CN210493813U - Bean grinder - Google Patents

Abstract

The embodiment of the utility model provides a bean grinder, which comprises a grinder body, a bean grinding cup and a safety protection mechanism, wherein the grinder body comprises a first connecting part and a second connecting part, and the first connecting part is used for being connected with an external driving device; the safety protection mechanism comprises a telescopic component and a safety button which are arranged on the machine body, wherein the first end of the telescopic component can extend out of the first connecting part so as to interfere the connection between the first connecting part and the external driving device; the safety button can stop the telescopic component to limit the retraction of the first end of the telescopic component; the bean grinding cup is provided with a trigger component, is connected with the second connecting part and triggers the safety button through the trigger component, so that the safety button moves to remove the limitation on the telescopic component, the first end of the telescopic component can retract and remove the interference, the safety protection function is realized through a mechanical safety protection mechanism, and the potential safety hazard is low.

Description

Bean grinder

Technical Field

The embodiment of the utility model provides a relate to domestic appliance technical field, especially relate to a bean grinder.

Background

Along with the improvement of living standard of people, people have higher and higher requirements on the drinking quality of coffee, more and more people select to grind coffee beans before drinking in order to avoid the taste change of coffee powder, and the bean grinder is applied more and more widely.

The bean grinding machine in the prior art is usually provided with a driving device and drives a bean grinding mechanism to operate through the driving device, for example, the Chinese utility model patent with the authorization publication number of CN 208463788 discloses a bean grinding device which comprises a bean grinding mechanism, a driving mechanism, a transmission mechanism and a support, wherein the bean grinding mechanism comprises a bean grinding cabin body and a grinding assembly; the driving mechanism is used for providing power; the transmission mechanism is arranged on the bean grinding bin body and used for transmitting the power of the driving mechanism to the grinding assembly. However, the bean grinder with the driving device has high cost, and various different household appliances are respectively provided with the driving device, so that resource waste is easily caused.

There is another prior art bean grinder which drives the bean grinding mechanism to operate by an external driving device. For example, the bean grinder can comprise a support, a bean grinding mechanism and a transmission mechanism arranged in the support, wherein the input end of the transmission mechanism is used for being connected with an external driving device, and the bean grinding mechanism can be connected with the output end of the transmission mechanism after being placed on the support.

However, in any kind of bean grinder, in consideration of convenience in cleaning and use, the support is usually provided with an installation position such as an installation groove or a clamping interface, an output shaft of the transmission mechanism is usually exposed on the installation position, and the bean grinding mechanism is detachably installed on the installation position and can be in transmission connection with the transmission mechanism after being installed. Such a configuration is prone to injury to the user if the output shaft of the transmission mechanism is rotated in the event that the grinding mechanism is not installed or is improperly installed. For safety reasons, the prior art bean grinding machine usually needs to be provided with a safety protection device such as a microswitch for controlling the on-off of the driving device, so as to avoid that the driving device drives the transmission mechanism to rotate to hurt a user under the condition that the bean grinding mechanism is not installed or is not installed correctly. However, such safety devices are not suitable for use in a bean grinder with an external drive, since they do not have their own drive.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problem that exists among the prior art, the embodiment of the utility model provides a bean grinder makes it realize the safety protection function through mechanical type safety protection mechanism.

In order to solve the above problem, the embodiment of the present invention provides a technical solution:

a bean grinding machine comprises a machine body and a bean grinding cup, wherein the machine body comprises a first connecting part and a second connecting part, and the first connecting part is used for being connected with an external driving device; the bean grinder also comprises a safety protection mechanism;

the safety protection mechanism comprises a telescopic component and a safety button which are arranged on the machine body, wherein a first end of the telescopic component can extend out of the first connecting part so as to interfere the connection between the first connecting part and the external driving device; the safety button is capable of stopping the retractable member to limit retraction of the first end of the retractable member;

the bean grinding cup is provided with a trigger component, the bean grinding cup is connected with the second connecting portion and triggers the safety button through the trigger component, so that the safety button moves to remove the limitation on the telescopic component, and the first end of the telescopic component can retract and remove the interference. This grind beans machine has realized the safety protection function through mechanical type safety protection mechanism, and the potential safety hazard is lower, makes this mill beans machine of user's use that can be safe, relieved.

In some embodiments, an avoidance slot is provided on the safety button; when dodging the groove with when the second end of extensible part staggers, safety button can backstop extensible part's second end is worked as it is just right to dodge the groove during extensible part's second end, can hold extensible part's second end stretches into, so that extensible part's first end withdrawal and relieving the interference. The stopping or avoiding is realized by staggering or aligning the second ends of the avoiding groove and the telescopic part, the structure is simple, the realization is easy, and the reliability is higher.

In some embodiments, the safety shield mechanism further comprises a first reset feature for applying a reset spring force to the safety button to reset the safety button to a position to stop the retractable feature when the trigger feature is disengaged from the safety button; and/or

The safety protection mechanism further comprises a second reset component, and the second reset component is used for applying reset elastic force to the telescopic component to enable the telescopic component to extend out of the first connecting part.

Therefore, when the triggering component does not trigger the safety button, the safety button can be kept at the position where the stop scatters the telescopic component, and after the triggering component triggers the safety button and is separated from the safety button, the safety button can be automatically reset to the first position, so that the safety protection effect of the safety protection mechanism is improved. After external drive arrangement and first connecting portion disconnection, the first end of extensible part can stretch out from first connecting portion automatically to interfere external drive arrangement and first connecting portion again, is of value to the safety protection effect that improves this safety protection mechanism.

In some embodiments, a transmission mechanism and a bean grinding mechanism are arranged in the machine body, the transmission mechanism is in transmission connection with the first connecting portion and the bean grinding mechanism, and a feeding port of the bean grinding mechanism forms the second connecting portion.

In some embodiments, the second end of the telescoping member is provided with a first locking portion;

the trigger component is provided with a second locking part;

when the first end of the telescopic component retracts and the interference is removed, the first locking part is locked with the second locking part to limit the bean grinding cup to be separated from the second connecting part. When the first end of the telescopic component retracts and interference is relieved, the first locking part and the second locking part are matched and locked with each other to lock the bean grinding cup and the second connecting part, the bean grinding cup is prevented from being taken down from the second connecting part when the external driving device is kept connected with the first connecting part, and the possibility that a user is injured due to misoperation is absolutely avoided.

In some embodiments, the first locking portion is a locking tongue portion disposed at the second end of the telescopic member, the second locking portion is a locking groove disposed on the trigger member, and the locking tongue portion is in clamping connection with the locking groove to lock the telescopic member and the trigger member. The locking function is realized through the locking tongue part and the locking groove, the structure is simple, the realization is easy, and the reliability is higher.

In some embodiments, the retractable part includes a retractable rod and a bayonet lock, the retractable rod is telescopically arranged in the body, the bayonet lock is arranged along a direction perpendicular to the length direction of the retractable rod, one end of the bayonet lock is connected with the second end of the retractable rod, and the other end of the bayonet lock extends towards the direction of the safety button and forms the lock tongue portion. The telescopic component is ingenious in structural design and convenient to assemble and process.

In some embodiments, a connector, a bracket and a fixing plate are arranged in the machine body, one end of the connector extends out of the machine body and forms the second connecting portion, the bracket is connected with the other end of the connector, the fixing plate is arranged on one side of the bracket, which faces away from the connector, the safety button is connected with the fixing plate in a sliding mode, and the telescopic rod sequentially penetrates through the connector, the bracket and the fixing plate and is connected with the clamping pin. The internal structure of the machine body is reasonable in design, convenient to assemble and process and beneficial to improving the production efficiency.

In some embodiments, the bean grinding cup is screwed on the second connecting portion, the locking groove is a notched groove arranged at the free end of the trigger component, and the locking tongue portion is clamped in the notched groove to limit the trigger component from rotating away.

In some embodiments, the safety button is arranged in the machine body, and a triggering opening for turning in the triggering component is formed in the machine body at a position corresponding to the safety button; and/or

And a guide inclined plane is arranged on one side of the safety button, which is close to the turning-in side of the trigger component. The safety button is arranged in the machine body, so that the safety button can be prevented from being triggered by mistake. The guide inclined plane can enable the trigger component to smoothly trigger the safety button, and blockage is avoided.

Compared with the prior art, the utility model discloses beneficial effect lies in:

the utility model discloses grind beans machine, when grinding the beans cup and not installing or not installing correctly, under the interference of the first end of extensible part, external drive device can't be connected with first connecting portion, can avoid damaging the user because of the maloperation, has realized the safety protection function through mechanical type safety protection mechanism, and the potential safety hazard is lower, makes this mill beans machine of use that the user can be safe, relieved.

Drawings

Fig. 1 is a schematic structural view of a triggering part of a bean grinder according to an embodiment of the present invention when a safety button is not triggered;

fig. 2 is a schematic structural diagram of a triggering component of the bean grinder according to the embodiment of the present invention when the triggering component triggers the safety button;

fig. 3 and 4 are schematic partial structural diagrams of different viewing angles when the triggering component of the bean grinder of the embodiment of the invention triggers the safety button respectively;

FIG. 5 is a schematic view of an exploded structure of a bean grinder according to an embodiment of the present invention;

fig. 6 is a schematic sectional structure view of a partial structure of a bean grinder according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a safety button of the bean grinder according to the embodiment of the present invention;

fig. 8 is a schematic structural view of a telescopic rod of the bean grinder according to the embodiment of the present invention;

fig. 9 is a schematic structural view of a bayonet lock of a bean grinder according to an embodiment of the present invention;

fig. 10 is a schematic view of a part of the structure of the machine body of the bean grinder according to the embodiment of the present invention.

Description of reference numerals:

1-body; 2-a transmission mechanism; 3-grinding the bean cup; 4-a first connection; 5-a second connecting portion; 6-a telescopic member; 7-safety button; 8-a trigger member; 9-avoidance groove; 10-a first restoring member; 11-a second return member; 12-a connector; 13-a scaffold; 14-a fixed plate; 15-a telescopic rod; 16-bayonet lock; 17-a tongue portion; 18-locking groove; 19-a trigger port; 20-a lead-in ramp; 21-an input shaft; 22-bean grinding mechanism.

Detailed Description

For better understanding of the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 5, an embodiment of the present invention provides a bean grinder, which can be used for grinding coffee powder, soybean powder, sesame powder, etc., and includes a grinder body 1, a bean grinding cup 3 and a safety protection mechanism, wherein the grinder body 1 includes a first connection portion 4 and a second connection portion 5, the first connection portion 4 is used for being connected with an external driving device, the external driving device can be an external driving motor arranged separately, and can also be a kitchen electrical appliance having a driving device, such as a chef machine, a juice extractor, a blender, etc. matched with the bean grinder; the second connecting part 5 is used for connecting the bean grinding cup 3; the safety protection mechanism comprises a telescopic part 6 and a safety button 7 which are arranged on the machine body 1, wherein a first end of the telescopic part 6 can extend out from the first connecting part 4 so as to interfere the connection of the first connecting part 4 and an external driving device, as shown in figure 1; the safety button 7 is capable of stopping the telescopic member 6 to limit the retraction of the first end of the telescopic member 6; the grinding cup 3 has a trigger member 8, the grinding cup 3 is connected to the second connecting portion 5, and the safety button 7 is triggered by the trigger member 8 to move the safety button 7 to release the restriction of the extendable member 6 and to enable the first end of the extendable member 6 to retract and release the interference, as shown in fig. 2-4.

With the bean grinder with the structure, when the bean grinding cup 3 is not installed or is not installed correctly, if the bean grinding cup 3 is not connected with the second connecting part 5, or although the bean grinding cup 3 is connected with the second connecting part 5, the triggering part 8 does not trigger the safety button 7, the external driving device cannot be connected with the first connecting part 4 under the interference of the first end of the telescopic part 6, and the damage to a user due to misoperation can be avoided, when the bean grinding cup 3 is installed correctly, namely the bean grinding cup 3 is connected with the second connecting part 5 and the triggering part 8 triggers the safety button 7, the safety button 7 moves and removes the limitation on the telescopic part 6, the first end of the telescopic part 6 can retract and remove the interference, and as shown in fig. 2-4, the external driving device can be connected with the first connecting part 4 and drive the bean grinding cup 3 to operate. This grind beans machine has realized the safety protection function through mechanical type safety protection mechanism, and the potential safety hazard is lower, makes this mill beans machine of user's use that can be safe, relieved.

As shown in fig. 5, in some embodiments, a transmission mechanism 2 and a bean grinding mechanism 22 may be disposed in the machine body 1, the transmission mechanism 2 is in transmission connection with the first connection portion 4 and the bean grinding mechanism 22, and a feeding port of the bean grinding mechanism 22 forms the second connection portion 5, so that the external driving device can drive the bean grinding mechanism 22 through the transmission mechanism 2, the bean grinding cup 3 is used for containing food materials to be ground, and the food materials gradually enter the bean grinding mechanism 22 through the feeding port during bean grinding. Of course, organism 1 also can only be provided with drive mechanism 2, so drive mechanism 2 transmission is connected first connecting portion 4 and second connecting portion 5, grinds beans cup 3 not only can the splendid attire treat the crocus and eat the material, can also grind beans processing, and outside drive arrangement grinds beans cup 3 through drive mechanism 2 drive and grinds beans processing.

As shown in fig. 5 and 7, in some embodiments, the safety button 7 is provided with an avoiding groove 9, and the safety button 7 has a first position and a second position, in the first position, the avoiding groove 9 is offset from the second end of the retractable member 6, in this case, the second end of the retractable member 6 abuts against other parts of the safety button 7, and the safety button 7 can stop the second end of the retractable member 6 to limit the retraction of the first end of the retractable member 6. Under the pushing of the trigger part 8, the safety button 7 can be switched from the first position to the second position, and at this time, the avoiding groove 9 faces the second end of the telescopic part 6 and can accommodate the second end to extend into, so that the first end of the telescopic part 6 can retract from the first connecting part 4, and the interference between the external driving device and the first connecting part 4 is relieved, and the external driving device can be connected with the first connecting part 4. Specifically, as shown in fig. 5 and fig. 6, a connector 12, a bracket 13 and a fixing plate 14 may be disposed in the machine body 1, one end of the connector 12 extends out of the machine body 1 for being connected with a driving device, the transmission mechanism 2 may include an input shaft 21, an output shaft and a gear set connected between the input shaft 21 and the output shaft, the input shaft 21 of the transmission mechanism 2 may penetrate through the connector 12 and extend out from one end of the connector 12, the output shaft of the transmission mechanism 2 is connected with a bean grinding mechanism 22, the bracket 13 is connected with the other end of the connector 12, the fixing plate 14 is disposed on one side of the bracket 13, which faces away from the connector 12, and the safety button 7 is slidably connected with the fixing plate 14. The telescopic part 6 may include a telescopic rod 15, and the telescopic rod 15 sequentially penetrates the connector 12, the bracket 13 and the fixing plate 14. The first end of the telescopic rod 15 can extend out from one end of the connecting head 12, and the second end of the telescopic rod 15 corresponds to the avoiding groove 9. It should be noted that the connection structure of the internal structure of the machine body 1, the transmission mechanism 2, the bean grinding mechanism 22, the retractable part 6 and the safety button 7 is not limited to the above manner, and can be adaptively adjusted according to the specific structure of the bean grinding machine, as long as the above safety protection function can be realized through the cooperation of the retractable part 6, the safety button 7 and the trigger part 8.

In some embodiments, the safety shield mechanism may further comprise a first reset device 10, the first reset device 10 being adapted to apply a reset spring force to the safety button 7 to enable the safety button 7 to automatically reset from the second position to the first position when the trigger device 8 is disengaged from the safety button 7. In this way, it is ensured that, when the triggering member 8 does not trigger the safety button 7, the safety button 7 is always in the first position and stops the telescopic member 6, so that the first end of the telescopic member 6 is always in the interference state; after the triggering part 8 triggers the safety button 7 and is separated from the safety button 7, the safety button 7 can automatically reset to the first position, and the safety protection effect of the safety protection mechanism is improved beneficially. The first restoring member 10 may be a restoring spring disposed at the bottom of the safety button 7, for example, two coil springs may be symmetrically disposed at the bottom of the safety button 7 in a compressed state so that the coil springs can apply an upward restoring elastic force to the safety button 7.

In some embodiments, the safety shield mechanism may further comprise a second restoring member 11, the second restoring member 11 being configured to apply a restoring spring force to the retractable member 6 to extend the first connecting portion 4. In this way, after the external driving device is disconnected from the first connecting portion 4, the first end of the extensible member 6 can automatically extend from the first connecting portion 4 and re-interfere with the external driving device and the first connecting portion 4. Specifically, the second restoring member 11 may also be a restoring spring, the restoring spring may be sleeved on the telescopic rod 15, the middle portion of the telescopic rod 15 may be provided with an annular rib, one end of the restoring spring may abut against the bracket 13, and the other end of the restoring spring may abut against the annular rib.

With the cooperation of the safety button 7 and the telescopic member 6, it is possible to prevent the external drive means from being connected to the first connecting portion 4 when the grinding cup 3 is not mounted or not mounted correctly. In order to further improve the safety protection effect of the bean grinder, the potential safety hazard caused by the detachment of the bean grinding cup 3 from the machine body 1 when the external driving device is connected with the first connecting part 4 is avoided. In some embodiments, the second end of the telescopic member 6 may be provided with a first locking portion and the trigger member 8 may be provided with a second locking portion, and the telescopic member 6 and the trigger member 8 are configured such that when the first end of the telescopic member 6 is retracted from the first connecting portion 4, the first locking portion is locked with the second locking portion, thereby locking the second end of the telescopic member 6 with the trigger member 8 and thereby restricting the grinding cup 3 from being disengaged from the second connecting portion 5. Like this, when the first end of extensible part 6 withdrawed and relieved the interference, bean grinding cup 3 and second connecting portion 5 had been locked in the cooperation of first locking portion and second locking portion, the user only unloads external drive device earlier, and make the first end of extensible part 6 stretch out the back, first locking portion and second locking portion can unblock, bean grinding cup 3 can take off from second connecting portion 5, bean grinding cup 3 takes off from second connecting portion 5 when avoiding external drive device to keep being connected with first connecting portion 4, the possibility of injury to the user has absolutely been avoided.

In some embodiments, the first locking portion may be a locking tongue 17 provided on the second end of the telescopic member 6 and the second locking portion may be a locking groove 18 provided on the trigger member 8. After the bean grinding cup 3 is connected with the second connecting part 5, the triggering part 8 pushes the safety button 7, and under the pushing action of the external driving device, the locking tongue part 17 on the second end of the telescopic part 6 can be clamped in the locking groove 18 to limit the triggering part 8 from being disengaged. In this way, the bean grinding cup 3 cannot be detached from the second connecting portion 5 due to the lock of the locking tongue 17, and the bean grinding cup 3 can be detached from the second connecting portion 5 only after the locking tongue 17 is disengaged from the locking groove 18.

As shown in fig. 6, 8 and 9, in some embodiments, the retractable member 6 may include a retractable rod 15 and a locking pin 16, the retractable rod 15 is telescopically disposed in the body 1, the locking pin 16 is disposed perpendicular to the length direction of the retractable rod 15, one end of the locking pin 16 is connected to the second end of the retractable rod 15, and the other end of the locking pin 16 extends toward the safety button 7 and forms a locking tongue 17. Like this, when trigger part 8 pushes safety button 7 to the second position, dodge groove 9 on the safety button 7 just to the second end of telescopic link 15, and locking groove 18 on the trigger part 8 just is to the spring bolt portion 17 on bayonet 16, and telescopic link 15 withdrawal under the external force top, the second end of telescopic link 15 stretches into dodges in the groove 9, and spring bolt portion 17 stretches into locking groove 18, has locked grinding bean cup 3 and second connecting portion 5 when relieving the interference.

In some embodiments, the bean grinding cup 3 can be screwed on the second connecting portion 5, the locking groove 18 can be a notched groove disposed at the end of the trigger member 8, and the latch 17 can be snapped in the notched groove to limit the trigger member 8 from rotating away. In order to avoid the interference of the retractable member 6 to the external driving device caused by the safety button 7 being exposed outside the body 1 and being triggered by mistake, the safety button 7 may be disposed inside the body 1, and a triggering opening 19 for turning the triggering member 8 in is disposed on the body 1 corresponding to the safety button 7, as shown in fig. 10, so that the user cannot directly contact the safety button 7 during normal use, and the phenomenon of false triggering can be avoided. In order to facilitate the smooth pushing of the safety button 7 by the trigger member 8 when the bean grinding cup 3 is screwed with the second connecting portion 5, a guiding inclined surface 20 may be further provided at a side of the safety button 7, which is close to the turning of the trigger member 8, as shown in fig. 7.

The structure that this grind beans cup 3 and revolve on second connecting portion 5 can have multiple form, if can set up first joint portion on second connecting portion 5 to set up second joint portion in the bottom of grinding beans cup 3, after the bottom of grinding beans cup 3 meets and rotates to first direction with second connecting portion 5, first joint portion can with second joint portion block, and at this moment trigger part 8 triggers safety button 7 just. In a preferred embodiment, the second connecting portion 5 may be a groove disposed at the top of the machine body 1, the first clamping portion may be an L-shaped groove disposed on a side wall of the groove, the top of the L-shaped groove is open, the second clamping portion may be a protrusion disposed on an outer wall of the bottom of the bean grinding cup 3, when the protrusion is opposite to the opening of the L-shaped groove, the bottom of the bean grinding cup 3 can extend into the groove, and the protrusion can extend into the L-shaped groove along a vertical portion of the L-shaped groove, when the protrusion extends into the bottom of the L-shaped groove, the bean grinding cup 3 is rotated clockwise, and the protrusion can move along a lateral portion of the L-shaped groove and be engaged with the L-shaped groove. Of course, the bean grinding cup 3 and the second connecting part 5 can be screwed together by using a thread structure or other structures.

The utility model discloses grind beans machine, when grinding beans cup 3 and not installing or incorrect installation, external drive device is under the interference of the first end of extensible part 6, can't be connected with first connecting portion 4, can avoid damaging the user because of the maloperation, has realized the safety protection function through mechanical type safety protection mechanism, and the potential safety hazard is lower, makes this mill beans machine of use that the user can be safe, relieved.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims (10)

1. A bean grinding machine comprises a machine body and a bean grinding cup, wherein the machine body comprises a first connecting part and a second connecting part, and the first connecting part is used for being connected with an external driving device; the bean grinder is characterized by further comprising a safety protection mechanism;

the safety protection mechanism comprises a telescopic component and a safety button which are arranged on the machine body, wherein a first end of the telescopic component can extend out of the first connecting part so as to interfere the connection between the first connecting part and the external driving device; the safety button is capable of stopping the retractable member to limit retraction of the first end of the retractable member;

the bean grinding cup is provided with a trigger component, the bean grinding cup is connected with the second connecting portion and triggers the safety button through the trigger component, so that the safety button moves to remove the limitation on the telescopic component, and the first end of the telescopic component can retract and remove the interference.

2. The bean grinder of claim 1, wherein the safety button is provided with an avoidance groove; when dodging the groove with when the second end of extensible part staggers, safety button can backstop extensible part's second end is worked as it is just right to dodge the groove during extensible part's second end, can hold extensible part's second end stretches into, so that extensible part's first end withdrawal and relieving the interference.

3. The bean grinder of claim 1, wherein the safety guard mechanism further comprises a first reset member for applying a reset spring force to the safety button to reset the safety button to a position to stop the retractable member when the trigger member is disengaged from the safety button;

the safety protection mechanism further comprises a second reset component, and the second reset component is used for applying reset elastic force to the telescopic component to enable the telescopic component to extend out of the first connecting part.

4. The bean grinder according to claim 1, wherein a transmission mechanism and a bean grinding mechanism are arranged in the machine body, the transmission mechanism is in transmission connection with the first connecting portion and the bean grinding mechanism, and a feeding port of the bean grinding mechanism forms the second connecting portion.

5. A bean grinding machine according to claim 1, characterized in that the second end of the telescopic member is provided with a first locking portion;

the trigger component is provided with a second locking part;

when the first end of the telescopic component retracts and the interference is removed, the first locking part is locked with the second locking part to limit the bean grinding cup to be separated from the second connecting part.

6. A bean grinding machine according to claim 5, characterized in that the first locking part is a locking tongue provided at the second end of the telescopic member and the second locking part is a locking groove provided on the trigger member, the locking tongue being snap-fitted with the locking groove to lock the telescopic member and the trigger member.

7. A bean grinder as claimed in claim 6, wherein the telescopic part comprises a telescopic rod telescopically arranged in the housing and a bayonet lock arranged in a direction perpendicular to the length of the telescopic rod, one end of the bayonet lock being connected to the second end of the telescopic rod, the other end of the bayonet lock extending towards the safety button and forming the latch portion.

8. The bean grinder according to claim 7, wherein a connector, a bracket and a fixing plate are arranged in the machine body, one end of the connector extends out of the machine body and forms the second connecting portion, the bracket is connected with the other end of the connector, the fixing plate is arranged on one side of the bracket, which faces away from the connector, the safety button is slidably connected with the fixing plate, and the telescopic rod sequentially penetrates through the connector, the bracket and the fixing plate and is connected with the clamping pin.

9. A bean grinder as claimed in claim 6, wherein the grinding cup is screwed onto the second connecting portion, the locking groove is a notched groove provided at a free end of the trigger member, and the locking tongue is snapped into the notched groove to restrict the trigger member from rotating away.

10. The bean grinder according to claim 9, wherein the safety button is arranged in the machine body, and a triggering port for turning in the triggering component is arranged on the machine body at a position corresponding to the safety button; and/or

And a guide inclined plane is arranged on one side of the safety button, which is close to the turning-in side of the trigger component.

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