CN219216023U - Emulsion pump with safety lock structure - Google Patents

Abstract

The utility model discloses an emulsion pump with a safety lock structure, which comprises a pump assembly, a pressing head and a mounting cover for being screwed on a bottle opening, wherein the pump assembly comprises a piston rod, the pressing head is mounted at the upper end of the piston rod, the mounting cover is sleeved on the outer side of the piston rod, the mounting cover is provided with a pipe shell part, a vertical sliding groove is formed on the outer wall of the pipe shell part, a ring lock groove is formed at the upper end of the pipe shell part, the upper end of the vertical sliding groove is communicated with the ring lock groove, a lock sleeve is arranged on the pipe shell part in a matched manner, the lock sleeve comprises a sleeve, a sliding block is formed on the inner wall of the lower end of the sleeve shell part and is slidably arranged in the vertical sliding groove, the sliding block can slide into the ring lock groove from the vertical sliding groove, an outer shell is formed at the lower part of the pressing head, and the upper end of the lock sleeve is correspondingly arranged below the outer shell. The emulsion pump provided by the utility model has good use safety, and is convenient to lock and unlock.

Description

Emulsion pump with safety lock structure

Technical Field

The utility model relates to the field of emulsion pumps, in particular to an emulsion pump with a safety lock structure.

Background

At present, washing articles such as liquid laundry detergent, shampoo and bath cream are all provided with a plastic bottle body, the bottle body is provided with an emulsion pump, the emulsion pump is provided with a suction pipe and a pressing head, the suction pipe is used for being inserted into the bottle body, the pressing head is arranged on the upper side of the bottle body, when the pressing head is repeatedly pressed downwards by hands, the suction pipe can absorb emulsion in the bottle body, and the emulsion is sprayed out from a liquid outlet of the pressing head. Some families have infants, the infants have curiosities on things, the operation of imitating an adult to press a pressing head is unavoidable, if the infants are cared carelessly, the infants may even swallow the emulsion, the body of the infants is damaged, the use safety of the emulsion pump in the prior art is insufficient, and the improvement is needed.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides an emulsion pump with a safety lock structure, which has good use safety.

The aim of the utility model is achieved by the following technical scheme.

The utility model discloses an emulsion pump with a safety lock structure, which comprises a pump assembly, a pressing head and a mounting cover, wherein the mounting cover is used for being screwed on a bottle opening, the pump assembly comprises a piston rod, the pressing head is mounted at the upper end of the piston rod, the mounting cover is sleeved on the outer side of the piston rod, a tube shell part is formed on the mounting cover, a vertical sliding groove is formed on the outer wall of the tube shell part, a ring lock groove is formed at the upper end of the tube shell part, the upper end of the vertical sliding groove is communicated with the ring lock groove, a lock sleeve is arranged on the tube shell part in a matched mode, the lock sleeve comprises a sleeve shell part, a sliding block is formed on the inner wall of the lower end of the sleeve shell part, the sliding block is slidably arranged in the vertical sliding groove, the sliding block can slide into the ring lock groove from the vertical sliding groove, an outer sleeve is formed at the lower part of the pressing head, and the upper end of the lock sleeve is correspondingly arranged below the outer sleeve.

Preferably, a marking lug is formed on the outer wall of the lower part of the lock sleeve, and the position of the marking lug corresponds to the sliding block.

Preferably, the wall surface of the ring lock groove is provided with concave clamping positions, the concave clamping positions are distributed on two sides of the vertical sliding groove, the lower end of the sliding block is provided with convex clamping positions, and the convex clamping positions can be moved into the concave clamping positions.

Preferably, an inner flange is formed at an upper end of the lock sleeve, the inner flange is provided at a corresponding upper side of an upper end of the mounting cover, and the inner flange can be in contact connection with the upper end of the mounting cover.

Preferably, the outer wall of the shell part is provided with anti-slip grooves extending in the up-down direction.

Preferably, the vertical chute is provided to penetrate the mounting cover upward.

Compared with the prior art, the utility model has the beneficial effects that: the pipe shell part is formed by arranging the mounting cover, the vertical sliding groove is formed on the outer wall of the pipe shell part, the annular lock groove is formed at the upper end of the pipe shell part, the upper end of the vertical sliding groove is communicated with the annular lock groove, the pipe shell part is matched with the lock sleeve, the sliding block is formed on the inner wall of the lower end of the lock sleeve and is arranged in the vertical sliding groove in a sliding manner, the sliding block can slide into the annular lock groove from the vertical sliding groove, the outer sleeve shell is formed at the lower part of the pressing head, and the upper end of the lock sleeve is correspondingly arranged below the outer sleeve shell, so that the pressing head can be blocked from moving downwards when the lock sleeve is in a locking state.

Drawings

Fig. 1 is a schematic perspective view of an emulsion pump of the present utility model in an inactive state.

Fig. 2 is a schematic cross-sectional view of the emulsion pump of the present utility model in an inactive state.

Fig. 3 is a schematic perspective view of the emulsion pump of the present utility model in a ready-to-operate state.

Fig. 4 is a schematic view of a partial structure at a in fig. 3.

Fig. 5 is a schematic cross-sectional view of the emulsion pump of the present utility model in a ready-to-operate state.

Fig. 6 is a schematic perspective view of the emulsion pump of the present utility model in a locked state.

Fig. 7 is a schematic view of a partial structure at B of fig. 6.

Fig. 8 is a schematic cross-sectional view of the emulsion pump of the present utility model in a locked state.

Fig. 9 is a schematic view of a partial structure at C of fig. 8.

Fig. 10 is a schematic perspective view of a lock sleeve according to the present utility model.

Fig. 11 is a schematic perspective view of a mounting cover according to a first embodiment of the present utility model.

Fig. 12 is a schematic perspective view of a mounting cover according to a second embodiment of the present utility model.

Description of the reference numerals: a mounting cover 1; a tube-shell portion 11; a vertical chute 111; a ring lock groove 112; the clamping concave position 1121; a lock sleeve 2; a shell portion 21; a slider 211; a card protrusion 2111; anti-skid flutes 212; an inner flange 213; marking the bump 214; a pressing head 3; an outer jacket 31; a middle case 32; a liquid outlet 301; a piston rod 4; an inner pipe 401; a piston 5; a check valve ball 6; a spring 7; a pump housing 8; a pump chamber 801; a locking cover 9.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The emulsion pump with a safety lock structure of the present utility model, as shown in fig. 1 to 8, comprises a pump assembly, a pressing head 3 and a mounting cap 1 for screwing on a bottle mouth, in other words, the mounting cap 1 is formed with an internal thread, the pump assembly comprises a piston rod 4, the pressing head 3 is mounted on the upper end of the piston rod 4, the center part of the lower part of the pressing head 3 is sleeved outside the upper end part of the piston rod 4, and the outer wall of the upper end part of the piston rod 4 is formed with a convex ring adapted to the inner wall of the lower part of the pressing head 3, so that the piston rod 4 and the pressing head 3 are positioned relatively in the axial direction of the piston rod 4, the mounting cap 1 is sleeved outside the piston rod 4, more specifically, the mounting cap 1 and the piston rod 4 are coaxially arranged. As shown in fig. 11, the mounting cap 1 is formed with a tube housing part 11, a vertical sliding groove 111 is formed on an outer wall of the tube housing part 11, in other words, the vertical sliding groove 111 is parallel to an axis of the mounting cap 1, a ring lock groove 112 is formed at an upper end of the tube housing part 11, an upper end of the vertical sliding groove 111 is arranged in communication with the ring lock groove 112, that is, the vertical sliding groove 111 is perpendicular to the ring lock groove 112, as shown in fig. 3 to 5, the tube housing part 11 is adapted to be provided with a lock sleeve 2, the lock sleeve 2 comprises a sleeve part 21, as shown in fig. 10, a sliding block 211 is formed on an inner wall of a lower end of the sleeve part 21, as shown in fig. 4 and 5, the sliding block 211 is slidably arranged in the vertical sliding groove 111, as shown in fig. 6 to 9, and the sliding block 211 can slide into the ring lock groove 112 from the vertical sliding groove 111; as shown in fig. 2, an outer sleeve 31 is formed at the lower part of the pressing head 3, the outer sleeve 31 is arranged coaxially with the piston rod 4, and the upper end of the lock sleeve 2 is correspondingly arranged below the outer sleeve 31.

The working principle of the safety lock structure of the emulsion pump of the present utility model is described below: as shown in fig. 1 and 2, during transportation and sales, the middle sleeve 32 of the pressing head 3 is screwed and fixed with the locking cap 9, the middle sleeve 32 is coaxially arranged on the inner side of the outer sleeve 31, so that the pressing head 3 cannot move up and down to avoid pumping out emulsion in the bottle, wherein the mounting cap 1 is screwed with the bottle mouth, and the flange part at the lower end of the locking cap 9 is clamped on the upper end surface of the bottle mouth by the inner convex edge at the upper end of the mounting cap 1, so that the locking cap 9 is fixed with the bottle mouth; the slider 211 of the lock sleeve 2 is located in the lower end of the vertical chute 111. When a user unseals an emulsion product (namely, products such as shower gel or shampoo) for use, the pressing head 3 is rotated to separate the middle sleeve shell 32 from the lock cover 9, as shown in fig. 3 to 5, so that the elastic force of the spring 7 pushes the piston rod 4 to move upwards to a limit position, and in this state, the lock sleeve 2 is kept at a lower position under the action of gravity, namely, the sliding block 211 of the lock sleeve 2 is still positioned in the lower end part of the vertical sliding groove 111; the user presses down the pressing head 3, then releases the pressing head 3, and the spring 7 pushes up and resets the piston rod 4 and the pressing head 3, so that the emulsion can be ejected through repeated operation of the pressing head 3, and the liquid outlet 301. When the user finishes using the emulsion product, as shown in fig. 6 to 8, the user can slide the lock sleeve 2 upward, the sliding block 211 of the lock sleeve 2 moves upward to the position of the ring lock groove 112 along the vertical sliding groove 111, then the user rotates the lock sleeve 2 to slide the sliding block 211 into the ring lock groove 112, then the user releases the lock sleeve 2, and the lock sleeve 2 is prevented from sliding downward because the ring lock groove 112 blocks the sliding block 211, in this state, the upper end of the lock sleeve 2 is abutted against the lower end face of the outer casing 31 of the pressing head 3, that is, the upper end of the lock sleeve 2 blocks the pressing head 3 from moving downward, so the pressing head 3 cannot be pressed down, and the emulsion pump is switched to the locked state, so that the emulsion cannot be discharged from the liquid outlet 301. If the infant takes the emulsion product in the locked state for playing, the infant does not understand the emulsion pump to unlock, so that the emulsion cannot be discharged, the emulsion is prevented from getting on the infant's body or clothes, and the infant is prevented from taking the emulsion by mistake, so that the emulsion pump provided by the utility model is good in use safety. When an adult user needs to use the emulsion product, the user rotates the lock sleeve 2, so that the sliding block 211 moves back to the connection position of the vertical sliding groove 111 and the ring lock groove 112, and then the user pushes down the lock sleeve 2, so that the sliding block 211 moves down along the vertical sliding groove 111, and the lock sleeve 2 moves down to leave the active space for normal operation of the pressing head 3. By arranging the safety lock structure, the condition that a user needs to screw the pressing head 3 with the lock cover 9 to lock the pressing head 3 is avoided, and emulsion is sprayed once because the pressing head 3 needs to be pressed down to screw the pressing head with the lock cover 9 is avoided, so that the emulsion pump is convenient to lock and unlock, but can also avoid the false use of infants.

Further, as shown in fig. 1, 4 and 7, a marking protrusion 214 is formed on the outer wall of the lower portion of the lock sleeve 2, the position of the marking protrusion 214 corresponds to the sliding block 211, so that when a user needs to unlock the emulsion pump, the user can observe the position of the marking protrusion 214, rotate the marking protrusion 214 to align the vertical sliding groove 111, rotate the sliding block 111 to the connection position of the vertical sliding groove 111 and the ring locking groove 112, and then push the lock sleeve 2 downwards, so that the sliding block 111 moves downwards along the vertical sliding groove 111, thereby facilitating the unlocking of the emulsion pump by the user. The marking protrusions 214 may be provided in a triangle shape with a tip downward.

Further, as shown in fig. 11, the wall surface of the ring lock groove 112 is formed with a concave clamping portion 1121, the concave clamping portions 1121 are distributed on two sides of the vertical chute 111, that is, two concave clamping portions 1121 are provided, as shown in fig. 10, the lower end of the sliding block 211 is formed with a convex clamping portion 2111, as shown in fig. 7, the convex clamping portion 2111 can move into the concave clamping portion 1121; in the locking process, after the sliding block 111 enters the ring lock groove 112 from the vertical sliding groove 111, the user continuously rotates the lock sleeve 2, the clamping protrusion 2111 moves into one of the clamping concave portions 1121, and as the clamping protrusion 2111 and the edge of the clamping concave portion 1121 generate an interaction blocking effect, when the emulsion pump needs to be unlocked, the locking sleeve 2 needs to be slightly rotated with force, so that the clamping protrusion 2111 forces the upper end of the pipe shell 11 and the lower end of the sleeve shell 21 to slightly elastically deform, the clamping protrusion 2111 slides away from the clamping concave portion 1121, and then the sliding block 211 slides back to the connecting position of the vertical sliding groove 111 and the ring lock groove 112, thereby avoiding accidental unlocking success caused by easy rotation of the lock sleeve 2 by infants, and further improving the use safety of the emulsion pump. Because the clamping concave portions 1121 are distributed on two sides of the vertical chute 111, the user can lock the emulsion pump by rotating the lock sleeve 2 clockwise or anticlockwise.

Further, as shown in fig. 10, the upper end of the lock sleeve 2 is formed with an inner flange 213, that is, the inner flange 213 is integrally connected with the sleeve part 21, and as shown in fig. 5, the inner flange 213 is provided at the corresponding upper side of the upper end of the mounting cap 1, and the inner flange 213 can contact and connect the upper end of the mounting cap 1, so that the lock sleeve 2 is hung on the mounting cap 1 by the inner flange 213 due to the gravity when the emulsion pump is in the unlocked state.

Further, as shown in fig. 10, the outer wall of the sleeve portion 21 is formed with anti-slip grooves 212 extending in the vertical direction, so that the emulsion is inevitably adhered to the lock cover 2 in daily use, and the anti-slip grooves 212 prevent the user from slipping relative to the lock cover 2 when locking or unlocking.

In some embodiments, as shown in fig. 12, the vertical sliding groove 111 is provided to penetrate the mounting cover 1 upward, so that the slider 211 of the lock sleeve 2 can be easily inserted into the vertical sliding groove 111 from the upper end of the vertical sliding groove 111 during the assembly of the emulsion pump, and then the pressing head 3 is connected with the piston rod 4, so that the slider 211 is prevented from being separated upward from the mounting cover 1 because the outer housing 31 of the pressing head 3 blocks the upper end of the lock sleeve 2 during the use.

The operation principle of the pump assembly is briefly described as follows: as shown in fig. 1 to 5, the pump assembly specifically further includes a piston 5, a check valve ball 6, a spring 7, and a pump casing 8, a pump cavity 801 is formed in the pump casing 8, the piston 5 is disposed in the pump cavity 801, the lower end portion of the piston rod 4 is connected with the piston 5, an inner pipe 401 is formed in the piston rod 4, and the inner pipe 401 is communicated with the liquid outlet 301 of the pressing head 3. As shown in fig. 3, when the pump assembly is in the working state (the emulsion pump is in the unlocking state), the elastic restoring force of the spring 7 pushes the piston rod 4 and the piston 5 to the upper limit position, and at this time, the piston 5 seals the lower end of the inner pipe 401, so that the emulsion cannot flow out from the liquid outlet 301 even if the bottle body is inverted; when the pressing head 3 is pressed down by hand, the pressing head 3 drives the piston rod 4 to move downwards, the piston 5 moves upwards for a certain distance relative to the piston rod 4, so that the lower end of the inner pipe 401 is opened, but since the piston rod 4 is provided with a pushing cover part for blocking the upper end of the piston 5, the piston rod 4 pushes the piston 5 downwards, meanwhile, the spring 7 is further elastically compressed by the piston rod 4, and the piston 5 presses emulsion stored in the pump cavity 801 above the check valve ball 6, so that the emulsion is extruded into the inner pipe 401, and the emulsion can be sprayed out from the liquid outlet 301 of the pressing head 3; when the piston rod 4 descends to the limit position, the user releases the pressing head 3, as shown in fig. 4, the piston rod 4 is pushed upwards by the elastic restoring force of the spring 7, so that the piston 5 moves downwards for a certain distance relative to the piston rod 4, the lower end of the inner pipeline 401 is closed by the piston 5, the piston rod 4 drives the piston 5 to ascend, the space below the piston 5 forms negative pressure, the check valve ball 6 moves upwards to open the valve port through the negative pressure effect, emulsion is sucked into the pump cavity 801 by the negative pressure, when the piston 5 ascends to the limit position, the check valve ball 6 falls down to close the valve port, and the emulsion in the bottle can be pumped continuously by repeatedly pressing and releasing the pressing head 3.

Claims (6)

1. The utility model provides a take emulsion pump of safety lock structure, includes pump unit spare, presses first (3) and is used for spiro union installation lid (1) on the bottleneck, pump unit spare includes piston rod (4), press first (3) to install the upper end of piston rod (4), installation lid (1) cover is located the outside of piston rod (4), its characterized in that: the mounting cover (1) is formed with tube shell portion (11), be formed with on the outer wall of tube shell portion (11) and erect spout (111), the upper end of tube shell portion (11) is formed with ring lock groove (112), the upper end of erect spout (111) with ring lock groove (112) intercommunication sets up, tube shell portion (11) adaptation is equipped with lock sleeve (2), lock sleeve (2) include shell portion (21), be formed with slider (211) on the lower extreme inner wall of shell portion (21), slider (211) are slided and are located erect in spout (111), slider (211) can follow erect spout (111) slide into in ring lock groove (112), the lower part of pressing head (3) is formed with outer shell (31), the upper end of lock sleeve (2) is located correspondingly the below of overcoat shell (31).

2. The emulsion pump with safety lock structure according to claim 1, wherein: a marking lug (214) is formed on the outer wall of the lower part of the lock sleeve (2), and the position of the marking lug (214) corresponds to the sliding block (211).

3. The emulsion pump with safety lock structure according to claim 1, wherein: the wall surface of the ring lock groove (112) is provided with clamping concave positions (1121), the clamping concave positions (1121) are distributed on two sides of the vertical sliding groove (111), the lower end of the sliding block (211) is provided with clamping convex portions (2111), and the clamping convex portions (2111) can move into the clamping concave positions (1121).

4. The emulsion pump with safety lock structure according to claim 1, wherein: an inner flange (213) is formed at the upper end of the lock sleeve (2), the inner flange (213) is arranged on the corresponding upper side of the upper end of the mounting cover (1), and the inner flange (213) can be in contact connection with the upper end of the mounting cover (1).

5. The emulsion pump with safety lock structure according to claim 1, wherein: the outer wall of the shell part (21) is provided with anti-slip grooves (212) extending in the up-down direction.

6. The emulsion pump with safety lock structure according to claim 1, wherein: the vertical sliding groove (111) is arranged to penetrate the mounting cover (1) upwards.

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