JP7573493B2 - Trigger-type liquid ejector - Google Patents

Description

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

A trigger-type liquid ejector is disclosed that includes an ejector body having a pump section, a nozzle member having an ejection hole for ejecting liquid, a trigger section that operates the pump section as it moves back and forth, and a cover that covers the ejector body while exposing the ejection hole (see, for example, Patent Document 1 below).

To perform the ejection operation with this type of trigger-type liquid ejector, for example, the index finger (or middle finger) is hooked on the trigger portion and the hand is placed around the portion of the ejector body that is located below the cover (for example, the attachment cap, etc.). In this state, when the trigger portion is pulled backward, the pump portion operates as the trigger portion moves backward, and liquid is ejected through the ejection hole. In particular, when ejecting, the underside of the rear end portion of the cover (hereinafter referred to as the support portion) is supported by the back of the hand (the portion located between the thumb and index finger), so that the trigger-type liquid ejector can be held stably even when the contents are contained in the container body and the weight is heavy.

JP 2020-82042 A

In order to further improve the operability of a trigger-type liquid sprayer, it is possible to secure a large surface area for the support part. However, if the surface area of the support part is increased, the amount that the cover protrudes rearward from the sprayer body increases, which may lead to an increase in the size of the trigger-type liquid sprayer. As a result, there is a possibility that the space efficiency will decrease during the distribution stage (when displayed in stores, etc.) and when not in use.

The present invention provides a trigger-type liquid ejector that is small and space-efficient while maintaining ease of use.

In order to solve the above problems, the present disclosure employs the following aspects.
A trigger-type liquid ejector according to one aspect of the present disclosure comprises a ejector body having a pump section that ejects liquid contained in a container body, a nozzle member attached to the front end of the ejector body and formed with an ejection hole that ejects liquid ejected by the pump section forward, a trigger section arranged to be movable rearward in a forward biased state and to drive the pump section, and a cover that covers the ejector body and has a support section at its rear end that faces downward, the support section being configured to be movable in the forward/rearward direction relative to the ejector body between a first position that protrudes rearward from the ejector body and a second position that is located forward of the first position.

According to this aspect, by moving the cover to the first position during the ejection operation, the ejection operation can be performed with the trigger-type liquid ejector supported on the back of the hand via the support part, which allows the trigger-type liquid ejector to be stably held, improving operability.
On the other hand, by moving the cover to the second position during distribution or when not in use, the amount of rearward protrusion of the cover from the ejector body can be reduced, thereby providing a small-sized trigger-type liquid ejector with excellent space efficiency.

In the trigger-type liquid ejector of the above-mentioned aspect, it is preferable that one of the cover and the ejector body is provided with a rail extending in the front-to-rear direction and supported by a rail guide provided on the other member so as to be movable in the front-to-rear direction, and that the rail and rail guide guide the cover in the front-to-rear direction between the first position and the second position while restricting movement of the cover in a direction intersecting the front-to-rear direction relative to the ejector body.
According to this aspect, the cover can be stably moved between the first position and the second position, thereby providing a trigger-type liquid ejector with excellent operability.

In the trigger-type liquid ejector of the above aspect, it is preferable that the cover is provided with a regulating portion that moves forward and backward relative to the trigger portion as the cover moves between the first position and the second position, and that the regulating portion engages with the trigger portion from the rear of the trigger portion when the cover is in the second position to regulate the rearward movement of the trigger portion, and allows the rearward movement of the trigger portion when the cover is in the first position.
According to this aspect, when the cover is in the second position, the restricting portion engages with the trigger portion from the rear of the trigger portion to restrict the rearward movement of the trigger portion, thereby making it possible to prevent the trigger portion from being unexpectedly operated and causing liquid to be sprayed when the cover is in the second position.
On the other hand, when the cover is in the first position, the trigger portion is permitted to move rearward, which eliminates the need for any operation other than the operation of the cover to transition the trigger-type liquid ejector to a state in which ejection is possible.
As a result, it is possible to prevent unexpected liquid from spraying out when the cover is in the retracted position while maintaining operability.

In the trigger-type liquid ejector of the above-mentioned aspect, it is preferable that the trigger portion comprises a trigger body extending in the vertical direction and capable of being grasped, and an engagement portion protruding in the left-right direction from the trigger body and engaging with the regulating portion from the front of the regulating portion when the cover is in the second position.
According to this aspect, the restricting portion engages with the trigger body at a location (engagement portion) separate from the trigger body, so that the engagement portion with the restricting portion can be provided without changing the shape of the trigger body itself. This ensures the engagement strength between the trigger portion and the restricting portion when the cover is in the storage position. On the other hand, it is possible to suppress a decrease in the rigidity of the trigger body itself due to the addition of the engagement portion with the restricting portion, and it is possible to effectively operate the pump portion according to the amount of movement of the trigger portion during the ejection operation.

In the trigger-type liquid ejector of the above aspect, when the cover is in the second position, it is preferable that the trigger portion engages with the restricting portion in a direction intersecting the movement direction of the cover when viewed from the left-right direction.
According to this aspect, the component of the load acting between the trigger part and the restricting part in the movement direction of the cover (front-rear direction) during the ejection operation can be made smaller than when the movement direction of the trigger part and the movement direction of the cover are the same. This makes it possible to prevent the cover from moving unexpectedly to the first position due to the operation of the trigger part when the cover is in the second position.

In the trigger-type liquid ejector of the above aspect, the nozzle member is attached to the ejector body so as to be movable between a communication position in which the interior of the ejector body is connected to the ejection hole, and a blocking position in which communication between the interior of the ejector body and the ejection hole is blocked, and it is preferable that an opening/closing mechanism is provided between the nozzle member and the cover for moving the nozzle member from the blocking position to the communicating position as the cover moves from the second position to the first position.
According to this aspect, by keeping the nozzle member in the blocking position, it is possible to prevent unexpected ejection of liquid. Also, by moving the nozzle member from the blocking position to the communicating position in conjunction with the movement of the cover from the second position to the first position, it is not necessary to operate the cover and the nozzle member separately. Therefore, it is possible to prevent unexpected ejection of liquid when the cover is in the retracted position while maintaining operability.

According to this aspect of the present invention, it is possible to provide a trigger-type liquid ejector that is small and space-efficient while maintaining operability.

1 is a side view, partially in cross section, of the trigger-type liquid ejector (in a storage position) according to a first embodiment; FIG. FIG. 2 is a side view showing a part in cross section of the trigger type liquid ejector (in a protruding position) according to the first embodiment. FIG. 2 is an exploded perspective view of the trigger type liquid ejector according to the first embodiment. 4 is a cross-sectional view corresponding to the line IV-IV in FIG. 3 is a cross-sectional view corresponding to line VV in FIG. 2. 2 is a cross-sectional view corresponding to line VI-VI in FIG. 2 is a cross-sectional view corresponding to line VII-VII in FIG. 1. 8 is a cross-sectional view corresponding to line VIII-VIII in FIG. 7. FIG. 9 is a cross-sectional view corresponding to FIG. 8, showing the trigger-type liquid ejector in a projected position. FIG. 2 is a side view showing the periphery of the nozzle member in the trigger type liquid ejector (in the stored position) according to the first embodiment. FIG. 2 is a side view showing the periphery of the nozzle member in the trigger type liquid ejector (in a protruding position) according to the first embodiment. FIG. 11 is a side view of a trigger-type liquid ejector according to a second embodiment (in a stored position). FIG. 11 is a side view of a trigger type liquid ejector (in a protruding position) according to a second embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In the embodiments and variations described below, the same reference numerals may be used to designate corresponding configurations, and descriptions thereof may be omitted.

First Embodiment
1 and 2, the trigger type liquid ejector 1 of this embodiment is capable of ejecting liquid contained in a container body A. The trigger type liquid ejector 1 comprises an ejector body 10, a nozzle member 11, a trigger portion 12, and a cover 14. Unless otherwise specified, each of the components of the trigger type liquid ejector 1 is a molded product made of synthetic resin such as an olefin-based resin.

The ejector body 10 includes a vertical supply tube section 20, an attachment cap 21, an ejection tube section 22, a relay member 23, a pump section 24, and a biasing member 25.

Hereinafter, the direction along the axis O1 of the vertical supply tube section 20 (axial direction) is referred to as the up-down direction, and the bottom (not shown) side of the container body A along the up-down direction is referred to as the lower side, and the opposite side is referred to as the upper side. The direction intersecting the axis O1 when viewed from the up-down direction is referred to as the radial direction. Within the radial direction, the direction in which the vertical supply tube section 20 and the nozzle member 11 are aligned (the direction along the axis O2 of the nozzle member 11) is referred to as the front-rear direction. Within the front-rear direction, the nozzle member 11 side with respect to the vertical supply tube section 20 is referred to as the front side, and the opposite side is referred to as the rear side. Additionally, within the radial direction, the direction perpendicular to the front-rear direction when viewed from the up-down direction is referred to as the left-right direction.

The vertical supply tube section 20 is where the liquid pumped up from inside the container body A by the pump section 24 flows. The vertical supply tube section 20 is formed in a multi-stage cylindrical shape with the diameter decreasing the further up it is located. Specifically, the vertical supply tube section 20 has a small diameter section 20a located at the top and a large diameter section 20b connected to the bottom of the small diameter section 20a. The large diameter section 20b is provided with a flange section 20c that protrudes radially outward.

The attachment cap 21 is formed into a cylindrical shape that extends in the vertical direction. The attachment cap 21 is removably fastened to the mouth of the container body A with the flange portion 20c sandwiched between the attachment cap 21 and the upper end opening edge of the mouth portion (not shown). Note that the method of fixing the attachment cap 21 to the mouth portion may be a method other than a screw (e.g., fitting, etc.).

The injection tube portion 22 allows the liquid in the vertical supply tube portion 20 to flow toward the nozzle member 11. The injection tube portion 22 extends forward from the upper end of the vertical supply tube portion 20. A valve body (not shown) is provided between the vertical supply tube portion 20 and the injection tube portion 22 to allow the flow of liquid from the vertical supply tube portion 20 to the injection tube portion 22 and to regulate the flow of liquid from the injection tube portion 22 to the vertical supply tube portion 20.

The relay member 23 connects between the injection tube portion 22 and the nozzle member 11. The relay member 23 is attached to the injection tube portion 22 from the front. The relay member 23 includes a connecting tube 23a and a guide shaft 23b.
Connecting cylinder 23a extends forward along axis O2 relative to injection cylinder portion 22. The inside of connecting cylinder 23a is in communication with the inside of injection cylinder portion 22.
The guide shaft 23b extends coaxially (axis O2) with the connecting cylinder 23a inside the connecting cylinder 23a. A first switching groove 23c is formed on the outer circumferential surface of the guide shaft 23b. The first switching groove 23c is a groove that extends in the front-rear direction on the outer circumferential surface of the guide shaft 23b. A plurality of first switching grooves 23c are provided at intervals around the axis O2.

The pump portion 24 stores and pumps the liquid in the container body A in response to the movement of the trigger portion 12. The pump portion 24 includes a cylinder 31 and a piston 32.
The cylinder 31 is provided in front of the small diameter portion 20a of the vertical supply tube portion 20. The cylinder 31 is formed in a bottomed cylindrical shape that protrudes on both left and right sides of the vertical supply tube portion 20 (small diameter portion 20a) and opens forward.

The piston 32 is provided so as to be movable in the forward and backward directions relative to the cylinder 31. The piston 32 slides on the inner peripheral surface of the cylinder 31 as it moves forward and backward relative to the cylinder 31. The vertical supply tube section 20 is provided with a valve body (not shown) that allows the flow of liquid from inside the container body A to the cylinder 31 and regulates the flow of liquid from the cylinder 31 into the container body A.

The trigger portion 12 is provided in front of the pump portion 24 so as to be movable back and forth. Specifically, the trigger portion 12 includes a trigger body 12a, a support piece 12b, and a spring receiving portion (engagement portion) 12c.
The trigger body 12a has a front wall portion 41 and a peripheral wall portion 42, and is formed in a shallow box shape that is open toward the rear. The trigger body 12a extends in front of the pump portion 24, inclining forward from top to bottom. The trigger body 12a is the part that is gripped when performing a spraying operation, and an index finger or the like is hooked from the front via the front wall portion 41. The front end portion of the piston 32 is connected to the vertical middle portion of the trigger body 12a. That is, the piston 32 moves back and forth in accordance with the back and forth movement of the trigger body 12a.

The support pieces 12b are provided in a pair on the left and right at the upper end of the trigger body 12a. The support pieces 12b extend upward on both the left and right sides of the relay member 23. The upper end of each support piece 12b is supported by the relay member 23 so as to be rotatable about an axis along the left and right direction. Therefore, the trigger part 12 is configured to be rotatable about an axis along the left and right direction with the upper end of each support piece 12b as a fulcrum. In this embodiment, the movement trajectory L1 (see FIG. 8) of the trigger part 12 at any position is an arc-shaped protrusion downward. Specifically, the trigger part 12 is located at the uppermost position at the front end position, and describes a movement trajectory L1 that moves downward as it approaches the rear end position.

The spring receiving portion 12c is provided in a pair on both the left and right sides of the peripheral wall portion 42. The spring receiving portion 12c protrudes from the trigger body 12a (peripheral wall portion 42) on both the left and right sides. Each spring receiving portion 12c is open upward and rearward. Of the walls constituting the spring receiving portion 12c, the outer wall portion 43 located on the outside in the left and right direction has a recess 43a formed therein. The recess 43a opens rearward at the lower end of the outer wall portion 43.

As shown in Figs. 1 to 3, the biasing member 25 biases the trigger portion 12 forward. The biasing member 25 is formed in a U-shape in a plan view. The biasing member 25 includes a connection portion 25a and a pair of elastic portions 25b.

The connecting portion 25a is attached to the upper end portion of the vertical supply tube portion 20 (the boundary portion with the injection tube portion 22).
The elastic portions 25b extend forward from both left and right ends of the connecting portion 25a. That is, the connecting portion 25a integrally connects the rear ends of the elastic portions 25b to each other. Each elastic portion 25b is disposed on both left and right sides of the vertical supply tube portion 20. In a side view, each elastic portion 25b has an arc shape that protrudes upward. Each elastic portion 25b passes above the cylinder 31 and reaches from the upper end of the vertical supply tube portion 20 to the front of the cylinder 31.

The front end (lower end) of the elastic portion 25b is accommodated in the spring receiving portion 12c in front of the cylinder 31. The elastic portion 25b is connected to the inner surface of the spring receiving portion 12c inside the spring receiving portion 12c. In the illustrated example, the elastic portion 25b is connected to the trigger portion 12 by abutting against the rearward facing surface of the inner surface of the spring receiving portion 12c. The elastic portion 25b is configured to be elastically deformable (flexibly deformable) in a direction perpendicular to the extension direction. In this embodiment, the elastic portion 25b flexibly deforms from the rear end, so that the front end is elastically displaced in the front-rear direction. Therefore, the elastic portion 25b is interposed between the upper end of the vertical supply tube portion 20 and the trigger portion 12, and biases the trigger portion 12 forward.

The nozzle member 11 is attached to the relay member 23 from the front. The nozzle member 11 is formed in a cylindrical shape with a top that opens to the rear. The nozzle member 11 is configured to be rotatable around the axis O2 relative to the relay member 23. In the following description, the direction that intersects with the axis O2 when viewed from the front-to-rear direction may be referred to as the nozzle radial direction. Note that the nozzle member 11 may not be rotatable.

As shown in FIG. 2, the nozzle member 11 includes a top wall portion 11a, an outer cylinder 11b, and an inner cylinder 11c.
The top wall portion 11a is provided in front of the relay member 23 so as to face the relay member 23. The top wall portion 11a is formed with an ejection hole 11d penetrating the top wall portion 11a in the front-rear direction.

The outer cylinder 11b extends in the front-rear direction along the axis O2 from the outer peripheral edge of the top wall portion 11a. A connecting cylinder 23a is fitted into the inner side of the outer cylinder 11b from the rear.
The inner cylinder 11c extends rearward from a portion of the top wall portion 11a located inside the outer cylinder 11b. The inner cylinder 11c is arranged coaxially with the outer cylinder 11b. The guide shaft 23b is fitted into the inner side of the inner cylinder 11c from the rear of the inner cylinder 11c. A second switching groove 11f is formed on the inner peripheral surface of the inner cylinder 11c. The second switching groove 11f is a groove extending in the front-rear direction on the inner peripheral surface of the inner cylinder 11c. A plurality of second switching grooves 11f are provided at intervals around the axis O2. The rear end of the second switching groove 11f is located rearward of the front end of the first switching groove 23c.

The nozzle member 11 and the relay member 23 rotate relative to each other while sliding between the connecting tube 23a and the outer tube 11b, and between the guide shaft 23b and the inner tube 11c, respectively, to switch between communication and blocking of the first switching groove 23c and the second switching groove 11f. Specifically, the nozzle member 11 rotates between a communication position (see FIG. 1) in which the first switching groove 23c and the second switching groove 11f communicate with each other, and a blocking position (see FIG. 2) in which the communication between the first switching groove 23c and the second switching groove 11f is blocked. In the communication position, the first switching groove 23c communicates with the second switching groove 11f through the front end. As a result, the inside of the relay member 23 communicates with the ejection hole 11d through the first switching groove 23c and the second switching groove 11f. Meanwhile, in the blocking position, the first switching groove 23c is blocked by the inner cylinder 11c, blocking communication between the inside of the relay member 23 and the ejection hole 11d.

The cover 14 is provided so as to be slidable in the front-rear direction with respect to the ejector body 10 between a storage position (second position) shown in FIG. 1 and a protruding position (first position) shown in FIG. 2. In the storage position, the cover 14 surrounds the portion of the ejector body 10 located above the mounting cap 21 and the nozzle member 11 from above, rear, and sides. In the protruding position, the cover 14 is located rearward of the storage position. In the protruding position, the cover 14 is located rearward of the nozzle member 11 and surrounds the portion of the ejector body 10 located above the mounting cap 21 from above, rear, and sides. In this embodiment, the cover 14 exposes the ejection hole 11d forward in both the protruding position and the storage position.

The cover 14 is formed in a box shape that opens toward the front and includes a top wall portion 14a, a rear wall portion 14b, a side wall portion 14c, and a bottom wall portion 14d.
The top wall portion 14a extends in the front-rear direction above the ejector body 10. The top wall portion 14a covers the ejector body 10 from above.

The rear wall 14b covers the ejector body 10 from the rear. The rear wall 14b extends downward from the rear edge of the top wall 14a. Specifically, the rear wall 14b includes an upper stage 14f that extends at an incline rearward as it moves downward from the rear edge of the top wall 14a, and a lower stage 14g that is connected to the lower edge of the upper stage 14f and bulges further rearward than the upper stage 14f. In the illustrated example, when the cover 14 is in the stored position, the upper stage 14f is located forward of the rear end of the mounting cap 21, and a part of the lower stage 14g is located rearward of the rear end of the mounting cap 21. On the other hand, when the cover 14 is in the protruding position, the entire rear wall 14b is located rearward of the rear end of the mounting cap 21.

The side wall portions 14c are disposed on both the left and right sides of the ejector body 10. The outer peripheral edges of each side wall portion 14c are connected to the left and right edges of the top wall portion 14a and the rear wall portion 14b, respectively.

The bottom wall portion 14d protrudes in a brim-like shape from the lower edges of the rear wall portion 14b (lower stage portion 14g) and the side wall portion 14c toward the inside of the cover 14. That is, as shown in Figs. 4 and 5, the bottom wall portion 14d is formed in a U-shape in plan view that surrounds the upper end portion of the large diameter portion 20b from the rear and sides. Specifically, the bottom wall portion 14d has a lateral protrusion portion 50 and a rear protrusion portion 51.

The lateral projections 50 project inward in the left-right direction from the lower edge of each side wall portion 14c. The lateral projections 50 extend rearward in the front-rear direction from the middle of the side wall portion 14c. Each lateral projection 50 is divided into a front support portion 50b and a rear support portion 50c, starting from an apex 50a formed in the middle portion in the front-rear direction. The apex 50a is the part of the inner edge (the edge located on the inner side in the left-right direction) of each lateral projection 50 that is located most inward in the left-right direction. The apex 50a is located more inward in the left-right direction than the outermost end of the large diameter portion 20b in the left-right direction.

The front support portion 50b is a portion that is located forward of the apex 50a of each side protrusion 50. The inner edge of the front support portion 50b extends while curving inward in the left-right direction as it approaches the apex 50a.
The rear support portion 50c is a portion located rearward of the apex portion 50a of each side protrusion portion 50. An inner edge of the rear support portion 50c is formed in an arc shape that protrudes outward in the left-right direction.

The rear projection 51 projects forward from the lower edge of the rear wall portion 14b of the cover 14. The rear projection 51 bridges the rear ends of the side projections 50. When the cover 14 is in the storage position, the rear projection 51 is in close proximity to or in contact with the large diameter portion 20b from the rear. The rear projection 51 restricts the forward movement of the cover 14 relative to the ejector body 10 by abutting (engaging) with the large diameter portion 20b from the rear of the large diameter portion 20b.

The cover 14 moves between the stored position and the extended position by the large diameter portion 20b climbing over the top portion 50a in the front-rear direction. Specifically, when the cover 14 is in the stored position, the large diameter portion 20b is held in a portion surrounded by the rear support portion 50c and the rear protruding portion 51. In the stored position, the top portion 50a engages with the outer peripheral surface of the large diameter portion 20b from the front of the large diameter portion 20b.
5, when the cover 14 is in the protruding position, the large diameter portion 20b is disposed inside the front support portion 50b. In the protruding position, the top portion 50a engages with the outer peripheral surface of the large diameter portion 20b from the rear of the large diameter portion 20b.

When the cover 14 is in the protruding position, the rear of the bottom wall 14d protrudes rearward beyond the mounting cap 21. In the illustrated example, when the cover 14 is in the protruding position, the rear of the lateral projection 50 (rear support portion 50c) and the rear projection 51 of the bottom wall 14d protrude rearward beyond the mounting cap 21. The portion of the underside of the bottom wall 14d that protrudes rearward beyond the mounting cap 21 functions as a support portion 55 that supports the trigger-type liquid ejector 1 with the back of the hand during ejection operations, etc.

The storage position of the cover 14 may be located forward of the protruding position. In this case, it is preferable that the greater of the amount by which the cover 14 protrudes forward from the front end of the nozzle member 11 in the storage position and the amount by which the cover 14 protrudes rearward from the rear end of the ejector body 10 (rear end of the mounting cap 21) is smaller than the amount by which the cover 14 protrudes rearward from the rear end of the ejector body 10 (rear end of the mounting cap 21) in the protruding position.

Here, as shown in Figure 3, the trigger-type liquid ejector 1 is provided with a slide mechanism 60 provided between the cover 14 and the ejector body 10, and an opening/closing mechanism 61 provided between the cover 14 and the nozzle member 11.
The slide mechanism 60 allows the cover 14 to slide relative to the ejector body 10 while restricting the movement of the cover 14 in the up-down and left-right directions relative to the ejector body 10. Specifically, the slide mechanism 60 includes an upper rail mechanism 65 and a lower rail mechanism 66.

As shown in FIGS. 3 and 6 , the upper rail mechanism 65 includes an upper rail guide 71 provided on the injection tube portion 22 and an upper rail 72 provided on the cover 14 .
The upper rail guide 71 protrudes upward from the injection tube portion 22 and extends in the front-rear direction. A guide groove 71a that is open outward in the left-right direction is formed in the upper rail guide 71. The guide groove 71a extends linearly in the front-rear direction.

A pair of upper rails 72 are provided on the top wall portion 14a, one on the left and one on the right. Each upper rail 72 protrudes downward from the top wall portion 14a. Each upper rail 72 extends linearly rearward from a portion of the top wall portion 14a that is located rearward from the front end. The upper rails 72 are formed in an L-shape when viewed from the front. At the lower end, the upper rails 72 have an engagement portion 72a that protrudes inward in the left-right direction.

The upper rail 72 is arranged on both sides of the upper rail guide 71 in the left-right direction with the engaging portion 72a accommodated in the guide groove 71a. The upper rail 72 is allowed to move forward and backward in the guide groove 71a with the engaging portion 72a restricted from moving up and down and left and right with respect to the upper rail guide 71. That is, the upper rail mechanism 65 guides the movement of the cover 14 in the forward and backward directions with respect to the ejector body 10 with the movement of the cover 14 in the forward and backward directions with respect to the ejector body 10 restricted. As shown in FIG. 3, a relief portion 25c is formed in the connection portion 25a of the urging member 25 at a portion overlapping the guide groove 71a in a front view. The relief portion 25c is a groove that opens upward at the connection portion 25a and extends in the forward and backward directions. The relief portion 25c allows the upper rail 72 to move forward and backward with the movement of the cover 14 relative to the ejector body 10. This prevents interference between the cover 14 and the biasing member 25.

The lower rail mechanism 66 includes a lower rail guide 81 provided on the vertical supply tube portion 20 and a lower rail 82 provided on the cover 14 .
3 and 7 to 9, the lower rail guide 81 protrudes radially outward in a flange-like shape from the upper end of the large diameter portion 20b (a portion located above the mounting cap 21). The lower rail guide 81 is formed in an arc shape surrounding both left and right sides and the rear of the large diameter portion 20b in a plan view.

The lower rail 82 protrudes inward in the left-right direction from a portion of the side wall portion 14c that is located above the lateral projection portion 50. The lower rail 82 is a protrusion that extends in the front-rear direction on each side wall portion 14c while being spaced apart in the up-down direction from the lateral projection portion 50.
Between the lower rail 82 and the lateral projection 50, a guide groove 82a is formed which is open toward the inside in the left-right direction and extends in the front-rear direction. A lower rail guide 81 is accommodated in the guide groove 82a. Therefore, the lower rail guide 81 engages with the lateral projection 50 and the lower rail 82 in the up-down direction, thereby restricting the up-down movement of the cover 14 relative to the ejector body 10. On the other hand, the lateral projection 50 engages with the large diameter portion 20b in the left-right direction, thereby restricting the left-right movement of the cover 14 relative to the ejector body 10. As a result, in the lower rail mechanism 66, while the up-down and left-right movement of the cover 14 relative to the ejector body 10 is restricted, the lower rail guide 81 moves in the front-rear direction within the guide groove 82a, thereby allowing the cover 14 to move in the front-rear direction relative to the ejector body 10. In the above embodiment, the lower rail mechanism 66 has a configuration in which the lower rail guide 81 moves between the bottom wall portion 14d and the lower rail 82. However, the present invention is not limited to this configuration. A pair of lower rails that accommodate the lower rail guide 81 may be provided above the bottom wall portion 14d.

As shown in Figures 3 and 8, a stopper 84 is formed at the front end of the lateral projection 50. The stopper 84 protrudes upward from each lateral projection 50. When viewed from the side, the stopper 84 is formed in a trapezoidal (or triangular) shape with a rear end surface that is a flat surface extending in the vertical direction. When the cover 14 is in the protruding position, the stopper 84 approaches or abuts against the front edge of the lower rail guide 81 from the front. The stopper 84 abuts (engages) against the lower rail guide 81 from the front, thereby restricting the rearward movement of the cover 14 relative to the ejector body 10.

The front end of the lower rail 82 is located forward of the bottom wall 14d. When the cover 14 is in the storage position, the front end of the lower rail 82 engages with the recess 43a from behind and below. Therefore, when the cover 14 is in the storage position, the front end of the lower rail 82 constitutes a restricting portion 82b that restricts the rearward movement of the trigger portion 12 by the trigger portion 12 hitting the front end of the lower rail 82 from the front diagonally upward through the inner surface of the recess 43a. In a side view, a virtual line L2 (a line of action from the trigger portion 12 to the restricting portion 82b when the trigger portion 12 is moved rearward) that passes through the contact point between the inner surface of the recess 43a and the restricting portion 82b and extends in the tangent direction of the movement trajectory L1 of the trigger portion 12 is inclined with respect to the front-rear direction (the movement direction of the cover 14). In this embodiment, the angle θ that the virtual line L2 makes with the front-rear direction is preferably set to 15° or more and 40° or less, and is set to about 22° in the illustrated example.

3, 10 and 11, the opening/closing mechanism 61 moves the nozzle member 11 between a communicating position and a blocking position in accordance with the movement of the cover 14 between the protruding position and the retracted position. The opening/closing mechanism 61 includes a first blade portion 91 and a second blade portion 92 provided on the nozzle member 11, and a first linking portion 93 and a second linking portion 94 provided on the cover 14.
The first blade portion 91 and the second blade portion 92 are protrusions that protrude in the nozzle radial direction from the outer circumferential surface of the nozzle member 11 (outer cylinder 11b) and extend in the front-rear direction. The first blade portion 91 and the second blade portion 92 are disposed opposite each other in the left-right direction when the nozzle member 11 is in the blocking position. Specifically, the first blade portion 91 extends in the front-rear direction while inclining toward one side about the axis O2 as it moves toward the rear. The first blade portion 91 extends in the left-right direction (nozzle radial direction) while inclining upward as it moves toward the outside in the nozzle radial direction.
The second blade portion 92 extends in the front-rear direction while being inclined toward one side about the axis O2 as it moves rearward. The second blade portion 92 extends in the left-right direction (nozzle radial direction) while being inclined downward as it moves outward in the nozzle radial direction.

As shown in FIG. 10, when the nozzle member 11 is in the blocking position, the outer edge of the first blade portion 91 and the outer edge of the second blade portion 92 are located on the same line (at the same height) in the nozzle radial direction at the front ends of the first blade portion 91 and the second blade portion 92. On the other hand, as shown in FIG. 11, when the nozzle member 11 is in the communicating position, the outer edge of the first blade portion 91 and the outer edge of the second blade portion 92 are located on the same line (at the same height) in the nozzle radial direction at the rear ends of the first blade portion 91 and the second blade portion 92.

The first linking portion 93 protrudes inward in the left-right direction from the front end of one of the side walls 14c. The first linking portion 93 is located above the first blade portion 91. The first linking portion 93 slides on the upper surface (the surface facing one side about the axis O2) of the first blade portion 91 as the cover 14 moves from the stored position to the protruding position. As a result, the nozzle member 11 moves from the blocking position to the communicating position by rotating toward the other side about the axis O2 as the cover 14 moves from the stored position to the protruding position.
The second linking portion 94 protrudes inward in the left-right direction from the same height as the first linking portion 93 at the front end of the other side wall portion 14c. The second linking portion 94 is located above the second blade portion 92. The second linking portion 94 slides on the upper surface (the surface facing the other side about the axis O2) of the second blade portion 92 as the cover 14 moves from the protruding position to the storage position. As a result, the nozzle member 11 rotates toward one side about the axis O2 as the cover 14 moves from the protruding position to the storage position, thereby transitioning from the communication position to the blocking position.

Next, a case where the trigger-type liquid ejector 1 configured as described above is used will be described. In the following description, the state shown in FIG. 1 (where the cover 14 is in the retracted position and the nozzle member 11 is in the blocking position) is taken as the initial state, and each part of the trigger-type liquid ejector 1 is assumed to be filled with liquid.

When using the trigger-type liquid ejector 1, the cover 14 is first moved from the stored position to the protruding position. Specifically, the cover 14 and the ejector body 10 (mounting cap 21, etc.) or the container body A are separately grasped, and the cover 14 is pulled backward relative to the ejector body 10. Then, as shown in Figures 4 and 5, the cover 14 moves backward relative to the ejector body 10 while being guided by the slide mechanism 60. As the cover 14 moves backward, the large diameter portion 20b slides on the inner edge of the side protruding portion 50 (rear support portion 50c). At this time, the large diameter portion 20b slides forward on the inner edge of the rear support portion 50c, and the side wall portion 14c is pushed open via the rear support portion 50c. As a result, the large diameter portion 20b climbs over the top portion 50a and enters the front support portion 50b. Then, the side wall portion 14c is restored to its original shape, so that the large diameter portion 20b is held within the front support portion 50b. As a result, the cover 14 moves from the stored position to the protruding position.

As shown in FIG. 2, when the cover 14 moves to the protruding position, the cover 14 protrudes rearward relative to the mounting cap 21. This causes the support portion 55 to be exposed downward behind the mounting cap 21. Note that, as shown in FIG. 9, in the protruding position, the stopper 84 engages with the lower rail guide 81 from the front, thereby restricting the rearward movement of the cover 14 relative to the ejector body 10.

As shown in Figures 10 and 11, when the cover 14 moves from the stored position to the protruding position, the first linking portion 93 slides on the upper surface of the first blade portion 91. As a result, as the cover 14 moves rearward, the nozzle member 11 is pushed toward the other side around the axis O2 via the first linking portion 93 and the first blade portion 91, causing the nozzle member 11 to rotate. As the nozzle member 11 rotates, the first switching groove 23c and the second switching groove 11f communicate with each other, and the nozzle member 11 reaches the communicating position. Note that as the cover 14 moves to the protruding position, the entire nozzle member 11 is exposed to the outside in front of the cover 14.

As shown in FIG. 9, when the cover 14 is in the process of moving to the protruding position, the restricting portion 82b retreats rearward from the trigger portion 12, causing the restricting portion 82b to retreat rearward from the movement trajectory L1. This allows the trigger portion 12 to be pulled rearward, enabling the liquid to be ejected.

As shown in FIG. 2, when performing the liquid ejection operation, the index finger or the like is hooked on the trigger portion 12 and the hand is placed around the attachment cap 21. In this state, the part of the back of the hand located between the thumb and index finger approaches or abuts the support portion 55 from below. When the trigger portion 12 is pulled backward, the trigger portion 12 rotates around the support piece 12b as a fulcrum, and the trigger portion 12 moves backward. Then, the elastic portion 25b is pushed backward via the spring receiving portion 12c, and the elastic portion 25b is flexed and deformed. As a result, the elastic portion 25b is elastically displaced backward as the trigger portion 12 moves backward. As a result, a biasing force is applied to the trigger portion 12 in the forward direction.

When the trigger portion 12 moves rearward, the piston 32 moves rearward relative to the cylinder 31. Then, the inside of the cylinder 31 is pressurized, and the liquid in the cylinder 31 is supplied into the vertical supply tube portion 20 (small diameter portion 20a). The liquid supplied into the vertical supply tube portion 20 reaches the relay member 23 through the injection tube portion 22. The liquid that reaches the relay member 23 flows into the nozzle member 11 through the first switching groove 23c and the second switching groove 11f, and is then ejected through the ejection hole 11d.

When the pulling operation of the trigger portion 12 is released, the trigger portion 12 moves forward due to the restoring force of the elastic portion 25b. Accordingly, the piston 32 moves forward relative to the cylinder 31. This reduces the pressure inside the piston 32. This causes the liquid in the container body A to be sucked up into the vertical supply tube portion 20. The liquid sucked up into the vertical supply tube portion 20 can be introduced into the cylinder 31 in preparation for the next ejection operation.

As shown in Figures 1 and 2, in order to return the cover 14 to the storage position after the ejection operation is completed, the cover 14 is pushed forward relative to the ejector body 10. Then, the cover 14 moves forward relative to the ejector body 10 while being guided by the slide mechanism 60. As shown in Figures 4 and 5, as the cover 14 moves forward, the large diameter portion 20b slides on the inner edge of the lateral projection 50 (front support portion 50b). At this time, the large diameter portion 20b slides rearward on the inner edge of the front support portion 50b, and the side wall portion 14c is pushed open via the front support portion 50b. As a result, the large diameter portion 20b overcomes the top portion 50a and enters the rear support portion 50c. Then, the side wall portion 14c is restored and deformed, so that the large diameter portion 20b is held in the rear support portion 50c. As a result, the cover 14 moves from the protruding position to the storage position. When the cover 14 moves to the storage position, the amount that the cover 14 protrudes rearward from the mounting cap 21 becomes smaller.

As shown in Figures 10 and 11, when the cover 14 moves from the protruding position to the retracted position, the second linking portion 94 slides on the upper surface of the second blade portion 92. As the cover 14 moves forward, the nozzle member 11 is pushed toward one side about the axis O2 via the second linking portion 94 and the second blade portion 92, causing the nozzle member 11 to rotate. As the nozzle member 11 rotates, the communication between the first switching groove 23c and the second switching groove 11f is blocked, and the nozzle member 11 reaches the blocking position. When the cover 14 moves to the retracted position, the periphery (top and sides) of the nozzle member 11 is covered by the cover 14.

As shown in FIG. 8, when the cover 14 moves to the storage position, the restricting portion 82b moves backward along the movement path L1. That is, when the restricting portion 82b moves into the recess 43a of the trigger portion 12, the restricting portion 82b engages with the trigger portion 12 from a downward, rearward angle. This restricts the rearward pulling operation of the trigger portion 12, and also restricts the forward movement of the cover 14 relative to the ejector body 10.

In this manner, in this embodiment, the cover 14 is configured to move relative to the ejector body 10 between a protruding position in which the support portion 55 protrudes rearward from the ejector body 10 and a stored position in which the support portion 55 is located forward from the protruding position.
According to this configuration, by moving the cover 14 to the protruding position during the ejection operation, the ejection operation can be performed with the trigger type liquid ejector 1 supported on the back of the hand via the support part 55. This allows the trigger type liquid ejector 1 to be stably held, improving operability.
On the other hand, by moving the cover 14 to the storage position during distribution or when not in use, the amount of rearward protrusion of the cover 14 from the ejector body 10 can be reduced. Therefore, a small-sized trigger-type liquid ejector 1 with excellent space efficiency can be provided.

In this embodiment, the slide mechanism 60 is configured to guide the cover 14 so as to be movable in the front-rear direction while restricting the movement of the cover 14 in the up-down and left-right directions relative to the ejector body 10 .
According to this configuration, the cover 14 can be stably moved between the protruding position and the retracted position, thereby providing a trigger-type liquid ejector 1 with excellent operability.

In this embodiment, the restricting portion 82b is configured to move forward and backward with respect to the movement trajectory L1 of the trigger portion 12 as the cover 14 moves between the protruding position and the retracted position.
According to this configuration, when the cover 14 is in the stored position, the restricting portion 82b enters the movement trajectory L1 and engages with the trigger portion 12 from the rear of the trigger portion 12, restricting the rearward movement of the trigger portion 12. This makes it possible to prevent the trigger portion 12 from being unexpectedly operated and causing liquid to be sprayed when the cover 14 is in the stored position.
On the other hand, when the cover 14 is in the protruding position, the restricting portion 82b retreats from the movement trajectory L1, thereby permitting the rearward movement of the trigger portion 12. This makes it unnecessary to perform any operation other than the operation of the cover 14 in order to transition the trigger-type liquid ejector 1 to a state in which ejection is possible.
As a result, it is possible to prevent unexpected liquid from spraying out when the cover 14 is in the retracted position while maintaining operability.

In this embodiment, the trigger portion 12 is configured to include a trigger body 12a that extends in the vertical direction and can be grasped and operated, and a spring receiving portion 12c that protrudes in the horizontal direction from the trigger body 12a and engages with the regulating portion 82b from the front of the regulating portion 82b when the cover 14 is in the stored position.
According to this configuration, the restricting portion 82b engages at a location (spring receiving portion 12c) other than the trigger body 12a, so that an engagement portion with the restricting portion 82b can be provided without changing the shape of the trigger body 12a itself. This ensures the engagement strength between the trigger portion 12 and the restricting portion 82b when the cover 14 is in the stored position. On the other hand, it is possible to suppress a decrease in the rigidity of the trigger body 12a itself due to the addition of an engagement portion with the restricting portion 82b, and it is possible to effectively operate the pump portion 24 according to the amount of movement of the trigger portion 12 during the ejection operation.

In this embodiment, when the cover 14 is in the storage position, the trigger portion 12 is configured to engage with the restricting portion 82b in a direction intersecting the moving direction of the cover 14 when viewed from the left-right direction.
According to this configuration, during the ejection operation, a load acts on the restricting portion 82b in a direction intersecting the front-rear direction (the movement direction of the cover 14) via the engagement portion between the trigger portion 12 and the restricting portion 82b. This makes it possible to reduce the component of the load acting between the trigger portion 12 and the restricting portion 82b during the ejection operation in the movement direction of the cover 14 (front-rear direction) compared to a case in which the movement direction of the trigger portion 12 and the movement direction of the cover 14 are the same. This makes it possible to prevent the cover 14 from moving unexpectedly to the protruding position due to the operation of the trigger portion 12 when the cover 14 is in the stored position.

In this embodiment, an opening/closing mechanism 61 is provided between the nozzle member 11 and the cover 14, which moves the nozzle member 11 from a blocking position to a communicating position as the cover 14 moves from the stored position to the protruding position.
According to this configuration, by keeping the nozzle member 11 in the blocking position, it is possible to prevent unexpected ejection of liquid. Also, by moving the nozzle member 11 from the blocking position to the communicating position in conjunction with the movement of the cover 14 from the retracted position to the protruding position, it is not necessary to operate the cover 14 and the nozzle member 11 separately. Therefore, it is possible to prevent unexpected ejection of liquid when the cover 14 is in the retracted position while maintaining operability.

Second Embodiment
In the trigger type liquid ejector 1 shown in Figures 12 and 13, the outer cylinder 11b of the nozzle member 11 is formed in a square cylinder shape (rectangular cylinder) centered on the axis O2. That is, the outer shape of the outer cylinder 11b is formed by a plurality of flat portions 100a arranged around the axis O2 and corner portions 100b connecting adjacent flat portions 100a. When the cover 14 is in the storage position, the nozzle member 11 is disposed inside the cover 14 with the pair of flat portions 100a facing each other in the left-right direction. At this time, the pair of flat portions 100a are close to the inner surface of the side wall portion 14c in the left-right direction.

In the outer tube 11b, the distance between the flat portions 100a facing each other in the nozzle radial direction is shorter than the distance between the inner surfaces of the side wall portions 14c of the cover 14. On the other hand, in the outer tube 11b, the distance between the corner portions 100b facing each other in the nozzle radial direction is shorter than the distance between the inner surfaces of the side wall portions 14c of the cover 14. Therefore, when the cover 14 is in the storage position, the corner portions 100b interfere with the inner surfaces of the side wall portions 14c, restricting the rotation of the nozzle member 11 around the axis O2. In other words, when the cover 14 is in the storage position, the transition of the nozzle member 11 between the communication position and the blocking position is restricted.

The cover 14 is equipped with an opening/closing member 110 that opens and closes the ejection hole 11d as it moves between the stored position and the protruding position. The opening/closing member 110 is integrally connected to the front edge of the top wall portion 14a via a hinge portion 111. The hinge portion 111 is formed integrally with the top wall portion 14a and the opening/closing member 110, and is a portion that is formed thinner than the top wall portion 14a and the opening/closing member 110, and is configured to be elastically deformable. As a result, the opening/closing member 110 is configured to be rotatable around an axis that runs along the left-right direction, starting from the hinge portion 111.

The opening/closing member 110 moves between the closed position and the open position as the cover 14 moves between the stored position and the protruding position. Specifically, the opening/closing member 110 is held in the closed position when the cover 14 is in the stored position. In the closed position, the opening/closing member 110 hangs down from the front edge of the top wall portion 14a. In the closed position, the opening/closing member 110 covers the nozzle member 11 from the front of the nozzle member 11 and closes the ejection hole 11d.
On the other hand, the opening/closing member 110 is held in the open position when the cover 14 is in the protruding position. In the open position, the opening/closing member 110 is disposed in a state of lying above the relay member 23 in the front-rear direction.

In this embodiment, by moving the cover 14 from the stored position to the protruding position, the cover 14 retracts relative to the nozzle member 11. Then, the nozzle member 11 abuts against the opening/closing member 110, and as the cover 14 moves rearward, the front end of the nozzle member 11 slides on the back surface of the opening/closing member 110. This causes the opening/closing member 110 to be pushed up around the hinge portion 111 by the nozzle member 11. As a result, as the cover 14 moves to the protruding position, the opening/closing member 110 moves from the closed position to the open position.
On the other hand, when the cover 14 is moved from the protruding position to the retracted position, the opening/closing member 110 moves forward as the cover 14 moves forward. When the opening/closing member 110 protrudes forward beyond the nozzle member 11, the opening/closing member 110 hangs down around the hinge portion 111 due to its own weight and the restoring force of the hinge portion 111. As a result, as the cover 14 moves to the retracted position, the opening/closing member 110 moves from the open position to the closed position.

This embodiment also provides the same effects as the first embodiment described above.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the scope of the attached claims.
In the above embodiment, the trigger portion 12 is configured to be rotatable, but the present invention is not limited to this configuration. The trigger portion 12 may be configured to be slidable as long as it is configured to be movable in the front-rear direction.
In the above-described embodiment, the trigger type liquid jetter 1 is described as having a configuration including a slide mechanism 60 and an opening/closing mechanism 61, but is not limited to this configuration. The trigger type liquid jetter 1 only needs to have at least the slide mechanism 60. The slide mechanism 60 and the opening/closing mechanism 61 may be configured to operate independently. Furthermore, the opening/closing mechanism 61 may be configured such that only one of the movements of the nozzle member 11 from the communicating position to the blocking position and the movement from the blocking position to the communicating position is linked to the cover 14.

In the above embodiment, the cover 14 moves linearly in the front-rear direction, but the present invention is not limited to this configuration. The cover 14 may move in an oblique direction intersecting the front-rear direction as long as the cover 14 has at least a movement component in the front-rear direction.
In the above embodiment, the support portion 55 is formed on a flat surface, but the present invention is not limited to this configuration. The support portion may be formed on a curved surface or the like.
In the above embodiment, the configuration in which the cover 14 covers the nozzle member 11 in the storage position has been described, but the present invention is not limited to this configuration. It is sufficient that the cover 14 covers at least a part of the ejector body 10 in the storage position.
In the above embodiment, the cover (one member) 14 is provided with a rail, and the ejector body (the other member) 10 is provided with a rail guide, but the present invention is not limited to this configuration. The ejector body (one member) 10 may be provided with a rail, and the cover (the other member) 14 may be provided with a rail guide.

In the above embodiment, the configuration has been described in which the trigger portion 12 and the restricting portion 82b engage with each other in a direction intersecting the moving direction of the cover 14, but the present invention is not limited to this configuration. The direction of engagement between the trigger portion 12 and the restricting portion 82b may coincide with the moving direction of the cover 14. Also, the restricting portion 82b may not be provided.
In the above embodiment, the restricting portion 82b is engaged with the spring receiving portion 12c, but the present invention is not limited to this configuration. The restricting portion 82b may be engaged with the trigger body 12a itself.

In the above embodiment, the slide mechanism 60 includes the upper rail mechanism 65 and the lower rail mechanism 66, but is not limited to this configuration. The slide mechanism 60 may include at least one rail and one rail guide.
In the above embodiment, the nozzle member 11 is switched between the communicating position and the blocking position by rotating, but the nozzle member 11 may be switched between the communicating position and the blocking position by moving back and forth, for example.
In the above embodiment, the opening/closing mechanism 61 is configured such that the blade portions 91, 92 are provided on the nozzle member 11 and the linking portions 93, 94 are provided on the cover 14, but is not limited to this configuration. The opening/closing mechanism may be configured such that the blade portions are provided on the cover 14 and the linking portions are provided on the nozzle member 11.
In the above embodiment, the configuration in which the entire cover 14 slides in the front-rear direction has been described, but the present invention is not limited to this configuration. Only a part of the cover 14 may move in the front-rear direction to function as a support portion that transitions between the protruding position and the retracted position.

In addition, the components in the above-described embodiments may be replaced with well-known components as appropriate without departing from the spirit of the present invention, and the above-described modifications may be combined as appropriate.

1: Trigger-type liquid ejector 10: Ejector body (the other member, the one member)
11: Nozzle member 11d: Spout hole 12: Trigger portion 12a: Trigger body 12c: Spring receiving portion (engagement portion)
14: Cover (one member, the other member)
24: pump section 55: support section 61: opening/closing mechanism 72a: engagement section 82b: regulation section A: container body

Claims (4)

A jet body having a pump portion for pumping out the liquid contained in the container body;
a nozzle member attached to a front end of the ejector body and having an ejection hole formed therein for ejecting the liquid delivered by the pump portion forward;
a trigger portion that is arranged to be movable rearward in a forward biased state and drives the pump portion;
A cover that covers the ejector body and has a support portion at a rear end thereof that faces downward,
The support portion is configured to be movable in a front-rear direction relative to the ejector body between a first position protruding rearward from the ejector body and a second position located forward from the first position ,
One of the cover and the ejector main body is provided with a rail extending in a front-rear direction and supported by a rail guide provided on the other member so as to be movable in the front-rear direction;
the rail and the rail guide guide the cover in a front-rear direction between the first position and the second position while restricting movement of the cover relative to the ejector main body in a direction intersecting the front-rear direction,
the cover includes a restriction portion that moves toward and away from the trigger portion as the cover moves between the first position and the second position,
The regulating portion is
When the cover is in the second position, the cover engages with the trigger portion from behind the trigger portion to restrict rearward movement of the trigger portion,
A trigger-type liquid ejector that allows the trigger portion to move backward when the cover is in the first position . The trigger portion is
A trigger body that extends in the vertical direction and can be gripped and operated;
2. The trigger-type liquid ejector according to claim 1 , further comprising an engagement portion that protrudes in the left-right direction from the trigger body and engages with the restriction portion from the front when the cover is in the second position. 3. The trigger-type liquid ejector according to claim 1 , wherein when the cover is in the second position, the trigger portion engages with the restricting portion in a direction intersecting the moving direction of the cover as viewed from the left- right direction. A jet body having a pump portion for pumping out the liquid contained in the container body;
a nozzle member attached to a front end of the ejector body and having an ejection hole formed therein for ejecting the liquid delivered by the pump portion forward;
a trigger portion that is arranged to be movable rearward in a forward biased state and drives the pump portion;
A cover that covers the ejector body and has a support portion at a rear end thereof that faces downward,
The support portion is configured to be movable in a front-rear direction relative to the ejector body between a first position protruding rearward from the ejector body and a second position located forward from the first position,
One of the cover and the ejector main body is provided with a rail extending in a front-rear direction and supported by a rail guide provided on the other member so as to be movable in the front-rear direction;
the rail and the rail guide guide the cover in a front-rear direction between the first position and the second position while restricting movement of the cover relative to the ejector main body in a direction intersecting the front-rear direction,
the nozzle member is attached to the ejector body so as to be movable between a communication position where the inside of the ejector body communicates with the ejection holes and a blocking position where the communication between the inside of the ejector body and the ejection holes is blocked,
A trigger-type liquid ejector having an opening/closing mechanism between the nozzle member and the cover, which moves the nozzle member from the blocking position to the communicating position as the cover moves from the second position to the first position.

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