Pedal pump assembly and operating bed

Abstract

The utility model provides a pedal pump assembly and an operating bed, and the pedal pump assembly comprises a pump body, which is internally provided with a piston; one end of the piston rod is fixed on the piston and the other end extends out of the pump body; the return piece is connected to the piston rod and the pump body and used for providing return force for driving the piston rod to move in the first direction; the pedal assembly comprises a fixed seat and a pedal plate, and the pedal plate is rotationally connected to the fixed seat; and the connecting rod mechanism is connected to the pedal plate and the piston rod, the connecting rod mechanism is used for driving the piston rod to move in the second direction under driving of the pedal plate, and the second direction is opposite to the first direction. Through the connecting rod mechanism and the reset piece, the telescopic reciprocating motion of the piston rod is converted into pedal type portable operation, the transmission structure is simple, and the stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a foot pump component and an operating table. Background Art

[0002] A foot pump assembly is generally provided on the operating bed so that when the operating bed fails or there is a power outage, the bed can still move through foot-driven mechanical movement.

[0003] In the related art, the foot pedal of the foot pump assembly is connected to the piston rod by a cam as a transmission mechanism, and the piston rod makes a reciprocating motion by switching between the high position and the low position when the cam makes a circular motion, thereby realizing the pumping action of the foot pump. However, the cam as a transmission mechanism has poor stability, which affects the action of the operating table. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a foot pump assembly and an operating table, aiming to solve the problem of poor stability of the foot pump using a cam as a transmission mechanism in the related art.

[0005] In order to solve the above technical problems, the utility model provides a foot pump assembly in the first aspect, comprising:

[0006] A pump body, in which a piston is arranged;

[0007] A piston rod, one end of which is fixed to the piston and the other end of which extends out of the pump body;

[0008] A restoring member, connected to the piston rod and the pump body respectively, and used for providing a restoring force for driving the piston rod to move in a first direction;

[0009] A pedal assembly comprises a fixed seat and a foot pedal, wherein the foot pedal is rotatably connected to the fixed seat; and

[0010] A connecting rod mechanism is respectively connected to the foot pedal and the piston rod, and the connecting rod mechanism is used to drive the piston rod to move in a second direction under the drive of the foot pedal, and the second direction is opposite to the first direction.

[0011] Optionally, the connecting rod mechanism comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the piston rod, and the other end is hinged to the second connecting rod, and one end of the second connecting rod away from the first connecting rod is connected to the foot pedal;

[0012] Wherein, the rotating shaft between the first connecting rod and the piston rod, the rotating shaft between the first connecting rod and the second connecting rod, and the rotating shaft between the foot pedal and the fixing seat are parallel to each other.

[0013] Optionally, the foot pump assembly further comprises a first rotating shaft fixed to the fixing seat, the first rotating shaft passes through the foot pedal and the second connecting rod, and the foot pedal is rotatably connected to the first rotating shaft and connected to the second connecting rod.

[0014] Optionally, a second rotation axis is fixed to one end of the second connecting rod away from the foot pedal, the second rotation axis is parallel to the first rotation axis, and the first connecting rod is rotatably connected to the second rotation axis.

[0015] Optionally, the second connecting rod includes a connecting portion, a first side plate and a second side plate, the first side plate and the second side plate are fixed at opposite ends of the connecting portion and are spaced apart, the first rotating shaft and the second rotating shaft both pass through the first side plate and the second side plate, and the foot pedal and the first connecting rod are both embedded in the gap between the first side plate and the second side plate.

[0016] Optionally, a third rotation axis is fixed to the piston rod, and one end of the first connecting rod away from the second connecting rod is rotationally connected to the third rotation axis.

[0017] Optionally, a limiting cap is provided at one end of the piston rod away from the pump body, the return member is sleeved on the end of the piston rod extending out of the pump body, and two ends of the return member are respectively in contact with the limiting cap and the outer side of the pump body.

[0018] Optionally, the foot pedal is provided with a magnet.

[0019] Optionally, the pump body is provided with an oil inlet nozzle and an oil outlet nozzle which are interconnected, and the oil inlet nozzle and the oil outlet nozzle are located on the same side of the piston.

[0020] The second aspect of the utility model provides an operating bed, comprising a bed body and a foot pump assembly as described above, wherein the fixing seat is fixed to the bed body, the bed body is provided with a hydraulic oil circuit, and the pump body is connected to the hydraulic oil circuit.

[0021] Compared with the related art, a foot pump assembly and an operating bed in the utility model have the following beneficial effects: when the foot pedal is stepped on and rotated, the movable plug rod is driven to move in the second direction through the connecting rod mechanism, and the piston moves toward the inner side of the pump body under the push of the piston rod, so that the hydraulic oil in the pump body flows to the hydraulic oil circuit, thereby providing hydraulic power for the movement of the bed body, and at the same time, the return member is compressed; when the foot pedal is released, the piston rod moves in the first direction under the action of the return force provided by the return member, and the piston moves toward the outer side of the pump body under the pull of the piston rod, so that the pump body absorbs the hydraulic oil in the hydraulic oil circuit, thereby reducing the hydraulic power provided by the hydraulic oil circuit, so that the telescopic reciprocating motion of the piston rod is converted into a portable foot-operated operation through the connecting rod mechanism and the return member, and the transmission structure is simple and the stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a foot pump assembly provided by an embodiment of the utility model;

[0024] Figure 2 It is an exploded view of the foot pump assembly provided in the embodiment of the utility model.

[0025] In the accompanying drawings, the various reference numerals represent: 1. pump body; 11. oil inlet nozzle; 12. oil outlet nozzle; 2. piston rod; 21. limit cap; 3. return member; 4. pedal assembly; 41. fixed seat; 42. foot pedal; 421. raised portion; 5. connecting rod mechanism; 51. first connecting rod; 52. second connecting rod; 521. first side plate; 522. second side plate; 6. first rotating shaft; 7. second rotating shaft; 8. third rotating shaft; 9. magnet; 10. anti-slip pad; 20. sealing ring. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0029] Example:

[0030] An embodiment of the utility model provides an operating bed, comprising a bed body and a foot pump assembly, wherein the foot pump assembly is assembled on the bed body, the bed body is provided with a hydraulic oil circuit, the foot pump assembly is connected with the hydraulic oil circuit, so that oil is supplied to the hydraulic oil circuit through the foot pump assembly, thereby controlling the movement of the bed body.

[0031] See also Figure 1 and Figure 2 The foot pump assembly includes a pump body 1, a piston rod 2, a return member 3, a pedal assembly 4 and a connecting rod mechanism 5. A piston is arranged inside the pump body 1; one end of the piston rod 2 is fixed to the piston and the other end extends out of the pump body 1; the return member 3 is connected to the piston rod 2 and the pump body 1 respectively, and the return member 3 is used to provide a return force to drive the piston rod 2 to move in a first direction; the pedal assembly 4 includes a fixed seat 41 and a foot pedal 42, and the foot pedal 42 is rotatably connected to the fixed seat 41; the connecting rod mechanism 5 is connected to the foot pedal 42 and the piston rod 2 respectively, and the connecting rod mechanism 5 is used to drive the piston rod 2 to move in a second direction under the drive of the foot pedal 42, and the second direction is opposite to the first direction.

[0032] When the foot pedal 42 is stepped on and rotated, the movable piston rod is driven to move in the second direction through the connecting rod mechanism 5, and the piston moves toward the inner side of the pump body 1 under the push of the piston rod 2, so that the hydraulic oil in the pump body 1 flows to the hydraulic oil circuit, thereby providing hydraulic power for the movement of the bed, and at the same time, the return member 3 is compressed; when the foot pedal 42 is released, the piston rod 2 moves in the first direction under the action of the restoring force provided by the return member 3, and the piston moves toward the outer side of the pump body 1 under the pull of the piston rod 2, so that the pump body 1 absorbs the hydraulic oil in the hydraulic oil circuit, and then the hydraulic power provided by the hydraulic oil circuit is reduced, so that the telescopic reciprocating motion of the piston rod 2 is converted into a foot-operated portable operation through the connecting rod mechanism 5 and the return member, and the transmission structure is simple and the stability is good.

[0033] It should be noted that the fixing seat 41 is fixed to the bed body by screws, the pump body 1 and the connecting rod mechanism 5 are both arranged in the bed body, and the pump body 1 is fixed to the bed body by screws, and the foot pedal 42 is arranged outside the bed body.

[0034] See also Figure 1 and Figure 2 The connecting rod mechanism 5 includes a first connecting rod 51 and a second connecting rod 52. One end of the first connecting rod 51 is rotatably connected to the piston rod 2, and the other end is hinged to the second connecting rod 52. The end of the second connecting rod 52 away from the first connecting rod 51 is connected to the foot pedal 42. The rotating shaft between the first connecting rod 51 and the piston rod 2, the rotating shaft between the first connecting rod 51 and the second connecting rod 52, and the rotating shaft between the foot pedal 42 and the fixed seat 41 are parallel to each other. Specifically, when the foot pedal 42 is stepped on to rotate relative to the fixed seat 41, the second connecting rod 52 rotates with the foot pedal 42. Since the first connecting rod 51 is hinged to the second connecting rod 52, the second connecting rod 52 rotates and drives the first connecting rod 51 to rotate and move forward and backward, so that the piston rod 2 moves toward the inner side of the pump body 1 under the drive of the first connecting rod 51, and compresses the restoring member 3 at the same time. When the foot pedal 42 is released, the piston rod 2, the first connecting rod 51, the second connecting rod 52 and the foot pedal 42 are restored under the restoring force provided by the restoring member 3.

[0035] See also Figure 1 and Figure 2The foot pump assembly further includes a first rotating shaft 6 fixed to the fixing seat 41, the first rotating shaft 6 passes through the foot pedal 42 and the second connecting rod 52, and the foot pedal 42 is rotatably connected to the first rotating shaft 6 and connected to the second connecting rod 52. Specifically, the first rotating shaft 6 is a rotating shaft between the foot pedal 42 and the fixing seat 41, the fixing seat 41 is provided with a groove, and the two ends of the first rotating shaft 6 are respectively fixed to the opposite side walls of the groove; the foot pedal 42 is provided with a protrusion 421, the protrusion 421 extends into the groove, and the first rotating shaft 6 passes through the protrusion 421 of the foot pedal 42 to ensure that the foot pedal 42 rotates around the first rotating shaft 6; the protrusion 421 is connected to the second connecting rod 52 to ensure that the foot pedal 42 drives the second connecting rod 52 to rotate.

[0036] See also Figure 1 and Figure 2 The second connecting rod 52 is fixed with a second rotating shaft 7 at one end away from the pedal 42. The second rotating shaft 7 is parallel to the first rotating shaft 6. The first connecting rod 51 is rotatably connected to the second rotating shaft 7. Specifically, the second rotating shaft 7 is a rotating shaft between the first connecting rod 51 and the second connecting rod 52. The first connecting rod 51 rotates around the second rotating shaft 7 to realize the hinge connection between the first connecting rod 51 and the second connecting rod 52. When the second connecting rod 52 rotates, the first connecting rod 51 can be driven to rotate. At the same time, the first connecting rod 51 has a forward and backward movement. According to actual needs, the first connecting rod 51 can be arc-shaped.

[0037] See also Figure 1 and Figure 2 The second connecting rod 52 includes a connecting portion, a first side plate 521 and a second side plate 522, the first side plate 521 and the second side plate 522 are fixed at opposite ends of the connecting portion and are spaced apart, the first rotating shaft 6 and the second rotating shaft 7 both pass through the first side plate 521 and the second side plate 522, and the footrest 42 and the first connecting rod 51 are both embedded in the gap between the first side plate 521 and the second side plate 522. Specifically, the protrusion 421 of the footrest 42 is embedded in the gap between the first side plate 521 and the second side plate 522, so that the footrest 42 can drive the second connecting rod 52 to rotate around the first rotating shaft 6; one end of the first connecting rod 51 close to the footrest 42 is embedded in the gap between the first side plate 521 and the second side plate 522, so that the second connecting rod 52 can drive the first connecting rod 51 to rotate around the second rotating shaft 7; wherein, the first rotating shaft 6 and the second rotating shaft 7 are spaced apart from the connecting portion, and the first rotating shaft 6 and the second rotating shaft 7 are parallel to each other.

[0038] See also Figure 1 and Figure 2The piston rod 2 is fixed with a third rotating axis 8, and the third rotating axis 8 is parallel to the second rotating axis 7. The end of the first connecting rod 51 away from the second connecting rod 52 is rotatably connected to the third rotating axis 8, so that the first connecting rod 51 rotates around the third rotating axis 8, thereby causing the first connecting rod 51 to drive the piston rod 2 to move forward and backward; wherein, the third rotating axis 8 and the second rotating axis 7 are respectively located at both ends of the first connecting rod 51.

[0039] See also Figure 1 and Figure 2 A limiting cap 21 is provided at one end of the piston rod 2 away from the pump body 1, and the return member 3 is sleeved on the end of the piston rod 2 extending outside the pump body 1, and the two ends of the return member 3 are respectively in contact with the limiting cap 21 and the outer side of the pump body 1, so that the return member 3 is compressed when the piston rod 2 moves toward the inner side of the pump body 1. According to actual needs, the return member 3 can be a spring, and the third rotating shaft 8 is fixed in the limiting cap 21.

[0040] See also Figure 1 and Figure 2 The foot pedal 42 is provided with a magnet 9, which is located on the board surface of the foot pedal 42 and can be fixed to the foot pedal 42 by screws. When the foot pump is not needed, the foot pedal 42 is rotated to fit the bed body, and the magnet 9 is automatically attracted to the bed body, thereby folding and storing the foot pump assembly to prevent it from interfering with the operator. According to actual needs, the board surface of the foot pedal 42 is fixed with an anti-skid pad 10, and the anti-skid pad 10 covers the magnet 9.

[0041] See also Figure 1 and Figure 2 The pump body 1 is provided with an oil inlet nozzle 11 and an oil outlet nozzle 12 which are interconnected, and the oil inlet nozzle 11 and the oil outlet nozzle 12 are located on the same side of the piston. When the foot pedal 42 is stepped on to rotate downward, the foot pedal 42 drives the second connecting rod 52 to rotate, and the first connecting rod 51 rotates following the second connecting rod 52, and the first connecting rod 51 has a sub-movement to move forward, the first connecting rod 51 drives the piston rod 2 to move in the first direction, and the piston moves toward the inner side of the pump body 1 under the drive of the piston rod 2, and the hydraulic oil in the pump body 1 flows to the hydraulic oil circuit through the oil outlet nozzle 12, thereby providing hydraulic power for the movement of the bed body, and at the same time, the return member 3 is compressed; when the foot pedal 42 is released, the piston rod 2 moves in the second direction under the action of the restoring force provided by the return member 3, and the piston moves toward the outer side of the pump body 1 under the pull of the piston rod 2, and the pump body 1 absorbs the hydraulic oil in the hydraulic oil circuit through the oil inlet nozzle 11, thereby reducing the hydraulic power provided by the hydraulic oil circuit, and at the same time, the first connecting rod 51 and the second connecting rod 52 are reset. According to actual needs, a sealing ring 20 is provided between the piston rod 2 and the pump body 1 to improve the sealing performance of the pump body 1 .

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foot pump assembly, characterized in that: include: A pump body, in which a piston is arranged; A piston rod, one end of which is fixed to the piston and the other end of which extends out of the pump body; A restoring member, connected to the piston rod and the pump body respectively, and used for providing a restoring force for driving the piston rod to move in a first direction; A pedal assembly comprises a fixing seat and a foot pedal, wherein the foot pedal is rotatably connected to the fixing seat; as well as, A connecting rod mechanism is respectively connected to the foot pedal and the piston rod, and the connecting rod mechanism is used to drive the piston rod to move in a second direction under the drive of the foot pedal, and the second direction is opposite to the first direction.

2. The foot pump assembly according to claim 1, characterized in that: The connecting rod mechanism comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the piston rod, and the other end is hinged to the second connecting rod, and one end of the second connecting rod away from the first connecting rod is connected to the foot pedal; Wherein, the rotating shaft between the first connecting rod and the piston rod, the rotating shaft between the first connecting rod and the second connecting rod, and the rotating shaft between the foot pedal and the fixing seat are parallel to each other.

3. The foot pump assembly according to claim 2, characterized in that: The foot pump assembly also includes a first rotating shaft fixed to the fixing seat, the first rotating shaft passes through the foot pedal and the second connecting rod, and the foot pedal is rotatably connected to the first rotating shaft and connected to the second connecting rod.

4. The foot pump assembly according to claim 3, characterized in that: A second rotating shaft is fixed to one end of the second connecting rod away from the foot pedal. The second rotating shaft is parallel to the first rotating shaft. The first connecting rod is rotatably connected to the second rotating shaft.

5. The foot pump assembly according to claim 4, characterized in that: The second connecting rod includes a connecting portion, a first side plate and a second side plate, the first side plate and the second side plate are fixed at opposite ends of the connecting portion and are spaced apart, the first rotating shaft and the second rotating shaft both pass through the first side plate and the second side plate, and the foot pedal and the first connecting rod are both embedded in the gap between the first side plate and the second side plate.

6. The foot pump assembly according to claim 2, characterized in that: The piston rod is fixed with a third rotating shaft, and one end of the first connecting rod away from the second connecting rod is rotatably connected to the third rotating shaft.

7. The foot pump assembly according to claim 1, characterized in that: A limiting cap is provided at one end of the piston rod away from the pump body, the return member is sleeved on the end of the piston rod extending out of the pump body, and two ends of the return member are respectively in contact with the limiting cap and the outer side of the pump body.

8. The foot pump assembly according to claim 1, characterized in that: The foot pedal is provided with magnetic steel.

9. The foot pump assembly according to claim 1, characterized in that: The pump body is provided with an oil inlet nozzle and an oil outlet nozzle which are communicated with each other, and the oil inlet nozzle and the oil outlet nozzle are located on the same side of the piston.

10. An operating table, characterized in that: It comprises a bed body and a foot pump assembly as described in any one of claims 1 to 9, wherein the fixing seat is fixed to the bed body, the bed body is provided with a hydraulic oil circuit, and the pump body is connected to the hydraulic oil circuit.

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