Bottle with handle

Abstract

To provide a bottle with a handle that can suppress wobbling of the handle relative to the bottle, when the handle is lifted, and that can be molded without causing any breakage to the bottle.SOLUTION: The front end faces of the upper and lower connecting parts extend rearward through stepped portions as they go outward in the longitudinal direction. The left and right side surfaces at the front end of the upper connecting part and the upper end of the fixing part extend inward in the longitudinal direction through stepped portions, approaching each other in the longitudinal direction as they extend rearward. The left and right side surfaces at the front end of the lower connecting part and the lower end of the fixing part extend inward in the longitudinal through stepped portions, approaching each other in the longitudinal direction as they extend rearward. The first and second claw parts curve outward in the vertical direction, the third claw part curves outward in the longitudinal direction, the connection between the first and third claw parts curves obliquely upward, and the connection between the second and third claw parts curves obliquely downward.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bottle with a handle. [Background technology]

[0002] A bottle with a handle is known in which the body of the bottle has a central axis extending in the vertical direction and has a mounting recess that is recessed radially toward the front and opens toward the rear, a handle is attached to the mounting recess, and the handle comprises a fixing portion extending in the vertical direction and fixed to the bottom surface of the mounting recess, a handle portion extending in the vertical direction and provided behind the fixing portion, an upper connecting portion connecting the upper ends of the fixing portion and the handle portion, and a lower connecting portion connecting the lower ends of the fixing portion and the handle portion. In recent years, efforts have been made to reduce the amount of resin used in bottles with handles by making the bottles thinner and making the handles smaller.However, with this type of bottle with handles, the inner surface of the mounting recess can deform when the handle is lifted, making the handle more likely to wobble relative to the bottle. In order to solve such problems, a configuration is known, as shown in Patent Document 1 below, in which the front ends of the upper connecting portion and the lower connecting portion protrude forward from the fixing portion and are embedded in a wall portion that forms the inner surface of the mounting recess, and the front ends of the upper connecting portion and the lower connecting portion are provided with a first claw portion that protrudes upward and is embedded in the wall portion, a second claw portion that protrudes downward and is embedded in the wall portion, and a third claw portion that protrudes in the left-right direction perpendicular to the front-to-back direction when viewed from the top-to-bottom direction and is embedded in the wall portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-079491 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the conventional bottle with a handle, when the bottle is blow-molded with the handle as an insert, the synthetic resin material for the bottle, which has been softened by heating, hits the front end faces of the upper and lower connecting parts, weakening the flow of the synthetic resin material.As the synthetic resin material then tries to flow around the upper and lower connecting parts to the rear, it is stretched and may break.

[0005] To provide a bottle with a handle that can prevent the handle from wobbling relative to the bottle when the handle is lifted and can be formed without causing breakage of the bottle. [Means for solving the problem]

[0006] A bottle with a handle according to one aspect of the present invention has a body of a bottle having a central axis extending in the vertical direction, and a mounting recess that is recessed radially forward and opens rearward, and a handle is attached to the mounting recess, and the inner surface of the mounting recess has an upper surface facing downward, a lower surface facing upward, and a bottom surface facing rearward and connecting front ends of the upper surface and the lower surface, and the handle has a fixing portion that extends vertically and is fixed to the bottom surface of the mounting recess, a handle portion that extends vertically and is provided behind the fixing portion, and a handle portion that extends vertically and is provided behind the fixing portion, and a handle portion that extends vertically and The mounting member includes an upper connecting portion connecting the upper ends thereof and a lower connecting portion connecting the lower ends thereof of the fixing portion and the handle portion, and the front ends of the upper connecting portion and the lower connecting portion protrude forward from the fixing portion and are embedded in a wall portion that forms the inner surface of the mounting recess, and the front ends of the upper connecting portion and the lower connecting portion are provided with a first claw portion that protrudes upward and is embedded in the wall portion, a second claw portion that protrudes downward and is embedded in the wall portion, and a third claw portion that protrudes in a left-right direction perpendicular to the front-rear direction when viewed from the top-bottom direction and is embedded in the wall portion. The front end surfaces of the upper connecting portion and the lower connecting portion extend rearward via a step portion as they move outward from a center portion in the left-right direction away from the center portion in the left-right direction, and both side surfaces in the left-right direction at a portion including the front end portion of the upper connecting portion and the upper end portion of the fixing portion are perpendicular to the front end surface of the upper connecting portion and extend toward the inside in the left-right direction via a step portion as they move rearward, approaching each other in the left-right direction in a first cross-sectional view along the left-right direction, and both side surfaces in the left-right direction at a portion including the front end portion of the lower connecting portion and the lower end portion of the fixing portion are perpendicular to the front end surface of the lower connecting portion and extend along the left-right direction. In the second cross-sectional view, the first and second claw portions extend inward in the left-right direction, approaching each other in the left-right direction via a step portion as they move rearward, and the first and second claw portions have a curved shape that protrudes outward in the up-down direction in the cross-sectional view along the up-down direction and the front-rear direction, the third claw portion formed on the upper connecting portion has a curved shape that protrudes outward in the left-right direction in the first cross-sectional view, and the third claw portion formed on the lower connecting portion has a curved shape that protrudes outward in the left-right direction in the second cross-sectional view, and a connecting portion between the first and third claw portions intersects in the up-down direction and the left-right direction,and has a curved shape that protrudes obliquely upward when viewed in a cross section along the front-to-rear direction, and a connecting portion between the second claw portion and the third claw portion intersects the up-down direction and the left-to-right direction, and has a curved shape that protrudes obliquely downward when viewed in a cross section along the front-to-rear direction.

[0007] The front end faces of the upper connecting portion and the lower connecting portion extend rearward via a step as they move from the left-right center toward the outside, away from the left-right direction.Therefore, when a bottle is blow-molded using the handle as an insert, as the synthetic resin material for the bottle is softened by heating and flows over the front end faces of the upper connecting portion and the lower connecting portion, a gap is created between the synthetic resin material and the step at each front end face.This, combined with the fact that each front end face extends rearward from the left-right center toward the outside in the left-right direction, reduces the flow resistance that occurs between the synthetic resin material and the front end faces of the upper connecting portion and the lower connecting portion. The first and second claws have a curved shape that protrudes outward in the up-down direction in cross-section along the up-down direction and the front-to-back direction, the third claw formed on the upper connecting portion has a curved shape that protrudes outward in the left-to-right direction in the first cross-section, the third claw formed on the lower connecting portion has a curved shape that protrudes outward in the left-to-right direction in the second cross-section, the connection portion between the first and third claws intersects the up-down direction and the left-to-right direction and has a curved shape that protrudes diagonally upward in cross-section along the front-to-back direction, and the connection portion between the second and third claws intersects the up-down direction and the left-to-right direction and has a curved shape that protrudes diagonally downward in cross-section along the front-to-back direction. Therefore, during the blow molding, the synthetic resin material that abuts against the front end surfaces of the upper and lower connecting portions can ride rearward with little resistance around the entire outer periphery of each front end surface. As a result of the above, when a bottle is blow-molded using a handle as an insert, it is possible to prevent the synthetic resin material for the bottle, which has been softened by heating, from being stretched when it tries to wrap around the upper and lower connecting parts to the rear after hitting the front end faces of the upper and lower connecting parts, thereby preventing the bottle from breaking. In the first cross-sectional view, both left and right side surfaces of the upper support part, including the front end of the upper connecting part and the upper end of the fixing part, extend inwardly in the left-right direction, approaching each other in the left-right direction via a step as they extend rearward, and both left and right side surfaces of the lower support part, including the front end of the lower connecting part and the lower end of the fixing part, extend inwardly in the left-right direction, approaching each other in the left-right direction via a step as they extend rearward, in the second cross-sectional view. Therefore, during the blow molding process, the synthetic resin material that flows over the front end faces of the upper and lower connecting parts and then wraps around to the rear of the upper and lower connecting parts is caught on the step portions on both sides of the upper and lower support parts, allowing the upper and lower support parts to be firmly connected to the bottle and reliably preventing the handle from wobbling when lifted.

[0008] In a cross-sectional view taken along the up-down direction and the front-to-back direction, the radius of curvature of each of the front portions of the first claw portion and the second claw portion is larger than the radius of curvature of each of the rear portions of the first claw portion and the second claw portion; in the first cross-sectional view, the radius of curvature of each of the front portions of the third claw portion is larger than the radius of curvature of each of the rear portions of the third claw portion; in the second cross-sectional view, the radius of curvature of each of the front portions of the third claw portion is larger than the radius of curvature of each of the rear portions of the third claw portion; in a cross-sectional view intersecting the up-down direction and the left-right direction and taken along the front-to-back direction, the radius of curvature of each of the front portions of the connection portion between the first claw portion and the third claw portion is larger than the radius of curvature of each of the rear portions of the connection portion between the first claw portion and the third claw portion; and in a cross-sectional view intersecting the up-down direction and the left-to-right direction and taken along the front-to-back direction, the radius of curvature of each of the front portions of the connection portion between the second claw portion and the third claw portion is larger than the radius of curvature of each of the rear portions of the connection portion between the second claw portion and the third claw portion.

[0009] The radius of curvature of the front portion is larger than the radius of curvature of the rear portion in each of the first claw portion, the second claw portion, the third claw portion, the connection portion between the first claw portion and the third claw portion, and the connection portion between the second claw portion and the third claw portion.Therefore, when a bottle is blow-molded using the handle as an insert part, the synthetic resin material for the bottle, softened by heating, can be reliably prevented from being stretched when it tries to wrap around the upper connecting portion and the lower connecting portion rearward after hitting the front end faces of the upper connecting portion and the lower connecting portion. [Effects of the Invention]

[0010] According to the above aspect of the present invention, it is possible to prevent the handle from wobbling relative to the bottle when the handle is lifted, and the bottle can be molded without breaking. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a side view including a partial vertical cross section of a bottle with a handle according to one embodiment, viewed from the left and right direction. FIG. [Figure 2] FIG. 1 is a side view of a handle-equipped bottle according to one embodiment, seen from the rear. [Figure 3] 3 is a diagram showing the handle shown in FIG. 1 and FIG. 2 as viewed from the left and right direction. [Figure 4] 3 is a front view of the handle shown in FIGS. 1 and 2. FIG. [Figure 5] FIG. 4 is a cross-sectional view taken along the line VV in FIG. 3. [Figure 6] FIG. 3 is a perspective view of an upper support portion of the handle shown in FIGS. 1 and 2. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, one embodiment of a bottle with a handle 1 will be described with reference to the drawings. 1 and 2, the bottle with handle 1 includes a bottle 10 and a handle 11. The internal volume of the bottle 10 is, for example, 1 liter or more. The bottle 10 has a mouth 12, a shoulder 13, a body 14, and a bottom 15, and is configured by connecting these parts 12 to 15 in this order with their central axes aligned on a common axis.

[0013] Hereinafter, the common axis will be referred to as the central axis O, the side of the mouth 12 along the central axis O will be referred to as the upper side, the side of the bottom 15 along the central axis O will be referred to as the lower side, and the direction along the central axis O will be referred to as the up-down direction. When viewed from the up-down direction, the direction intersecting the central axis O will be referred to as the radial direction, and the direction going around the central axis O will be referred to as the circumferential direction. In the radial direction, the side of the central axis O on which the handle 11 is provided will be referred to as the rear side, the side opposite the handle 11 across the central axis O in the radial direction will be referred to as the front side, and the direction perpendicular to the front-to-rear direction when viewed from the up-down direction will be referred to as the left-to-right direction.

[0014] In the illustrated example, the mouth 12, shoulder 13, body 14, and bottom 15 each have a circular cross-sectional shape perpendicular to the central axis O. The handle 11 is formed in an annular shape that opens in the left and right directions.

[0015] An upper circumferential groove 17 is formed at the connection between the shoulder 13 and the body 14, extending continuously over the entire circumferential length. The radius of the rear portion of the upper end 14a of the body 14, which is sandwiched vertically between the upper circumferential groove 17 and a mounting recess 16 (described later), is smaller than the radius of the other portions. A lower circumferential groove 18 extending continuously over the entire circumferential length is formed at the connection between the body portion 14 and the bottom portion 15. The lower end portion 14b of the body portion 14 is continuous with the lower circumferential groove 18 from above. The upper end portion 14a and the lower end portion 14b of the body portion 14 are the portions with the largest diameters.

[0016] The body 14 is provided with a mounting recess 16 that is recessed forward and opens rearward. The mounting recess 16 is integrally open rearward and in the left-right directions. The mounting recess 16 is provided in the upper part of the body 14. The mounting recess 16 may also be provided, for example, in the lower part of the body 14 or in the center in the up-down direction of the body 14. The center in the left-right direction of the mounting recess 16 is located in the center in the left-right direction of the part of the outer circumferential surface of the body 14 that faces rearward.

[0017] The inner surface of the mounting recess 16 includes an upper surface 21 , a lower surface 22 , a bottom surface 23 , a lower connecting surface 24 , and an upper connecting surface 25 .

[0018] The upper surface 21 faces downward, and the lower surface 22 faces upward. The lower surface 22 is located below the upper surface 21 and faces opposite to the upper surface 21 in the vertical direction. The bottom surface 23 faces rearward and connects the front ends of the upper surface 21 and the lower surface 22. The bottom surface 23 has a curved shape that is concave toward the front when viewed in cross section along the up-down direction and the front-to-back direction, and has a curved shape that is convex toward the rear when viewed in cross section along the radial direction. The lower connecting surface 24 extends downward from the outer peripheral edge of the lower surface 22 and is connected to the outer peripheral surface of the body portion 14 . The upper connecting surface 25 extends radially outward from the outer peripheral edge of the upper surface 21 upward, and is connected to the outer peripheral surface of the upper end 14 a of the body portion 14 .

[0019] A reinforcing groove 21a is formed on the outer peripheral edge of the upper surface 21. When viewed from below, the reinforcing groove 21a has a curved shape that protrudes rearward. When viewed from below, the reinforcing groove 21a is symmetrical with respect to a line that passes through the center of the mounting recess 16 in the left-right direction and extends radially. When viewed from below, the top of the reinforcing groove 21a that protrudes rearward is located in the center of the mounting recess 16 in the left-right direction.

[0020] The lower connection surface 24 includes a vertical step surface 26 that extends downward from the outer periphery of the lower surface 22 and faces rearward, and a horizontal step surface 27 that extends rearward from the lower end of the vertical step surface 26 and faces upward. The upper end of the vertical step surface 26 is formed into a curved surface that protrudes rearward. The vertical step surface 26 and the horizontal step surface 27 extend in the left-right direction. The left-right size of each of the vertical step surface 26 and the horizontal step surface 27 is at least half the left-right size of the mounting recess 16. When viewed from the rear, the vertical step surface 26 and the horizontal step surface 27 are symmetrical with respect to a line that passes through the left-right center of the mounting recess 16 and extends in the up-down direction.

[0021] The handle 11 is attached to the mounting recess 16. The handle 11 is provided in the center of the mounting recess 16 in the left-right direction. The handle 11 includes a fixing portion 31, a handle portion 32, an upper connecting portion 33, and a lower connecting portion .

[0022] The fixing portion 31 is formed in a rod shape extending in the vertical direction. The fixing portion 31 is curved so as to protrude forward when viewed in the left-right direction. The fixing portion 31 is fixed to the bottom surface 23 of the mounting recess 16. The front portion 31c of the fixing portion 31 is embedded in the wall portion W that forms the inner surface of the mounting recess 16 over its entire vertical length, and the rear portion 31d protrudes rearward from the bottom surface 23 of the mounting recess 16 over its entire vertical length. In the fixing portion 31, the front portion 31c is formed in a plate shape with its front and back surfaces facing the front-to-rear direction, and the rear portion 31d is formed in a plate shape with its front and back surfaces facing the left-to-right direction and protruding rearward from the center of the front portion 31c in the left-to-right direction. The rear portion 31d of the fixing portion 31 may also be embedded in the wall portion W that forms the inner surface of the mounting recess 16 together with the front portion 31c.

[0023] The handle portion 32 is provided behind the fixed portion 31. When viewed from the front-to-rear direction, the handle portion 32 is formed in a rectangular plate shape that is elongated in the vertical direction. The handle portion 32 extends straight in the vertical direction. The handle portion 32 is located rearward of the upper surface 21 and the lower surface 22 of the mounting recess 16. The rear surface of the handle portion 32 is located radially at the same position as the portion of the outer peripheral surface of the upper end portion 14a of the body portion 14 that is circumferentially positioned with the handle portion 32, and is located radially inward of the portion of the outer peripheral surface of the lower end portion 14b of the body portion 14 that is circumferentially positioned with the handle portion 32. The upper and lower ends of the handle portion 32 each extend forward as they extend outward in the vertical direction. The upper end of the handle portion 32 is located below the upper connecting surface 25 of the mounting recess 16 and faces the upper connecting surface 25 in the vertical direction.

[0024] The upper connecting portion 33 connects the upper ends of the fixing portion 31 and the handle portion 32, and is fixed to the upper surface 21 of the mounting recess 16. The upper connecting portion 33 is embedded in the wall portion W that forms the inner surface of the mounting recess 16 over its entire length in the front-to-rear direction except for the rear end portion. The rear end portion of the upper connecting portion 33 protrudes rearward from the upper surface 21 of the mounting recess 16. The upper connecting portion 33 penetrates the top portion of the reinforcing groove 21a in the front-to-rear direction.

[0025] The lower connecting portion 34 connects the lower ends of the fixing portion 31 and the handle portion 32, and is fixed to the lower surface 22 of the mounting recess 16. The lower connecting portion 34 is embedded in the wall portion W that forms the inner surface of the mounting recess 16 over its entire length in the front-to-rear direction except for the rear end portion. The rear end portion of the lower connecting portion 34 protrudes rearward from the lower surface 22 of the mounting recess 16. The lower connecting portion 34 protrudes rearward from the vertical step surface 26 while being spaced upward from the horizontal step surface 27. The lower connecting portion 34 protrudes rearward from the upper end of the vertical step surface 26. The rear end of the lower connecting portion 34 is positioned above the horizontal step surface 27 and faces it in the vertical direction.

[0026] Here, a pair of first vertical grooves 28 are provided on the upper surface 21 of the mounting recess 16, sandwiching the upper connecting portion 33 in the left-right direction. The first vertical grooves 28 reach the outer peripheral surface of the upper end portion 14a of the body portion 14 via the upper connecting surface 25. The pair of first vertical grooves 28 extend in a direction in which the distance between them in the left-right direction increases from the upper surface 21 side of the mounting recess 16 toward the upper end portion 14a of the body portion 14. The first vertical grooves 28 communicate with the upper circumferential groove 17 and the reinforcing groove 21a.

[0027] A pair of second vertical grooves 29 are provided on the upper surface 21 of the mounting recess 16, sandwiching the pair of first vertical grooves 28 in the left-right direction. The second vertical grooves 29 extend via the upper connecting surface 25 to the outer peripheral surface of the upper end 14a of the body 14. The pair of second vertical grooves 29 extend in a direction in which the distance between them in the left-right direction increases from the upper surface 21 of the mounting recess 16 toward the upper end 14a of the body 14. The second vertical grooves 29 communicate with the upper circumferential groove 17 and the reinforcing groove 21a. The second vertical grooves 29 open at the circumferential end of the reinforcing groove 21a. The groove widths of the second vertical grooves 29 and the first vertical grooves 28 are equal to each other.

[0028] A reinforcing rib 25a is formed on the upper connection surface 25 of the mounting recess 16 in a portion adjacent to the upper connecting portion 33 of the handle 11 in the vertical direction. The reinforcing rib 25a is a groove extending in the left-right direction. A plurality of reinforcing ribs 25a are formed at intervals in the vertical direction. The reinforcing rib 25a is located above the upper end of the handle portion 32 and faces the upper end portion of the handle portion 32 in the vertical direction.

[0029] The bottle with handle 1 is formed by blow molding a cylindrical preform with a bottom in a cavity into which the handle 11 is inserted, thereby forming the bottle 10 and at the same time attaching the handle 11 to the attachment recess 16 of the bottle 10. The preform and the handle 11 are formed in advance by injection molding.

[0030] The cavity is provided between the mating surfaces of a pair of molding dies that are arranged to be able to come into contact with and separate from each other. The front ends of the pair of molding dies are connected to each other via a rotation shaft that extends in the vertical direction, and as the pair of molding dies rotate around the rotation shaft, the mating surfaces come into contact with and separate from each other, opening and closing the cavity. As a result, parting lines extend in the vertical direction and are located at the left-right centers of the forward-facing and rear-facing portions of the outer peripheral surface of the body portion 14.

[0031] The front ends of the upper connecting portion 33 and the lower connecting portion 34 protrude forward from the fixing portion 31 and are embedded in the wall portion W that forms the inner surface of the mounting recess 16. A first claw portion 35, a second claw portion 36, and a third claw portion 37 are provided at the front end of each of the upper connecting portion 33 and the lower connecting portion .

[0032] The first claws 35 protrude upward from the front ends of the upper and lower connecting portions 33, 34 and are embedded in the wall portions W that form the inner surface of the mounting recess 16. The second claws 36 protrude downward from the front ends of the upper and lower connecting portions 33, 34 and are embedded in the wall portions W that form the inner surface of the mounting recess 16. As shown in FIGS. 3 and 4 , the third claws 37 protrude on both left and right sides from the front ends of the upper and lower connecting portions 33, 34 and are embedded in the wall portions W that form the inner surface of the mounting recess 16. Note that the third claws 37 may protrude only left or right from the front ends of the upper and lower connecting portions 33, 34.

[0033] The first claw portion 35 and the second claw portion 36 are formed in a rectangular parallelepiped shape that is long in the left-right direction when viewed from the front-rear direction. The third claw portion 37 is formed in a rectangular parallelepiped shape that is long in the up-down direction when viewed from the front-rear direction. The front and back surfaces of the first claw portion 35, the second claw portion 36, and the third claw portion 37 facing the front-rear direction are located on the same plane. The front end faces of the first claw portion 35 and the second claw portion 36 protrude outward in the up-down direction from the front end faces of the upper connecting portion 33 and the lower connecting portion 34, and the front end face of the third claw portion 37 protrude outward in the left-right direction from the front end faces of the upper connecting portion 33 and the lower connecting portion 34. The rear end faces of the first claw portion 35, the second claw portion 36, and the third claw portion 37 provided at the front end of the upper connecting portion 33 are located forward of the upper end portion 31a of the fixing portion 31. The rear end faces of the first claw portion 35, the second claw portion 36, and the third claw portion 37 provided at the front end of the lower connecting portion 34 are located forward of the lower end portion 31b of the fixing portion 31.

[0034] The first claw 35, second claw 36, and third claw 37 provided at the front end of the upper connecting part 33 extend along the front surface of the upper end 31a of the fixing part 31 when viewed from the left and right. The upper end 31a of the fixing part 31 extends rearward as it extends upward. The front part of the upper connecting part 33, which is connected to the front end from behind the front end, extends upward as it extends rearward. The first claw portion 35, the second claw portion 36, and the third claw portion 37 provided at the front end portion of the lower connecting portion 34 extend along the front surface of the lower end portion 31b of the fixing portion 31 when viewed from the left and right. The lower end portion 31b of the fixing portion 31 extends rearward as it extends downward. The front portion of the lower connecting portion 34, which is connected to the front end portion from behind the front end portion, extends downward as it extends rearward.

[0035] When viewed from the left and right, the handle 11 has a symmetrical shape with respect to a straight line L that passes through the center in the vertical direction and extends in the front-to-back direction, and when viewed from the front-to-back direction, it has a symmetrical shape with respect to a straight line (central axis O) that passes through the center in the horizontal direction and extends in the vertical direction.

[0036] In this embodiment, as shown in Figures 5 and 6, the front end surfaces of the upper connecting portion 33 and the lower connecting portion 34 extend rearward via a step portion 38 as they move outward away from the center in the left-right direction. The step portions 38 face outward in the left-right direction. The step portions 38 are provided over the entire vertical length of the front end surfaces of the upper connecting portion 33 and the lower connecting portion 34. Both vertical ends of the step portions 38 are located on the first claw portion 35 and the second claw portion 36, respectively. The upper end of the step portion 38 reaches the upper end surface of the first claw portion 35, and the lower end of the step portion 38 reaches the lower end surface of the second claw portion 36. The step portions 38 are provided over the entire horizontal length of the first claw portion 35 and the second claw portion 36. A plurality of step portions 38 are provided at intervals in the left-right direction, and the step portions 38 located more inward in the left-right direction have a longer vertical length. The interval between adjacent step portions 38 in the left-right direction is smaller than the vertical length of the step portions 38. The step portion 38 is located laterally inward from the connection portion between the first claw portion 35 and the third claw portion 37 (hereinafter referred to as the upper connection portion 41) and the connection portion between the second claw portion 36 and the third claw portion 37 (hereinafter referred to as the lower connection portion 42).

[0037] Both left and right side surfaces of the upper support part 43, including the front end of the upper connecting part 33 and the upper end part 31a of the fixed part 31, extend inward in the left and right direction, approaching each other in the left and right direction via steps as they move rearward, in a first cross-sectional view perpendicular to the front end face of the upper connecting part 33 and along the left and right direction, as shown in FIG. 5 . A plurality of steps are provided at intervals at the rear. These steps form the connection part between the third claw part 37 and the front end of the upper connecting part 33, the connection part between the front end of the upper connecting part 33 and the front part 31c of the fixed part 31, and the connection part between the front part 31c of the fixed part 31 and the rear part 31d of the fixed part 31.

[0038] Both left and right side surfaces of the lower support part 44, including the front end of the lower connecting part 34 and the lower end 31b of the fixed part 31, extend inward in the left and right direction, approaching each other in the left and right direction via steps as they move rearward in a second cross-sectional view perpendicular to the front end face of the lower connecting part 34 and along the left and right direction, as shown in FIG. 5 . A plurality of steps are provided at intervals at the rear. These steps form the connection part between the third claw part 37 and the front end of the lower connecting part 34, the connection part between the front end of the lower connecting part 34 and the front part 31c of the fixed part 31, and the connection part between the front part 31c of the fixed part 31 and the rear part 31d of the fixed part 31.

[0039] The first claw portion 35 and the second claw portion 36 have a curved shape that protrudes outward in the vertical direction when viewed in cross section along the vertical and front-rear directions. When viewed in cross section along the vertical and front-rear directions, the radius of curvature of the front portions of the first claw portion 35 and the second claw portion 36 is larger than the radius of curvature of the rear portions of the first claw portion 35 and the second claw portion 36. The third claws 37 formed on the upper connecting portion 33 have a curved shape that protrudes outward in the left-right direction in the first cross-sectional view. In the first cross-sectional view, the radius of curvature of the front part of the third claws 37 is larger than the radius of curvature of the rear part of the third claws 37. The third claws 37 formed on the lower connecting portion 34 have a curved shape that protrudes outward in the left-right direction in the second cross-sectional view. In the second cross-sectional view, the radius of curvature of the front part of the third claws 37 is larger than the radius of curvature of the rear part of the third claws 37. The upper connection portion 41 between the first claw portion 35 and the third claw portion 37 intersects the up-down and left-right directions and has a curved shape that protrudes diagonally upward in a cross-sectional view along the front-to-back direction. In this cross-sectional view, the radius of curvature of the front portion of the upper connection portion 41 is larger than the radius of curvature of the rear portion of the upper connection portion 41. The lower connecting portion 42 between the second claw portion 36 and the third claw portion 37 intersects the up-down and left-right directions and has a curved shape that protrudes diagonally downward in a cross-sectional view along the front-to-back direction. In this cross-sectional view, the radius of curvature of the front portion of the lower connecting portion 42 is larger than the radius of curvature of the rear portion of the lower connecting portion 42.

[0040] As described above, in the handle-equipped bottle 1 of this embodiment, the front end faces of the upper connecting portion 33 and the lower connecting portion 34 extend rearward via the step portion 38 as they move from the left-right center toward the outside, away from the left-right direction. Therefore, when the bottle 10 is blow-molded using the handle 11 as an insert, when the synthetic resin material for the bottle 10 is softened by heating and flows over the front end faces of the upper connecting portion 33 and the lower connecting portion 34, a gap is formed between the synthetic resin material and the step portion 38 at each front end face. This, combined with the fact that each front end face extends rearward from the left-right center toward the outside in the left-right direction, reduces the flow resistance that occurs between the synthetic resin material and the front end faces of the upper connecting portion 33 and the lower connecting portion 34.

[0041] The first claw portion 35 and the second claw portion 36 have a curved shape that protrudes outward in the vertical direction when viewed in cross section along the vertical and front-to-back directions, the third claw portion 37 formed on the upper connecting portion 33 has a curved shape that protrudes outward in the left-to-right direction when viewed in the first cross section, the third claw portion 37 formed on the lower connecting portion 34 has a curved shape that protrudes outward in the left-to-right direction when viewed in the second cross section, the upper connection portion 41 between the first claw portion 35 and the third claw portion 37 intersects the vertical and left-to-right directions and has a curved shape that protrudes diagonally upward when viewed in cross section along the front-to-back direction, and the lower connection portion 42 between the second claw portion 36 and the third claw portion 37 intersects the vertical and left-to-right directions and has a curved shape that protrudes diagonally downward when viewed in cross section along the front-to-back direction. Therefore, during the blow molding process, the synthetic resin material that strikes the front end faces of the upper connecting portion 33 and the lower connecting portion 34 can be made to ride over the outer periphery of each front end face toward the rear with little resistance all around.

[0042] As described above, when the bottle 10 is blow-molded using the handle 11 as an insert, the synthetic resin material for the bottle 10, which has been softened by heating, can be prevented from being stretched when it tries to move around the upper connecting portion 33 and the lower connecting portion 34 to the rear after hitting the front end faces of the upper connecting portion 33 and the lower connecting portion 34, thereby preventing the bottle 10 from breaking.

[0043] In the first cross-sectional view, the left and right side surfaces of the upper support part 43, including the front end part of the upper connecting part 33 and the upper end part 31a of the fixed part 31, extend inward in the left and right direction, approaching each other in the left and right direction via a step as they move rearward, and the left and right side surfaces of the lower support part 44, including the front end part of the lower connecting part 34 and the lower end part 31b of the fixed part 31, extend inward in the left and right direction, approaching each other in the left and right direction via a step as they move rearward. Therefore, during the above-mentioned blow molding, the synthetic resin material flows over the front end surfaces of the upper connecting portion 33 and the lower connecting portion 34, and then wraps around to the rear of the upper connecting portion 33 and the lower connecting portion 34, where it is caught on the steps on both side surfaces of the upper support portion 43 and the lower support portion 44, making it possible to firmly connect the upper support portion 43 and the lower support portion 44 to the bottle 10, and reliably preventing the handle 11 from wobbling relative to the bottle 10 when the handle 11 is lifted.

[0044] Since the radius of curvature of the front portion of each of the first claw portion 35, the second claw portion 36, the third claw portion 37, the upper connecting portion 41, and the lower connecting portion 42 is larger than the radius of curvature of the rear portion, when the bottle 10 is blow-molded with the handle 11 as an insert part, the synthetic resin material for the bottle 10, softened by heating, can be reliably prevented from being stretched when it tries to wrap around the upper connecting portion 33 and the lower connecting portion 34 rearward after hitting the front end faces of the upper connecting portion 33 and the lower connecting portion 34.

[0045] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0046] For example, the fixing portion 31 may extend straight in the vertical direction. The mounting recess 16 does not necessarily have to have the lower connecting surface 24 and the upper connecting surface 25 . The upper connecting surface 25 does not necessarily need to be provided with the reinforcing rib 25a. The upper surface 21 of the mounting recess 16 does not necessarily need to be provided with the first vertical groove 28, the second vertical groove 29, and the reinforcing groove 21a. The radius of the upper end 14a of the body 14 may be the same over the entire circumferential length.

[0047] In addition, within the scope of the spirit of the present invention, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described embodiments and variations may be combined as appropriate. [Explanation of symbols]

[0048] 1 bottle with handle 10 bottles 11 Handle 14 Torso 16 Mounting recess 21 Top side 22 Bottom side 23 bottom 31 Fixed part 32 Handle 33 Upper connection part 34 Lower connection part 35 1st claw part 36 2nd claw part 37 Third claw part 38 Step part O center axis W wall

Claims

1. The bottle has a central axis extending in the up-down direction, and a mounting recess is provided in the body of the bottle, the mounting recess being recessed toward the front and opening toward the rear in the radial direction. A handle is attached to the mounting recess, The inner surface of the mounting recess is an upper surface facing downward; a lower surface facing upward; a bottom surface facing rearward and connecting front ends of the upper surface and the lower surface; Equipped with The handle is a fixing portion extending in the vertical direction and fixed to a bottom surface of the mounting recess; a handle portion extending in the vertical direction and provided at the rear of the fixing portion; an upper connecting portion connecting the upper ends of the fixing portion and the handle portion; a lower connecting portion connecting the lower ends of the fixing portion and the handle portion, front ends of the upper connecting portion and the lower connecting portion protrude forward from the fixing portion and are embedded in a wall portion that forms an inner surface of the mounting recess; The front end portions of the upper connecting portion and the lower connecting portion are provided with: a first claw portion that protrudes upward and is embedded in the wall portion; a second claw portion that protrudes downward and is embedded in the wall portion; a third claw portion that protrudes in a left-right direction perpendicular to the front-rear direction when viewed from the top-bottom direction and is embedded in the wall portion, Each front end surface of the upper connecting portion and the lower connecting portion extends rearward via a step portion as it moves outward from a center portion in the left-right direction, and both side surfaces in the left-right direction of a portion including the front end portion of the upper connecting portion and the upper end portion of the fixing portion are perpendicular to the front end surface of the upper connecting portion and extend inward in the left-right direction, approaching each other in the left-right direction via a step portion as they extend rearward in a first cross-sectional view along the left-right direction; Both side surfaces in the left-right direction of a portion including the front end portion of the lower connecting portion and the lower end portion of the fixing portion are perpendicular to the front end surface of the lower connecting portion and extend inward in the left-right direction, approaching each other in the left-right direction via a step portion as they extend rearward in a second cross-sectional view along the left-right direction, the first claw portion and the second claw portion have a curved shape that protrudes outward in the up-down direction in a cross-sectional view along the up-down direction and the front-rear direction, The third claw portion formed on the upper connecting portion has a curved shape that protrudes outward in the left-right direction in the first cross-sectional view, The third claw portion formed on the lower connecting portion has a curved shape that protrudes outward in the left-right direction in the second cross-sectional view, a connecting portion between the first claw portion and the third claw portion intersects with the up-down direction and the left-right direction and has a curved shape that protrudes obliquely upward in a cross-sectional view along the front-rear direction, A bottle with a handle, wherein the connection portion between the second claw portion and the third claw portion intersects in the vertical and horizontal directions and has a curved shape that protrudes diagonally downward when viewed in cross section along the front-to-back direction.

2. When viewed in a cross section along the up-down direction and the front-rear direction, the radius of curvature of each of the front portions of the first claw portion and the second claw portion is larger than the radius of curvature of each of the rear portions of the first claw portion and the second claw portion; In the first cross-sectional view, a radius of curvature of a front portion of the third claw portion is larger than a radius of curvature of a rear portion of the third claw portion; In the second cross-sectional view, a radius of curvature of a front portion of the third claw portion is larger than a radius of curvature of a rear portion of the third claw portion; In a cross-sectional view intersecting the up-down direction and the left-right direction and along the front-rear direction, a radius of curvature of a front portion of a connection portion between the first claw portion and the third claw portion is larger than a radius of curvature of a rear portion of the connection portion between the first claw portion and the third claw portion, 2. The bottle with a handle according to claim 1, wherein, in a cross-sectional view intersecting the vertical and horizontal directions and along the front-to-back direction, the radius of curvature of the front portion of the connection between the second claw portion and the third claw portion is larger than the radius of curvature of the rear portion of the connection between the second claw portion and the third claw portion.

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