CN220256759U

CN220256759U - Pressing component and cardiopulmonary resuscitator

Info

Publication number: CN220256759U
Application number: CN202321946669.0U
Authority: CN
Inventors: 庞剑锋; 邓伟良; 王瑞强; 陆俊杰
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2023-12-29
Anticipated expiration: 2033-07-21

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a pressing component and a cardiopulmonary resuscitation machine. The pressing assembly comprises a pressing push rod, a pressing head, a radial threaded piece, an axial threaded piece and a clamp spring, wherein the pressing head comprises a rigid piece and a flexible piece, a slot, a perforation and a countersunk slot are formed in the rigid piece, one end of the pressing push rod is inserted into the slot, two first fastening holes are formed in the pressing head, a second fastening hole is formed in the pressing push rod, the radial threaded piece is arranged in the first fastening hole and the second fastening hole in a penetrating mode, and the radial threaded piece is in interference fit with the flexible piece; the push rod is pressed and is provided with a threaded hole extending along the axial direction of the push rod, the rod part of the axial threaded piece penetrates through the through hole and is in threaded fit with the threaded hole, the head part of the axial threaded piece is contained in the countersunk head groove, the side wall of the countersunk head groove is provided with a clamping groove, and the clamping spring is clamped in the clamping groove and is propped against the head part of the axial threaded piece. Therefore, the double safety connection of the pressing push rod and the pressing head is realized, and the safety of the pressing assembly is improved.

Description

Pressing component and cardiopulmonary resuscitator

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a pressing component and a cardiopulmonary resuscitation machine.

Background

Cardiopulmonary resuscitation machines are a type of device that mechanically replaces the manual effort to perform basic life support operations such as chest compressions, which can help patients resume spontaneous breathing and spontaneous circulation. The principle of the cardiopulmonary resuscitation machine is that the push rod is pressed by transmitting force to a human body through the pressing head.

The traditional cardiopulmonary resuscitation machine presses down push rod and presses down and adopts threaded connection or pin connection between the head, because press the head atress vibrations at cardiopulmonary resuscitation machine in-process and press down, after long-time use, press down the head with press down and come off and separate because of screw failure or pin, and then probably appear the circumstances of accidentally injuring the user, the security is lower.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: aiming at the problem that the prior cardiopulmonary resuscitation machine is easy to separate due to screw thread failure or pin falling between a pressing head and a pressing push rod after long-time use, the utility model provides a pressing component and a cardiopulmonary resuscitation machine.

In order to solve the technical problems, in one aspect, the embodiment of the utility model provides a pressing assembly, which comprises a pressing push rod, a pressing head, a radial threaded piece, an axial threaded piece and a clamp spring, wherein the pressing head comprises a rigid piece and a flexible piece wrapping the rigid piece, a slot, a perforation and a countersunk groove which are sequentially communicated along the axial direction of the pressing head are arranged on the rigid piece, the perforation extends along the axial direction of the pressing head, one end of the pressing push rod is inserted into the slot, two first fastening holes which are penetrated in the radial direction are arranged on the pressing head, a second fastening hole which is communicated with the first fastening holes is arranged on the pressing push rod, the radial threaded piece is penetrated in the first fastening holes and the second fastening holes, and the radial threaded piece is in interference fit with the flexible piece;

the push rod is pressed and is provided with a threaded hole extending along the axial direction of the push rod, the rod part of the axial threaded piece penetrates through the through hole and is in threaded fit with the threaded hole, the head of the axial threaded piece is contained in the countersunk head groove, the side wall of the countersunk head groove is provided with a clamping groove, and the clamping spring is clamped in the clamping groove and is propped against the head of the axial threaded piece.

Optionally, an anti-rotation structure is arranged between the pressing push rod and the rigid piece and used for preventing relative rotation between the pressing push rod and the pressing head.

Optionally, the push rod is pressed to have and inserts the insertion portion in the slot, the insertion portion is cylindricality, be provided with two parallel relative anti-rotation planes on the outer wall of insertion portion, the shape of slot with the shape adaptation of insertion portion, anti-rotation plane constitutes anti-rotation structure.

Optionally, the pressing head further comprises a blocking cover, a cover opening is formed in one side, far away from the pressing push rod, of the flexible piece, the cover opening is communicated with the countersunk groove, and the blocking cover is covered in the cover opening and used for protecting the axial threaded piece.

Optionally, the retaining cover comprises a plate part and a plurality of fixing parts formed by extending the plate part towards a direction close to the pressing push rod, a plurality of fixing holes are formed in the pressing head, and the fixing parts are plugged into the fixing holes.

Optionally, two radial screw members are provided, two second fastening holes are distributed along the radial interval of the pressing push rod, two second fastening holes are respectively communicated with two first fastening holes, and two radial screw members respectively penetrate into two second fastening holes.

Optionally, the rigid piece includes power transmission board and connection platform, the connection platform is by power transmission board's central point puts to press the axial both ends extension of head and form, slot, perforation and countersink setting are in on the connection platform, the flexible piece parcel the periphery of rigid piece is in order to form cylindricality and presses the head.

Optionally, the flexible member is integrally formed with the rigid member.

In the pressing assembly, in the radial direction, the radial threaded piece penetrates into the first fastening hole of the pressing head and the second fastening hole of the pressing push rod, the pressing head and the pressing push rod are fixed together by the radial threaded piece, and the flexible piece in interference fit with the radial threaded piece can clamp the radial threaded piece, so that the risk that the radial threaded piece falls off due to vibration of the pressing head is reduced. In the axial, axial screw is connected the push rod with pressing, and the jump ring withstands axial screw's head to restriction axial screw axial motion reduces the risk that axial screw becomes flexible drops, thereby realizes pressing the dual insurance of push rod and be connected, reduces the risk that the push rod drops because of vibrations, improves the security of pressing the subassembly.

In another aspect, an embodiment of the present utility model provides a cardiopulmonary resuscitation machine including the compression assembly described above.

Drawings

FIG. 1 is a schematic view of a pressing assembly according to an embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a longitudinal cross-sectional view of FIG. 1;

fig. 4 is an exploded view of the press head of fig. 1.

Reference numerals in the specification are as follows:

1. pressing the push rod; 11. an anti-rotation plane; 12. a second fastening hole; 2. pressing head; 21. a rigid member; 211. a force transfer plate; 212. a connection station; 213. a slot; 22. a flexible member; 23. a blocking cover; 231. a plate portion; 232. a fixing part; 24. a first fastening hole; 3. a radial screw; 4. an axial screw; 5. and (5) clamping springs.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model 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 for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a pressing assembly, which includes a pressing push rod 1, a pressing head 2, a radial screw member 3, an axial screw member 4, and a clip spring 5, wherein the pressing head 2 includes a rigid member 21 and a flexible member 22 that wraps the rigid member 21, a slot 213, a through hole, and a countersink groove that are sequentially communicated in the axial direction of the pressing head 2 are provided on the rigid member 21, and the through hole extends in the axial direction of the pressing head 2. One end of the push rod 1 is inserted into the slot 213, the push head 2 is provided with two first fastening holes 24 penetrating in the radial direction, the push rod 1 is provided with a second fastening hole 12 communicated with the first fastening holes 24, and the radial screw 3 is penetrated into the first fastening holes 24 and the second fastening holes 12 so as to connect the push head 2 with the push rod 1. Wherein, radial screw spare 3 and flexible piece 22 interference fit, flexible piece 22 can block the screw on the radial screw spare 3, plays the effect of screw thread gluing, reduces radial screw spare 3 because of the vibrations of pressing head 2 and become flexible risk that drops, and then firmly fixes pressing head 2 on pressing push rod 1.

The push rod 1 is provided with a threaded hole extending along the axial direction thereof, and the rod part of the axial screw 4 penetrates through the through hole and is in threaded fit with the threaded hole so as to fix the push rod 1 and the push head 2 together. The head of the axial screw 4 is accommodated in the countersunk head groove, a clamping groove is arranged on the side wall of the countersunk head groove, and the clamping spring 5 is clamped in the clamping groove and props against the head of the axial screw 4 so as to prevent the axial screw 4 from moving along the axial direction to loosen and fall off when the pressing head 2 vibrates.

Moreover, the radial screw member 3 and the axial screw member 4 can interact, and since the axial screw member 4 is in threaded connection with the push rod 1, the axial screw member 4 can limit the relative movement between the push rod 1 and the push head 2 in the axial direction, so that the radial force born by the radial screw member 3 is reduced, and the service life is prolonged. Meanwhile, the radial screw 3 can limit the relative rotation between the push rod 1 and the push head 2, so that the risk that the axial screw 4 loosens and falls off due to the circumferential rotation of the push rod 1 is reduced.

In the pressing assembly, in the radial direction, the radial screw 3 penetrates into the first fastening hole 24 of the pressing head 2 and the second fastening hole 12 of the pressing push rod 1, the pressing head 2 and the pressing push rod 1 are fixed together by the radial screw 3, and the radial screw 3 can be clamped by the flexible piece 22 in interference fit with the radial screw 3, so that the risk of falling off of the radial screw 3 due to vibration of the pressing head 2 is reduced. In the axial, the axial screw 4 is connected the press head 2 and is pressed push rod 1, and jump ring 5 withstands the head of axial screw 4 to restriction axial screw 4 axial motion reduces the not hard up risk that drops of axial screw 4, thereby realizes pressing push rod 1 and pressing the dual insurance of head 2 and is connected, reduces the risk that press head 2 drops because of vibrations, improves the security of pressing the subassembly.

In an embodiment, an anti-rotation structure is disposed between the push rod 1 and the rigid member 21, so as to prevent relative rotation between the push rod 1 and the rigid member 21, so as to reduce the radial force applied to the radial screw member 3, and reduce the risk of shearing the radial screw member 3 due to excessive radial force applied.

In one embodiment, the push rod 1 has an insertion portion inserted into the insertion slot 213, the insertion portion is cylindrical, two parallel opposite anti-rotation planes 11 are disposed on an outer wall of the insertion portion, and the shape of the insertion slot 213 is adapted to the shape of the insertion portion, and the anti-rotation planes 11 form an anti-rotation structure. The insertion part is formed by cutting two parallel opposite anti-rotation planes 11 on the outer wall of the cylinder, and has simple structure and convenient processing.

In an embodiment, the pressing head 2 further includes a blocking cover 23, a cover opening is disposed on a side, away from the pressing push rod 1, of the flexible member 22, the cover opening is communicated with the countersunk groove, and the blocking cover 23 is covered in the cover opening and is used for protecting the axial screw 4, so as to prevent the axial screw 4 from being exposed and fluctuated on a human body after the flexible member 22 is deformed when the pressing head 2 presses the human body.

In one embodiment, the blocking cover 23 includes a plate 231 and a plurality of fixing portions 232 formed by extending the plate 231 in a direction approaching the push rod 1, and a plurality of fixing holes are provided in the push head 2, and the fixing portions 232 are inserted into the fixing holes.

In one embodiment, as shown in fig. 4, the fixing portion 232 includes a circular truncated cone portion and a cylindrical portion connected to the plate portion 231, a large diameter end of the circular truncated cone portion is connected to one end of the cylindrical portion, and a diameter of the large diameter end of the circular truncated cone portion is larger than a diameter of the cylindrical portion. Correspondingly, each fixing hole comprises a big hole section arranged on the rigid piece 21 and a small hole section arranged on the flexible piece 22, the diameter of the big diameter end of the round platform part is larger than that of the small hole section and smaller than that of the big hole section, so that the round platform part can be plugged into the small hole section and enter the big hole section by utilizing the elastic deformation capability of the flexible material of the round platform part, and the round platform part and the flexible piece 22 are in stop fit in the axial direction of the pressing head 2 so as to fix the stop cover 23 in the cover opening. When the cover 23 is required to be removed, the fixing portion 232 is pulled out of the fixing hole with a large force.

In one embodiment, three fixing portions 232 are provided, and the three fixing portions 232 are uniformly spaced apart in the circumferential direction of the pressing head 2.

In one embodiment, two radial screw members 3 are provided, two second fastening holes 12 are provided, the two second fastening holes 12 are distributed at intervals along the radial direction of the push rod 1, the two second fastening holes 12 are respectively communicated with the two first fastening holes 24, and the two radial screw members 3 respectively penetrate into the two second fastening holes 12. Two radial screw members 3 insert respectively in two second tight fixed orifices 12 from two directions, compare in the condition of only one radial screw member 3, two second tight fixed orifices 12 need not to link up and press push rod 1 for the processing degree of difficulty of second tight fixed orifice 12 reduces, the processing of being convenient for, reduction in processing cost.

In one embodiment, the rigid member 21 includes a force transmission plate 211 and a connection table 212, the connection table 212 is formed by extending from the center of the force transmission plate 211 to both axial ends of the pressing head 2, and a slot 213, a through hole and a countersink are provided on the connection table 212, and the flexible member 22 wraps the outer circumference of the rigid member 21 to form the columnar pressing head 2. By adopting the design, the rigid piece 21 and the pressing push rod 1 are fixedly connected, and meanwhile, the thickness of the force transmission plate 211 can be reduced, so that the weight of the pressing head 2 is reduced.

In one embodiment, the flexible member 22 is integrally formed with the rigid member 21.

In one embodiment, the flexible member 22 may be made of silica gel, rubber or other polymers with certain elastic properties, and the rigid member 21 may be made of metal alloy or composite materials, such as steel, copper, ceramic, etc.

In one embodiment, the axial screw 4 is a socket head cap screw.

In one embodiment, the radial screw 3 is a set screw. For example, using the set screw of M3, the second set hole 12 has a diameter of 3mm, the portion of the first set hole 24 at the rigid member 21 has a hole diameter of 3mm, and the portion of the first set hole 24 at the flexible member 22 has a hole diameter of 2.8mm, so that the flexible member 22 can clamp the screw on the set screw.

In other embodiments, a protrusion may be provided on the outer wall of the insertion portion, and correspondingly, a slot extending along the axial direction of the insertion portion may be provided on the slot wall of the slot 213, where the cross-sectional shape of the slot is the same as that of the protrusion, and when the push rod 1 is pressed to be inserted into the slot 213, the protrusion is blocked in the slot, and the protrusion is engaged with the rigid member 21 in a circumferential blocking manner, and the protrusion and the slot form the anti-rotation structure described above.

In other embodiments, the fixing portion 232 and the corresponding fixing hole may be omitted, and the plate portion 231 may be adhered into the cap opening by fixing glue.

In other embodiments, the rigid member 21 may include only the force transfer plate 211, and the thickness of the force transfer plate 211 may be increased appropriately to provide slots 213, perforations, and countersunk grooves of corresponding lengths in the force transfer plate 211.

In addition, an embodiment of the present utility model provides a cardiopulmonary resuscitation machine including the compression assembly of any of the above embodiments.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The pressing assembly is characterized by comprising a pressing push rod (1), a pressing head (2), a radial threaded piece (3), an axial threaded piece (4) and a clamp spring (5), wherein the pressing head (2) comprises a rigid piece (21) and a flexible piece (22) wrapping the rigid piece (21), a slot (213), a perforation and a countersunk groove which are sequentially communicated along the axial direction of the pressing head (2) are formed in the rigid piece (21), the perforation extends along the axial direction of the pressing head (2), one end of the pressing push rod (1) is inserted into the slot (213), two first fastening holes (24) which are penetrated in the radial direction are formed in the pressing head (2), a second fastening hole (12) which is communicated with the first fastening holes (24) is formed in the pressing push rod (1), the radial threaded piece (3) is arranged in the first fastening holes (24) and the second fastening holes (12) in a penetrating mode, and one end of the radial threaded piece (3) is matched with the flexible piece (22) in an interference mode.

The push rod (1) is provided with a threaded hole extending along the axial direction of the push rod, the rod part of the axial threaded piece (4) penetrates through the through hole and is in threaded fit with the threaded hole, the head of the axial threaded piece (4) is contained in the countersunk head groove, the side wall of the countersunk head groove is provided with a clamping groove, and the clamp spring (5) is clamped in the clamping groove and props against the head of the axial threaded piece (4).

2. The pressing assembly according to claim 1, characterized in that an anti-rotation structure is provided between the pressing push rod (1) and the rigid member (21) for preventing relative rotation between the pressing push rod (1) and the pressing head (2).

3. Pressing assembly according to claim 2, characterized in that the pressing push rod (1) has an insertion part inserted into the insertion groove (213), which insertion part is cylindrical, on the outer wall of which two parallel opposite anti-rotation planes (11) are provided, the shape of the insertion groove (213) being adapted to the shape of the insertion part, the anti-rotation planes (11) constituting the anti-rotation structure.

4. The pressing assembly according to claim 1, wherein the pressing head (2) further comprises a blocking cover (23), a cover opening is formed in the side, away from the pressing push rod (1), of the flexible piece (22), the cover opening is communicated with the countersunk groove, and the blocking cover (23) is sealed in the cover opening and used for protecting the axial threaded piece (4).

5. The pressing assembly according to claim 4, wherein the blocking cover (23) comprises a plate portion (231) and a plurality of fixing portions (232) formed by extending the plate portion (231) in a direction approaching the pressing push rod (1), a plurality of fixing holes are formed in the pressing head (2), and the fixing portions (232) are plugged into the fixing holes.

6. Pressing assembly according to claim 1, wherein two radial screws (3) are provided, two second fastening holes (12) are distributed at intervals along the radial direction of the pressing push rod (1), two second fastening holes (12) are respectively communicated with two first fastening holes (24), and two radial screws (3) are respectively penetrated into two second fastening holes (12).

7. Pressing assembly according to claim 1, characterized in that the rigid member (21) comprises a force transfer plate (211) and a connection table (212), the connection table (212) being formed by extending the central position of the force transfer plate (211) towards the two axial ends of the pressing head (2), the slot (213), the perforation and the countersink being arranged on the connection table (212), the flexible member (22) wrapping the periphery of the rigid member (21) to form a cylindrical pressing head (2).

8. A pressing assembly according to claim 7, wherein the flexible member (22) is integrally formed with the rigid member (21).

9. A cardiopulmonary resuscitation machine comprising a compression assembly according to any one of claims 1-8.