Detachable connecting device

Abstract

The utility model discloses a detachable connecting device, which belongs to the technical field of fluid distribution, is used for detachable connection of an outer bottle and a pump head in a fluid product distributor, and comprises a track groove and a bulge moving along with the track groove, the track groove is arranged on one of the outer bottle and the pump head, and the bulge is arranged on the other one of the outer bottle and the pump head; the positioning structure is arranged between the bulge and the rail groove, and is used for keeping the connection state between the outer bottle and the pump head. According to the fluid product distributor, the outer bottle and the pump head are fixed through the detachable connecting device, so that the outer bottle can be repeatedly used, additional assembly structure design does not need to be carried out on the inner bottle, the manufacturing cost of the inner bottle is reduced, and therefore after the fluid product distributor is used for a long time, the working efficiency is improved. The replacement cost of the inner bottle can be kept at a low level, and extra use cost accumulation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid product distribution technical field, especially relate to a detachable connecting device. BACKGROUND

[0002] In the prior art, fluid product dispensers are known, which comprise a reservoir for storing a fluid product and a pump head detachably connected to the reservoir, and the fluid product stored in the reservoir can be pumped out by pressing the pump head during use.

[0003] The reservoir sometimes needs to be protected to prevent the fluid product stored therein from leaking due to accidental damage of the reservoir. Therefore, a shell is arranged outside the reservoir in a fixed connection manner.

[0004] In order to reduce the use cost, in the prior art, the reservoir is usually designed to be replaceable, and when replacing, the reservoir and the shell outside the reservoir are discarded together, and then a new one is replaced.

[0005] However, since the shell usually does not directly contact the fluid product, the shell for protecting the reservoir can actually not be replaced, and discarding the shell together results in unnecessary use cost for the user. SUMMARY

[0006] In view of the problem of high cost of replacing the reservoir in the fluid product dispenser in the prior art, the utility model aims to provide a detachable connecting device to at least partially solve the above problems.

[0007] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0008] A detachable connecting device for detachable connection of an outer bottle and a pump head in a fluid product dispenser, comprising a track groove and a protrusion moving along the track groove, the track groove is arranged on one of the outer bottle and the pump head, and the protrusion is arranged on the other; further comprising a positioning structure arranged between the protrusion and the track groove, the positioning structure is used to maintain the connection state between the outer bottle and the pump head.

[0009] In some preferred embodiments, the track groove is arranged in an inclined manner.

[0010] In some preferred embodiments, the track groove comprises two guide rails arranged opposite to each other and used to guide the movement of the protrusion.

[0011] In some preferred embodiments, the two guide rails are parallel to each other and the distance therebetween is matched with the protrusion.

[0012] In some preferred embodiments, the track groove further comprises auxiliary tracks, two of which are arranged at the lower ends of the two guide tracks respectively, and the auxiliary tracks are used to guide the protrusion to enter and exit the track groove.

[0013] In some preferred embodiments, the two auxiliary tracks are both arranged in an inclined manner and have opposite inclined directions, and the lower ends of the two auxiliary tracks are away from each other so as to guide the protrusion to enter and exit the track groove.

[0014] In some preferred embodiments, the leading end of the protrusion is provided with a guide angle.

[0015] In some preferred embodiments, the positioning structure comprises a clamping head and a clamping groove which are used in cooperation, the clamping head is arranged on the track groove, and the clamping groove is arranged on the protrusion; the clamping head is elastically deformed to avoid the leading end of the protrusion under the action of an external force, so as to be clamped into or out of the clamping groove.

[0016] In some preferred embodiments, the track groove is further provided with a receiving hole or a receiving groove which is used to provide an avoiding space for the clamping head.

[0017] In some preferred embodiments, the protrusion and the track groove are both provided with cooperating stop surfaces which are used to make the protrusion stop at the position defined by the positioning structure; the included angle between the stop surface and the leading direction of the protrusion is not more than 90°.

[0018] With the above technical scheme, the utility model has the advantages that: the utility model discloses a detachable connecting device to fix the outer bottle and the pump head, so that the outer bottle can be reused when replacing the liquid storage tank, thereby reducing the replacement quantity when replacing the liquid storage tank, and further realizing the cost saving effect. Moreover, the outer bottle and the pump head are directly fixedly connected, so that the structure of the liquid storage tank does not need to be additionally designed to be suitable for the outer bottle connection, thereby helping to reduce the manufacturing cost of the liquid storage tank as a consumable, so that the replacement cost of the liquid storage tank can be kept at a low level after long-term use of the fluid product dispenser, and additional use cost accumulation does not occur. In addition, the detachable connection design structure between the outer bottle and the pump head in the utility model is simple, and there is no wearing part, which further reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structural schematic view of the utility model.

[0020] Fig. 2 It is a sectional view of the utility model.

[0021] Fig. 3The utility model discloses a schematic diagram of the arrangement of the track groove on the pump head.

[0022] Fig. 4 The utility model discloses a schematic diagram of the arrangement of the projection on the outer bottle.

[0023] Fig. 5 The utility model discloses a schematic diagram of the cross section when the pump head and the outer bottle are assembled.

[0024] Fig. 6 The utility model discloses a schematic diagram of the position of the stop surface when the pump head and the outer bottle are assembled.

[0025] In the drawing: 1-inner bottle, 11-pierceable structure, 12-housing, 2-pump head, 21-pump body, 22-pump shell, 23-pressing cover, 3-outer bottle, 4-track groove, 41-first guide rail, 42-second guide rail, 43-first auxiliary rail, 44-second auxiliary rail, 5-projection, 51-guide angle, 6-clamping head, 7-clamping groove, 8-housing hole, 9-stop surface. DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] It needs to be explained that in the description of the utility model, the orientation or position relation indicated by the terms "upper", "lower", "left", "right", "front", "back" and the like is the orientation or position relation based on the description of the structure of the utility model shown in the drawings, and is only for the convenience of describing the utility model simply, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as the limitation to the utility model.

[0028] For "first" and "second" in the technical scheme, it is only the denomination distinction of the same or similar structure, or the corresponding structure with similar function, and is not the arrangement of the importance of these structures, and has no order, or comparison size, or other meanings.

[0029] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the overall concept and the specific context of the solution.

[0030] Example 1

[0031] A detachable connection device for detachable connection between outer bottle 3 and pump head 2 in a fluid product dispenser.

[0032] like Figs. 1-2 As shown, the fluid product dispenser includes an inner bottle 1 for storing fluid products. The pump head 2 includes a pump body 21 capable of being pressed, a pump housing 22 for supporting the pump body 21, and a pressure cap 23 installed at the discharge end of the pump body 21 and movable relative to the pump housing 22. The pump housing is fixed to the opening of the inner bottle 1 by means of threads or snap-fit ​​connections. The suction end of the pump body is connected to the interior of the inner bottle 1. Applying pressure through the pressure cap drives the pump body to operate, thereby pumping out the fluid product stored in the inner bottle 1. The pressure cap 23 typically also has a spray channel to facilitate the delivery of the fluid product pumped out by the pump body 21 in a predetermined direction. For example, the opening of the inner bottle 1 is sealed by a puncturable structure 11 (a membrane or plug-like component made of elastic material). This puncturable structure 11 is pressed and fixed by a cover 12, which is fixedly connected to the neck of the inner bottle 1 by a snap-fit ​​structure. The suction end of the pump body (or an outer sleeve can be provided on its exterior, which is integrally formed with the pump housing 22, allowing puncture) punctures the inner bottle 1 to connect to its inner cavity. The fluid product dispenser also includes an outer bottle 3, which is fitted over the inner bottle 1, and the neck of the outer bottle 3 is connected to the pump head 2 (specifically, the pump housing) via a detachable connection device provided in this embodiment.

[0033] It is easy to understand that the inner bottle 1 can also be fixed in the outer bottle 3, for example, by means of threaded or snap-fit ​​connection. In this way, when the outer bottle 3 is assembled with the pump housing in the pump head 2, the pump body in the pump head 2 simultaneously connects with the inner cavity of the inner bottle 1. Alternatively, the inner bottle 1 can be eliminated, and the fluid product can be directly contained in the outer bottle 3. A similar sealing design can be used on the neck of the outer bottle 3. When the outer bottle 3 is assembled with the pump housing in the pump head 2, the inner cavity of the outer bottle 3 also simultaneously connects with the pump body in the pump head 2.

[0034] like Figs. 3-4As shown, in the present embodiment, the detachable connecting device comprises a track groove 4 and a protrusion 5 which moves along the track groove 4. The track groove 4 is arranged on the outer wall of the pump head 2, and the protrusion 5 is arranged on the inner wall of the neck of the outer bottle 3. The detachable connecting device further comprises a positioning structure which is arranged between the track groove 4 and the protrusion 5, and which is used to maintain the connection between the outer bottle 3 and the pump head 2.

[0035] The track groove 4 is arranged in an inclined manner as a whole, so that the protrusion 5 moves along the axial direction of the pump head 2 and also moves along the circumferential direction of the pump head 2 when the protrusion 5 moves in the track groove 4.

[0036] The track groove 4 specifically comprises a first guide track 41 and a second guide track 42, which are arranged in a substantially parallel manner and have a spacing between them which is substantially equal to the size of the protrusion 5, so that the protrusion 5 does not shake in the axial direction when the protrusion 5 moves in the track groove 4.

[0037] For example, the first guide track 41 is arranged on the upper side of the second guide track 42. When the pump head 2 and the outer bottle 3 are assembled, the protrusion 5 first enters the track groove 4 from the opening formed at the lower end of the first guide track 41 and the second guide track 42, and then the pump head 2 and the outer bottle 3 are relatively rotated, so that the protrusion 5 slides on the second guide track 42, thereby driving the protrusion 5 to a position where the protrusion 5 can be positioned, i.e. to a position where the positioning structure functions, and further rotation causes the pump head 2 and the outer bottle 3 to be stably connected under the positioning action of the positioning structure. When the pump head 2 and the outer bottle 3 need to be separated, the pump head 2 and the outer bottle 3 are reversely rotated, so that the positioning action of the positioning structure is released, and then the pump head 2 and the outer bottle 3 are further reversely rotated, so that the protrusion 5 slides on the first guide track 41, thereby causing the protrusion 5 to slide out of the track groove 4, and achieving the separation of the pump head 2 and the outer bottle 3.

[0038] It is easy to understand that, since the track groove 4 is arranged obliquely, the pump head 2 and the outer bottle 3 can be disassembled by axial force. Specifically, when the pump head 2 and the outer bottle 3 are assembled, the protrusion 5 first enters the track groove 4 from the opening formed at the lower end of the first guide track 41 and the second guide track 42, and under the action of gravity or axial pressure of the pump head 2, the protrusion 5 is axially lifted relative to the track groove 4, so that the protrusion 5 can slide along the first guide track 41, and the protrusion 5 is driven to a position where it can be positioned, i.e. the protrusion 5 is driven to a position where the positioning structure works, and then the pump head 2 and the outer bottle 3 are rotated circumferentially, so that the pump head 2 and the outer bottle 3 are connected stably under the positioning action of the positioning structure. When the pump head 2 and the outer bottle 3 need to be disassembled, the pump head 2 and the outer bottle 3 are first rotated in the opposite direction, so that the positioning action of the positioning structure is released, and then an axial pulling force is applied to the pump head 2, so that the protrusion 5 moves away from the position where it is positioned and slides along the second guide track 42 until the protrusion 5 slides out of the track groove 4, thereby achieving the separation of the pump head 2 and the outer bottle 3.

[0039] The track groove 4 further comprises auxiliary tracks, two of which are a first auxiliary track 43 and a second auxiliary track 44, the first auxiliary track 43 being connected at the lower end of the first guide track 41, and the second auxiliary track 44 being connected at the lower end of the second guide track 42. The first auxiliary track 43 and the second auxiliary track 44 are substantially in the shape of an "eight", so that the protrusion 5 can more easily enter and exit the track groove 4 through the arrangement of the two auxiliary tracks.

[0040] The protrusion 5 is provided with a guide angle 51 on the upper side of the leading end, the guide angle 51 being in the shape of an oblique angle, and the guide angle 51 being adapted to the first auxiliary track 43.

[0041] The positioning structure comprises a clamping head 6 and a clamping groove 7 which are used in cooperation. The clamping head 6 is arranged on the groove bottom of the track groove 4, which is the side surface of the track groove 4 facing the protrusion 5, and the clamping groove 7 is formed on the surface of the protrusion 5 facing the track groove 4. The clamping head 6 has the ability to elastically deform under the action of external force, so that it elastically deforms to avoid the leading end of the protrusion 5, so as to be clamped into or out of the clamping groove 7.

[0042] The bottom of the track groove 4 is further provided with a receiving hole 8, and the clamping head 6 is arranged in the receiving hole 8. Usually, the clamping head 6 and the track groove 4 are integrally formed on the pump head 2. The clamping head 6 is in a strip shape as a whole and is arranged in a direction parallel to the first guide rail 41. The surface of the clamping head 6 is provided with a protrusion which protrudes into the track groove 4 and has the same shape and size as the clamping groove 7. In this way, when the clamping head 6 is pressed by the protruding end of the protrusion 5, the clamping head 6 can be embedded into the receiving hole 8 by elastic deformation. When the protrusion 5 moves to a position where the clamping groove 7 is opposite to the protrusion on the clamping head 6, the clamping head 6 is reset and the clamping block on the clamping head 6 is embedded into the clamping groove 7, so that the position of the protrusion 5 in the track groove 4 is limited. Of course, in other preferred embodiments, the receiving hole 8 can be replaced by a receiving groove (in a non-through manner).

[0043] The use process of the detachable connecting device provided in the embodiments of the present application is as follows:

[0044] In use, the inner bottle 1 is connected to the pump head 2, then the outer bottle 3 is sleeved outside the inner bottle 1, the protrusion 5 is aligned with the notch of the track groove 4, then the pump head 2 is loosened, the pump head 2 connected with the inner bottle 1 falls under the action of gravity, the protrusion 5 automatically slides to the positioning structure in the track groove 4, then the pump head 2 and the outer bottle 3 are screwed, so that the clamping head 6 is clamped into the clamping groove 7, thereby realizing the connection between the pump head 2 and the outer bottle 3. When the fluid product stored in the inner bottle 1 is used up and is replaced, the pump head 2 and the outer bottle 3 are unscrewed in the opposite direction, the clamping head 6 is away from the clamping groove 7, then the pump head 2 is pulled upward, the protrusion 5 slides out of the track groove 4, thereby realizing the separation of the pump head 2 and the outer bottle 3.

[0045] Compared with the prior art, the present application fixes the outer bottle 3 and the pump head 2 by the detachable connecting device, on the one hand, the outer bottle 3 can be repeatedly used, on the other hand, it is not necessary to design additional assembly structure (assembly structure for adapting the outer bottle 1) for the inner bottle 1, which helps to reduce the manufacturing cost of the inner bottle 1, so that the replacement cost of the inner bottle 1 can be kept at a low level after long-term use of the fluid product dispenser, and additional use cost accumulation does not occur. In addition, the detachable connection design structure between the outer bottle and the pump head in the present application is simple and does not have a wearing part, which further reduces the use cost.

[0046] It is easy to understand that the track groove 4 described above can be more than one, for example, two or more and arranged circumferentially at intervals on the outer wall of the pump head 2, for example, circumferentially distributed. Correspondingly, the protrusion 5 is configured in the same number and arranged in the same way in the inner wall of the neck of the outer bottle 3.

[0047] It is also easy to understand that the track groove 4 can also be arranged on the inner wall of the neck of the outer bottle 3, and the protrusion 5 is arranged on the outer wall of the pump head 2, and the track groove 4 is turned upside down by 180°, and the groove is located on the upper side.

[0048] Embodiment 2

[0049] The protrusion 5 and the track groove 4 are both provided with a stop surface 9 matched with each other, and the leading end of the protrusion 5 and the tail end of the track groove 4 are both provided with the stop surface 9, as shown in the figure. Fig. 5 When the stop surfaces of the protrusion 5 and the track groove 4 contact each other, the protrusion 5 is just positioned by the positioning structure, so that the protrusion 5 can be better positioned in the track groove 4.

[0050] The stop surface 9 is configured as a planar structure, and is further configured to have an included angle between the stop surface and the leading direction of the protrusion 5 not more than 90°, the leading direction of the protrusion 5 refers to the tangent direction of the protrusion 5 when it is positioned, and the included angle refers to the included angle between the tangent (a section in front of the protrusion 5) and the stop surface, as shown in the figure. Fig. 6

[0051] In this way, the protrusion 5 can be prevented from excessive rotation by arranging the stop surface 9.

[0052] The embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.​

Claims

1. A releasable attachment device characterised in that: The detachable connection between an outer bottle and a pump head in a fluid product dispenser comprises a track groove and a protrusion moving along the track groove, the track groove is arranged on one of the outer bottle and the pump head, and the protrusion is arranged on the other one; further comprising a positioning structure arranged between the protrusion and the track groove, the positioning structure is used to keep the connection between the outer bottle and the pump head.

2. The releasable attachment device of claim 1, wherein: The track groove is arranged in an inclined manner.

3. The releasable attachment device of claim 2, wherein: The track groove comprises two guide tracks arranged oppositely and used to guide the movement of the protrusion.

4. The releasable attachment device of claim 3, wherein: The two guide tracks are parallel to each other and have a spacing matched with the protrusion.

5. The releasable attachment device of claim 3, wherein: The track groove further comprises auxiliary tracks, the auxiliary tracks are two and arranged at the lower ends of the two guide tracks respectively, and the auxiliary tracks are used to guide the protrusion to enter and exit the track groove.

6. The releasable attachment device of claim 5, wherein: The two auxiliary tracks are arranged in an inclined manner and have opposite inclined directions, and the lower ends of the two auxiliary tracks are away from each other so as to guide the protrusion to enter and exit the track groove.

7. The releasable attachment device of claim 6, wherein: The leading end of the protrusion is provided with a guide angle.

8. The releasable attachment device of claim 1, wherein: The positioning structure comprises a clamping head and a clamping groove used in cooperation, the clamping head is arranged on the track groove, and the clamping groove is arranged on the protrusion; the clamping head is elastically deformed to avoid the leading end of the protrusion under the action of an external force, so as to be clamped into or out of the clamping groove.

9. The releasable attachment device of claim 8, wherein: The track groove is further provided with a receiving hole or a receiving groove, the receiving hole or the receiving groove is used to provide an avoiding space for the clamping head.

10. The releasable attachment device of claim 1, wherein: The protrusion and the track groove are both provided with cooperating stop surfaces, the stop surfaces are used to make the protrusion stop at the position defined by the positioning structure; the included angle between the stop surface and the leading direction of the protrusion is not more than 90°.

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