CN211356371U

CN211356371U - Self-locking wrench, engagement mechanism applying self-locking wrench and operating bed

Info

Publication number: CN211356371U
Application number: CN201921747708.8U
Authority: CN
Inventors: 邓子林; 扈钧; 谢超群; 严源利
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 self-locking spanner, a meshing mechanism applying the self-locking spanner and an operating bed, and provides an operating bed, wherein the operating bed comprises the meshing mechanism, the meshing mechanism comprises a shaft body, meshing subassembly and self-locking type spanner, self-locking type spanner includes the spanner body, elastic component and button, the spanner body includes articulated portion and connects in the handle of articulated portion, articulated portion articulates in the one end of axis body, articulated portion global has adjacent first spacing face and the spacing face of second, the distance of first spacing face to the axis of rotation of articulated portion is greater than the distance of the spacing face of second to the axis of rotation, the button rotates to be connected in articulated portion, the button is close to the protruding formation of one side of axis body tip and supports the top, the elastic component sets up between button and articulated portion, the elastic component provides and makes the relative articulated portion of button rotate so that support the top towards the elasticity of the direction motion near the axis body tip. The self-locking spanner of the scheme can be kept stable when being collided, so that the reliability of the meshing mechanism is guaranteed.

Description

Self-locking wrench, engagement mechanism applying self-locking wrench and operating bed

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a self-locking spanner, use this self-locking spanner's fastening mechanism and operation table.

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, the wrench is used for fastening or loosening the two engaging blocks, so that the hand plate, the leg plate, etc. are relatively fixed or rotatable with respect to the seat plate, in general, the operating table needs to keep the hand plate, the leg plate, etc. fixed with respect to the seat plate during use, but the wrench of the fastening mechanism in the prior art may loosen due to collision, so that the two engaging blocks of the fastening mechanism are loosened, which causes the hand plate, the leg plate, etc. to rotate with respect to the seat plate, and therefore, the wrench structure in the prior art makes the fastening mechanism not highly reliable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a meshing mechanism and an operating bed of self-locking spanner, applied this self-locking spanner are provided, the spanner can be kept stable when being collided to guarantee to mesh the reliability of tight mechanism.

In order to solve the technical problem, the utility model discloses a realize like this, provide a self-locking type spanner, be applied to and mesh tight mechanism, mesh tight mechanism include the axis body and with axis body movable assembly's meshing subassembly, self-locking type spanner includes: the wrench comprises a wrench body, an elastic piece and a button, wherein the wrench body comprises a hinged portion and a handle connected to the hinged portion, the hinged portion is hinged to one end of a shaft body, the peripheral surface of the hinged portion is provided with a first limiting surface and a second limiting surface which are adjacent, the distance from the first limiting surface to a rotating shaft of the hinged portion is larger than the distance from the second limiting surface to the rotating shaft, the first limiting surface and the second limiting surface are used for abutting against the meshing component, the button is rotatably connected to the hinged portion, one side, close to the end portion of the shaft body, of the button protrudes to form an abutting portion, the elastic piece is arranged between the button and the hinged portion, and the elastic piece provides elastic force which enables the button to rotate relative to the hinged portion so that the abutting portion moves towards the direction close to the end portion of the shaft body.

Further, the first limiting surface is perpendicular to the second limiting surface.

Furthermore, the first limiting surface and the second limiting surface are connected 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 self-locking wrench 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, spacing groove is seted up to the week side of the articulated shaft other end, self-locking spanner still includes spacing gasket, spacing gasket has the card hole, spacing gasket passes through the card hole with spacing groove inlay card assembly.

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 self-locking wrench 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 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 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 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, a self-locking type wrench as described in any one of the above is included.

Further, an operation table, includes any one above mentioned self-locking type spanner.

The utility model discloses well self-locking spanner, use this self-locking spanner's engaging mechanism and operation table compare with prior art, beneficial effect lies in:

the button is pressed, the handle is pulled to enable the hinge portion to rotate to the first limiting face towards the meshing component, the first limiting face abuts against the meshing component to enable the meshing component to be meshed tightly, the button is loosened at the moment, the button rotates under the action of the 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 can abut 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 component is guaranteed, if the meshing component is loosened, the button is pressed, the abutting portion can be far away from the end portion of the shaft body, the handle is pulled to enable the hinge portion to rotate, the second limiting face faces towards the meshing component, the meshing component is loosened, the self-locking wrench can be kept stable when being collided, and therefore the reliability of the meshing mechanism is guaranteed.

Drawings

Fig. 1 is a schematic structural view of a self-locking wrench and an engaging mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the self-locking wrench and the engaging mechanism after the wrench body is cut along the direction A-A in FIG. 1;

fig. 3 is a schematic perspective exploded view of the self-locking wrench and the shaft body according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a button in an embodiment of the present invention.

In the drawings, each reference numeral denotes: 01. a meshing mechanism; 10. a self-locking type wrench; 20. a shaft body; 30. an engagement assembly; 1. a wrench body; 11. a hinge portion; 12. a handle; 111. a first limiting surface; 112. a second limiting surface; 113. a connecting seat; 114. assembling a groove; 1141. an opening; 1142. a first positioning hole; 2. an elastic member; 3. a button; 31. a butting part; 32. a second positioning hole; 311. a sliding surface; 312. a butting surface; 4. hinging a shaft; 41. a limiting edge; 42. a limiting groove; 5. a limiting gasket; 51. a clamping hole; 6. and (7) connecting the shafts.

Detailed Description

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

Example (b):

in this embodiment, an operating table is provided, the operating table includes a seat plate and a head plate, a hand rest plate, a leg plate, etc. connected to the seat plate, the head plate, the hand rest plate, the leg plate, etc. are connected to the seat plate through a fastening mechanism 01, as shown in fig. 1-4, the fastening mechanism 01 includes a shaft body 20, a meshing component 30 movably assembled with the shaft body 20, and a self-locking wrench 10, the meshing component 30 is fastened by the self-locking wrench 10, wherein the self-locking wrench 10 includes a wrench body 1, an elastic member 2, and a button 3, the wrench body 1 includes a hinge portion 11 and a handle 12 connected to the hinge portion 11, the hinge portion 11 is hinged to one end of the shaft body 20, a peripheral surface of the hinge portion 11 has a first limiting surface 111 and a second limiting surface 112 that are adjacent to each other, a distance from the first limiting surface 111 to a rotating axis of the hinge portion 11 is greater than a distance from the second limiting surface 112 to the rotating axis, the first limiting surface 111 and the second limiting surface 112, the button 3 is rotatably connected to the hinge portion 11, one side of the button 3 close to the end portion of the shaft body 20 protrudes to form a butting portion 31, the elastic member 2 is disposed between the button 3 and the hinge portion 11, and the elastic member 2 provides an elastic force for rotating the button 3 relative to the hinge portion 11 to enable the butting portion 31 to move towards the direction close to the end portion of the shaft body 20.

When the button 3 is pressed and the handle 12 is pulled to rotate the hinge portion 11 until the first position-limiting surface 111 faces the engaging component 30, the first position-limiting surface 111 abuts against the engaging element 30 to make the engaging element 30 tightly engaged, at this time, the button 3 is released, the button 3 rotates under the action of the elastic element 2, the abutting part 31 is driven to move to the end part of the shaft body 20, when the handle 12 is collided, the abutting portion 31 abuts against the end face of the end portion of the shaft body 20 to prevent the wrench body 1 from rotating, therefore, the meshing state of the meshing component 30 is guaranteed, if the meshing component 30 is loosened, the button 3 is pressed, the abutting part 31 is far away from the end part of the shaft body 20, the handle 12 is pulled to rotate the hinging part 11, the second limiting surface 112 faces the meshing component 30, and the meshing component 30 is loosened, and the self-locking wrench 10 can be kept stable when being collided, so that the reliability of the meshing mechanism 01 is guaranteed.

The first position-limiting surface 111 is perpendicular to the second position-limiting surface 112, and the first position-limiting surface 111 and the second position-limiting surface 112 are connected by a smooth transition surface. Specifically, in the present embodiment, the first limiting surface 111 is parallel to the extending direction of the handle 12, the second limiting surface 112 is perpendicular to the extending direction of the handle 12 and is located on the side of the hinge portion 11 away from the handle 12, that is, when the extending direction of the handle 12 is parallel to the extending direction of the shaft body 20, the engaging component 30 is in a loose state, and when the extending direction of the handle 12 is perpendicular to the extending direction of the shaft body 20, the engaging component 30 is in a tight engaging state, and the smooth transition surface can make the operation of switching the first limiting surface 111 and the second limiting surface 112 by the wrench body 1 more labor-saving.

The hinge portion 11 extends towards the shaft body 20 to form two connecting seats 113, a gap is formed between the two connecting seats 113, the two connecting seats 113 are respectively provided with a first shaft hole with axes on the same straight line, a second shaft hole with an axis perpendicular to the extending direction of the shaft body 20 is arranged at the position, close to the end portion, of the shaft body 20, the self-locking wrench 10 further comprises an articulated shaft 4, the end portion of the shaft body 20 is contained in the gap, and the articulated shaft 4 penetrates through the first shaft hole and the second shaft hole.

The one end of articulated shaft 4 sets up spacing reason 41, and spacing reason 41 extends outwards along the radial direction of articulated shaft 4, offers the caulking groove with connecting seat 113 that spacing reason 41 corresponds, and spacing reason 41 inlays in the caulking groove, and spacing groove 42 is offered to the week side of the articulated shaft 4 other end, and self-locking type spanner 10 still includes spacing gasket 5, and spacing gasket 5 has card hole 51, and spacing gasket 5 is through calorie hole 51 and spacing groove 42 inlay card assembly. Specifically, spacing groove 42 is the ring channel coaxial with articulated shaft 4, the circular port of card hole 51 for having the breach and matcing with spacing groove 42, spacing gasket 5 lie in card hole 51 breach both sides department and have the extension foot respectively, spacing gasket 5 has elasticity, therefore, can open spacing gasket 5's card hole 51 through two extension feet, in order to connect spacing gasket 5 in the ring channel, spacing gasket 5 lies in the connecting seat 113 that corresponds and keeps away from axis body 20 side, can prevent that articulated shaft 4 is not hard up under spacing reason 41 and spacing gasket 5's cooperation, make the connection between wrench body 1 and the axis body 20 more reliable and more stable.

The side of the hinge portion 11, which is far away from the shaft body 20, is recessed to form an assembly groove 114, an opening 1141 is formed at the bottom of the assembly groove 114, the opening 1141 corresponds to the end portion of the shaft body 20, first connection holes are formed at two inner walls, which are opposite to the assembly groove 114, second connection holes are formed at corresponding positions of the button 3, the self-locking wrench 10 further comprises a connection shaft 6, the button 3 is embedded in the assembly groove 114, the connection shaft 6 is arranged in the first connection holes and the second connection holes in a penetrating manner, the elastic member 2 and the abutting portion 31 are respectively located at two sides of the connection shaft 6, and the abutting portion 31 faces the. The opening 1141 is communicated with the gap formed between the two connecting seats 113, that is, in the process of the rotation of the shaft body 20 relative to the hinge portion 11, when the first limiting surface 111 faces the engaging component 30, the end surface of the end portion of the shaft body 20 is aligned with the opening 1141, in this embodiment, the elastic component 2 is a spring, and the end of the button 3 corresponding to the elastic component 2 is pressed, so as to drive the abutting portion 31 to move in the direction away from the end portion of the shaft body 20, that is, the abutting portion 31 deviates in the direction of the outer edge of the opening 1141, so as to make the abutting portion 31 deviate from the shaft body 20, and when the button 3 is released, under the elastic force of the elastic component 2, the button 3 rotates to drive the abutting portion 31 to move in the direction close to the end portion of the shaft body 20, that is, the abutting portion 31 moves in.

The bottom of the assembly groove 114 is provided with a first positioning hole 1142, the bottom of the button 3 facing the assembly groove 114 is provided with a second positioning hole 32 corresponding to the first positioning hole 1142, and two ends of the elastic element 2 are respectively embedded in the first positioning hole 1142 and the second positioning hole 32.

Abutting part 31 comprises a sliding surface 311 and an abutting surface 312, sliding surface 311 and abutting surface 312 are smoothly connected, sliding surface 311 is located on the side of abutting surface 312 close to elastic element 2, and abutting surface 312 is parallel to the extending line of connecting shaft 6. Specifically, the end of the shaft body 20 has a chamfered surface, when the wrench body 1 is rotated to make the first limiting surface 111 face the engaging component 30, the end surface of the end of the shaft body 20 faces the opening 1141, the abutting portion 31 moves towards the inside of the opening 1141 under the elastic force of the elastic member 2, in this process, the sliding surface 311 and the chamfered surface can reduce the friction force between the shaft body 20 and the abutting portion 31, then the abutting surface 312 faces the end surface of the shaft body 20, the abutting surface 312 abuts against the end surface of the shaft body 20 or has a slight interval, if the wrench body 1 is collided at this time, the end surface of the shaft body 20 abuts against the abutting surface 312, thereby preventing the shaft body 20 from rotating relative to the hinge portion 11; when the button 3 is pressed, the abutting portion 31 deviates from the end surface of the shaft body 20, so that the shaft body 20 and the hinge portion 11 can rotate, when the wrench body 1 is rotated to make the second limiting surface 112 face the engaging component 30, the button 3 is released, and the button 3 abuts against the peripheral wall of the shaft body 20 under the action of elastic force.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A self-locking wrench, which is applied to a meshing mechanism (01), wherein the meshing mechanism (01) comprises a shaft body (20) and a meshing component (30) movably assembled with the shaft body (20), and the self-locking wrench (10) is characterized by comprising: the wrench comprises a wrench body (1), an elastic piece (2) and a button (3), wherein the wrench body (1) comprises a hinge part (11) and a handle (12) connected to the hinge part (11), the hinge part (11) is hinged to one end of a shaft body (20), the peripheral surface of the hinge part (11) is provided with a first limit surface (111) and a second limit surface (112) which are adjacent to each other, the distance from the first limit surface (111) to the rotating shaft of the hinge part (11) is greater than the distance from the second limit surface (112) to the rotating shaft, the first limit surface (111) and the second limit surface (112) are used for abutting against the meshing component (30), the button (3) is rotatably connected to the hinge part (11), one side of the button (3) close to the end part of the shaft body (20) protrudes to form an abutting part (31), and the elastic piece (2) is arranged between the button (3) and the hinge part (11), the elastic piece (2) provides elastic force for enabling the button (3) to rotate relative to the hinge part (11) so as to enable the abutting part (31) to move towards the direction close to the end part of the shaft body (20).

2. Self-locking spanner according to claim 1, wherein said first limit surface (111) is perpendicular to said second limit surface (112).

3. Self-locking spanner according to claim 2, wherein said first stop surface (111) and said second stop surface (112) are connected by a smooth transition surface.

4. The self-locking wrench as claimed in claim 1, wherein the hinge portion (11) extends toward the shaft body (20) to form two connecting seats (113), a gap is formed between the two connecting seats (113), the two connecting seats (113) are respectively provided with a first shaft hole having an axis on the same straight line, a second shaft hole having an axis perpendicular to the extending direction of the shaft body (20) is provided at a position close to the end portion of the shaft body (20), the self-locking wrench (10) further comprises a hinge shaft (4), the end portion of the shaft body (20) is received in the gap, and the hinge shaft (4) is inserted into the first shaft hole and the second shaft hole.

5. The self-locking wrench as claimed in claim 4, wherein a limiting rim (41) is provided at one end of the hinge shaft (4), the limiting rim (41) extends outward in a radial direction of the hinge shaft (4), the connecting seat (113) corresponding to the limiting rim (41) is provided with an embedding groove, the limiting rim (41) is embedded in the embedding groove, a limiting groove (42) is provided at a peripheral side of the other end of the hinge shaft (4), the self-locking wrench (10) further comprises a limiting gasket (5), the limiting gasket (5) is provided with a clamping hole (51), and the limiting gasket (5) is in clamping assembly with the limiting groove (42) through the clamping hole (51).

6. Self-locking spanner according to any one of claims 1 to 5, the side of the hinge part (11) far away from the shaft body (20) is recessed to form a fitting groove (114), an opening (1141) is formed at the bottom of the assembling groove (114), the opening (1141) corresponds to the end part of the shaft body (20), two opposite inner walls of the assembling groove (114) are provided with first connecting holes, the corresponding position of the button (3) is provided with a second connecting hole, the self-locking wrench (10) further comprises a connecting shaft (6), the button (3) is embedded in the assembling groove (114), the connecting shaft (6) is arranged in the first connecting hole and the second connecting hole in a penetrating way, the elastic piece (2) and the abutting portion (31) are respectively located on two sides of the connecting shaft (6), and the abutting portion (31) faces the opening (1141).

7. The self-locking wrench as claimed in claim 6, wherein a first positioning hole (1142) is formed at the bottom of the assembly slot (114), a second positioning hole (32) corresponding to the first positioning hole (1142) is formed at the bottom of the button (3) facing the assembly slot (114), and two ends of the elastic member (2) are respectively embedded in the first positioning hole (1142) and the second positioning hole (32).

8. The self-locking wrench according to claim 6, wherein the abutting portion (31) comprises a sliding surface (311) and an abutting surface (312), the sliding surface (311) and the abutting surface (312) are smoothly connected, the sliding surface (311) is located on the side of the abutting surface (312) close to the elastic member (2), the abutting surface (312) is a plane, and the abutting surface (312) is parallel to the extension line of the connecting shaft (6).

9. A tightening mechanism comprising a self-locking spanner as claimed in any one of claims 1 to 8.

10. An operating bed, characterized in that it comprises a self-locking spanner according to any one of claims 1-9.