A clutch anti-loosening structure and infusion pump

Abstract

The present invention belongs to the technical field of infusion pumps, and specifically discloses a clutch anti-loosening structure and an infusion pump, including a bracket and a clutch assembly, wherein the bracket is provided with a first clamping position and a second clamping position; the clutch assembly includes a transmission rod slidably matched with the bracket, a transmission gear provided on the transmission rod, a lever matched with the first clamping position and the second clamping position, and springs connected to the transmission rod and the lever at both ends. With this structural design, when the lever matches with the first clamping position or the second clamping position, the transmission rod can be driven to slide toward the driving side of the lever through the spring, so that when the transmission gear is meshed with the corresponding power input end, it can be better meshed under the action of the elastic force of the spring, and can also prevent the transmission gear from being loosened, misaligned, and other abnormalities when meshing with the corresponding power input end, so that power transmission can be more stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion pumps, and in particular to a clutch anti-loosening structure and an infusion pump. Background Art

[0002] The clutch used in the infusion pump in the related art, when the power is switched by the lever, the transmission gear arranged on the transmission rod lacks a certain elastic pressing force, and the transmission rod and the bracket slide together, so that the transmission gear is easily loosened during the meshing process with the gear at the power input end, and it is difficult to achieve automatic meshing between the transmission gear and the gear at the power input end, which makes the power transmission of the infusion pump very unstable when the power is switched. Summary of the invention

[0003] The object of the present invention is to provide a clutch anti-loosening structure and an infusion pump, wherein the clutch anti-loosening structure can stably and reliably realize power switching, prevent power interruption caused by clutch loosening, and then provide stable and reliable power for the infusion pump.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A clutch anti-loosening structure, comprising:

[0006] The bracket is provided with a first clamping position and a second clamping position;

[0007] The clutch assembly includes a transmission rod slidably matched with the bracket, a transmission gear fastened to the transmission rod, a lever matched with the first and second positions, and a spring sheet with two ends respectively connected to the transmission rod and the lever.

[0008] The first clamping position and the second clamping position are arranged through each other, and one side wall of the first clamping position and the second clamping position are arranged on the same plane.

[0009] The invention also includes a guide rod mounted on the bracket and arranged parallel to and spaced from the transmission rod, and a spring sleeved on the guide rod and having one end abutting against the shifting rod.

[0010] Wherein, the transmission rod is provided with a clamping block, and the clamping block is fastened to an end of the spring sheet away from the shifting rod.

[0011] Wherein, the transmission rod is provided with a driven gear, and the driven gear is meshed with the gear set of the driving mechanism.

[0012] An infusion pump comprises the above-mentioned clutch anti-loosening structure, the driving mechanism matched with the clutch anti-loosening structure, and an infusion pump power input end and an injection pump power input end respectively arranged on opposite sides of the clutch anti-loosening structure; the infusion pump power input end and the injection pump power input end are respectively meshed with the transmission gear of the clutch anti-loosening structure.

[0013] Among them, the transmission rod is set to slide back and forth along the length direction of the bracket, and the first transmission gear and the second transmission gear are respectively provided at both ends of the transmission rod, and the first transmission gear and the second transmission gear are respectively meshed with the corresponding infusion pump power input end and the injection pump power input end.

[0014] Wherein, the two driven gears are coaxially and integrally arranged at the roots of the first transmission gear and the second transmission gear, respectively, and the first transmission gear and the second transmission gear are both configured as crown gears.

[0015] Wherein, the two driven gears are both configured as spur gears.

[0016] Wherein, the driven gear is slidably meshed with the gear set of the driving mechanism along the axial direction.

[0017] The beneficial effects of the present invention are as follows: the present invention discloses a clutch anti-loosening structure and an infusion pump, including a bracket and a clutch assembly, wherein the bracket is provided with a first clamping position and a second clamping position; the clutch assembly includes a transmission rod slidably matched with the bracket, a transmission gear provided on the transmission rod, a lever matched with the first clamping position and the second clamping position, and springs connected to the transmission rod and the lever at both ends. With this structural design, when the lever matches with the first clamping position or the second clamping position, the transmission rod can be driven to slide toward the driving side of the lever through the spring, so that when the transmission gear is engaged with the corresponding power input end, a certain elastic pressing force is given to the transmission gear under the elastic force of the spring, thereby preventing the transmission gear from loosening, disengaging teeth, and other abnormalities when it is engaged with the corresponding power input end, thereby effectively improving the stability and reliability of the clutch power conversion, and then providing a stable and reliable power transmission for the infusion pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric diagram of a clutch anti-loosening structure in this embodiment;

[0019] Figure 2 yes Figure 1 Axonometric view after removing the bracket;

[0020] Figure 3 yes Figure 1 Axonometric view after assembly with infusion pump and syringe pump.

[0021] In the figure:

[0022] 101, bracket; 1011, first clamping position; 1012, second clamping position; 102, transmission rod; 103, first transmission gear; 104, second transmission gear; 105, lever; 106, spring; 107, guide rod; 108, spring; 109, driven gear;

[0023] 201, motor; 202, gear set;

[0024] 301. Power input terminal of infusion pump; 302. Power input terminal of injection pump. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] Figure 1is an axonometric diagram of a clutch anti-loosening structure in this embodiment, Figure 2 yes Figure 1 Axonometric drawing after removing bracket 101, combined with Figure 1 and Figure 2 As shown, this embodiment provides a clutch anti-loosening structure, which includes a bracket 101 and a clutch assembly mounted on the bracket 101, wherein the clutch assembly includes a transmission rod 102, a transmission gear, a lever 105 and a spring 106. Preferably, two transmission gears are provided and are respectively provided at both ends of the transmission rod 102, so that when switching power, the transmission gear can be engaged with the power input end at the corresponding end.

[0030] Furthermore, in order to increase the meshing force between the transmission gear and the corresponding power input end, and also to give the transmission gear a certain elastic preload when the transmission gear is meshed with the corresponding power input end, in this embodiment, a spring sheet 106 is installed between the transmission rod 102 and the lever 105, and the two ends of the spring sheet 106 are respectively fastened to the transmission rod 102 and the lever 105, and the transmission rod 102 is provided with a clamping block, and the clamping block is fastened to one end of the spring sheet 106 away from the lever 105. In this way, when the lever 105 shifts the transmission gear at one end of the transmission rod 102 to mesh with the corresponding power input end, the transmission gear can be given a certain elastic preload under the elastic force of the spring sheet 106, thereby effectively preventing the transmission gear from loosening when meshing with the corresponding power input end due to the axial movement of the transmission rod 102, or the transmission gear cannot be quickly meshed with the corresponding power input end due to the lack of a certain elastic preload when meshing.

[0031] In addition, in the present embodiment, in order to facilitate the rapid switching and positioning of the lever 105, preferably, a first latch position 1011 and a second latch position 1012 are provided at the top of the bracket 101, and the first latch position 1011 and the second latch position 1012 are interconnected, and one side wall of the first latch position 1011 and the second latch position 1012 are provided on the same plane. In this manner, the lever 105 can slide along the same side wall of the first latch position 1011 and the second latch position 1012, and then switch between the first latch position 1011 and the second latch position 1012.

[0032] Furthermore, the first latching position 1011 and the second latching position 1012 of the above-mentioned structural design are adopted. In order to facilitate the sliding of the lever 105 and the positioning of the lever 105 after being engaged with the second latching position 1012, the present embodiment further provides a guide rod 107 for the reciprocating sliding of the lever 105 on the bracket 101, and a spring 108 sleeved on the guide rod 107. Preferably, the guide rod 107 in the present embodiment is arranged parallel and spaced apart from the transmission rod 102. When the lever 105 is moved to the second latching position 1012, since one end of the second latching position 1012 is connected with the first latching position 1011 and is arranged in an open manner, the lever 105 can be constrained to a certain extent by the spring 108. When it is necessary to switch to the first latching position 1011, the lever 105 only needs to be pushed hard so that the spring 108 is in a compressed state to complete the switching from the second latching position 1012 to the first latching position 1011.

[0033] The clutch anti-loosening structure designed in the above manner can not only effectively improve the elastic preload force when the transmission gears arranged at both ends of the transmission rod 102 are meshed with the corresponding power input end through the setting of the spring piece 106, but also can conveniently and quickly complete the switching and positioning of the lever 105 between the first position 1011 and the second position 1012 with the assistance of the above-mentioned spring 108, and also improve the stability and reliability of the lever 105 when it cooperates with the first position 1011 and the second position 1012, thereby avoiding loosening between the transmission gear and the corresponding power input end and avoiding power transmission interruption.

[0034] Furthermore, in order to facilitate power transmission after engagement with the driving mechanism, the present embodiment has driven gears 109 at both ends of the transmission rod 102, and the two driven gears 109 are coaxial with the above-mentioned two transmission gears and are integrally arranged, so that the driven gear 109 is driven to rotate by the driving mechanism, and then the transmission gear is driven to rotate, thereby realizing power transmission.

[0035] Combination Figure 3 As shown, this embodiment also provides an infusion pump, which includes the above-mentioned clutch anti-loosening structure, a driving mechanism matched with the clutch anti-loosening structure, and an infusion pump power input end 301 and an injection pump power input end 302 respectively arranged on opposite sides of the clutch anti-loosening structure; the infusion pump power input end 301 and the injection pump power input end 302 are respectively engaged with the transmission gear of the clutch anti-loosening structure.

[0036] Further preferably, the transmission rod 102 in the clutch anti-loosening structure in this embodiment is arranged to slide back and forth along the length direction of the bracket 101, and the first transmission gear 103 and the second transmission gear 104 are respectively arranged at both ends of the transmission rod 102, and the first transmission gear 103 and the second transmission gear 104 are respectively meshed with the corresponding infusion pump power input end 301 and the injection pump power input end 302. In this way, through the action of the above-mentioned lever 105 and the spring 106, the first transmission gear 103 and the second transmission gear 104 are driven to mesh with the corresponding infusion pump power input end 301 and the injection pump power input end 302 when power switching is performed, and at the same time, the occurrence of clutch loosening can be reduced by the arrangement of the spring 106.

[0037] Combination Figure 2 As shown, further preferably, in this embodiment, the driven gears 109 coaxially arranged at the roots of the first transmission gear 103 and the second transmission gear 104 are both configured as spur gears, and the first transmission gear 103 and the second transmission gear 104 are both configured as crown gears.

[0038] Furthermore, in this embodiment, in order to facilitate the engagement of the driven gear 109 with the gear set 202 of the driving mechanism, it is preferred that the length of the gear meshing with the driven gear 109 in the driving mechanism is greater than the length of the driven gear 109, and the driven gear 109 can slide along the length direction of the gear, so that only one driving mechanism is required to meet the power input of the infusion pump power input end 301 and the injection pump power input end 302. Of course, the power output end of the driving mechanism can also be reversed according to installation requirements so that it can be replaced with Figure 2 The side opposite to the power output end.

[0039] Preferably, the driving mechanism in the present embodiment is mainly composed of two parts: a motor 201 and a gear set 202. The specific structural settings of these parts are commonly used in the relevant technology and will not be described in detail here.

[0040] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An infusion pump, comprising a clutch anti-loosening structure, wherein the clutch anti-loosening structure comprises: The bracket (101) is provided with a first clamping position (1011) and a second clamping position (1012); A clutch assembly comprises a transmission rod (102) slidably matched with the bracket (101), a transmission gear fastened to the transmission rod (102), a lever (105) matched with the first clamping position (1011) and the second clamping position (1012), and a spring sheet (106) with two ends respectively connected to the transmission rod (102) and the lever (105); It also includes a guide rod (107) mounted on the bracket (101) and arranged parallel to and spaced from the transmission rod (102), and a spring (108) sleeved on the guide rod (107) and with one end abutting against the shifting rod (105); Characterized in that the infusion pump further comprises: A driving mechanism matched with the clutch anti-loosening structure, and an infusion pump power input end (301) and an injection pump power input end (302) respectively arranged on opposite sides of the clutch anti-loosening structure; the infusion pump power input end (301) and the injection pump power input end (302) are respectively meshed with the transmission gear of the clutch anti-loosening structure; The transmission rod (102) is arranged to slide back and forth along the length direction of the bracket (101), and the two ends of the transmission rod (102) are respectively provided with a first transmission gear (103) and a second transmission gear (104), and the first transmission gear (103) and the second transmission gear (104) are respectively meshed with the corresponding infusion pump power input end (301) and the injection pump power input end (302).

2. An infusion pump according to claim 1, characterized in that: The first clamping position (1011) and the second clamping position (1012) are arranged in a through manner, and one side wall of the first clamping position (1011) and the second clamping position (1012) are arranged in the same plane.

3. An infusion pump according to claim 1, characterized in that: The transmission rod (102) is provided with a clamping block, and the clamping block is fastened to an end of the elastic sheet (106) away from the shifting rod (105).

4. An infusion pump according to claim 1, characterized in that: The transmission rod (102) is provided with a driven gear (109), and the driven gear (109) is meshed with a gear set (202) of the driving mechanism.

5. An infusion pump according to claim 4, characterized in that: The two driven gears (109) are coaxially and integrally arranged at the roots of the first transmission gear (103) and the second transmission gear (104), respectively; the first transmission gear (103) and the second transmission gear (104) are both configured as crown gears.

6. An infusion pump according to claim 5, characterized in that: The two driven gears (109) are both configured as spur gears.

7. An infusion pump according to claim 5, characterized in that: The driven gear (109) is slidably meshed with the gear set (202) of the driving mechanism along the axial direction.

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