JP4476864B2 - Vibration isolator for pump block - Google Patents

Description

  The present invention relates to a vibration isolator for a pump block such as a circulation pump for circulating water or hot water in a water heater.

  Some water heaters are provided with a circulation pump for circulating water and hot water in the apparatus. The circulation pump constitutes a pump block including a pump main body and a pump motor that drives the pump main body. For example, the circulation pump is provided with a casing of the water heater as a base.

  2. Description of the Related Art Conventionally, in order to reduce vibration when the pump block is driven, a vibration isolator having a vibration isolating rubber disposed between the pump block and the base is known. As the vibration isolator, for example, the pump block is screwed to the rubber member through through holes provided in the vicinity of the four corners of a plate-like rubber member, and legs provided at the four corners of the rubber member are provided. There is one that attaches the rubber member to the base via the base (see Patent Document 1).

  According to the vibration isolator, since the leg portions are provided at the four corners of the single rubber member and are attached to the base via the leg portions, the number of parts can be reduced and easily It can be assembled to.

However, since the vibration isolator is for screwing the pump block to the rubber member through a through hole provided in the rubber member, the rubber member must be prepared for each model of the pump block. There is an inconvenience of not becoming. Since the rubber member is manufactured by vulcanization in a mold, in order to prepare the rubber member for each pump block model, an expensive mold must be prepared according to the pump block model. Therefore, an increase in manufacturing cost is inevitable.
Japanese Utility Model Publication No. 6-83973

  It is an object of the present invention to provide a vibration isolator for a pump block that can eliminate such inconvenience and can use a common anti-vibration rubber member regardless of the type of pump block.

  In order to achieve such an object, the present invention provides a pump block comprising a pump and a pump motor, and is disposed between the pump block and the base when the pump block is attached to the base. In a vibration isolator for a pump block including a vibration isolating rubber member that reduces vibration when the pump block is driven, a support member that supports the pump and the pump motor, a top plate portion on which the pump motor is mounted, and the top plate Anti-vibration rubber member provided with a rectangular tube-like leg part hanging from the part, a metal connection member formed integrally with the top plate part and connected to the support member, and integral with the leg part And a metal attachment member for attaching the leg portion to the base.

  According to the vibration isolator for a pump block of the present invention, the pump block including the pump and the pump motor is supported by the support member, and is integrated with the top plate portion of the vibration isolation rubber member via the support member. It is connected to the connecting member formed in the above. Therefore, the support member may be changed according to the model of the pump block, and the anti-vibration rubber member can be commonly used regardless of the model of the pump block.

  Further, according to the vibration isolator for a pump block of the present invention, the vibration isolating rubber member includes the connection member, so that the pump block can be easily assembled and is suspended from the top plate portion. Since the attachment member formed integrally with the leg portion is provided, the attachment to the base can be easily performed.

  In the vibration isolator for a pump block according to the present invention, it is preferable that the support member includes a locking member that is locked to an edge of the top plate portion. By providing the locking member, the supporting member can support the load of the pump block at the locking portion of the locking member as well as at the connecting portion with the connecting member.

  In the vibration isolator of the pump block having the above configuration, the connection member is built in the top plate portion of the vibration isolating rubber member, and the mounting member is built in the leg portion. The connection member and the attachment member are both made of metal, and the effect of reinforcing the vibration-proof rubber member at the portion in which each is built-in can be obtained. However, the attachment member is provided below the leg portion in order to attach the leg portion to the base, and the leg portion between the connection member and the attachment member is made of only rubber. There is.

  For example, when a large impact is applied, for example, when the package is dropped, the portion made only of the rubber is greatly deformed, and there is a concern that the pump block cannot be supported. If the portion made only of the rubber cannot support the pump block, the pump block may collide with the water heater main body or the like to cause a dent or the like on the water heater main body or the like.

  Therefore, in the vibration isolator for a pump block according to the present invention, the connection member further includes a first deformation restricting member extending from a portion built in the top plate portion into the leg portion, and the mounting The member includes a second deformation restricting member extending from the portion built in the leg portion into the leg portion, and the two deformation restricting members are arranged to face each other in the vertical direction and the horizontal direction, When the anti-vibration rubber member is deformed, the deformation of the anti-vibration rubber member is regulated by being close to each other through rubber constituting the anti-vibration rubber member.

  According to the vibration isolator for a pump block of the present invention, by providing both the deformation restricting members, the deformation of the vibration isolating rubber member is restricted even when a large impact is applied such as when a package is dropped. The pump block can be reliably supported by the anti-vibration rubber member, and it is possible to prevent the pump block from colliding with the water heater main body or the like to generate a dent or the like.

  Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. 1 is a side view showing the configuration of a pump block having the vibration isolator of the present embodiment, FIG. 2 is a plan view of the bracket shown in FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4, FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 4, and FIG. 7 is an enlarged view of the main part of FIG. It is.

  As shown in FIG. 1, the vibration isolator 1 of this embodiment is used for the pump block 2 which circulates water and hot water in an apparatus in a hot water heater etc., for example. The pump block 2 includes a pump main body 3 and a pump motor 4, and the pump main body 3 and the pump motor 4 are screwed and supported by a bracket 5, and the bracket 5 is connected to a vibration-proof rubber member via a connection piece 6. 7 and is fixed to the edge 10 by clamping the end edge 10 of the anti-vibration rubber member 7 with a pair of upper and lower locking pieces 9a, 9b. Yes.

  The pump motor 4 is placed on the upper surface of the vibration-proof rubber member 7 by the lower end portion of the flange member 4a attached to the body portion, and a part of the load is supported.

  2 and 3, the bracket 5 is a substantially rectangular flat plate, and includes a pair of left and right connecting pieces 6 on both sides of the lower end edge, and a pair of upper and lower engaging pieces 9a at the center of the lower end edge. , 9b. The connection piece 6 is formed with a screw hole 6 a for screwing to the connection member 8 of the vibration isolating rubber member 7. The bracket 5 has a through hole 11 at the center, and the drive shaft of the pump motor 4 is connected to the pump body 3 through the through hole 11. A plurality of motor attachment holes 12 are formed around the through hole 11, and a plurality of pump attachment holes 13 are formed along the periphery.

  As shown in FIGS. 4, 5 (a), and 6 (a), the anti-vibration rubber member 7 includes a top plate portion 14 and square cylindrical leg portions 15 that are suspended from the top plate portion 14. . The top plate part 14 includes a collar part 16 extending laterally from the leg part 15, and the collar part 16 is sandwiched between a pair of collar protrusion parts 16a provided on both side parts and the collar protrusion parts 16a and 16a. It consists of a bowl recess 16b. The top plate portion 14 incorporates a metal plate 17 integrally formed by insert molding, and the metal plate 17 forms a connecting member 8 by a portion exposed from the side of the flange protrusion portion 16a. The connecting member 8 has a hook shape bent at right angles at three locations, and a screw hole 8a is formed at the tip of the connecting member 6 of the bracket 5 for screwing. In addition, the collar recessed part 16b is the edge 10 with which the locking pieces 9a and 9b of the bracket 5 are locked.

  The leg portion 15 includes a substantially rectangular inner peripheral wall 18 and a grounding portion 19 extending in three directions excluding the direction in which the flange portion 16 is formed on the outer peripheral side. Further, the leg portion 15 incorporates a metal plate 20 integrally formed by insert molding, and the metal plate 20 forms a mounting member 21 by a portion exposed from the grounding portion 19. The attachment member 21 is formed in three directions excluding the direction in which the flange portion 16 is formed, and includes one or two attachment hole portions 21a, and the leg portion 15 is not illustrated via the attachment hole portion 21a. It is designed to be screwed onto the base.

  The anti-vibration rubber member 7 includes a through hole 14a that passes through the top plate portion 14 and communicates with a space surrounded by the inner peripheral wall 18 of the leg portion 15. The metal plate 17 is exposed in the through hole 14a. Yes. And the metal plate 17 is provided with the through-hole 17a in the part exposed to the through-hole 14a.

  In the vibration isolator 1 of the present embodiment, first, the leg portion 15 of the vibration isolating rubber member 7 is screwed to a base (not shown) using the mounting hole 21 a of the mounting member 21. Next, the connection piece 6 of the bracket 5 and the connection member 8 of the vibration isolating rubber member 7 are screwed using the screw holes 6a and 8a, and the bracket 5 and the connection member 8 are connected. At this time, the locking pieces 9 a and 9 b of the bracket 5 are locked to the flange recess 16 b of the vibration isolating rubber member 7. The pump block 2 is supported by the bracket 5 by screwing the pump body 3 into the motor mounting hole 12 of the bracket 5 and the pump motor 4 into the pump mounting hole 13. Therefore, the assembly of the pump block 2 and the attachment of the leg portion 15 to the base can be easily performed.

  According to the vibration isolator 1 of the present embodiment, the pump block 2 is supported by the bracket 5 as described above, and is placed on the upper surface of the vibration isolating rubber member 7 by the lower end portion of the hook-shaped portion 4a. Since the five locking portions 9a and 9b are locked to the flange recess 16b of the vibration isolating rubber member 7, the load is supported. The bracket 5 is connected to the connection member 8 as described above. The connection member 8 is formed integrally with the vibration isolating rubber member 7, and most of the metal plate 17 forming the connection member 8 is attached to the top plate portion 14. Since it is built in, the connecting member 8 can support the load of the pump block 2 on the bracket 5. Further, since the metal plate 17 built in the top plate portion 14 is pressed from above by the lower end portion of the bowl-shaped portion 4a of the pump motor 4, it is screwed to the bracket 5 on the opposite side to the pump motor 4. The load of the pump main body 3 currently made can be supported. When the pump motor 4 is driven in this state, the vibration is absorbed by the vibration isolating rubber member 7 and can be prevented from propagating to the water heater or the like.

  Further, according to the vibration isolator 1 of the present embodiment, the pump block 2 is supported by the bracket 5 and connected to the connection member 8 of the vibration isolating rubber member 7 via the bracket 5. Therefore, when the model of the pump block 2 is changed, the specification of the bracket 5 may be changed according to the model of the pump block 2, and the anti-vibration rubber member 7 can be used in common regardless of the model of the pump block 2. .

  By the way, in the vibration isolator 1 of this embodiment, as shown to Fig.5 (a) and FIG.6 (a), the metal plate 17 is incorporated in the top-plate part 14, and the lower part of the leg part 15, grounding is carried out. The metal plate 20 is built in the part 19, and the metal plates 17, 20 act as a reinforcing material for the vibration isolating rubber member 7. However, in the leg part 15, the part between the metal plates 17 and 20 consists only of rubber | gum, and the reinforcing material is not contained. At this time, when a large impact is applied, for example, when a package such as a water heater provided with the vibration isolator 1 is dropped, the vibration isolator rubber member 7 is indicated by arrows in FIGS. 5 (a) and 6 (a). There is a concern that the pump block 2 cannot be supported due to significant deformation in the vertical and horizontal directions.

  Therefore, in the vibration isolator 1 of the present embodiment, as shown in FIG. 5B and FIG. 6B, the vibration isolating rubber member 7 has a metal plate 17 built in the top plate portion 14 provided inside the leg portion 15. The first deformation restricting member 22 has a crank shape that hangs down from the bottom, and the metal plate 20 built in the lower portion of the leg portion 15 includes a second deformation restricting member 23 that stands vertically inside the leg portion 15. May be.

  As shown in FIG. 7, the first deformation restricting member 22 includes a connection portion 22a extending in the direction of the metal plate 20 from the metal plate 17 built in the top plate portion 14 into the leg portion 15, and a connection portion 22a. It consists of an arm portion 22b extending from the tip in a direction parallel to the metal plate 17, and a tip portion 22c extending further from the tip of the arm portion 22b in the direction of the metal plate 20, and includes a connecting portion 22a, an arm portion 22b, and a tip portion. A crank shape is formed by 22c. The second deformation regulating member 23 is opposite to the first deformation regulating member 22 in the vertical direction with the tip 23a facing the arm portion 22b and in the horizontal direction the second deformation regulating member 23 itself faces the tip portion 22c. Arranged.

  According to the above configuration, when a large impact is applied to the anti-vibration rubber member 7 such as when the package is dropped, the distal end 23a of the second deformation restriction member 23 and the arm of the first deformation restriction member 22 are vertically aligned. The deformation of the leg portion 15 is restricted when the portion 22b comes close to each other through the rubber forming the anti-vibration rubber member 7. Further, in the horizontal direction, the second deformation regulating member 23 itself and the tip 22c of the first deformation regulating member 22 are close to each other via rubber forming the vibration isolating rubber member 7, whereby the leg portion 15 deformations are regulated.

  Therefore, the anti-vibration rubber member 7 can reduce deformation even when a large impact is applied such as when the package is dropped, and can reliably support the pump block 2.

The side view which shows the structure of the pump block provided with the vibration isolator of this invention. The top view of the bracket shown in FIG. III-III sectional view taken on the line of FIG. FIG. 2 is a plan view of the vibration-proof rubber member shown in FIG. 1. VV sectional view taken on the line of FIG. VI-VI sectional view taken on the line of FIG. The principal part enlarged view of FIG.6 (b).

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vibration isolator, 2 ... Pump block, 3 ... Pump, 4 ... Pump motor, 5 ... Support member, 7 ... Anti-vibration rubber member, 8 ... Connection member, 9a, 9b ... Locking member, 14 ... Top plate part 15 ... Leg part, 21 ... Mounting member, 22 ... 1st deformation control member, 23 ... 2nd deformation control member.

Claims (3)

A pump block comprising a pump and a pump motor, and an anti-vibration rubber disposed between the pump block and the base when the pump block is attached to the base to reduce vibration when the pump block is driven In a vibration isolator for a pump block comprising a member,
A vibration-insulating rubber member comprising a support member for supporting the pump and the pump motor, a top plate portion on which the pump motor is placed, and a rectangular tube-like leg portion suspended from the top plate portion; and the top plate portion A metal connection member that is integrally formed with the support member and a metal attachment member that is integrally formed with the leg portion and attaches the leg portion to the base. A vibration isolator for the pump block.   2. The vibration isolator for a pump block according to claim 1, wherein the support member includes a locking member that is locked to an edge of the top plate portion.   The connection member includes a first deformation restricting member extending from a portion built in the top plate portion to the inside of the leg portion, and the attachment member extends from a portion built in the leg portion to the leg portion. A second deformation restricting member extending inside, wherein the two deformation restricting members are arranged opposite to each other in the vertical direction and the horizontal direction, and the anti-vibration rubber member is deformed when the anti-vibration rubber member is deformed; 3. The vibration isolator for a pump block according to claim 1, wherein deformation of the anti-vibration rubber member is regulated by being close to each other through rubber constituting the pump block.

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