CN210697348U - Cup seat assembly, cup body assembly and food processor - Google Patents

Abstract

The application provides a cup holder subassembly, cup body component and cooking machine. The utility model provides a cup holder subassembly, its is used for connecting a cup and a frame subassembly, the frame subassembly includes power component, the cup holder subassembly includes the speed governing subassembly, the speed governing subassembly is including the output shaft that is used for connecting the cutter, power component is used for the drive the output shaft rotates, the speed governing subassembly is adjusted the rotation rate of output shaft makes the cutter of different functions can be connected to the output shaft to realize multiple functions.

Description

Cup seat assembly, cup body assembly and food processor

Technical Field

The application relates to the field of small household appliances, in particular to a cup holder assembly, a cup body assembly and a food processor.

Background

With the increasing living standard of people, many different types of food processors appear on the market. The functions of the food processor mainly include, but are not limited to, functions of making soybean milk, squeezing fruit juice, making rice paste, mincing meat, shaving ice, making coffee and/or blending facial masks and the like. The food processor can comprise a soybean milk machine, a stirrer or a wall breaking food processor and other machines for crushing and stirring food. Relevant cooking machine is because the rotational speed of output shaft can not be adjusted, leads to cooking machine's function singleness.

SUMMERY OF THE UTILITY MODEL

The application provides a cup holder subassembly, cup body component and cooking machine, the rotational speed of the adjustable output shaft of cup holder subassembly.

The application provides a cup holder subassembly, it is used for connecting a cup and a frame subassembly, the frame subassembly includes power component, the cup holder subassembly includes the speed governing subassembly, the speed governing subassembly is including the output shaft that is used for connecting the cutter, power component is used for the drive the output shaft rotates, the speed governing subassembly is adjusted the rotation rate of output shaft.

The cup holder assembly in the technical scheme can adjust the rotating speed of the output shaft, so that the output shaft can be connected with cutters with different functions to realize multiple functions.

Further, the speed regulating assembly comprises a second gear and a third gear which are connected to the output shaft and a first gear which is used for driving the second gear and the third gear to rotate, the rotating speeds of the second gear and the third gear are different, when the first gear is located at a first position, the first gear is meshed with the second gear, and when the first gear moves to a second position, the first gear is meshed with the third gear.

Further, the cup holder assembly comprises an operating rod, and the operating rod drives the first gear to move from the first position to the second position.

The speed regulating assembly of the technical scheme utilizes the operating rod to move the first gear to be meshed with the second gear or the third gear so as to regulate the rotating speed of the output shaft, and the operation is easy; meanwhile, only different cutters need to be replaced and the positions of the operating rods need to be adjusted according to different requirements, so that the number of parts can be reduced, and the cost is saved.

Further, the cup holder assembly comprises a first groove and a second groove for accommodating the operating rod, and the first gear moves from a first position to a second position in the process that the operating rod moves from the first groove to the second groove.

Furthermore, the second groove is located on one side of the first groove, and the operating rod firstly moves upwards along the first groove and then moves towards one side to enter the second groove.

The first accommodating part and the second accommodating part of the technical scheme can prevent the operating rod from moving due to the touch of an improper external force.

Further, the cup holder assembly comprises a first fixing portion located in the first groove, and the operating rod comprises a second fixing portion matched with the first fixing portion to limit the operating rod.

The first holding part and the second holding part of the technical scheme can prevent the operating rod from moving due to the touch of an improper external force.

Further, the cup holder assembly comprises an inclined groove, the inclined groove comprises the first groove and the second groove, and the inclined groove is arranged from the first groove to the second groove in an upward inclined mode.

The operating rod of the technical scheme is easy to operate.

Further, the cup holder assembly comprises a telescopic stop member, and the stop member moves to abut against the operating rod so as to limit the operating rod to the first position or the second position.

The stop piece of the technical scheme can prevent the operating rod from moving due to the contact of an improper external force.

Further, the moving direction of the operating rod is the same as that of the first gear, so that the first gear is driven to move from the first position to the second position.

Further, the cup holder assembly comprises an electromagnet for driving the operating rod to move, the cup holder assembly comprises a sun gear, a shaft part connected to the sun gear, a planet gear meshed with the sun gear, a support connected to the planet gear, and a fourth gear meshed with the support, the fourth gear drives the first gear to rotate, the first gear comprises a plurality of first tooth parts and a plurality of second tooth parts, the second gear comprises a plurality of third tooth parts, the third gear comprises a plurality of fourth tooth parts, when the first gear is located at a first position, the second tooth parts are meshed with the third tooth parts, when the first gear moves to a second position, the first tooth parts are meshed with the fourth tooth parts, the fourth gear is meshed with the first gear or the fourth gear is fixed to the first gear, the number of the first tooth parts is smaller than the number of the second tooth parts, the number of the third teeth portions is the same as the number of the second teeth portions, the number of the fourth teeth portions is greater than the number of the first teeth portions, and the number of the fourth teeth portions is greater than the number of the second teeth portions.

The application also provides a cup body assembly, including cup and foretell cup stand subassembly, the cup equipment extremely the cup stand subassembly.

Further, the cup body comprises a bottom wall and a through hole penetrating through the bottom wall, the through hole is used for the output shaft to penetrate through, the cup body assembly comprises a cutter connected to the output shaft, and the cutter is driven to rotate by the output shaft.

The application still provides a cooking machine, including frame subassembly and foretell cup body assembly, cup body assembly extremely the frame subassembly.

Further, the cup holder assembly is detachably assembled to the cup body and the chassis assembly.

The cup body of the technical scheme can be cleaned after being separated from the cup seat assembly, so that the weight is reduced, and the cleaning is convenient.

The application still provides a cooking machine, including frame subassembly and foretell cup seat subassembly, the frame subassembly includes the bulge, the bulge is used for supporting stop part makes its removal.

After the cup holder assembly is assembled to the base assembly, the operating rod cannot move due to the abutting of the stop piece, and the meshing of the first gear and the second gear or the third gear is effectively ensured; simultaneously, if the position of action bars is incorrect, become unable the cup seat subassembly equipment extremely the frame subassembly can remind the operator, prevents that the cooking machine from normally working, brings the puzzlement for the operator.

Drawings

Fig. 1 is a perspective view of the food processor of the present application, wherein the cup body assembly is not assembled to the base assembly.

Fig. 2 is a perspective view of the base assembly of the food processor shown in fig. 1.

Fig. 3 is an exploded view of the cup assembly of the food processor of the present application.

Figure 4 is an exploded view of the cup holder assembly of the present application.

FIG. 5 is an exploded view of the governor assembly of the cup holder assembly shown in FIG. 4.

Fig. 6 is a perspective view of the operating lever shown in fig. 5.

Figure 7 is a cross-sectional schematic view of the cup holder assembly of the present application wherein the first gear is in mesh with the second gear.

Fig. 8 is similar to fig. 7, wherein the first gear is in mesh with the third gear.

Fig. 9 is a perspective view of the cup holder assembly shown in fig. 5, wherein the upper housing is omitted.

Figure 10 is a perspective view of another embodiment of the cup holder assembly shown in figure 5.

Figure 11 is a cross-sectional schematic view of yet another embodiment of the cup holder assembly shown in figure 5.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1 to 9, the food processor includes a base assembly 1, a cup body assembly 2 assembled to the base assembly 1, and a cup cover 3 assembled to the cup body assembly 2. The cup body assembly 2 comprises a cup base assembly 21, a cup body 22 assembled to the cup base assembly 21, and a cutter positioned in the cup body 22. The housing assembly 1 includes a housing 10 and a power assembly (not shown) disposed within the housing 10. The power assembly may be a motor or the like. The power assembly drives the cutter to rotate so as to cut or whip the food material. Referring to fig. 2, the housing 10 includes a receiving portion 101 and a protrusion 102 extending into the receiving portion 101.

The cup holder assembly 21 is detachably assembled to the base assembly 1. The cup body 22 can be fixed with the cup seat component 21, and the cup body component 2 is directly placed on the base component 1, so that the assembly is convenient; the cup body 22 can also be detached from the cup seat assembly 21, the cup seat assembly 21 is firstly assembled to the base assembly 1, and then the cup body 22 is assembled to the cup seat assembly 21; or, the cup seat assembly 21 and the cup body 22 are assembled together, and then the cup seat assembly and the cup body 22 are assembled to the base assembly 1 together, so that the cup body 22 is convenient to clean.

The cup 22 is provided with a first link (not shown), the cup holder assembly 21 is provided with a second link (not shown), and the base assembly 1 includes a third link (not shown). Bowl cover 3 equipment extremely behind cup 22, bowl cover 3 drive first connecting rod and the second connecting rod removes, makes the second connecting rod intercommunication the third connecting rod, this moment, the cooking machine just can the circular telegram operation, prevents when bowl cover 3 does not assemble or not assemble in place, the potential safety hazard that the cooking machine operation was brought, for example, eat material splash or child maloperation etc..

Referring to fig. 3, the cutters include dough kneading blades 23, short shredding blades 24, long shredding blades 25, stirring blades 26 and other tools for cutting or stirring the food material. The cup 22 includes a bottom wall 220, a side wall 221 extending from the bottom wall 220, a handle 222 connected to the side wall 221, and a through hole 224 extending through the bottom wall 220. The knife is located in a space 223 enclosed by the bottom wall 220 and the side wall 221. The through-hole 224 communicates with the space 223. The cup assembly 2 also includes a drive mount 27 located within the cup 22. The cutter can be assembled to the transmission frame 27 according to actual needs, and the transmission frame 27 drives the cutter to rotate.

Referring to fig. 4 to 6, the cup holder assembly 21 includes an upper housing 210, a lower housing 211, a speed adjusting assembly 212, a stopper 216 to be stopped to the lower housing 211, and a fixing member 215 assembled to the lower housing 211 to stop the stopper 216. The cup 22 is assembled and fixed to the upper shell 210. The upper housing 210 includes a first aperture 2101. As shown in fig. 7, the upper housing 210 further includes a guide 2102. The lower housing 211 includes a bottom portion 2110, a sidewall 2111 extending from the bottom portion 2110, an inclined portion 2115 disposed on the sidewall 2111, and a second through hole 2114 penetrating through the bottom portion 2110. The speed regulating assembly 212 is located in a receiving portion 2113 enclosed by the bottom portion 2110 and the side wall 2111. The second perforation 2114 communicates with the receiving portion 2113.

Referring to fig. 5, the governor assembly 212 includes a first housing 2120, a second housing 2121, and a third housing 2122 fixed together, a sun gear 2123, planet gears 2124, and a carrier 2125 between the first housing 2120 and the second housing 2121, a first gear 2126, a second gear 2127, a third gear 2128, a fourth gear 2129, and an operating rod 2130 between the second housing 2121 and the third housing 2122, a shaft 2131 fixed to the sun gear 2123, and an output shaft 2132 fixed to the second gear 2127 and the third gear 2128.

The first housing 2120 includes a first hole 2120 through which the shaft portion 2131 passes. The shaft portion 2131 passes through the second through hole 2114 to be connected with a power assembly of the base assembly 1, and the power assembly drives the shaft portion 2131 to rotate. The third housing 2122 includes a third hole 21220 through which the output shaft 2132 passes. The output shaft 2132 passes through the through hole 224 of the cup 22. The cutter is assembled to the output shaft 2132, and the output shaft 2132 drives the cutter to rotate. When the transmission frame 27 is used, the transmission frame 27 is assembled to the output shaft 2132, and the output shaft 2132 drives the transmission frame 27 to rotate, and further drives the cutter to rotate.

The shaft portion 2131 is connected to the sun gear 2123, and the shaft portion 2131 drives the sun gear 2123 to rotate. In the illustrated embodiment, three planet wheels 2124 are engaged with the sun wheel 2123, and the sun wheel 2123 drives the planet wheels 2124 to rotate. The planet gears 2124 are fixed to the support 2125 to rotate the support 2125. The rotational speed of the carrier 2125 is the same as the rotational speed of the planet wheels 2124. The bracket 2125 includes teeth 21250.

The second housing 2121 includes a second hole 21210 through which the tooth 21250 passes. The second housing 2121 further includes a stopper 21212, a sliding groove 21211, and a slant surface 21213. The fourth gear 2129 is assembled to the position-limiting post 21213 to engage with the tooth 21250, and the bracket 2125 drives the fourth gear 2129 to rotate. The fourth gear 2129 rotates at the same speed as the support 2125. The first gear 2126 is fixed to the fourth gear 2129, and the fourth gear 2129 rotates the fourth gear 2126. The rotational speed of the first gear 2126 is the same as the rotational speed of the fourth gear 2129.

The first gear 2126 includes a plurality of first teeth 21260 and a plurality of second teeth 21261. The number of the first teeth 21260 is smaller than the number of the second teeth 21261. The second tooth 21261 is engaged with the third tooth 21270 of the second gear 2127, and the first gear 2126 rotates the second gear 2127. Since the number of the third teeth 21270 is the same as that of the second teeth 21261, the rotational speed of the second gear 2127 is the same as that of the first gear 2126.

The first tooth 21260 meshes with a fourth tooth 21280 of the third gear 2128, and the first gear 2126 rotates the third gear 2128. The number of the fourth teeth 21280 is greater than the number of the first teeth 21260, and the number of the fourth teeth 21280 is greater than the number of the second teeth 21261, so that the rotation speed of the third gear 2128 is lower than the rotation speed of the first gear 2126, thereby achieving the purpose of speed reduction. Because the output shaft 2132 is connected to the second gear 2127 and the third gear 2128, when the second gear 2127 drives the output shaft 2132 to rotate, a relatively high rotation speed is output, and when the third gear 2128 drives the output shaft 2132 to rotate, a relatively low rotation speed is output.

In the illustrated embodiment, when the output speed of the power assembly is controlled at 18000RPM, the speed of the support 2125 is reduced to 2000RPM, preferably 10000/1100RPM, by the reduction of the planet wheels 2124. Since the second gear 2127 rotates at the same speed as the planetary gear 2124, the output shaft 2132 is adjusted to 2000RPM, preferably 10000/1100RPM, by the transmission of the first gear 2126 and the third gear 2128, so as to rotate a tool requiring a higher speed, such as the chopping knife 24, the stirring knife 26, etc.

In the illustrated embodiment, when the output speed of the power assembly is controlled at 6300RPM, the speed of the output shaft 2132 can be reduced to 100RPM by the reduction of the third gear 2128, so that the cutter can be maintained at a low speed to rotate the cutter requiring a lower speed, such as the filament cutter 25 and the dough cutter 23.

As shown in fig. 5 to 6, the operating rod 2130 includes a fixing portion 21301, a receiving hole 21302 disposed on the fixing portion 21301, a rod portion 21303 connected to the fixing portion 21301, a guiding post 21304 disposed on the rod portion 21303, a connecting portion 21305 connected to the rod portion 21303, and a handheld portion 21306 connected to the connecting portion 21305. The first gear 2126 is received in the receiving hole 21302 to limit the operating rod 2130 to the first gear 2126, so that the operating rod 2130 can drive the first gear 2126 to move.

The guiding column 21304 is located in the sliding slot 21211 and moves along the sliding slot 21211, so as to effectively ensure the smooth sliding of the operating rod 2130, and limit the operating rod 2130 to prevent it from separating from the second housing 2121. As shown in fig. 8, the fixing portion 21301 includes an accommodating portion 21307 for accommodating the first gear 2126, so as to effectively ensure that the operating rod 2130 can drive the first gear 2126 to move.

As shown in fig. 1, the cup holder assembly 21 further includes an inclined groove, and the inclined groove includes a first recess 2134 and a second recess 2135 for accommodating the operating rod 2130. The inclined groove is arranged in an upward inclined manner from the first groove 2134 to the second groove 2135, the operating rod 2130 is forced to slide from the first groove 2134 to the second groove 2135, and in the process, the operating rod 2130 drives the first gear 2126 to move in the vertical direction.

Referring to fig. 7 and 8, when the operating rod 2130 is located in the first recess 2134, the first gear 2126 is located at a first position, and at this time, the first gear 2126 is engaged with the second gear 2127, and when the operating rod 2130 moves to the second recess 2135, the first gear 2126 is driven to move to a second position, and at this time, the first gear 2126 is engaged with the third gear 2128, so as to drive the output shaft 2132 to have different rotation speeds.

As shown in fig. 9, when the cup holder assembly 21 is placed in the receiving portion 101 of the base assembly 1, the protrusion 102 of the base assembly 1 abuts against the stop member 216 of the cup holder assembly 21, so that the stop member 216 moves upward to one side of the operating rod 2130, and the operating rod 2130 is prevented from moving under force to disengage the first gear 2126 from the second gear 2127 or the third gear 2128, which may cause a failure. When the operating rod 2130 is located between the first position and the second position, the cup holder assembly 21 cannot be assembled due to the interference between the stopper 216 and the operating rod 2130, and an operator can be reminded of improper operation.

In the illustrated embodiment, the cup holder assembly 21 includes an inclined groove, and the operating rod 2130 is forced to slide from the first groove 2134 to the second groove 2135, which is not limited by the present application. Referring to fig. 10, the first recess 2134 and the second recess 2135 may be stepped, the second recess 2135 is located on one side of the first recess 2134, and the operating rod moves upward along the first recess 2134 and then moves to one side to enter the second recess 2135. The cup holder assembly 1 further comprises a first retaining portion 2112 located in the first recess 2134, and the operating rod 2130 comprises a second retaining portion 21308 matched with the first retaining portion 2112 to limit the operating rod 2130. One of the first retaining portion 2112 and the second retaining portion 21308 is a protrusion, and the other is a recess for receiving the protrusion.

In the above embodiments, the displacement of the operating rod 2130 in the horizontal direction drives the first gear 2126 to move from the first position to the second position, which is not limited in the present application. Referring to fig. 11, the moving direction of the operating rod 2130 is the same as the moving direction of the first gear 2126, so as to drive the first gear 2126 to move from the first position to the second position. In the illustrated embodiment, the electromagnet 2140 is configured to drive the operating rod 2130 to move in the vertical direction, and further drive the first gear 2126 to move in the vertical direction.

In the above embodiment, the speed regulating assembly 212 regulates the speed mechanically, but the application is not limited thereto. The speed regulating component 212 can also regulate speed by means of electronic speed regulation.

The cup holder assembly can adjust the rotating speed of the output shaft 2132, so that the output shaft 2132 can be connected with cutters with different functions to realize multiple functions; meanwhile, only different cutters need to be replaced and the position of the operating rod 2130 needs to be adjusted according to different requirements, and only one cup body 22 needs to be configured, so that the number of parts can be reduced, and the cost can be saved; further, the rotation speed of the output shaft 2132 is adjusted by the movement of the operating rod 2130, so that the operator can adjust the rotation speed of the output shaft 2132 by himself, thereby improving the operational interest of the cup holder assembly.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims (15)

1. A cup holder assembly for connecting a cup (22) to a holder assembly (1), the holder assembly (1) comprising a power assembly, characterized in that the cup holder assembly comprises a speed regulation assembly (212), the speed regulation assembly (212) comprising an output shaft (2132) for connection to a tool, the power assembly for driving the output shaft (2132) to rotate, the speed regulation assembly (212) adjusting the rotational speed of the output shaft (2132).

2. The cup holder assembly according to claim 1, wherein the speed adjustment assembly (212) comprises a second gear (2127) and a third gear (2128) connected to the output shaft (2132) and a first gear (2126) for driving the second gear (2127) and the third gear (2128) to rotate, the second gear (2127) and the third gear (2128) having different rotational speeds, the first gear (2126) being engaged with the second gear (2127) when the first gear (2126) is in the first position, and the first gear (2126) being engaged with the third gear (2128) when the first gear (2126) is moved to the second position.

3. The cup holder assembly according to claim 2, comprising an operating rod (2130), wherein the operating rod (2130) moves the first gear (2126) from the first position to the second position.

4. A cup holder assembly according to claim 3, characterized in that the cup holder assembly comprises a first recess (2134) and a second recess (2135) for receiving the operating rod (2130), the first gear wheel (2126) moving from a first position to a second position during movement of the operating rod (2130) from the first recess (2134) to the second recess (2135).

5. The cup holder assembly according to claim 4, wherein the second recess (2135) is located on one side of the first recess (2134), and the lever (2130) first moves up the first recess (2134) and then moves to one side into the second recess (2135).

6. The cup holder assembly according to claim 5, wherein the cup holder assembly comprises a first retaining portion (2112) located in the first recess (2134), and the operating rod (2130) comprises a second retaining portion (21308) cooperating with the first retaining portion (2112) to restrain the operating rod (2130).

7. The cup holder assembly according to claim 4, comprising an inclined groove comprising the first groove (2134) and the second groove (2135), the inclined groove being disposed obliquely upward from the first groove (2134) to the second groove (2135).

8. A cup holder assembly according to claim 7, comprising a retractable stop (216), said stop (216) moving into abutment with said lever (2130) to limit said lever (2130) to said first or second position.

9. A cup holder assembly according to claim 3, wherein the operating rod (2130) moves in the same direction as the first gear (2126) to move the first gear (2126) from the first position to the second position.

10. A cup holder assembly according to claim 9, comprising an electromagnet (2140) for driving the movement of the operating rod (2130), the cup holder assembly comprising a sun gear (2123), a shaft portion (2131) connected to the sun gear (2123), planet gears (2124) meshing with the sun gear (2123), a carrier (2125) connected to the planet gears (2124), a fourth gear (2129) meshing with the carrier (2125), the fourth gear (2129) driving the first gear (2126) in rotation, the first gear (2126) comprising a number of first teeth (21260) and a number of second teeth (21261), the second gear (2127) comprising a number of third teeth (21270), the third gear (2128) comprising a number of fourth teeth (21280), the second gear (21261) meshing with the third teeth (21270) when the first gear (2126) is in the first position, when the first gear (2126) is moved to the second position, the first teeth (21260) are engaged with the fourth teeth (21280), the fourth gear (2129) is engaged with the first gear (2126) or the fourth gear (2129) is fixed to the first gear (2126), the number of the first teeth (21260) is smaller than the number of the second teeth (21261), the number of the third teeth (21270) is the same as the number of the second teeth (21261), the number of the fourth teeth (21280) is greater than the number of the first teeth (21260), and the number of the fourth teeth (21280) is greater than the number of the second teeth (21261).

11. A cup assembly, comprising a cup (22) and a cup holder assembly according to any one of claims 1 to 10, the cup (22) being assembled to the cup holder assembly.

12. The cup assembly of claim 11 wherein the cup (22) includes a bottom wall (220) and a throughbore (224) extending through the bottom wall (220), the throughbore (224) passing the output shaft (2132), the cup assembly including a cutter connected to the output shaft (2132), the output shaft (2132) driving the cutter to rotate.

13. A food processor, characterized by comprising a base assembly (1) and a cup assembly according to claim 11 or 12, assembled to said base assembly (1).

14. The food processor of claim 13, wherein the cup holder assembly is detachably assembled to the cup body (22) and the base assembly (1).

15. Food processor, characterized in that it comprises a base assembly (1) and a cup assembly according to claim 8, said base assembly comprising a projection (102), said projection (102) being intended to abut against said stop (216) for its movement.

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