Trigger-type liquid ejector

Abstract

To provide a trigger-type liquid spouting unit which achieves both weight saving and assemblability.SOLUTION: A trigger-type liquid spouting unit 1 includes: a spouting unit main body 10; a nozzle member; a trigger part; and a cover 13. The cover 13 includes: a cover main body 51 having an insertion opening 51p to which the spouting unit main body 10 is inserted; and an engaged portion 54 that is elastically deformable in a first direction orthogonal to an opening direction of the insertion opening 51p. The engaged portion 54 includes: an inclined piece 54a extending in a direction of separating from an inner surface of the cover main body 51 in the first direction, from the outside in the opening direction toward the inside; and an engaging piece 54b which extends inward in the opening direction, from an inside end in the opening direction, out of the inclined piece 54a, and engages with an engaging part 63 provided on the spouting unit main body 10, from the outside in the opening direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a trigger-type liquid ejector.

Background Art

[0002] As a trigger-type liquid ejector, a configuration is disclosed that includes an ejector body having a pump section, a nozzle member attached to the front end of the ejector body, and a trigger section disposed so as to be movable rearward in a forward-biased state. In this type of trigger-type liquid ejector, by pulling the trigger section rearward to drive the pump section, the liquid in the container body is sent out by the pump section. The liquid sent out by the pump section is ejected forward through the ejection holes of the nozzle member.

[0003] For example, Patent Document 1 below discloses a trigger-type liquid ejector provided with a cover that covers the ejector body with the ejection holes exposed for the purpose of improving design and the like. The cover has the ejector body inserted therein from the front. At this time, an engaged portion provided on the cover overrides an engaging portion provided on the ejector body. Thereby, the cover is attached to the ejector body in a state where the engaged portion is engaged with the engaging portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in a trigger-type liquid ejector, in order to achieve weight reduction and the like, thinning of the cover has been considered. However, by making the cover thin, the cover is likely to deform, and as a result, the engaged portion may easily come off from the engaging portion. On the other hand, in order to ensure the engagement allowance between the engaged portion and the engaging portion, if the height dimension of the engaged portion is increased, it becomes difficult for the engaged portion to overcome the engaging portion when inserting the ejector body into the inside of the cover, and there is a possibility that the assemblability may decrease.

[0006] The present invention provides a trigger-type liquid ejector capable of achieving both weight reduction and assemblability.

Means for Solving the Problems

[0007] In order to solve the above problems, the present invention adopts the following aspects. A trigger-type liquid ejector according to an aspect of the present invention includes an ejector body having a pump unit that sends out a liquid accommodated in a container body, a nozzle member attached to a front end portion of the ejector body and having an ejection hole formed therein for ejecting the liquid sent out by the pump unit forward, a trigger unit disposed movably rearward in a forward biasing state and driving the pump unit, and a cover that covers the ejector body in a state where the ejection hole is exposed. The cover has an insertion opening into which the ejector body is inserted, a cover body attached to the ejector body through the insertion opening, and an engaged portion provided on the cover body and elastically deformable in a first direction intersecting the opening direction of the insertion opening. The engaged portion includes an inclined piece extending in a direction away from the inner surface of the cover body in the first direction as it goes from the outside to the inside in the opening direction, and an engaging piece extending from the inner end portion in the opening direction of the inclined piece to the inside in the opening direction and engaging with an engaging portion provided on the ejector body from the outside in the opening direction.

[0008] According to this aspect, a deflection space for the engaged portion can be formed in the portion surrounded by the inclined piece, the engaging piece, and the inner surface of the cover body. That is, when assembling the ejector body and the cover, when inserting the ejector body inside the cover, the engaged portion is pushed toward the inner surface of the cover body by the engaging portion, so that the engaged portion elastically deforms and falls into the deflection space. Thereby, even if the protruding height of the engaged portion from the inner surface of the cover body is increased, it is possible to easily overcome the engaging portion when assembling the cover to the ejector body. As a result, an engagement margin between the engaged portion and the engaging portion can be ensured, and the engagement strength between the ejector body and the cover can be ensured. And by ensuring the engagement margin between the engaged portion and the engaging portion, even when the cover (such as the cover body) is made thinner, it is possible to prevent the cover from accidentally coming off the ejector body. As a result, it is possible to achieve both weight reduction and ease of assembly.

[0009] In the trigger-type liquid ejector according to the above aspect, it is preferable that the cover is provided with restricting pieces that abut on the engaging portion on both sides of the engaging piece in a second direction that intersects the first direction when viewed from the opening direction, thereby restricting the movement of the cover in the second direction with respect to the ejector body. According to this aspect, by restricting the movement of the cover in the second direction with respect to the ejector body by the restricting pieces, it is possible to prevent the engagement between the engaging piece and the engaging portion from being accidentally released. Thereby, it is easy to maintain the engaged state between the engaged portion and the engaging portion.

[0010] In the trigger-type liquid ejector according to the above aspect, it is preferable that the inclined piece is formed to have a larger dimension in the second direction than the engaging piece, and the restricting pieces are integrally formed with the inclined piece at both ends of the inclined piece in the second direction. According to this aspect, it becomes easy to ensure the rigidity of the restricting pieces, and while realizing the thinning of the cover, the assembled state of the cover can be stabilized.

Effects of the Invention

[0011] According to the present invention, it is possible to achieve both weight reduction and assemblability.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the embodiments and modifications described below, corresponding components may be denoted by the same reference numerals and the description thereof may be omitted. As shown in FIG. 1, the trigger-type liquid ejector 1 is attached to a container body A in which a liquid is stored, and ejects the liquid forward. The trigger-type liquid ejector 1 includes an ejector body 10, a nozzle member 11, a trigger portion 12, and a cover 13. Each component of the trigger-type liquid ejector 1 is a molded product made of synthetic resin unless otherwise specified.

[0014] The ejector body 10 includes a vertical supply cylinder portion 21, a mounting cap 22, a pipe 23, an injection cylinder portion 24, a relay member 25, an upper plate member 27, and a pump portion 26. Hereinafter, the direction along the central axis O1 of the vertical supply cylinder portion 21 is referred to as the vertical direction, and the bottom side (not shown) of the container body A along the vertical direction is referred to as the lower side, and the opposite side is referred to as the upper side. When viewed from the vertical direction, the side where the nozzle member 11 is located with respect to the vertical supply cylinder portion 21 is referred to as the front side, and the opposite side is referred to as the rear side. When viewed from the vertical direction, the direction orthogonal to the front-rear direction is referred to as the left-right direction.

[0015] The vertical supply cylinder portion 21 sucks up the liquid in the container body A through the mouth portion A1 of the container body A. The vertical supply cylinder portion 21 is formed in a multi-stage cylindrical shape with a diameter that decreases upward. Specifically, the vertical supply cylinder portion 21 includes a small-diameter portion 21a located above, and a large-diameter portion 21c that continues below the small-diameter portion 21a via a step portion 21b.

[0016] The large-diameter portion 21c is provided with a flange portion 21d that projects outward in the radial direction. A ball valve 28 is provided at the upper end portion within the small-diameter portion 21a. The ball valve 28 switches between communication and cutoff between the vertical supply cylinder portion 21 and the injection cylinder portion 24 within the small-diameter portion 21a. Specifically, the ball valve 28 is a check valve that allows the flow of liquid from the vertical supply cylinder portion 21 to the injection cylinder portion 24 and restricts the flow of liquid from the injection cylinder portion 24 to the vertical supply cylinder portion 21. The ball valve 28 is formed of metal, synthetic resin, or the like.

[0017] The mounting cap 22 is formed in a cylindrical shape that extends in the vertical direction. The mounting cap 22 is detachably tightened to the mouth portion A1 with the flange portion 21d sandwiched between the upper end opening edge of the mouth portion A1 of the container body A. Note that the fixing method between the mounting cap 22 and the mouth portion A1 may be a method other than a screw (for example, fitting, etc.). In the illustrated example, the central axis O1 of the vertical supply cylinder portion 21 is located behind the container axis of the container body A.

[0018] The pipe 23 is inserted into the vertical supply cylinder portion 21 through the inside of the large-diameter portion 21c and is fitted into the small-diameter portion 21a from below. The pipe 23 extends downward within the container body A when the trigger-type liquid ejector 1 is mounted on the container body A.

[0019] The injection cylinder portion 24 guides the liquid within the vertical supply cylinder portion 21 toward the nozzle member 11. The injection cylinder portion 24 extends forward from the upper end portion of the vertical supply cylinder portion 21. The relay member 25 connects between the injection cylinder portion 24 and the nozzle member 11. The relay member 25 is assembled to the injection cylinder portion 24 from the front.

[0020] The pump section 26 stores and pumps the liquid in the container body A. The pump section 26 includes a cylinder 31 and a piston 32. The cylinder 31 is provided in front of the small-diameter section 21a of the vertical supply cylinder section 21. The cylinder 31 is formed in a bottomed cylindrical shape that opens forward. The piston 32 is provided so as to be movable back and forth with respect to the cylinder 31. The piston 32 is formed in a bottomed cylindrical shape that opens backward. The piston 32 slides on the inner peripheral surface of the cylinder 31 as it moves back and forth with respect to the cylinder 31. The inside of the cylinder 31 is depressurized as the piston 32 moves forward, and pressurized as the piston 32 moves backward.

[0021] The inside of the cylinder 31 communicates with the inside of the vertical supply cylinder section 21 and the injection cylinder section 24 through a communication path 36 provided in the vertical supply cylinder section 21. The communication path 36 surrounds the periphery of the ball valve 28 in the vertical supply cylinder section 21. The communication path 36 communicates with the inside of the vertical supply cylinder section 21 through a communication hole 21f formed at the upper end of the vertical supply cylinder section 21. On the other hand, the communication path 36 communicates with the inside of the injection cylinder section 24 through the rear end opening of the injection cylinder section 24.

[0022] The upper plate member 27 is attached to the injection cylinder section 24 so as to surround the injection cylinder section 24 from above and laterally. The upper plate member 27 is formed in a downward U shape in a front view seen from the front. The upper plate member 27 includes a leaf spring member 40, an elastic member 41, and a bearing portion 42. The leaf spring member 40 is provided above the injection cylinder section 24 along the front-rear direction. A locking projection 40a protruding upward is formed at the rear end portion of the leaf spring member 40. The locking projection 40a is locked in a locking recess 24a formed at the rear end portion of the injection cylinder section 24. A locking recess 40b is formed at the front end portion of the leaf spring member 40. A locking projection 25a formed on the relay member 25 is locked in the locking recess 40b. Thereby, the leaf spring member 40 connects between the injection cylinder section 24 and the relay member 25.

[0023] The elastic member 41 extends downward from both end edges in the left - right direction at the front end portion of the leaf spring member 40. The elastic member 41 has a convex - curved shape toward the front and is configured to be elastically deformable in the front - rear direction starting from the boundary portion (upper end portion) with the leaf spring member 40. The bearing portion 42 extends downward from both end edges in the left - right direction at the rear end portion of the leaf spring member 40. The bearing portion 42 has a convex - curved shape in the front - rear direction and is open toward the rear.

[0024] The trigger portion 12 extends downward from the upper plate member 27. Specifically, the trigger portion 12 extends while curving forward as it goes downward in front of the vertical supply cylinder portion 21. The upper end portion of the trigger portion 12 is supported by the bearing portion 42 so as to be rotatable about an axis along the left - right direction. On the other hand, the trigger portion 12 is connected to the elastic member 41 at a portion located below the bearing portion 42. Thereby, the trigger portion 12 is configured to be movable rearward in a forward - biased state by the elastic member 41 while being rotatably supported by the bearing portion 42.

[0025] The trigger portion 12 is connected to the front end portion of the piston 32. Therefore, the piston 32 moves rearward with respect to the cylinder 31 as the trigger portion 12 moves rearward.

[0026] The nozzle member 11 is attached to the relay member 25 from the front. The nozzle member 11 is formed in a bottomed cylindrical shape that opens rearward. An ejection hole 11a extending in the front - rear direction is formed in the top wall portion (front wall portion) of the nozzle member 11. The ejection hole 11a communicates with the injection cylinder portion 24 through the inside of the nozzle member 11 and the inside of the relay member 25.

[0027] The cover 13 surrounds a part of the ejector body 10, a part of the trigger portion 12, and a part of the upper plate member 27 from above, rearward, and laterally. The cover 13 is attached to the ejector body 10 by being inserted toward the front of the ejector body 10.

[0028] The cover 13 is configured such that a cover body 51, a protruding strip portion 52, a first engaged portion 53, a second engaged portion 54, and a regulating piece 55 are integrally formed. The cover body 51 is formed in a box shape with an insertion opening 51p that opens forward (in the opening direction). Specifically, the cover body 51 includes an upper wall 51a, a pair of side walls 51b, a rear wall 51c, and a bottom wall 51d.

[0029] The above-mentioned "opening direction" is a direction intersecting the opening surface of the insertion opening 51p, which is the front-rear direction in this embodiment. Moreover, the outside in the opening direction refers to the direction toward the outside of the cover 13, and the inside in the opening direction refers to the direction toward the inside of the cover 13.

[0030] The upper wall 51a is disposed above the injection cylinder portion 24, the relay member 25, and the upper plate member 27 in a state where the cover 13 is attached to the ejector body 10. The front edge of the upper wall 51a is located behind the nozzle member 11. Therefore, the cover 13 covers the ejector body 10 and the trigger portion 12 in a state where the nozzle member 11 (ejection hole 11a) is exposed forward. The side walls 51b extend downward from both left and right edges in the horizontal direction of the upper wall 51a. The side walls 51b surround the ejector body 10, the trigger portion 12, and the upper plate member 27 from both sides in the horizontal direction. The lower edge of the side wall 51b extends while curving downward as it goes rearward. Therefore, the lower end portion of the elastic member 41 protrudes downward from the lower edge of the side wall 51b at the front end portion of the side wall 51b.

[0031] The rear wall 51c bridges between the rear edge of the upper wall 51a and the rear edges of the side walls 51b. The rear wall 51c is formed in an L shape that protrudes rearward in a vertical cross-sectional view along the vertical direction. Specifically, the rear wall 51c extends rearward as it goes downward, and then extends forward as it further goes downward.

[0032] The bottom wall 51d extends forward from the lower end edge of the rear wall 51c. The front edge of the bottom wall 51d is in proximity to or in contact with the vertical supply cylinder portion 21 from the rear. The left and right end edges of the bottom wall 51d are continuous with the lower end edges of the rear portions of the side walls 51b. The front edge of the bottom wall 51d, the lower end edge of the side wall 51b, and the front edge of the upper wall 51a form the insertion opening 51p of the cover body 51.

[0033] The protruding strip portion 52 is formed on the inner surface of each side wall 51b (the facing surface of each side wall 51b). The protruding strip portion 52 extends in the front-rear direction in a state of protruding inward in the left-right direction from the inner surface of each side wall 51b. The protruding strip portion 52 is inserted into a rail portion (not shown) provided on the ejector body 10 from the rear. Thereby, the vertical movement of the cover 13 with respect to the ejector body 10 is restricted.

[0034] The first engaged portion 53 protrudes downward from the rear end portion of the upper wall 51a. The first engaged portion 53 is engaged with the first engaging portion 62 formed on the injection cylinder portion 24 from the front.

[0035] The second engaged portion 54 protrudes upward from the front end portion of the bottom wall 51d. The second engaged portion 54 is engaged with the second engaging portion 63 formed on the vertical supply cylinder portion 21 from the front. The second engaging portion 63 is formed on an extension piece 64 provided on the vertical supply cylinder portion 21. The extension piece 64 extends rearward from the stepped portion 21b. The extension piece 64 extends cantilevered with the vertical direction as the thickness direction. The second engaging portion 63 protrudes downward from the tip end portion (rear end portion) of the extension piece 64. In the present embodiment, each of the walls 51a to 51d of the cover body 51 is formed thinner than the extension piece 64. Therefore, the extension piece 64 has higher rigidity than each of the walls 51a to 51d of the cover body 51. Note that the extension piece 64 may be provided at an arbitrary position in the vertical supply cylinder portion 21.

[0036] The second engaging portion 63 is formed in a triangular shape in side view. Specifically, the front surface of the second engaging portion 63 constitutes an engaging surface that extends perpendicular to the extending piece 64. On the other hand, the rear surface of the second engaging portion 63 constitutes a climbing-over surface that extends obliquely upward as it goes rearward.

[0037] As shown in FIGS. 2 and 3, the second engaged portion 54 includes an inclined piece 54a and an engaging piece 54b. The inclined piece 54a extends upward (in a direction away from the inner surface of the bottom wall 51d in the first direction) from the inner surface at the front end of the bottom wall 51d. Specifically, the inclined piece 54a extends obliquely upward as it goes from the front to the rear (from the outside to the inside in the opening direction). Note that the dimension of the inclined piece 54a in the left-right direction is shorter than the dimension of the bottom wall 51d in the left-right direction.

[0038] The engaging piece 54b extends rearward (toward the inside in the opening direction) from the central portion in the left-right direction of the rear end portion (the inner end portion in the opening direction) of the inclined piece 54a. Therefore, both end portions of the inclined piece 54a in the left-right direction protrude to both sides in the left-right direction (the second direction) with respect to the inclined piece 54a. The rear end of the engaging piece 54b is close to or in contact with the front surface of the second engaging portion 63 from the front. By the rear end of the engaging piece 54b coming into contact with the front surface of the second engaging portion 63, the second engaged portion 54 is engaged with the second engaging portion 63 from the front. Thereby, the rearward movement of the cover 13 with respect to the ejector body 10 is restricted. In the illustrated example, the upper rear end edge of the engaging piece 54b is formed on an inclined surface that extends downward as it goes rearward.

[0039] In the cover 13, a deflection space S is formed between the engaging piece 54b and the inner surface of the bottom wall 51d. The deflection space S is surrounded by the inclined piece 54a, the engaging piece 54b, and the inner surface of the bottom wall 51d, and is open toward the rear and downward. The deflection space S functions as a displacement space for the second engaged portion 54 and the restricting piece 55 when assembling the cover 13 to the ejector body 10.

[0040] As shown in FIGS. 2 and 4, the regulating piece 55 extends rearward from both end portions in the left - right direction of the inclined piece 54a. The rear - end edge of the regulating piece 55 is located rearward of the engaging piece 54b. The rear - end portion of the regulating piece 55 overlaps the second engaging portion 63 when viewed from the left - right direction. That is, the regulating piece 55 surrounds the second engaging portion 63 from both sides in the left - right direction. The regulating piece 55 restricts the left - right movement of the cover 13 with respect to the ejector body 10 when the second engaging portion 63 approaches or abuts in the left - right direction.

[0041] In the illustrated example, the engaging piece 54b bridges the inner surfaces (surfaces facing each other in the left - right direction) of the respective regulating pieces 55. However, the engaging piece 54b may be spaced apart from the inner surfaces of the respective regulating pieces 55. In the cover body 51, an opening hole 51f is formed in a portion from the lower - end portion of the rear wall 51c to the rear - end portion of the bottom wall 51d. The opening hole 51f is a forming hole for forming the second engaged portion 54 and the regulating piece 55. The opening hole 51f is formed at a position overlapping the second engaged portion 54 and the regulating piece 55 when the cover body 51 is viewed from below and rearward. However, the opening hole 51f is not an essential configuration.

[0042] Next, the operation of the trigger - type liquid ejector 1 configured as described above will be described. In the following description, it is assumed that the respective parts of the ejector body 10 are already filled with liquid. As shown in FIG. 1, to eject liquid using the trigger-type liquid ejector 1, first, hook the index finger or middle finger onto the trigger portion 12 from the front, and hold the trigger-type liquid ejector 1 with the thumb hooked onto the mounting cap 22. In this state, pull the trigger portion 12 backward. Then, as the trigger portion 12 moves backward against the biasing force of the elastic member 41, the piston 32 retreats. As a result, the inside of the cylinder 31 is pressurized, and the liquid stored in the cylinder 31 is pumped into the communication path 36. A part of the liquid flowing through the communication path 36 flows into the vertical supply cylinder portion 21 through the communication hole 21f, thereby pushing down the ball valve 28. As a result, the communication between the inside of the container body A and the inside of the injection cylinder portion 24 through the vertical supply cylinder portion 21 is blocked. On the other hand, a part of the liquid flowing through the communication path 36 flows into the injection cylinder portion 24. The liquid that has flowed into the injection cylinder portion 24 flows into the nozzle member 11 through the relay member 25 and is ejected through the ejection hole 11a.

[0043] After the liquid is ejected, when the backward pressing force applied to the trigger portion 12 is released, the trigger portion 12 is biased forward by the restoring force of the elastic member 41 and returns to its original position. Along with this, as the piston 32 moves forward, the inside of the cylinder 31 is depressurized. As a result, the ball valve 28 rises, and the inside of the container body A and the inside of the cylinder 31 communicate with each other through the vertical supply cylinder portion 21 and the communication path 36. As a result, the liquid in the container body A is sucked up into the vertical supply cylinder portion 21 and introduced into the cylinder 31 through the communication path 36.

[0044] Next, the operation when assembling the cover 13 to the ejector body 10 will be described. In the following description, the operation of the second engaging portion 63 and the second engaged portion 54 will be mainly described. In the following description, among the trigger-type liquid ejector 1, the parts other than the cover 13 are collectively referred to as the ejector body 10 and the like. First, with the insertion opening 51p of the cover body 51 facing forward, the ejector body 10 and the like and the cover 13 are brought closer in the front-rear direction. Then, the ejector body 10 is inserted inside the cover 13. Then, the ejector body 10 moves backward inside the cover 13 as the rail portion is guided by the ridge portion 52. In the process of the ejector body 10 and the like moving backward, the first engaged portion 53 gets over the first engaging portion 62, and the first engaged portion 53 engages with the first engaging portion 62 from the front. On the other hand, in the process of the ejector body 10 and the like moving backward, the second engaged portion 54 gets over the second engaging portion 63, and the second engaged portion 54 engages with the second engaging portion 63 from the front. Thereby, the cover 13 is assembled to the ejector body 10.

[0045] Here, as shown in FIG. 5, when the second engaged portion 54 gets over the second engaging portion 63, first, the front surface of the inclined piece 54a contacts the overstep surface (rear surface) of the second engaging portion 63. In this state, as the ejector body 10 and the like move backward with respect to the cover 13, the front surface of the inclined piece 54a and the overstep surface of the second engaging portion 63 slide on each other. Thereby, the second engaged portion 54 is pushed downward, and the second engaged portion 54 elastically deforms downward. That is, the second engaged portion 54 elastically deforms so as to fall into the deflection space S as the ejector body 10 moves backward with respect to the cover 13, and gets over the second engaging portion 63. At this time, in the present embodiment, since the second engaged portion 54 and the restricting piece 55 are integrally formed, the restricting piece 55 also elastically displaces as the second engaged portion 54 elastically deforms.

[0046] After the second engaged portion 54 (and the restricting piece 55) gets over the second engaging portion 63, it restores upward. As a result, the engaging piece 54b comes close to or contacts the engaging surface (front surface) of the second engaging portion 63 from the front, and the second engaged portion 54 engages with the second engaging portion 63 from the front.

[0047] In addition, in this embodiment, although the configuration in which the second engaged portion 54 elastically deforms when the second engaged portion 54 gets over the second engaging portion 63 has been described, the configuration is not limited to this. For example, the cover main body 51 (such as the bottom wall 51d and the rear wall 51c, etc.) may elastically deform so that the second engaged portion 54 elastically displaces downward, or a configuration in which both the second engaged portion 54 and the cover main body 51 elastically deform may be adopted. Further, when the second engaged portion 54 gets over the second engaging portion 63, the extending piece 64 may elastically deform upward.

[0048] As described above, in the trigger-type liquid ejector 1 of this embodiment, the second engaged portion 54 is configured to include an inclined piece 54a that extends in a direction away from the inner surface of the cover main body 51 (bottom wall 51d) from the front to the rear, and an engaging piece 54b that extends rearward from the inclined piece 54a and engages with the second engaging portion 63 from the front. According to this configuration, a deflection space S of the second engaged portion 54 can be formed in the portion surrounded by the inclined piece 54a, the engaging piece 54b, and the bottom wall 51d. That is, when the ejector main body 10 is inserted inside the cover 13 during the assembly of the ejector main body 10 and the cover 13, the second engaged portion 54 is pushed toward the inner surface (downward) of the bottom wall 51d by the second engaging portion 63, so that the second engaged portion 54 elastically deforms and falls into the deflection space S. Thereby, even if the protruding height of the second engaged portion 54 from the inner surface of the bottom wall 51d is increased, it is possible to facilitate getting over the second engaging portion 63 when assembling the cover 13 to the ejector main body 10. As a result, an engagement margin between the second engaged portion 54 and the second engaging portion 63 can be ensured, and the engagement strength between the ejector main body 10 and the cover 13 can be ensured. And by ensuring the engagement margin between the second engaged portion 54 and the second engaging portion 63, even when the cover 13 (such as the cover main body 51, etc.) is made thinner, it is possible to prevent the cover 13 from accidentally coming off from the ejector main body 10. As a result, it is possible to achieve both weight reduction and assemblability.

[0049] In the present embodiment, the cover 13 is configured to include a restricting piece 55 that restricts the left - right movement of the cover 13 with respect to the ejector body 10 by abutting against the second engaging portion 63 on both sides in the left - right direction with respect to the engaging piece 54b. According to this configuration, by restricting the left - right movement of the cover 13 with respect to the ejector body 10 by the restricting piece 55, it is possible to suppress the accidental release of the engagement between the engaging piece 54b and the second engaging portion 63. Thereby, it is easy to maintain the engaged state between the second engaged portion 54 and the second engaging portion 63.

[0050] In the present embodiment, the restricting piece 55 is configured to be integrally formed with the inclined piece 54a. According to this configuration, it is easy to ensure the rigidity of the restricting piece 55, and while realizing the thinning of the cover 13, the assembled state of the cover 13 can be stabilized.

[0051] As described above, the preferred embodiments of the present invention have been described, but the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other changes in the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above - described description and is limited only by the appended claims. In the above - described embodiment, the case where the second engaged portion 54 formed on the bottom wall 51d of the cover body 51 is used as the engaged portion according to the present invention has been described, but it is not limited to this configuration. For example, the first engaged portion 53 may be used as the engaged portion according to the present invention. In the above - described embodiment, the configuration in which the insertion opening 51p opens forward has been described, but it is not limited to this configuration. The insertion opening 51p may open in the vertical direction or the like. In this case, the vertical direction becomes the opening direction, and the left - right direction and the front - rear direction become the first direction and the second direction, respectively.

[0052] In the above - described embodiment, the configuration including only one engaged portion according to the present invention has been described, but it is not limited to this configuration. The trigger - type liquid ejector 1 may include a plurality of engaged portions according to the present invention. The cover 13 can be appropriately changed as long as it covers the ejector body 10 in a state where the ejection hole 11a is exposed. In the above-described embodiment, the configuration in which the restricting pieces 55 are provided on both sides of the engaging piece 54b has been described. However, the restricting pieces 55 are not an essential configuration. Further, the restricting pieces 55 may be formed separately from the engaging piece 54b.

[0053] In addition, within the scope not departing from the gist of the present invention, it is possible as appropriate to replace the constituent elements in the above-described embodiment with well-known constituent elements, and the above-described modification examples may also be combined as appropriate.

Explanation of Reference Numerals

[0054] 1: Trigger-type liquid ejector 10: Ejector body 11: Nozzle member 11a: Ejection hole 12: Trigger part 13: Cover 26: Pump part 51: Cover body 51p: Insertion opening 54: Second engaged part (engaged part) 54a: Inclined piece 54b: Engaging piece 55: Restricting piece 63: Second engaging part (engaging part) A: Container body

Claims

【Claim 1】 An ejector body having a pump section for discharging a liquid contained in a container body; A nozzle member attached to the front end of the ejector body and having ejection holes formed therein for ejecting the liquid discharged by the pump section forward; A trigger section disposed to be movable rearward in a forwardly biased state for driving the pump section; A cover for covering the ejector body with the ejection holes exposed; and The cover includes: A cover body having an insertion opening into which the ejector body is inserted and attached to the ejector body through the insertion opening; An engaged portion provided on the cover body and elastically deformable in a first direction intersecting the opening direction of the insertion opening; The engaged portion includes: An inclined piece extending in a direction away from the inner surface of the cover body in the first direction as it extends from the outside to the inside in the opening direction; An engaging piece extending inward in the opening direction from the inner end portion in the opening direction of the inclined piece and engaging with an engaging portion provided on the ejector body from the outside in the opening direction; A deflection space for elastic deformation of the engaged portion in the first direction is formed in a portion surrounded by the inner surface of the cover body, the inclined piece, and the engaging piece; The cover includes restricting pieces that abut against the engaging portion on both sides of the engaging piece in a second direction intersecting the first direction when viewed from the opening direction, thereby restricting movement of the cover in the second direction with respect to the ejector body; The inclined piece is formed to have a larger dimension in the second direction than the engaging piece; The restricting pieces are integrally formed with the inclined piece at both end portions of the inclined piece in the second direction, a trigger-type liquid ejector.

Images