Portable coffee machine

Abstract

The utility model provides a portable coffee machine which comprises a water tank, a coffee brewing seat, a pressing assembly and a supporting sleeve, the pressing assembly comprises a push rod, an inner guide rod and an elastic reset piece, the push rod and the inner guide rod are coaxially arranged, the push rod is arranged outside the inner guide rod in a sleeved mode and is in sliding fit with the inner guide rod in the axial direction of the push rod, and the elastic reset piece is arranged on the supporting sleeve. Elastic restoring force of the elastic reset piece forces the push rod to move towards the extending position, the supporting sleeve is fixed in the containing groove, a guide groove extending in the axial direction of the supporting sleeve is formed in the sleeve wall of the supporting sleeve, the push rod is provided with a guide protrusion, the push rod is installed in the supporting sleeve, and the guide protrusion extends into the guide groove and is in sliding fit with the guide groove. A locking groove is formed in the end, away from the pressure applying part, of the guide groove, extends in the circumferential direction of the supporting sleeve and communicates with the guide groove. After the pressing part is subjected to the axial acting force of the push rod, the push rod drives the guide protrusion to move along the guide groove till the guide protrusion is opposite to the locking groove, and at the moment, after the pressing part is subjected to the circumferential acting force of the push rod, the push rod drives the guide protrusion to enter the locking groove. According to the coffee machine, it is guaranteed that the pressing process is smooth, the pressing assembly can be locked when the coffee machine is not used, miniaturization can be achieved conveniently, and the attractiveness is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field, specifically, it is a kind of portable coffee machine. BACKGROUND

[0002] To ensure the taste of coffee and the convenience of carrying, a portable coffee machine appears on the market, which is provided with a piston rod at the water pressure seat body between the water tank and the coffee brewing seat, and the water in the water tank is forced to enter the coffee brewing seat by pressing the piston rod, so as to realize the brewing of coffee.

[0003] In a kind of portable coffee machine, the piston rod includes piston, push rod and spring, the piston made of elastic material is connected to the free end of push rod, spring is sleeved on the outer end of push rod and abuts against the pressing end of push rod and the inner wall of coffee machine respectively, under the restoring force of spring, push rod is pushed and piston is reset, since spring resets, spring exerts force on push rod and drives piston to move along the corresponding sliding slot, the friction between piston and sliding slot will force piston to move away from push rod, and since piston is made of elastic material, it is easy to separate from push rod after being stressed, so that the piston rod loses effect.In addition, the existing applying assembly is that piston rod extends into sleeve and is in sliding cooperation with sleeve, and piston rod in sleeve occupies a large space inside sleeve, and the amount of hot water temporarily stored in sleeve is small, so users need to press piston rod frequently, and the experience is poor.

[0004] In addition, there is also a kind of portable coffee machine, the piston rod is only supported in radial direction by limiting protrusion provided at the end of outer peripheral wall and accommodating groove, since piston rod needs to move back and forth, when piston rod moves to the outermost position, since piston rod is only supported at inner end, piston rod is easy to swing in radial direction, causing the problem of jamming when pushing inward.In addition, the locking mechanism of piston rod is located at pressing end, and a part of pressing end of piston rod must be located outside coffee machine body, users realize the locking of piston rod by rotating piston rod, and the protruding part occupies a large space, and affects the overall appearance of coffee machine, and the part is easy to be knocked, causing unlocking, resulting in coffee liquid leakage. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of portable coffee machine, which can ensure smooth pressing process, and can lock pressing assembly when not in use, and is convenient to realize miniaturization and improve aesthetic degree.

[0006] To achieve the above object, the utility model provides a portable coffee machine, including water tank, water tank is provided with water storage cavity; Coffee brewing seat, coffee brewing seat is provided with coffee brewing cavity; Pressure assembly, water tank is equipped with containing groove, the slot mouth of containing groove is located on the outer wall of water tank, pressure assembly is installed in containing groove, pressure assembly can move between the stretch out position and the retracted position, pressure assembly is acted on by a force and supplies water in water storage cavity coffee brewing cavity; Pressure assembly includes push rod, inner guide rod and elastic reset piece, push rod is coaxial with inner guide rod, push rod is set in the outer of inner guide rod and is slid with inner guide rod in the axial direction of push rod, the elastic restoring force of elastic reset piece forces push rod to move towards the stretch out position, the axial end of push rod is provided with pressure part, and pressure part can stretch out from the slot mouth; Portable coffee machine still includes support sleeve, support sleeve is fixed in containing groove, the cylinder wall of support sleeve is provided with the guide groove that extends along the axial direction of support sleeve, push rod is provided with guide protrusion, push rod is installed in support sleeve, guide protrusion stretches into guide groove and is slid with guide groove, and one end of guide groove away from pressure part is equipped with locking groove, and locking groove extends along the circumference of support sleeve and is communicated with guide groove; After pressure part is acted on by the force along the axial direction of push rod, push rod drives guide protrusion to move along guide groove, until guide protrusion is opposite locking groove, at this moment, after pressure part is acted on by the force along the circumferential direction of push rod, push rod drives guide protrusion to enter locking groove.

[0007] From the above scheme can be seen, by setting inner guide rod on water tank, push rod is set in the outer side of inner guide rod and is slid with inner guide rod, elastic reset piece is set in the outer of push rod, and is sealed with the inner peripheral wall of push rod through the outer peripheral wall of inner guide rod, realize the positive pressure or negative pressure that is applied to the communication cavity when push rod moves relative to inner guide rod. Since push rod is set in the outer of inner guide rod, therefore, need not set piston, there is no prior art, due to the force direction of elastic reset piece to push rod and the friction force direction that piston is opposite and lead to piston from push rod to separate the problem. In addition, through the cooperation of guide groove and guide protrusion, realize the user to press push rod stably, guarantee the stability of push rod movement, through setting locking groove in guide groove end, after user applies axial force to push rod through pressure part, push rod drives guide protrusion to move along guide groove, until guide protrusion is opposite locking groove, at this moment, after pressure part is acted on by the force along the circumferential direction of push rod, push rod drives guide protrusion to enter locking groove. Through the way of rotation when pressing to limit position, realize the locking of push rod, like this, need not set locking structure in the end of push rod, can better realize the hiding of push rod when not using coffee machine, and facilitate to realize miniaturization, improve the degree of beauty, avoid the problem of solving that too long push rod is located outside coffee machine and causes accidental touch. In addition, the sliding cooperation of guide protrusion and guide groove in the moving direction of push rod, the end wall of guide groove can limit with guide protrusion, prevent pressure assembly from falling off from water tank.

[0008] A preferred scheme is that a communication cavity is arranged between the water storage cavity and the coffee brewing cavity, the water storage cavity and the coffee brewing cavity are communicated through the communication cavity, the water storage cavity is communicated with the communication cavity through the water inlet valve, and the communication cavity is communicated with the coffee brewing cavity through the water outlet valve; the inner guide rod is provided with a guide rod passage penetrating in the length direction, the guide rod passage is communicated with the communication cavity, the guide rod passage is communicated with the inner cavity of the push rod, and the outer peripheral wall of the inner guide rod is sealingly connected with the inner peripheral wall of the push rod; after the pressure applying part is subjected to the force, the push rod moves towards the communication cavity and applies positive pressure to the communication cavity to open the water outlet valve; after the force applied to the pressure applying part is removed, the elastic restoring member forces the push rod to move towards the direction away from the communication cavity under the action of the elastic restoring force, and the push rod applies negative pressure to the communication cavity to open the water inlet valve.

[0009] Therefore, the inner guide rod is hollow, hot water entering the communication cavity from the water inlet valve can be temporarily stored in the guide rod passage of the inner guide rod, the storage space is large, the frequency of pressing by the user can be reduced, and the user experience is improved. In addition, the inner guide rod and the push rod are multi-layered, can play a heat preservation role, avoid the influence of the external environment temperature on the temperature of the water in the inner guide rod, and thus ensure the coffee quality. Moreover, the sealing connection of the outer peripheral wall of the inner guide rod with the inner peripheral wall of the push rod can avoid water flowing out from between the push rod and the inner guide rod, and improve the overall sealing performance.

[0010] A further scheme is that the portable coffee machine further comprises a valve seat, the communication cavity is located in the valve seat, the water inlet valve and the water outlet valve are arranged on the valve seat, and the support sleeve, the valve seat and the water tank are fixedly connected; one end of the support sleeve close to the valve seat surrounds a limiting groove with the valve seat, a limiting protrusion is arranged on the peripheral wall of the inner guide rod, and the limiting protrusion is located in the limiting groove and is limited in cooperation with the limiting groove in the axial direction of the inner guide rod.

[0011] Therefore, the limiting protrusion on the inner guide rod is limited in cooperation with the support sleeve in the axial direction, the inner guide rod is fixed, and the stable connection of the inner guide rod with the water tank is ensured.

[0012] A further scheme is that the portable coffee machine further comprises a first sealing member, the first sealing member is sleeved on the outer peripheral wall of the inner guide rod; a guide rod positioning groove is arranged on the valve seat, one end of the inner guide rod extends into the guide rod positioning groove, and the first sealing member is pressed between the outer peripheral wall of the inner guide rod and the groove wall of the guide rod positioning groove.

[0013] Therefore, the sealing member is arranged between the outer peripheral wall of the inner guide rod and the groove wall of the guide rod positioning groove, water leakage from the connection position of the inner guide rod and the valve seat is avoided, and the sealing performance between the two is improved.

[0014] A preferred scheme is that the pressure applying assembly further comprises a second sealing member, the second sealing member is sleeved on one end of the inner guide rod away from the communication cavity and is pressed between the outer peripheral wall of the inner guide rod and the inner peripheral wall of the push rod.

[0015] Therefore, the sealing performance between the inner guide rod and the push rod is improved.

[0016] A preferred scheme is that the push rod comprises an inner sleeve and an outer sleeve arranged coaxially, the mounting cavity is formed between the inner sleeve and the outer sleeve, and the elastic return member is sleeved outside the inner sleeve and located in the mounting cavity; the outer sleeve is provided with a cantilever, and the guide protrusion is located at the free end of the cantilever; when the end wall of the inner sleeve abuts against the support sleeve, the guide protrusion and the locking groove are opposite in the circumferential direction of the support sleeve.

[0017] Therefore, through the arrangement of the inner sleeve and the outer sleeve, the heat preservation effect of the hot water in the guide rod channel of the inner guide rod is further achieved, the guidance of the push rod is better and more stable, the mounting cavity for mounting the elastic return member is formed between the outer sleeve and the push rod, and the assembly is facilitated. By arranging the guide protrusion at the free end of the cantilever, the guide protrusion can be driven to move along the radial direction of the push rod through the deformation of the cantilever, so as to facilitate the assembly of the push rod into the support sleeve.

[0018] A further scheme is that the number of the cantilevers, the guide protrusions, the guide grooves and the locking grooves is two or more, and the cantilevers, the guide protrusions, the guide grooves and the locking grooves correspond one by one; the cantilevers are arranged at intervals along the circumferential direction of the outer sleeve, the guide grooves are arranged at intervals along the circumferential direction of the support sleeve, the locking grooves are arranged at intervals along the circumferential direction of the support sleeve, one locking groove is communicated with one guide groove, and in the circumferential direction of the support sleeve, each locking groove is located on the same side of the corresponding guide groove.

[0019] Therefore, by arranging a plurality of guide protrusions, the stress uniformity in the circumferential direction is ensured, and the stability of the locking of the guide protrusion and the locking groove is ensured.

[0020] A further scheme is that a guide sleeve is arranged in the inner sleeve, the circumferential wall of the guide sleeve is attached to the inner circumferential wall of the inner sleeve, the inner guide rod is in sliding cooperation with the guide sleeve, and the guide sleeve is made of a metal material; or the inner circumferential wall of the inner sleeve is provided with a wear-resistant layer, and the inner guide rod is in sliding cooperation with the wear-resistant layer.

[0021] Therefore, by arranging the guide sleeve, the wear resistance of the inner sleeve is improved, and the friction is reduced, so that the push rod moves more smoothly.

[0022] A preferred scheme is that the coffee brewing seat is arranged below the water tank; the accommodating groove and the push rod both extend along the vertical direction, and the slot opening of the accommodating groove is located at the top of the water tank; or the accommodating groove and the push rod both extend along the horizontal direction, and the slot opening of the accommodating groove is located on the circumferential wall of the water tank.

[0023] Therefore, the opening of the accommodating groove can be located at the top or the circumferential wall of the water tank to achieve top pressure or side pressure, and the application range is wider.

[0024] A preferred solution is that the pressing assembly is locked in the retracted position when the pressing part is close to the outer wall of the water tank.

[0025] Therefore, when the coffee machine is not used, the pressing assembly is locked in the retracted position, and the pressing part is located close to the outer wall of the water tank, so that the length of the pressing assembly extending out of the water tank can be reduced, and the space occupied by the coffee machine can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural diagram of the first embodiment of the portable coffee machine of the present utility model.

[0027] Figure 2 is a sectional view of the first embodiment of the portable coffee machine of the present utility model.

[0028] Figure 3 is Figure 2 is a local enlarged view of A in FIG.

[0029] Figure 4 is a structural exploded view of the first embodiment of the portable coffee machine of the present utility model.

[0030] Figure 5 is a structural exploded view of the pressing assembly in the first embodiment of the portable coffee machine of the present utility model.

[0031] Figure 6 is a structural exploded view of the second embodiment of the portable coffee machine of the present utility model.

[0032] Figure 7 is a sectional view of the second embodiment of the portable coffee machine of the present utility model.

[0033] Figure 8 is Figure 7 is a local enlarged view of B in FIG.

[0034] The present utility model will be further described below in combination with the drawings and embodiments. DETAILED DESCRIPTION

[0035] The first embodiment of the portable coffee machine:

[0036] Referring to Figures 1 to 5The portable coffee machine of the embodiment comprises a water tank 1, a coffee brewing seat 2, a pressure applying assembly 3 and a supporting sleeve 8. The water tank 1 is internally provided with a water storage cavity 11, the coffee brewing seat 2 is arranged below the water tank 1, the coffee brewing seat 2 is internally provided with a coffee brewing cavity 21, a communication cavity 72 is arranged between the water storage cavity 11 and the coffee brewing cavity 21, and the water storage cavity 11 and the coffee brewing cavity 21 are communicated through the communication cavity 72. The water tank 1 is internally provided with a valve seat 7 close to the coffee brewing seat 2, the supporting sleeve 8, the valve seat 7 and the water tank 1 are fixedly connected, the communication cavity 72 is located in the valve seat 7, the valve seat 7 is further provided with a water inlet valve 5 and a water outlet valve 6, the water storage cavity 11 is communicated with the communication cavity 72 through the water inlet valve 5, the communication cavity 72 is communicated with the coffee brewing cavity 21 through the water outlet valve 6, and the water inlet valve 5 and the water outlet valve 6 are both one-way valves.

[0037] The water tank 1 is provided with a containing groove 12 extending along the vertical direction, the groove opening 121 of the containing groove 12 is located at the top of the water tank 1, and the supporting sleeve 8 and the pressure applying assembly 3 are both mounted in the containing groove 12. The pressure applying assembly 3 can move between an extended position and a retracted position.

[0038] The pressure applying assembly 3 comprises a push rod 30, an inner guide rod 9, an elastic reset member 35, a first sealing member 36 and a second sealing member 34.

[0039] The supporting sleeve 8 is provided with a limiting groove 81 around the valve seat 7 at one end close to the valve seat 7, the inner guide rod 9 is provided with a limiting protrusion 91 on the peripheral wall, the limiting protrusion 91 is located in the limiting groove 81 and is limitedly matched with the limiting groove 81 in the axial direction of the inner guide rod 9. The first sealing member 36 is sleeved on the outer peripheral wall of the inner guide rod 9, the valve seat 7 is provided with a guide rod positioning groove 71, one end of the inner guide rod 9 extends into the guide rod positioning groove 71, and the first sealing member 36 is squeezed between the outer peripheral wall of the inner guide rod 9 and the groove wall of the guide rod positioning groove 71.

[0040] The push rod 30 is coaxially arranged with the inner guide rod 9, and the push rod 30 is sleeved on the outer guide rod 9 and is in sliding fit with the inner guide rod 9 in the axial direction of the push rod 30.

[0041] The push rod 30 comprises a coaxially arranged and integrally formed outer sleeve 31 and inner sleeve 32, the outer sleeve 31 is located radially outside the inner sleeve 32, the extending direction of the outer sleeve 31 and the inner sleeve 32 is parallel to the extending direction of the accommodating groove 12, the outer end of the outer sleeve 31 and the inner sleeve 32 is connected away from the communication cavity 72, preferably, the elastic reset member 35 is a spring. The elastic reset member 35 is sleeved outside the inner sleeve 32 and located in the mounting cavity 38 formed between the outer sleeve 31 and the inner sleeve 32, the outer sleeve 31 is provided with an abutting wall 37 at one end close to the pressing part 33, the first end of the elastic reset member 35 abuts against the abutting wall 37 in the axial direction of the inner sleeve 32, the second end of the elastic reset member 35 abuts against the bottom wall of the support sleeve 8, and the elastic restoring force of the elastic reset member 35 forces the push rod 30 to move towards the extended position. The axial end of the push rod 30 is provided with a pressing part 33, and the pressing part 33 extends out of the slot 121 and is exposed outside the water tank 1 when the pressing assembly 3 is in the extended position.

[0042] The inner guide rod 9 is coaxially arranged with the outer sleeve 31 and the inner sleeve 32, and the inner guide rod 9 is provided with a guide rod channel 92 penetrating along the length direction, and the guide rod channel 92 is communicated with the communication cavity 72.

[0043] The inner sleeve 32 is sleeved outside the inner guide rod 9 and is in sliding fit with the inner guide rod 9, the outer peripheral wall of the inner guide rod 9 is sealingly connected with the inner peripheral wall of the inner sleeve 32, and the guide rod channel 92 is communicated with the inner cavity 321 of the inner sleeve 32. Preferably, a guide sleeve 39 can also be arranged in the inner sleeve 32, the peripheral wall of the guide sleeve 39 is fitted with the inner peripheral wall of the inner sleeve 32, the inner guide rod 9 is in sliding fit with the guide sleeve 39, and the guide sleeve 39 is made of metal material. Or in other embodiments, the guide sleeve can also not be arranged, or the guide sleeve is not arranged and a wear-resistant layer is arranged in the inner sleeve 32, and the inner guide rod 9 is in sliding fit with the wear-resistant layer.

[0044] The second sealing member 34 is sleeved on the end of the inner guide rod 9 away from the communication cavity 72 and is pressed between the outer peripheral wall of the inner guide rod 9 and the inner peripheral wall of the inner sleeve 32.

[0045] The barrel wall of the support sleeve 8 is provided with a guide groove 82 extending along the axial direction of the support sleeve 8, the outer sleeve 31 of the push rod 30 is provided with a cantilever 311, the free end of the cantilever 311 is provided with a guide protrusion 312, the push rod 30 is installed in the support sleeve 8, the guide protrusion 312 extends into the guide groove 82 and is in sliding fit with the guide groove 82, and the end of the guide groove 82 away from the pressing part 33 is provided with a locking groove 83, the locking groove 83 extends along the circumferential direction of the support sleeve 8 and is communicated with the guide groove 82.

[0046] When the coffee machine is not used, the user applies an axial force to the push rod through the pressing part 33, and the push rod 30 drives the guide protrusion 312 to move along the guide groove 82 until the end wall of the inner sleeve 32 abuts against the support sleeve 8, at which time the guide protrusion 312 and the locking groove 83 are opposite in the circumferential direction of the support sleeve 8. At this time, when the pressing part 33 is subjected to a circumferential force along the push rod 30, the push rod 30 drives the guide protrusion 312 into the locking groove 83, thereby locking the push rod 30 in the retracted position.

[0047] The number of the cantilever arms 311, the guide protrusions 312, the guide grooves 82 and the locking grooves 83 is two or more, and the cantilever arms 311, the guide protrusions 312, the guide grooves 82 and the locking grooves 83 are in one-to-one correspondence. The cantilever arms 311 are arranged at intervals in the circumferential direction of the outer sleeve 31, the guide grooves 82 are arranged at intervals in the circumferential direction of the support sleeve 8, and the locking grooves 83 are arranged at intervals in the circumferential direction of the support sleeve 8. One locking groove 83 communicates with one guide groove 82, and each locking groove 83 is located on the same side of the corresponding guide groove 82 in the circumferential direction of the support sleeve 8.

[0048] In the embodiment, the number of the cantilever arms 311, the guide protrusions 312, the guide grooves 82 and the locking grooves 83 is two, and the two cantilever arms 311 are arranged opposite in the radial direction of the outer sleeve 31. The free end of each cantilever arm 311 is provided with one guide protrusion 312, and the two guide grooves 82 are arranged opposite in the radial direction of the support sleeve 8.

[0049] In the embodiment, when the pressing assembly 3 is in the retracted position, the pressing part 33 is close to the outer wall of the water tank 1. Therefore, when the coffee machine is not used, the pressing assembly 3 is locked in the retracted position, and the pressing part 33 is located close to the outer wall of the water tank 1, so as to minimize the length of the pressing assembly 3 extending out of the water tank 1 and reduce the space occupied by the coffee machine.

[0050] When the pressing part 33 is subjected to the pressing force applied by the user, the push rod 30 moves towards and applies positive pressure to the communication cavity 72, the water outlet valve core 62 is forced to move away from the water outlet 65 to open the water outlet valve 6, while the water inlet valve 5 is closed and the elastic return member 35 is compressed and deformed. The hot water in the communication cavity 72 can enter the coffee brewing chamber 21 through the water outlet valve 6 to brew coffee.

[0051] When the user removes the force applied to the pressing part 33, the elastic return member 35 is forced to move the push rod 30 away from the communication cavity 72 under the action of its elastic restoring force. The inner sleeve 32 applies negative pressure to the communication cavity 72, and the water inlet valve core 52 moves away from the water inlet 54 to open the water inlet valve 5, while the water outlet valve 6 is closed. The hot water in the water storage chamber 11 enters the communication cavity 72 through the water inlet valve 5 and is temporarily stored therein. The user can provide the hot water in the water storage chamber 11 to the coffee brewing chamber 21 by intermittently pressing the pressing part 33.

[0052] Second embodiment of the portable coffee machine:

[0053] As the description of the second embodiment of the portable coffee machine of the present application, only the differences from the first embodiment of the portable coffee machine described above will be described below.

[0054] Referring to Figures 6 to 8 In this embodiment, the accommodating groove 212 and the push rod 230 extend along the horizontal direction, and the slot 292 of the accommodating groove 212 is located on the peripheral wall of the water tank 210. The portable coffee machine of this embodiment provides hot water by side pressing.

[0055] As can be seen from the above, by providing the inner guide rod on the water tank, the push rod is sleeved outside the inner guide rod and is in sliding connection with the inner guide rod, the elastic return member is sleeved outside the push rod and is in sealing connection with the inner peripheral wall of the push rod through the outer peripheral wall of the inner guide rod, so as to apply positive pressure or negative pressure to the communication cavity when the push rod moves relative to the inner guide rod. Since the push rod is sleeved outside the inner guide rod, there is no need to provide a piston, and there is no problem that the piston is separated from the push rod due to the opposite directions of the force of the elastic return member acting on the push rod and the friction force acting on the piston in the prior art. In addition, by the cooperation of the guide groove and the guide protrusion, the user can stably press the push rod, and the stability of the movement of the push rod is ensured. By providing the locking groove at the end of the guide groove, after the user applies an axial force to the push rod through the pressing part, the push rod drives the guide protrusion to move along the guide groove until the guide protrusion is opposite to the locking groove. The locking of the push rod is achieved by rotating when being pressed to the limit position. In this way, there is no need to provide a locking structure at the end of the push rod, the push rod can be better hidden when the coffee machine is not used, and miniaturization and improved aesthetics can be achieved, and the problem of accidental touch caused by the long push rod located outside the coffee machine is solved. In addition, the guide protrusion and the guide groove are in sliding cooperation in the moving direction of the push rod, and the end wall of the guide groove can be in limiting cooperation with the guide protrusion to prevent the pressing assembly from falling off the water tank.

[0056] Finally, it should be emphasized that the above is only a preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A portable coffee maker, comprising: a water tank, a water storage cavity being arranged in the water tank; a coffee brewing seat, a coffee brewing cavity being arranged in the coffee brewing seat; a pressure applying assembly, the water tank being provided with a receiving groove, an opening of the receiving groove being located on an outer wall of the water tank, the pressure applying assembly being installed in the receiving groove, the pressure applying assembly being movable between an extended position and a retracted position, the pressure applying assembly being forced by a force to supply water in the water storage cavity to the coffee brewing cavity; characterized in that: the pressure applying assembly comprises a push rod, an inner guide rod and an elastic return member, the push rod and the inner guide rod are coaxially arranged, the push rod is sleeved outside the inner guide rod and is in sliding fit with the inner guide rod in the axial direction of the push rod, the elastic return force of the elastic return member forces the push rod to move towards the extended position, an axial end of the push rod is provided with a pressure applying part, the pressure applying part can extend out of the opening; the portable coffee maker further comprises a supporting sleeve, the supporting sleeve is fixed in the receiving groove, a guide groove extending along the axial direction of the supporting sleeve is formed in a cylinder wall of the supporting sleeve, the push rod is provided with a guide protrusion, the push rod is installed in the supporting sleeve, the guide protrusion extends into the guide groove and is in sliding fit with the guide groove, an end of the guide groove away from the pressure applying part is provided with a locking groove, the locking groove extends along the circumferential direction of the supporting sleeve and communicates with the guide groove; after the pressure applying part is subjected to a force along the axial direction of the push rod, the push rod drives the guide protrusion to move along the guide groove until the guide protrusion is opposite to the locking groove, at this time, after the pressure applying part is subjected to a force along the circumferential direction of the push rod, the push rod drives the guide protrusion to enter the locking groove.

2. The portable coffee maker according to claim 1, characterized in that: a communication cavity is arranged between the water storage cavity and the coffee brewing cavity, the water storage cavity and the coffee brewing cavity communicate through the communication cavity, the water storage cavity communicates with the communication cavity through a water inlet valve, the communication cavity communicates with the coffee brewing cavity through a water outlet valve; the inner guide rod is provided with a guide rod channel penetrating along the length direction, the guide rod channel communicates with the communication cavity, the guide rod channel communicates with an inner cavity of the push rod, an outer peripheral wall of the inner guide rod is in sealing connection with an inner peripheral wall of the push rod; after the pressure applying part is subjected to a force, the push rod moves towards the communication cavity and applies positive pressure to the communication cavity to open the water outlet valve; after the force applied to the pressure applying part is removed, the elastic return member forces the push rod to move towards a direction away from the communication cavity under the action of the elastic restoring force of the elastic return member, the push rod applies negative pressure to the communication cavity to open the water inlet valve.

3. The portable coffee maker according to claim 2, characterized in that: the portable coffee maker further comprises a valve seat, the communication cavity is located in the valve seat, the water inlet valve and the water outlet valve are arranged on the valve seat, the supporting sleeve, the valve seat and the water tank are fixedly connected. The support sleeve is provided with a limiting groove at one end close to the valve seat, and the inner guide rod is provided with a limiting protrusion on the peripheral wall, which is located in the limiting groove and is limited in the axial direction of the inner guide rod.

4. The portable coffee maker according to claim 3, characterized in that: The portable coffee maker further comprises a first sealing member sleeved on the outer peripheral wall of the inner guide rod; The valve seat is provided with a guide rod positioning groove, one end of the inner guide rod extends into the guide rod positioning groove, and the first sealing member is pressed between the outer peripheral wall of the inner guide rod and the groove wall of the guide rod positioning groove.

5. The portable coffee maker according to any one of claims 2 to 4, characterized in that: The pressure applying assembly further comprises a second sealing member, which is sleeved on one end of the inner guide rod away from the communication cavity and is pressed between the outer peripheral wall of the inner guide rod and the inner peripheral wall of the push rod.

6. The portable coffee maker according to any one of claims 1 to 4, characterized in that: The push rod comprises coaxially arranged inner and outer sleeves, and the inner sleeve and the outer sleeve surround a mounting cavity therebetween, and the elastic return member is sleeved outside the inner sleeve and located in the mounting cavity; The outer sleeve is provided with a cantilever, and the guide protrusion is located at the free end of the cantilever; When the end wall of the inner sleeve abuts against the support sleeve, the guide protrusion and the locking groove are opposite in the circumferential direction of the support sleeve.

7. The portable coffee maker according to claim 6, characterized in that: The number of the cantilevers, the guide protrusions, the guide grooves and the locking grooves is more than two, and the cantilevers, the guide protrusions, the guide grooves and the locking grooves correspond one by one; Each of the cantilevers is arranged along the circumferential direction of the outer sleeve, each of the guide grooves is arranged along the circumferential direction of the support sleeve, each of the locking grooves is arranged along the circumferential direction of the support sleeve, one of the locking grooves communicates with one of the guide grooves, and each of the locking grooves is located on the same side of the corresponding guide groove in the circumferential direction of the support sleeve.

8. The portable coffee maker according to claim 6, characterized in that: The inner sleeve is provided with a guide sleeve, the peripheral wall of the guide sleeve is attached to the inner peripheral wall of the inner sleeve, the inner guide rod is in sliding cooperation with the guide sleeve, and the guide sleeve is made of a metal material; or The inner peripheral wall of the inner sleeve is provided with a wear-resistant layer, and the inner guide rod is in sliding cooperation with the wear-resistant layer.

9. The portable coffee maker according to any one of claims 1 to 4, characterized in that: The coffee brewing seat is arranged below the water tank; The accommodating groove and the push rod both extend along the vertical direction, and the groove opening of the accommodating groove is located at the top of the water tank; or The accommodating groove and the push rod both extend along the horizontal direction, and the groove opening of the accommodating groove is located on the peripheral wall of the water tank.

10. The portable coffee maker according to any one of claims 1 to 4, characterized in that: When the pressure applying assembly is in the retracted position, the pressure applying part is close to the outer wall of the water tank.

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