Negative pressure structure for SD (Sprague Dawley) rat milk electric collection device

Abstract

The utility model discloses a negative pressure structure for an SD (Sprague Dawley) rat milk electric collecting device, which belongs to the field of electric breast pumps and comprises an electric collecting device shell and a negative pressure component arranged in the electric collecting device shell. The negative pressure assembly comprises a piston mechanism and an electric push rod connected with a shaft rod of the piston mechanism. An adjusting assembly is arranged in the electric collecting device shell; the adjusting assembly comprises a sensor connected with a shaft rod of the piston mechanism, magnetic elements in signal connection with the sensor are arranged on the two sides of the sensor, and a driving lead screw is inserted into one magnetic element in a threaded mode. According to the negative pressure mechanism, through the arranged adjusting assembly, the moving distance of the piston rod in the piston barrel is adjusted and controlled, the size of a cavity for forming negative pressure in the piston barrel is conveniently adjusted, then the suction force of the negative pressure structure can be adjusted, and the device can be adjusted according to the suction force needed by different SD rat nipples; the collection efficiency is improved, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric breast pumps, in particular to a negative pressure structure for an electric milk collecting device for SD rats. Background Art

[0002] The negative pressure structure is used in the electric milk collection device for SD rats, mainly to simulate the effective stimulation of the mammary gland during natural lactation and promote the secretion and outflow of milk.

[0003] Upon investigation, it was found that the negative pressure in the piston cylinder of the negative pressure mechanism in the existing electric collection device is generally adjusted by the switch gear. Although this adjustment method is simple and fast, it is single, which makes the adjustment of the negative pressure in the piston cylinder uniform and fixed, and cannot be adjusted according to the needs of each SD rat, which makes the adjustment limited.

[0004] Therefore, the utility model provides a negative pressure structure for an electric milk collection device for SD rats to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The utility model provides a negative pressure structure for an electric milk collection device for SD rats, aiming to solve the problem raised in the background art that the negative pressure in the piston cylinder of the negative pressure mechanism in the existing electric collection device is generally adjusted by a switch gear, so that the adjustment of the negative pressure in the piston cylinder is uniform and fixed, and cannot be adjusted according to the needs of each SD rat, resulting in limitations in the adjustment.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a negative pressure structure for an electric milk collecting device for SD rats, comprising an electric collecting device housing and a negative pressure component disposed in the electric collecting device housing;

[0009] The negative pressure assembly includes a piston mechanism and an electric push rod connected to the piston mechanism shaft;

[0010] The difference from the existing negative pressure mechanism is that: the housing of the electric collection device is provided with an adjustment component for adjusting the size of the cavity inside the piston mechanism; the adjustment component includes a sensor connected to the piston mechanism shaft, and magnetic elements connected to its signal are provided on both sides of the sensor, and a driving screw is threadedly inserted on one of the magnetic elements, and both ends of the driving screw are rotatably sleeved with bearing plates fixedly connected to the inner wall of the housing of the electric collection device, and one end of the driving screw is provided with a driving member; by adjusting and controlling the distance that the piston rod moves in the piston cylinder, it is convenient to adjust the size of the cavity that forms the negative pressure in the piston cylinder, and then the suction force of the negative pressure structure can be adjusted, so that the device can be adjusted according to the suction force required by the nipples of different SD rats, thereby improving the collection efficiency and the applicability of the device.

[0011] Preferably, the piston mechanism includes a piston cylinder, one end of the piston cylinder is fixedly connected with an air intake pipe, the outer side of the other end of the piston cylinder is fixedly connected with an exhaust pipe, the interior of the piston cylinder is slidingly sleeved with a piston rod in contact with its inner wall, the other end of the piston cylinder is slidingly connected with a push-pull rod fixedly connected to the piston rod, the push-pull rod is fixedly connected to the sensor, and the end of the push-pull rod is fixedly connected to a synchronization plate fixedly connected to the output end of the electric push rod.

[0012] Preferably, in order to prevent the piston rod from pushing the gas out through the intake pipe when it is reset, an elastic piston is provided in the piston cylinder and at the intake pipe port; the elastic piston can seal the intake pipe port, making it convenient for the piston rod to generate negative pressure inside the piston cylinder.

[0013] Preferably, another of the magnetic elements is fixed on a bearing plate close to the piston cylinder.

[0014] Preferably, the driving member includes a driven gear fixedly mounted on the end of the driving screw, and the driving gear that is rotatably connected to the driven gear through a through slot on the housing of the electric collection device is engaged with the driven gear; when the driving gear is rotated clockwise, the driven gear rotates counterclockwise, and then the magnetic element moves in a direction away from the piston cylinder under the action of the driving screw; when the driving gear is rotated counterclockwise, the driven gear rotates clockwise, and then the magnetic element moves in a direction close to the piston cylinder under the action of the driving screw.

[0015] Preferably, it also includes a soft shell that is sleeved on the outside of the negative pressure component and the adjustment component, and the soft shell is fixedly embedded in the housing of the electric collection device; the soft shell can absorb part of the noise and vibration generated during the operation, making the milk pumping process quieter, reducing noise interference, and also improving the overall privacy and comfort of use; the soft shell is like a protective layer, which can prevent the negative pressure structure from being damaged when the breast pump is accidentally dropped or collided, thereby extending the service life of the negative pressure structure.

[0016] (3) Beneficial effects

[0017] The negative pressure mechanism, through the adjustment component, adjusts and controls the distance the piston rod moves in the piston cylinder, thereby facilitating adjustment of the size of the cavity forming the negative pressure in the piston cylinder. This in turn allows adjustment of the suction force of the negative pressure structure, enabling the device to be adjusted according to the suction force required by different SD rat nipples, thereby improving collection efficiency and the applicability of the device.

[0018] The negative pressure mechanism is equipped with a soft shell that can absorb some of the noise and vibration generated during the operation, making the milk pumping process quieter and reducing noise interference, while also improving the overall privacy and comfort of use; the soft shell is like a protective layer that can prevent the negative pressure structure from being damaged when the breast pump is accidentally dropped or collided, thereby extending the service life of the negative pressure structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a negative pressure structure for an electric milk collection device for SD rats;

[0020] Figure 2 for Figure 1 Schematic diagram of the internal structure of the electric plug-in housing;

[0021] Figure 3 This is an exploded view of the soft shell, negative pressure component and regulating component.

[0022] Figure 4 Schematic diagram of the internal structure of the piston cylinder;

[0023] Figure 5 Schematic diagram of the connection structure between the adjustment component and the push rod.

[0024] In the picture:

[0025] 1. Housing of electric collection device; 2. Soft shell; 3. Negative pressure assembly; 31. Piston mechanism; 311. Piston cylinder; 312. Piston rod; 313. Push-pull rod; 314. Inlet pipe; 3141. Elastic piston; 315. Exhaust pipe; 32. Electric push rod; 33. Synchronous plate; 4. Adjustment assembly; 41. Sensor; 42. Magnetic element; 43. Drive screw; 44. Bearing plate; 45. Driven gear; 46. Drive gear. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] The utility model provides a negative pressure structure for an electric milk collecting device for SD rats, such as Figure 1-5 As shown, the negative pressure mechanism includes an electric collection device housing 1 and a negative pressure component 3 arranged in the electric collection device housing 1;

[0029] The negative pressure assembly 3 includes a piston mechanism 31 and an electric push rod 32 connected to the shaft of the piston mechanism 31; the piston mechanism 31 includes a piston cylinder 311, one end of the piston cylinder 311 is fixedly connected to an air inlet pipe 314, the outer side of the other end of the piston cylinder 311 is fixedly connected to an exhaust pipe 315, the interior of the piston cylinder 311 is slidably connected to a piston rod 312 in contact with the inner wall thereof, the other end of the piston cylinder 311 is slidably connected to a push-pull rod 313 fixedly connected to the piston rod 312, the push-pull rod 313 is fixedly connected to the sensor 41, and the end of the push-pull rod 313 is fixedly connected to a synchronization plate 33 fixedly connected to the output end of the electric push rod 32;

[0030] In order to prevent the piston rod 312 from pushing the gas out through the air inlet pipe 314 when it is reset, an elastic piston 3141 is provided in the piston cylinder 311 at the end of the air inlet pipe 314. The elastic piston 3141 can seal the end of the air inlet pipe 314, so that the piston rod 312 can generate negative pressure inside the piston cylinder 311.

[0031] When in use, the output end of the electric push rod 32 drives the push-pull rod 313 to move along one end of the piston cylinder 311 through the synchronous plate 33. During the movement of the push-pull rod 313, the piston rod 312 is driven to move along the inside of the piston cylinder 311. Figure 4When the piston rod 312 moves in the direction away from the air inlet pipe 314, the piston rod 312 generates suction on the port of the air inlet pipe 314, causing the elastic piston 3141 sealed with the port of the air inlet pipe 314 to open, and then allowing the external air to enter the interior of the piston cylinder 311 through the air inlet pipe 314, and then the gas at the other end of the piston rod 312 is discharged through the exhaust pipe 315; when the piston rod 312 moves in the direction close to the air inlet pipe 314, the elastic piston 3141 located at the air inlet pipe 314 is reset to seal the port of the air inlet pipe 314 again, and then the gas squeezed during the movement of the piston rod 312 moves through the gap between the piston rod 312 and the piston cylinder 311 to between the piston rod 312 and the exhaust pipe 315, and then is discharged through the exhaust pipe 315, thereby completing a cycle of negative pressure.

[0032] An adjustment component 4 for adjusting the size of the cavity inside the piston mechanism 31 is provided in the housing 1 of the electric collection device. The adjustment component 4 includes a sensor 41 connected to the shaft of the piston mechanism 31. Magnetic elements 42 connected to its signal are provided on both sides of the sensor 41. A driving screw 43 is threadedly inserted on one of the magnetic elements 42. Both ends of the driving screw 43 are rotatably sleeved with bearing plates 44 fixedly connected to the inner wall of the housing 1 of the electric collection device. A driving member is provided at one end of the driving screw 43. The sensor 41 is electrically connected to the control panel and the electric push rod 32 in the housing 1 of the electric collection device. By adjusting and controlling the distance moved by the piston rod 312 in the piston cylinder 311, it is convenient to The size of the cavity forming the negative pressure in the piston cylinder 311 can be adjusted, and the suction force of the negative pressure structure can be adjusted accordingly, so that the device can be adjusted according to the suction force required by the nipples of different SD rats, thereby improving the applicability of the device. By adjusting the negative pressure, the comfort requirements of different SD rats can be met, avoiding pain caused by excessive suction or inefficiency caused by insufficient suction. The appropriate negative pressure level can more effectively simulate the natural rhythm and strength of sucking of rat babies, thereby increasing the speed of milk outflow and the amount of milk collected, making milk emptying more complete, and helping to maintain and increase milk secretion. Personalized adjustment can effectively prevent nipple pain, damage or other discomfort that may be caused by fixation strength that is not suitable for individual differences.

[0033] Furthermore, another magnetic element 42 is fixed to the bearing plate 44 near the piston cylinder 311;

[0034] Specifically, the driving member includes a driven gear 45 fixedly sleeved on the end of the driving screw 43, and a driving gear 46 is rotatably connected to the housing 1 of the electric collection device through a through slot and meshed with the driven gear 45;

[0035] During use, when it is necessary to adjust the position of the magnetic element 42, first turn the driving gear 46, the driving gear 46 drives the driven gear 45 to rotate, the driven gear 45 drives the driving screw 43 to rotate, and the driving screw 43 drives the magnetic element 42 to change its position, and then completes the adjustment of the suction force of the negative pressure structure; when the driving gear 46 is rotated clockwise, the driven gear 45 rotates counterclockwise, and then under the action of the driving screw 43, the magnetic element 42 moves away from the piston cylinder 311; when the driving gear 46 is rotated counterclockwise, the driven gear 45 rotates clockwise, and then under the action of the driving screw 43, the magnetic element 42 moves toward the direction close to the piston cylinder 311.

[0036] Example 2

[0037] Refer to the attached Figure 2 and attached Figure 3 As shown, it also includes a soft shell 2 that is sleeved on the outside of the negative pressure component 3 and the adjustment component 4, and the soft shell 2 is fixedly embedded in the electric collection device housing 1; the soft shell 2 is made of non-toxic, non-polluting, and odorless rubber material. The soft shell 2 can absorb some of the noise and vibration generated during the operation, making the milk pumping process quieter and reducing noise interference, while also improving the overall privacy and comfort of use; the soft shell 2 is like a protective layer, which can prevent the negative pressure structure from being damaged when the breast pump is accidentally dropped or collided, thereby extending the service life of the negative pressure structure.

[0038] It should be noted that the housing 1 and the soft shell 2 of the electric collection device are both made of transparent materials, which makes it easy to observe the position adjustment of the magnetic element 42.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A negative pressure structure for an electric milk collecting device for SD rats, comprising an electric collecting device housing (1) and a negative pressure component (3) disposed within the electric collecting device housing (1); Its characteristics are: The negative pressure assembly (3) comprises a piston mechanism (31) and an electric push rod (32) connected to the shaft of the piston mechanism (31); An adjusting component (4) for adjusting the size of the inner cavity of the piston mechanism (31) is provided in the housing (1) of the electric collection device; The regulating assembly (4) includes a sensor (41) connected to the shaft of the piston mechanism (31), and magnetic elements (42) connected to its signal are provided on both sides of the sensor (41), a driving screw (43) is threadedly inserted on one of the magnetic elements (42), and both ends of the driving screw (43) are rotatably sleeved with bearing plates (44) fixedly connected to the inner wall of the electric collection device housing (1), and one end of the driving screw (43) is provided with a driving member.

2. The negative pressure structure for the electric milk collection device for SD rats according to claim 1, characterized in that: The piston mechanism (31) includes a piston cylinder (311), one end of the piston cylinder (311) is fixedly connected to an air intake pipe (314), the outer side of the other end of the piston cylinder (311) is fixedly connected to an exhaust pipe (315), the interior of the piston cylinder (311) is slidably sleeved with a piston rod (312) in contact with the inner wall thereof, the other end of the piston cylinder (311) is slidably connected to a push-pull rod (313) fixedly connected to the piston rod (312), the push-pull rod (313) is fixedly connected to the sensor (41), and the end of the push-pull rod (313) is fixedly connected to a synchronization plate (33) fixedly connected to the output end of the electric push rod (32).

3. The negative pressure structure for the electric milk collection device for SD rats according to claim 2, characterized in that: An elastic piston (3141) is provided in the piston cylinder (311) and located at the port of the air inlet pipe (314).

4. The negative pressure structure for the electric milk collection device for SD rats according to claim 1, characterized in that: Another magnetic element (42) is fixed on a bearing plate (44) close to the piston cylinder (311).

5. The negative pressure structure for the electric milk collection device for SD rats according to claim 1, characterized in that: The driving member comprises a driven gear (45) fixedly sleeved on the end of the driving screw (43), and a driving gear (46) meshing with the driven gear (45) is rotatably connected to the housing (1) of the electric collection device via a through slot.

6. The negative pressure structure for the electric milk collection device for SD rats according to claim 1, characterized in that: It also includes a soft shell (2) sleeved on the outside of the negative pressure component (3) and the regulating component (4), and the soft shell (2) is fixedly embedded in the housing (1) of the electric collection device.

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