) is disposed on a peripheral side of the abutting block (33), the second shaft seat (12) is provided with a second assembly hole (121), a limiting groove (1211) corresponding to and matching with the limiting rib (331) is formed on an inner wall of the second assembly hole (121), the abutting block (33) is slidably assembled in the second assembly hole (121), and the limiting rib (331) is slidably connected in the limiting groove (1211);

the peripheral wall of the second stepped groove (3211) is recessed to form a clamping groove (32111) corresponding to and matching with the limiting edge (331), and part of the limiting edge (331) is clamped in the clamping groove (32111).

6. The engagement mechanism according to claim 1, wherein the engagement assembly (3) further includes an abutting block (33) and a transmission member (34), the abutting block (33) is sleeved outside the shaft body (2) and fixed on the side of the second shaft seat (12) close to the second engaging block (32), the second engaging block (32) is slidably connected with the abutting block (33) in the extending direction of the shaft body (2), the wrench is hinged at one end of the shaft body (2) close to the second shaft seat (12), the transmission member (34) includes a base body (341) and a transmission leg (342) extending from the base body (341), the base body (341) is sleeved outside the shaft body (2) and located between the wrench and the abutting block (33), the transmission leg (342) passes through the abutting block (33) and the end of the transmission leg (342) abuts against the second shaft seat (12) of the second engaging block (32) ) And (3) side.

7. The tightening mechanism according to claim 6, wherein the second engaging block (32) is provided with a second shaft hole (321), the shaft body (2) is inserted into the second shaft hole (321), a second stepped groove (3211) is provided on an inner wall of the second shaft hole (321) near the second shaft seat (12), the transmission leg (342) abuts against a groove bottom of the second stepped groove (3211), the abutting block (33) is partially embedded into the second stepped groove (3211), a limiting rib (331) having an extending direction parallel to the extending direction of the shaft body (2) is provided on a peripheral side of the abutting block (33), a snap-fit groove (32111) corresponding to and matching the limiting rib (331) is recessed in a peripheral wall of the second stepped groove (3211), and the limiting rib (331) is slidably fitted into the snap-fit groove (32111).

8. The tightening mechanism according to claim 6, characterized in that the first engaging block (31) is provided with a first shaft hole (311), a first step groove (3111) coaxial with the first shaft hole (311) is provided on an inner wall of the first shaft hole (311) near the second engaging block (32), the shaft body (2) is inserted into the first shaft hole (311), a connecting groove is provided on a side of the second engaging block (32) near the first engaging block (31), the connecting groove corresponds to the first step groove (3111), one end of the elastic member near the first engaging block (31) is provided in the first step groove (3111), and the other end of the elastic member is provided in the connecting groove.

9. The tightening mechanism according to any one of claims 1 to 8, the side of the hinge part (411) far away from the shaft body (2) is recessed to form a mounting groove (4114), an opening (41141) is formed in the bottom of the assembling groove (4114), the opening (41141) corresponds to the end part of the shaft body (2), two opposite inner walls of the assembling groove (4114) are provided with first connecting holes, the corresponding position of the button (43) is provided with a second connecting hole, the meshing mechanism further comprises a connecting shaft (46), the button (43) is embedded in the assembling groove (4114), the connecting shaft (46) is arranged in the first connecting hole and the second connecting hole in a penetrating way, the second elastic piece (42) and the abutting portion (431) are respectively located on two sides of the connecting shaft (46), and the abutting portion (431) faces the opening (41141).

10. The engaging mechanism according to claim 9, wherein a bottom of the assembling groove (4114) defines a first positioning hole (41142), a bottom of the button (43) facing the assembling groove (4114) defines a second positioning hole (432) corresponding to the first positioning hole (41142), and two ends of the second resilient member (42) are respectively inserted into the first positioning hole (41142) and the second positioning hole (432).

11. The tightening mechanism according to claim 9, wherein the abutting portion (431) comprises a sliding surface (4311) and an abutting surface (4312), the sliding surface (4311) and the abutting surface (4312) are smoothly connected, the sliding surface (4311) is located on the side of the abutting surface (4312) close to the second elastic member (42), the abutting surface (4312) is a plane, and the abutting surface (4312) is parallel to an extension line of the connecting shaft (46).

12. A tightening mechanism according to claim 9, wherein the first restraining surface (4111) is perpendicular to the second restraining surface (4112); the first limiting surface (4111) is connected with the second limiting surface (4112) through a smooth transition surface.

13. The tightening mechanism according to claim 9, wherein the hinge portion (411) extends toward the shaft body (2) to form two connecting seats (4113), a gap is formed between the two connecting seats (4113), the two connecting seats (4113) are respectively provided with a first shaft hole (311) having an axis in the same straight line, a second shaft hole (321) having an axis perpendicular to the extending direction of the shaft body (2) is provided at a position close to an end portion of the shaft body (2), the tightening mechanism further comprises a hinge shaft (44), the end portion of the shaft body (2) is received in the gap, and the hinge shaft (44) is inserted into the first shaft hole (311) and the second shaft hole (321).

14. The tightening mechanism according to claim 13, wherein a stopper edge (441) is provided at one end of the hinge shaft (44), the stopper edge (441) extends outward in a radial direction of the hinge shaft (44), the connecting seat (4113) corresponding to the stopper edge (441) is provided with an insertion groove, the stopper edge (441) is inserted into the insertion groove, a stopper groove (442) is provided at a peripheral side of the other end of the hinge shaft (44), the tightening mechanism further comprises a stopper gasket (45), the stopper gasket (45) has a locking hole (451), and the stopper gasket (45) is fitted with the stopper groove (442) through the locking hole (451).

15. The tightening mechanism according to claim 9, wherein the engagement assembly (3) further includes a protective sleeve (37), the protective sleeve (37) includes a sleeve (371) and an abutting edge (372) formed by extending radially outward from an end edge of the sleeve (371), the end of the first engagement block (31) close to the first shaft seat (11) and/or the end of the first engagement block (31) close to the second engagement block (32) is provided with the protective sleeve (37), the sleeve (371) of the protective sleeve (37) is sleeved outside the shaft body (2) and connected to the first engagement block (31), and the abutting edge (372) of the protective sleeve (37) abuts against an end of the first engagement block (31).

16. The tightening mechanism according to claim 9, wherein the engagement assembly (3) further includes a first gasket (38), a second gasket (39) and a locking screw (301), the first shaft seat (11) is provided with a first assembling hole (111), the shaft body (2) is disposed through the first assembling hole (111), the first gasket (38) is sleeved outside the shaft body (2) and located between the first engagement block (31) and the first shaft seat (11), the second gasket (39) is fixed to one end of the shaft body (2) close to the first shaft seat (11) through the locking screw (301), and the second gasket (39) is located on one side of the first shaft seat (11) away from the first engagement block (31).

17. A rotating module, characterized in that it comprises a first module, which is assembled with said first engagement block (31), a second module, which is assembled with said base (1), and a tightening mechanism according to any one of claims 1 to 16.

18. An operating bed, characterized in that it comprises a tightening mechanism according to any one of claims 1-17.