JP7033014B2 - Pump device - Google Patents

Description

The present specification discloses a pump device including a pump main body, a drive unit for driving the pump main body, and a controller provided outside the casing of the drive unit.

Conventionally, a pump device for transferring a fluid is widely known. Such a pump device is roughly classified into a pump main body and a drive unit for driving the pump main body. The drive unit has a power supply, a solenoid, and the like, all of which are housed in a casing. Further, a controller for operating the drive unit is often attached to the outer surface of the casing. The user operates this controller as needed to operate the pumping device.

By the way, such a pump device is often arranged near a tank or a reservoir that is larger than the pump device. Therefore, the periphery of the pump device is often blocked by other members (tanks, etc.). The user needs to avoid these other members and access the controller of the pump device. However, when the position of the controller is fixed, the accessibility to the controller may be very poor depending on the position of the other members. ..

Therefore, a pump device capable of changing the position and posture of the controller has been conventionally proposed. For example, Patent Document 1 discloses a pumping device that allows a controller to be placed on at least two different side walls of a casing. According to such a technique, the controller can be attached to the side wall which is easy for the user to access in consideration of the positional relationship with other members, so that the operability of the pump device can be improved to some extent.

Further, Patent Document 2 discloses a pump device in which a joint mechanism that can rotate around the axial direction of the casing is provided at one end in the axial direction of the casing, and a controller is installed in the joint mechanism. According to such a pump device, by rotating the joint mechanism around an axis, not only the position of the pump device but also the angle (posture) can be changed, so that the degree of freedom in the arrangement of the controller is further improved, and eventually the pump. The operability of the device can be further improved.

Japanese Patent No. 5778693 Japanese Patent No. 6276490

However, the technique of Patent Document 1 can only change the mounting position of the controller, and cannot change the posture itself. Therefore, the operability may deteriorate depending on the installation location of the pump device. For example, in Patent Document 1, the controller is fixed in a posture in which the operation surface is substantially vertical. In this case, in a situation where the pump device can be accessed only from directly above due to the relationship with other members, the visibility and operability of the controller deteriorate.

In Patent Document 2, not only the position of the controller but also the angle can be changed, so that the operability of the controller can be improved as compared with Patent Document 1. However, in Patent Document 2, a joint mechanism must be attached to one end in the axial direction of the casing. In this case, the axial dimension of the pump device is increased by the amount of this joint mechanism, which leads to an increase in the physique of the pump device.

Therefore, in the present specification, a pump device capable of improving the operability of the controller while preventing the increase in body shape is disclosed.

The pump device disclosed in the present specification includes a pump body, a drive unit for driving the pump body, a substantially tubular casing accommodating the drive unit, and a controller for receiving an operation instruction to the drive unit. The controller is attached to the peripheral surface of the casing so as to be movable in the circumferential direction with respect to the casing, and a rail extending in the circumferential direction is provided on the peripheral surface of the casing. A guide member is provided on the back surface of the casing to allow the casing to move in the circumferential direction while restricting the movement of the casing in the axial direction by engaging with the rail, and one of the rail and the guide member is provided. Is characterized in that a concave groove is formed in the axial direction, and a convex protrusion in the axial direction is formed on the other side so as to fit into the groove .

Further, the other pump device disclosed in the present specification receives an operation instruction to the pump main body, the drive unit for driving the pump main body, the substantially tubular casing accommodating the drive unit, and the drive unit. A controller is provided, and the controller is attached to the peripheral surface of the casing in a state of being movable in the circumferential direction with respect to the casing, and is arranged on the peripheral surface of the casing at intervals in the circumferential direction. A plurality of locking portions are formed, and a locked portion to be locked to the locking portion is formed on the back surface of the controller, and one of the locking portion and the locked portion is a recess. The other of the locked portion and the locked portion is a convex that fits into the concave portion, and is a convex that escapes from the locked portion by applying a moving force larger than the own weight of the controller. , Characterized by that.

Further, the controller may be attached to and detached from the casing without using a tool.

Further, the controller may be mounted on the casing in a posture rotated by 180 degrees around an axis perpendicular to the operation surface.

Further, the pump body may be attached to one end in the axial direction of the casing, and a part of the pump body may project radially outward from the peripheral surface of the casing.

At the other end of the casing in the axial direction, at least one of the dial for adjusting the stroke of the pump body and the connection terminal port of the cable may be provided.

According to the pump device disclosed in the present specification, since the controller can move in the circumferential direction, the position and posture of the controller can be freely changed, and the operability of the controller can be improved. Further, at this time, since the controller is attached to the peripheral surface of the casing, it is possible to prevent an increase in the axial dimension of the pump device and, by extension, an increase in the physique.

It is a perspective view of a pump device. It is a perspective view of the pump device which removed the controller. It is a perspective view which looked at the controller from the back side. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is sectional drawing in BB line of FIG. It is a figure which shows the state of attaching a controller to a mounting adapter. It is a figure which shows another example of a controller. It is a figure which shows the other example of a rail and a guide member. It is a figure which shows the other example of a rail and a guide member.

Hereinafter, the configuration of the pump device 10 will be described with reference to the drawings. 1 and 2 are perspective views of the pump device 10, FIG. 1 is a perspective view when the controller 16 is attached, and FIG. 2 is a perspective view when the controller 16 is removed. In the following description, "axial direction", "circumferential direction", and "diametrical direction" mean "axial direction", "circumferential direction", and "diametrical direction" of the casing 20 unless otherwise specified.

The pump device 10 is a reciprocating pump that causes a volume change in the pump chamber to send liquid by reciprocating motion, and is, for example, a diaphragm pump. The pump device 10 is used for transferring a specified amount of liquid, for example, injecting a chemical solution, as needed, and is usually arranged near a tank or a storage layer larger than the pump device 10.

The pump device 10 includes a pump main body 12 for transferring a fluid, a drive unit 14 for driving the pump main body 12, and a controller 16 for receiving an instruction from a user and controlling the drive unit 14. The pump body 12 includes a diaphragm and a pump chamber (not shown) inside. A suction port (not shown) and a discharge port 18 project from the peripheral surface of the pump body 12.

The drive unit 14 is configured by accommodating a linear solenoid that drives the pump main body 12, a control circuit that controls them, a power supply circuit that supplies a power supply voltage to these, and the like (none of which are shown) in the casing 20. .. As shown in FIGS. 1 and 2, the casing 20 has a substantially cylindrical shape having a substantially constant axial cross section, and its upper peripheral surface is an arc surface. A guide rail 22 for guiding the movement of the controller 16 and a plurality of locked portions 56 for defining the position of the controller 16 are formed on the arc surface, which will be described later.

A pump body 12 is attached to one end of the drive unit 14 (casing 20) in the axial direction. As is clear from FIGS. 1 and 2, the discharge port 18 of the pump body 12 projects above the arc surface of the casing 20, that is, outward in the radial direction. At the other end of the drive unit 14 (casing 20) in the axial direction, a stroke adjusting dial 24 and a plurality of (two in the illustrated example) connection terminals 26 are provided. The stroke adjusting dial 24 is a dial for adjusting the stroke of the reciprocating pump. Further, cables such as power lines and signal lines are detachably connected to the connection terminal 26. By making the cable detachable, when the pump device 10 is replaced due to a failure or the like, only the pump device 10 needs to be replaced, and it is not necessary to re-arrange the cable. Further, the relay cable 28 is pulled out from one end in the axial direction of the drive unit 14. The relay cable 28 is connected to the controller 16.

The controller 16 receives an operation instruction from the user and controls the drive unit 14 according to the operation instruction. The controller 16 has a substantially box shape. On the upper surface of the controller 16, a liquid crystal panel 38 for presenting an operating condition and the like, a plurality of operation buttons 40 for receiving operation instructions from the user, and the like are arranged, and the controller 16 functions as an operation surface 36. As shown in FIG. 1, the controller 16 can be attached to the peripheral surface of the casing 20 and can be moved in the circumferential direction of the casing 20. In this example, in order to enable such mounting of the controller 16, a guide rail 22 or the like is provided on the peripheral surface of the casing 20, and a guide member 50 or the like is provided on the back surface of the controller 16. This will be explained in detail below.

FIG. 3 is a perspective view of the controller 16 as viewed from the back side. Further, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 5 is a cross-sectional view taken along the line BB of FIG. The controller 16 includes a substantially box-shaped outer cover 42 and an inner cover 44 attached to the inside of the outer cover 42. As shown in FIG. 4, a space is formed between the outer cover 42 and the inner cover 44, and the circuit board 46 and the like are accommodated in the space. The outer cover 42 has a substantially box shape including an upper surface and a peripheral wall hanging from the peripheral edge of the upper surface. As described above, the upper surface of the outer cover 42 functions as an operation surface 36, and a liquid crystal panel 38 and an operation button 40 are arranged. The lower ends of the side walls 48 on both sides of the outer cover 42 in the axial direction have an arc shape in accordance with the arc surface of the casing 20. Further, notches 49 through which the relay cable 28 is inserted are formed on the left and right side walls 48 of the outer cover 42.

The inner cover 44 is a substantially flat plate-shaped member that is arranged and fixed inside the outer cover 42 with a certain distance from the upper surface of the outer cover 42. A pair of guide members 50 and one sliding rib 58 stand on the back surface of the inner cover 44. The guide member 50 is a rib extending in the circumferential direction, and the lower end thereof has an arc shape in accordance with the arc surface of the casing 20. As shown in FIG. 4, a guide claw 52 protruding inward in the axial direction of the casing 20 is formed at the lower end of the guide member 50.

Guide grooves 30 into which the guide claws 52 are inserted are formed at both ends of the guide rail 22 in the axial direction. The guide groove 30 is a groove extending in the circumferential direction. As shown in FIG. 4, the guide groove 30 has a substantially triangular cross section whose height decreases as it approaches the inside in the axial direction. The guide groove 30 penetrates to the end of the guide rail 22 in the circumferential direction. Therefore, the guide claw 52 can be inserted into the guide groove 30 from the circumferential end of the guide rail 22.

A thin arm portion 54 extends from the circumferential end of the guide member 50, and the locked portion 56 protrudes from the tip of the arm portion 54. As shown in FIG. 5, the locked portion 56 has a substantially semicircular cross section. A plurality of locking portions 32 into which the locked portions 56 are fitted are formed on the peripheral surface of the casing 20 at intervals in the circumferential direction. The locking portions 32 are formed in a total of two rows, one row on each side of the guide rail 22. In this example, 15 locking portions 32 are formed per row at intervals of 15 degrees. The locking portion 32 has a substantially semicircular cross section and is a groove extending in the axial direction.

When the controller 16 is moved in the circumferential direction until the phases of the locked portion 32 and the locked portion 56 match, the locked portion 56 fits into the locking portion 32, and a predetermined operation feeling (click feeling) is obtained. Causes. Further, if the controller 16 is further pushed in the circumferential direction to apply a moving force larger than the weight of the controller 16 to the locked portion 56 (projection), the thin arm portion 54 slightly bends upward and the locked portion 56. 56 (projection) comes out of the locking portion 32 (groove). That is, by providing the locking portion 32 and the locked portion 56, a predetermined operational feeling can be generated at each arrangement interval (15 degrees) of the locking portion 32.

The sliding rib 58 is provided between the pair of guide members 50, and its height is slightly smaller than that of the guide member 50. Further, the lower end of the sliding rib 58 also has an arc shape in accordance with the arc surface of the casing 20. At the center of the guide rail 22 in the axial direction, a sliding surface 34 on which the guide member 50 slides extends in the circumferential direction. By sliding the lower end surface of the sliding rib 58 along the sliding surface 34, it is possible to suppress rattling when the controller 16 is moved in the circumferential direction.

A grommet 60 through which the relay cable 28 is inserted is attached to one corner of the inner cover 44, and the relay cable 28 passes through the grommet 60 and is connected to the circuit board 46 or the like.

Next, a method of mounting the controller 16 on the casing 20 will be described. When attaching the controller 16 to the casing 20, the controller 16 is slid along the peripheral surface of the casing 20 so that the pair of guide claws 52 enter from the circumferential end of the guide groove 30. After the guide claw 52 enters the guide groove 30, the controller 16 may push the controller 16 in the circumferential direction so as to have a desired position and angle.

Here, as shown in FIG. 4, if the pair of guide claws 52 are fitted into the pair of guide grooves 30 arranged at intervals in the axial direction, the controller 16 tries to move in the axial direction on one side. Since the guide claw 52 interferes with the corresponding guide groove 30, the axial movement of the controller 16 is restricted. Further, even if the guide claws 52 try to move in the radial direction, the guide claws 52 interfere with the corresponding guide grooves 30, so that the controller 16 is prevented from being detached from the casing 20. On the other hand, since the guide groove 30 extends in the circumferential direction, the guide claw 52 and, by extension, the controller 16 can move freely in the circumferential direction. That is, by providing the guide claw 52 and the guide groove 30, the controller 16 is allowed to move in the circumferential direction while restricting the radial and axial movements of the controller 16.

Further, at this time, in the process of moving the controller 16 in the circumferential direction, the locked portion 56 repeatedly inserts and disengages from the locking portion 32. Each time the locked portion 56 is inserted into the locking portion 32, the resistance to the movement of the controller 16 temporarily increases, and an appropriate operation feeling (click feeling) is generated. Then, by having such an operation feeling, it is possible to clearly be aware of the amount of movement of the controller 16 in the circumferential direction, and more appropriate position adjustment becomes possible.

Here, the reason why the controller 16 can be moved along the circumferential direction will be described. As described above, the pump device 10 is installed in the vicinity of a tank or a storage tank larger than the pump device 10. Therefore, a part of the periphery of the pump device 10 is often blocked by another member (tank or the like). The user needs to avoid such other members and access the controller 16 of the pump device 10, but the accessibility to the controller 16 may be very poor depending on the positional relationship between the controller 16 and the other members. ..

In such a case, in order to change the controller 16 to an easily accessible position and posture, in this example, the controller 16 is movably installed on the peripheral surface of the casing 20. With such a configuration, the position and posture of the controller 16 can be changed according to the installation status of the pump device 10, so that the operability of the pump device 10 can be improved. For example, in FIG. 1, when a large tank is installed on the right side of the pump device 10, if the controller 16 is moved in the circumferential direction and positioned on the left side of the casing 20, the visibility and operation of the controller 16 can be achieved. Can improve sex. When the pump device 10 is installed at a position significantly lower than the line of sight, the controller 16 is moved in the circumferential direction so as to be located near the top of the casing 20 and the operation surface 36 is made substantially horizontal. Therefore, the visibility and operability of the controller 16 can be improved.

Further, the controller 16 of this example can be turned upside down and attached to the casing 20. That is, if the controller 16 removed from the casing 20 is inverted 180 degrees around an axis perpendicular to the operation surface 36 and then attached to the casing 20 again, the controller 16 can be inverted upside down. As a result, the operation surface 36 can be upright regardless of whether the controller 16 is positioned on the right side or the left side of the casing 20.

By the way, as is clear from the explanation so far, in this example, the controller 16 is attached in the circumferential direction of the casing 20, and the guide rail 22 which is a joint mechanism for attaching the controller 16 is also attached in the circumferential direction of the casing 20. It is provided in. In other words, the axial end of the casing 20 is not provided with any member related to the attachment or movement of the controller 16. The reason for this configuration is to prevent the pump device 10 from being physique-enhanced.

That is, when some kind of joint mechanism for mounting the controller 16 is provided at the axial end of the casing 20, the axial dimension of the pump device 10 is increased by that amount, and the physique is improved. Further, in the first place, a pump main body 12 is provided at one end in the axial direction of the casing 20, and a stroke adjusting dial 24 and a connection terminal 26 are provided at the other end. If the joint mechanism is to be provided avoiding these, the configuration may be complicated.

On the other hand, in this example, since the guide rail 22 which is a joint mechanism is provided only on the peripheral surface of the casing 20, it is possible to prevent an increase in the axial dimension of the pump device 10. Here, if the controller 16 is attached in the circumferential direction of the casing 20, the height of the pump device 10 may increase by the thickness of the controller 16. However, since the pump device 10 originally has a discharge port 18 projecting above the peripheral surface of the casing 20, even if the controller 16 is arranged in the circumferential direction of the casing 20, the height dimension of the pump device 10 is still large. , Almost the same, it can prevent the physique from rising.

Further, as is clear from the above description, the controller 16 can be attached to and detached from the casing 20 without using a tool. Therefore, the controller 16 can be attached to a member other than the casing 20, for example, a DIN rail, and the accessibility to the controller 16 can be further improved. DIN rails are metal rails that are often used to mount control components inside control panels. This DIN rail mounting adapter is generally commercially available. Therefore, if the controller 16 is fastened to this mounting adapter, the controller 16 can be easily mounted on the DIN rail.

Various methods for fastening the mounting adapter and the controller 16 can be considered. For example, as shown in FIG. 6, a plurality of fastening female screws 62 are formed on the inner cover 44 of the controller 16 and the fastening female is formed. The mounting adapter 100 may be screwed and fastened to the controller 16 by using the screw 62. At this time, in order to avoid interference between the mounting adapter 100 and the mounting adapter 42, a spacer 64 (screws are inserted) having a height protruding outward from the lower end of the outer cover 42 between the inner cover 44 and the mounting adapter 100. It is desirable to intervene a possible substantially tubular member). Further, although screw fastening is taken as an example here, the controller 16 may be fastened to another member such as the mounting adapter 100 by another fastening method, for example, fitting. In any case, by providing the controller 16 with a means for fastening to other members (female screw 62 in the example of FIG. 6), the controller 16 can be easily attached to a member other than the casing 20. ..

Further, the examples described so far are all examples, and if the controller 16 is attached to at least the peripheral surface of the casing 20 in a state where it can be moved in the circumferential direction, other configurations are appropriately changed. You may. For example, in the description so far, the locking portion 32 is provided on the arm portion 54 extending from the tip of the guide member 50, but the locking portion 32 may be provided independently of the guide member 50. For example, as shown in FIG. 7, a locking rib 59 may be provided on the side of the guide member 50. In this case, the tip of the locking rib 59 functions as a locked portion 56 that fits into the locking portion 32. Then, by bending the locking rib 59, the locked portion 56 fitted in the locking portion 32 can escape from the locking portion 32.

Further, in this example, the locking portion 32 is a groove and the locked portion 56 is a protrusion, but this may be reversed, and the locking portion 32 may be a protrusion and the locked portion 56 may be a groove. That is, a plurality of protrusions (locking portions 32) are provided on the peripheral surface of the casing 20 at intervals in the circumferential direction, and a groove (locked portion 56) into which the protrusions are fitted is provided on the controller 16 side. You may. Even in this case, an appropriate feeling of operation can be obtained each time the locking portion 32 (projection) is fitted into the locked portion 56 (groove). Further, as another form, such a locking portion 32 and a locked portion 56 may be omitted.

Further, the shapes of the guide rail 22 and the guide member 50 described above may be appropriately changed as long as the movement of the controller 16 other than the circumferential direction can be regulated. For example, in this example, the guide rail 22 is provided with the guide groove 30, and the guide member 50 is provided with the guide claw 52, but these may be reversed. That is, as shown in FIG. 8, the guide claw 52 protruding in the axial direction may be provided on the guide rail 22, and the guide groove 30 in which the guide claw 52 is fitted may be provided on the guide member 50. Further, the shapes of the guide claw 52 and the guide groove 30 may be changed. For example, as shown in FIG. 9, the guide claw 52 and the guide groove 30 may have a T-shaped cross section.

10 Pump device, 12 Pump body, 14 Drive unit, 16 Controller, 18 Discharge port, 20 Casing, 22 Guide rail, 24 Stroke adjustment dial, 26 Connection terminal, 28 Relay cable, 30 Guide groove, 32 Locking part, 34 Sliding surface, 36 operation surface, 38 liquid crystal panel, 40 operation button, 42 outer cover, 44 inner cover, 46 circuit board, 48 side wall, 49 notch, 50 guide member, 52 guide claw, 54 arm part, 56 casing Stop, 58 sliding ribs, 59 locking ribs, 60 grommets, 62 female threads, 64 spacers, 100 mounting adapters.

Claims (6)

With the pump body,
The drive unit that drives the pump body and
A substantially cylindrical casing accommodating the drive unit, and
A controller that receives operation instructions to the drive unit,
The controller is attached to the peripheral surface of the casing so as to be movable in the circumferential direction with respect to the casing .
A rail extending in the circumferential direction is provided on the peripheral surface of the casing.
A guide member is provided on the back surface of the controller to allow the casing to move in the circumferential direction while restricting the movement of the casing in the axial direction by engaging with the rail.
One of the rail and the guide member has a concave groove in the axial direction, and the other has a convex protrusion in the axial direction to fit into the groove.
A pumping device characterized by that. With the pump body,
The drive unit that drives the pump body and
A substantially cylindrical casing accommodating the drive unit, and
A controller that receives operation instructions to the drive unit,
The controller is attached to the peripheral surface of the casing so as to be movable in the circumferential direction with respect to the casing.
A plurality of locking portions arranged at intervals in the circumferential direction are formed on the peripheral surface of the casing.
A locked portion that locks to the locking portion is formed on the back surface of the controller.
One of the locked portion and the locked portion is a concave portion.
The other of the locked portion and the locked portion is a convex that fits into the concave portion, and is a convex that escapes from the locked portion when a moving force larger than the own weight of the controller is applied.
A pumping device characterized by that. The pump device according to claim 1 or 2 .
The controller is a pump device that can be attached to and detached from the casing without using a tool. The pump device according to claim 3 .
The controller is a pump device characterized in that it can be mounted on the casing in a posture rotated by 180 degrees around an axis perpendicular to the operation surface. The pump device according to any one of claims 1 to 4 .
The pump body is attached to one end of the casing in the axial direction.
A part of the pump body protrudes radially outward from the peripheral surface of the casing.
A pumping device characterized by that. The pump device according to claim 5 .
A pump device characterized in that a dial for adjusting a stroke of the pump body and at least one of a cable connection terminal port are provided at the other end in the axial direction of the casing.

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