CN213405388U

CN213405388U - Multifunctional kitchen storage cabinet

Info

Publication number: CN213405388U
Application number: CN202020689127.XU
Authority: CN
Inventors: 胡杰敏; 叶灵波
Original assignee: Pujiang Yikeyou Household Products Co ltd
Current assignee: Pujiang Yikeyou Household Products Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-06-11
Anticipated expiration: 2030-04-29

Abstract

The utility model relates to a kitchen ware, and discloses a multifunctional kitchen storage cabinet, wherein a containing space is arranged between a main storage cabinet and a chopstick cabinet, a main ventilation hole and a chopstick ventilation hole are respectively arranged on the side wall of the main storage cabinet opposite to the chopstick cabinet, and a fan positioned between the main ventilation hole and the chopstick ventilation hole is arranged in the containing space; the main light-transmitting hole and the chopstick light-transmitting hole are respectively formed in the side wall, opposite to the main storage cabinet and the chopstick cabinet, of the main storage cabinet, and ultraviolet lamps are respectively installed in the main light-transmitting hole and the chopstick light-transmitting hole; the fan can keep the ventilation of the main accommodating groove of the main accommodating cabinet and the chopstick accommodating groove of the chopstick cabinet at the same time, so that the risk of the accommodated tableware of being damped and mildewed is reduced; the two ultraviolet lamps can respectively carry out ultraviolet sterilization and disinfection on the tableware in the main containing groove and the chopstick containing groove, and the sanitation of the contained tableware is further ensured.

Description

Multifunctional kitchen storage cabinet

Technical Field

The utility model relates to a kitchen utensils and appliances especially relate to multi-functional kitchen storage cabinet.

Background

It is known that kitchen utensils, in particular household kitchen utensils, such as chopsticks, slice, etc., are subjected to moisture after cleaning. These wet appliances with moisture are generally placed in a place where there is no sunlight and ventilation in a kitchen, and are easily infested with mold and pathogenic bacteria harmful to the human body due to the influence of damp weather such as rainy weather. When the utensil is used next time, people habitually take the utensil with the mould and the pathogenic bacteria for direct use, which causes the food made by the utensil, such as fruits, cooked food without taking a pot, and the like, to be stained with the mould and the pathogenic bacteria invisibly, and people can easily cause symptoms of belly pulling, gastroenteritis and the like after eating the food with the mould and the pathogenic bacteria. Therefore, a multifunctional kitchen storage appliance is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's shortcoming, provide a cabinet is accomodate in multi-functional kitchen, can effectively accomodate kitchen utensils such as chopsticks, slice, can disinfect the disinfection to the kitchen utensil of accomodating again.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a multifunctional kitchen storage cabinet comprises a cabinet body, wherein the cabinet body comprises a main storage cabinet and a chopstick cabinet arranged on one side of the main storage cabinet, a main storage groove is formed in the side surface of the main storage cabinet, and a chopstick storage groove is formed in the side surface of the chopstick cabinet; an accommodating space is arranged between the main accommodating cabinet and the chopstick cabinet, the side wall of the main accommodating cabinet opposite to the chopstick cabinet is respectively provided with a main vent hole and a chopstick vent hole, and a fan positioned between the main vent hole and the chopstick vent hole is arranged in the accommodating space; the main light-transmitting hole and the chopstick light-transmitting hole are respectively formed in the side wall, opposite to the chopstick cabinet, of the main storage cabinet, and ultraviolet lamps are respectively installed in the main light-transmitting hole and the chopstick light-transmitting hole.

Preferably, the side of the cabinet body is provided with a drawing groove close to the bottom, the drawing groove is simultaneously positioned below the main storage cabinet and the chopstick cabinet, the bottom of the main storage cabinet and the bottom of the chopstick cabinet are respectively provided with a main water leakage hole and a chopstick water leakage hole, the main water leakage hole and the chopstick water leakage hole are both communicated with the drawing groove, and a water receiving box is inserted in the drawing groove.

Preferably, the bottom of the water receiving box is provided with a holding groove.

Preferably, the main cabinet door covering the main storage groove is pivoted on the main storage cabinet, a first magnetic part is arranged at the edge of one side of the main cabinet door, and a second magnetic part for magnetically adsorbing the first magnetic part is arranged at the edge of the corresponding side of the main storage groove.

Preferably, the outer side surface of the main cabinet door is provided with a holding piece.

Preferably, the cover closing surface of the main cabinet door is provided with an induction magnetic part at one side edge, a magnetic induction proximity sensor is embedded in the corresponding side edge of the main accommodating groove to detect the approaching or the departing of the induction magnetic part, the magnetic induction proximity sensor is coupled with a control circuit, and the ultraviolet lamp and the fan are both coupled and controlled by the control circuit.

As preferred, the inner wall of the main storage groove is provided with a plurality of hook components, and each hook component comprises an installation plate, a hook arranged on the plate surface on one side of the installation plate, a buckle arranged on the plate surface on the other side of the installation plate, and a buckling groove arranged on the inner wall of the main storage groove and used for buckling the buckle.

Preferably, a chopstick cabinet door is covered at the opening of the chopstick accommodating groove, a receiving box is arranged on the inner side surface of the chopstick cabinet door and at the bottom of the chopstick cabinet door, and two side surfaces of the receiving box are respectively pivoted to two inner side walls of the chopstick accommodating groove.

Preferably, both sides of the receiving box are provided with pivoting assemblies, each pivoting assembly comprises an arc-shaped guide rail arranged at an opening on the inner side wall of the chopstick accommodating groove, each arc-shaped guide rail is arranged at the bottom of the chopstick accommodating groove, and a sliding block connected to the outer circumferential surface of each arc-shaped guide rail in a sliding manner is fixed on the outer side wall of the receiving box; the inner side wall of the chopstick accommodating groove is provided with an arc-shaped limiting strip above the arc-shaped guide rail, and a sliding interval for sliding and clamping the sliding block is kept between the arc-shaped limiting strip and the arc-shaped guide rail; a baffle plate is arranged at the opening position of the chopstick accommodating groove at the sliding interval.

Preferably, the outer circumferential surface of the arc-shaped guide rail is provided with a limiting salient point, and the sliding surface of the sliding block is provided with a limiting groove for clamping the limiting salient point.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the cabinet body integrates a main containing cabinet and a chopstick cabinet at the same time, and can be used for containing a slice and chopsticks respectively, so that the containing logic is clearer and more reasonable; the fan can keep the ventilation of the main accommodating groove of the main accommodating cabinet and the chopstick accommodating groove of the chopstick cabinet at the same time, so that the risk of the accommodated tableware of being damped and mildewed is reduced; the two ultraviolet lamps can respectively carry out ultraviolet sterilization and disinfection on the tableware in the main containing groove and the chopstick containing groove, and the sanitation of the contained tableware is further ensured.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a first cross-sectional view of the present embodiment;

FIG. 3 is an exploded view of the first embodiment;

FIG. 4 is a schematic structural diagram of the hook assembly of the present embodiment;

FIG. 5 is a circuit diagram of the present embodiment;

FIG. 6 is a schematic structural view of the chopstick cabinet in this embodiment;

FIG. 7 is an enlarged view of portion A of FIG. 1;

FIG. 8 is an exploded view of the second embodiment;

FIG. 9 is an enlarged view of portion B of FIG. 8;

FIG. 10 is an exploded view of the third embodiment;

FIG. 11 is a schematic structural view of the receiving box of the present embodiment;

FIG. 12 is a second sectional view of the present embodiment;

fig. 13 is an enlarged schematic view of the portion C shown in fig. 12.

The names of the parts indicated by the numerical references in the above figures are as follows: 1. a cabinet body; 2. a main storage cabinet; 3. a chopstick cabinet; 4. a main storage groove; 5. a chopstick accommodating groove; 6. an accommodating space; 7. a primary vent; 8. chopstick ventilation holes; 9. a fan; 10. a main light hole; 11. a chopstick light hole; 12. an ultraviolet lamp; 13. drawing the groove; 14. a main water leakage hole; 15. the chopstick water leakage hole; 16. a water receiving box; 17. a holding groove; 18. a main cabinet door; 19. a first magnetic member; 20. a second magnetic member; 21. a grip; 22. an induction magnetic member; 23. a magnetically inductive proximity sensor; 24. a control circuit; 25. a hook assembly; 26. mounting a plate; 27. hooking; 28. buckling; 29. a fastening groove; 30. a chopstick cabinet door; 31. a receiving box; 32. a circular arc-shaped guide rail; 33. a slider; 34. circular arc-shaped limiting strips; 35. slip interval; 36. a baffle plate; 37. limiting salient points; 38. a limiting groove; 39. a hinge; 40. a switch assembly; 41. a battery module; 42. a battery case; 43. a charging port; 44. air holes are formed; 45. a stringing hole; 46. and (6) water permeable holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 13, the multifunctional kitchen storage cabinet disclosed in this embodiment includes a cabinet body 1, and the back of the cabinet body 1 can be mounted on an external wall surface through a suction cup, a double-sided adhesive tape or a hook, so that the storage cabinet is more attractive and practical, and belongs to the common general knowledge in the art, and further description thereof is omitted. In this embodiment, the cabinet body 1 includes a main storage cabinet 2 and a chopstick cabinet 3 disposed on one side of the main storage cabinet 2, and the main storage cabinet 2 and the chopstick cabinet 3 are integrally disposed. A main storage groove 4 is formed in the side surface of the main storage cabinet 2, and the main storage groove 4 can be used for storing tableware such as a turner and the like; the side of the chopstick cabinet 3 is provided with a chopstick accommodating groove 5 which can be used for accommodating chopsticks. An accommodating space 6 is arranged between the main accommodating cabinet 2 and the chopstick cabinet 3, a main ventilation hole 7 and a chopstick ventilation hole 8 are respectively formed in the side wall of the main accommodating cabinet 2 opposite to the chopstick cabinet 3, and a fan 9 located between the main ventilation hole 7 and the chopstick ventilation hole 8 is installed in the accommodating space 6. The fan 9 can be fixed on the outer side wall of the chopstick cabinet 3 by screws (not shown), which are common knowledge in the art and will not be described herein. The main light-transmitting holes 10 and the chopstick light-transmitting holes 11 are respectively formed in the opposite side walls of the main storage cabinet 2 and the chopstick cabinet 3, and ultraviolet lamps 12 are respectively arranged in the main light-transmitting holes 10 and the chopstick light-transmitting holes 11.

Further, a main cabinet door 18 covering the main storage groove 4 is pivotally connected to the main storage cabinet 2, and the main cabinet door 18 is preferably pivotally connected to one side edge of the main storage groove 4 by a hinge 39. The edge of one side of main cabinet door 18 is provided with first magnetism spare 19, and the corresponding side edge of main groove 4 of accomodating is provided with second magnetism spare 20 that is used for first magnetism spare 19 of magnetic adsorption, and first magnetism spare 19 and second magnetism spare 20 all prefer permanent magnet, and it can effectively realize the locking or the unblock of main cabinet door 18. The outer side of the main cabinet door 18 is provided with a holding member 21, which can facilitate the user to exert force when the user opens the main cabinet door 18, so as to improve the convenience of operation.

Furthermore, the main cabinet door 18 has a covering surface and an inductive magnetic member 22 disposed along one side edge thereof, wherein the inductive magnetic member 22 is preferably a permanent magnet; a magnetic induction proximity sensor 23 is embedded in the corresponding side edge of the main receiving groove 4 to detect the approaching or departing of the induction magnetic member 22, the magnetic induction proximity sensor 23 is preferably a hall sensor, a control circuit 24 is coupled to the magnetic induction proximity sensor 23, and the ultraviolet lamp 12 and the fan 9 are both coupled and controlled by the control circuit 24. In addition, the upper side of the cabinet 1 is provided with a switch assembly 40, and the switch assembly 40 is coupled to the input end of the control circuit 24 to output a switch signal. The accommodating space 6 is further provided with a battery module 41, and the battery module 41 can supply power to the circuit elements such as the magnetic induction proximity sensor 23, the control circuit 24, the ultraviolet lamp 12, the fan 9, and the like. A battery groove 42 for installing the battery module 41 is arranged on the outer side wall of the chopstick cabinet 3. The outer side wall of the cabinet 1 is further provided with a charging port 43 coupled to the battery module 41, and the charging port 43 is preferably a microUSB interface capable of charging the battery module 41.

In this embodiment, switch assembly 40 can control the start and stop of the kitchen storage cabinet. When the switch assembly 40 is in the on state, the control circuit 24 can control the ultraviolet lamp 12 and the fan 9 to start; on the contrary, when the switch assembly 40 is in the off state, the control circuit 24 can cut off the power supply circuit of the ultraviolet lamp 12 and the fan 9, so as to stop the operation of the ultraviolet lamp 12 and the fan 9. The magnetic induction proximity sensor 23 can detect the approach or the distance of the induction magnetic member 22, thereby judging the opening and closing state of the main cabinet door 18. When the main cabinet door 18 is in the closed state, the magnetic induction proximity sensor 23 can detect the magnetic field of the induction magnetic member 22, and the control circuit 24 controls the ultraviolet lamp 12 and the fan 9 to operate for a period of time and then stop to save electric energy. On the contrary, when the main cabinet door 18 is in the open state, the magnetic induction proximity sensor 23 cannot detect the magnetic field of the induction magnetic member 22, and at this time, the control circuit 24 immediately cuts off the power supply loop of the ultraviolet lamp 12 and the fan 9, so that the operation of the ultraviolet lamp 12 and the fan 9 is stopped, thereby not only saving the electric energy, but also preventing the ultraviolet light emitted by the ultraviolet lamp 12 from irradiating the human body, and ensuring the safety. The control circuit 24 is preferably a single chip microcomputer, and the logic control may be implemented by a built-in program of the single chip microcomputer, or may be implemented by an equivalent analog circuit, which belongs to the common general knowledge in the art and is not described herein again.

Furthermore, the inner wall of the main storage groove 4 is provided with a plurality of hook assemblies 25, so that a plurality of tableware can be hung, and the application range is enlarged. Specifically, each hook assembly 25 includes a mounting plate 26, a hook 27 disposed on one side of the mounting plate 26, a buckle 28 disposed on the other side of the mounting plate 26, and a fastening groove 29 formed on the inner wall of the main accommodating groove 4 for fastening the buckle 28. The clamping cooperation between the buckle 28 and the buckling groove 29 can realize the quick assembly and disassembly of the hook component 25 on the inner wall of the main accommodating groove 4, so that the hook component 25 can be conveniently disassembled and replaced by a user, the use flexibility is increased, and the device is more humanized.

Furthermore, the opening of the chopstick accommodating groove 5 is covered with a chopstick cabinet 3 door, and the shape of the chopstick cabinet 3 door is consistent with that of the opening of the chopstick accommodating groove 5, so that the chopstick accommodating groove 5 can be completely sealed. The inner side of the 3 doors of the chopstick cabinet is provided with the receiving box 31 at the bottom of the inner side, the receiving box 31 can be used for placing chopsticks, so that the chopsticks can be stored more neatly, and meanwhile, the receiving box 31 can be opened and closed along with the 3 doors of the chopstick cabinet, so that the chopsticks can be conveniently taken and put. Both side surfaces of the receiving box 31 are pivotally connected to both inner side walls of the chopstick accommodating groove 5, respectively. Specifically, both sides of the receiving box 31 are provided with pivoting components, the pivoting components comprise circular arc guide rails 32 arranged at openings on the inner side walls of the chopstick accommodating grooves 5, the circular arc guide rails 32 protrude out of the inner walls of the chopstick accommodating grooves 5, the circular arc guide rails 32 are arranged at the bottoms of the chopstick accommodating grooves 5, sliding blocks 33 connected to the outer circumferential surfaces of the circular arc guide rails 32 in a sliding manner are fixed on the outer side walls of the receiving box 31, and the sliding blocks 33 are in sliding fit with the circular arc guide rails 32, so that the receiving box 31 and the chopstick cabinet 3 door can be circumferentially turned over by taking the circumference of the circular arc guide rails 32 as a rotating shaft, and the chopstick cabinet 3 door and the receiving box 31 can be turned over; not only can improve the opening efficiency of the 3 doors of the chopstick cabinet, but also can facilitate the taking and placing of chopsticks. An arc-shaped limiting strip 34 is arranged on the inner side wall of the chopstick accommodating groove 5 and above the arc-shaped guide rail 32, and a sliding interval 35 for sliding and clamping the sliding block 33 is kept between the arc-shaped limiting strip 34 and the arc-shaped guide rail 32. The sliding block 33 is matched with the sliding interval 35, so that the chopstick cabinet 3 can not be separated from the chopstick accommodating groove 5 after being opened for a certain angle. The sliding space 35 is provided with a baffle 36 at the opening of the chopstick accommodating groove 5, and the baffle 36 can block the outward gap of the sliding space 35, thereby preventing the sliding block 33 from separating from the sliding space 35. The outer circumferential surface of the arc-shaped guide rail 32 is provided with a limiting salient point 37, the sliding surface of the sliding block 33 is provided with a limiting groove 38 for clamping the limiting salient point 37, and the limiting salient point 37 is matched with the limiting groove 38 in a clamping manner, so that the relative position between the sliding block 33 and the arc-shaped guide rail 32 when the chopstick cabinet 3 door is closed can be effectively limited, the chopstick cabinet 3 door is prevented from being opened by itself, and the stability of the chopstick cabinet 3 door when the chopstick cabinet is closed is ensured. The chopstick cabinet 3 door is provided with an air hole 44 at a position close to the bottom of the receiving box 31, and the upper end of the chopstick cabinet 3 door is provided with a rope through hole 45 for installing a silica gel rope (not marked), so that the convenience of opening the chopstick cabinet 3 door is improved. The bottom of the receiving box 31 is provided with a water permeable hole 46 for draining residual water on the chopsticks.

Furthermore, a drawing groove 13 is formed on the side surface of the cabinet body 1 near the bottom, the drawing groove 13 is simultaneously located below the main storage cabinet 2 and the chopstick cabinet 3, the bottoms of the main storage cabinet 2 and the chopstick cabinet 3 are respectively provided with a main water leakage hole 14 and a chopstick water leakage hole 15, and the chopstick water leakage hole 15 is opposite to the water permeable hole 46. The main water leakage hole 14 and the chopstick water leakage hole 15 are both communicated with the drawing groove 13, and a water receiving box 16 is inserted in the drawing groove 13. The bottom of the water receiving box 16 is provided with a holding groove 17, so that a user can conveniently exert force when drawing out the water receiving box 16, and the operation convenience is improved.

The specific use principle is as follows:

the user can hang dishes such as a slice, a spoon, etc. on the hook assembly 25 of the main storage groove 4, and then close the main cabinet door 18. Or the chopsticks are placed in the receiving box 31 and the chopsticks cabinet 3 door is closed. The switch assembly 40 is then activated to operate the fan 9 and the two ultraviolet lamps 12. Not only can ensure the ventilation state of the main accommodating groove 4 and the chopstick accommodating groove 5, but also can carry out ultraviolet sterilization and disinfection on the tableware in the main accommodating groove 4 and the chopstick accommodating groove 5, thereby avoiding the mildew of the tableware and ensuring the sanitation and the safety.

Water drops remaining on the slice or the ladle can fall to the bottom of the main storage tank 4, and accumulated water at the bottom of the main storage tank 4 can flow into the water receiving box 16 through the main water leakage hole 14. The water drops remaining on the chopsticks can fall into the bottom of the receiving box 31, and flow into the water receiving box 16 through the water permeable holes 46 and the chopstick water leakage holes 15 in sequence. When the accumulated water in the water receiving box 16 reaches a certain degree, the user can take the water receiving box 16 out of the drawing groove 13 by means of the holding groove 17, pour the water, and finally reset the water receiving box 16.

Claims

1. The utility model provides a cabinet is accomodate in multi-functional kitchen, includes the cabinet body (1), its characterized in that: the chopstick cabinet comprises a cabinet body (1) and a chopstick cabinet (3), wherein the cabinet body comprises a main storage cabinet (2) and the chopstick cabinet (3) arranged on one side of the main storage cabinet (2), a main storage groove (4) is formed in the side surface of the main storage cabinet (2), and a chopstick storage groove (5) is formed in the side surface of the chopstick cabinet (3); an accommodating space (6) is arranged between the main accommodating cabinet (2) and the chopstick cabinet (3), a main vent hole (7) and a chopstick vent hole (8) are respectively formed in the side wall of the main accommodating cabinet (2) opposite to the chopstick cabinet (3), and a fan (9) positioned between the main vent hole (7) and the chopstick vent hole (8) is installed in the accommodating space (6); the main light hole (10) and the chopstick light hole (11) are respectively arranged on the opposite side walls of the main storage cabinet (2) and the chopstick cabinet (3), and ultraviolet lamps (12) are respectively arranged in the main light hole (10) and the chopstick light hole (11).

2. A multifunctional kitchen cabinet according to claim 1, characterized in that: the side of the cabinet body (1) has been seted up in being close to the bottom position and has been drawn groove (13), and draw groove (13) are located the main cabinet (2) and chopsticks cabinet (3) below of accomodating simultaneously, and the main bottom of accomodating cabinet (2) and chopsticks cabinet (3) has been seted up main hole (14) that leaks respectively and has been leaked chopsticks hole (15), and main hole (14) that leaks all communicate in pull groove (13) with chopsticks hole (15), and it has water receiving box (16) to peg graft in pull groove (13).

3. A multifunctional kitchen cabinet according to claim 2, characterized in that: the bottom of the water receiving box (16) is provided with a holding groove (17).

4. A multi-functional kitchen cabinet according to claim 1, 2 or 3, characterized in that: a main cabinet door (18) covering the main containing groove (4) is pivoted on the main containing cabinet (2), a first magnetic part (19) is arranged on one side edge of the main cabinet door (18), and a second magnetic part (20) for magnetically adsorbing the first magnetic part (19) is arranged on the corresponding side edge of the main containing groove (4).

5. A multifunctional kitchen cabinet according to claim 4, characterized in that: the outer side surface of the main cabinet door (18) is provided with a holding piece (21).

6. A multifunctional kitchen cabinet according to claim 4, characterized in that: the covering surface of the main cabinet door (18) is provided with an induction magnetic part (22) at one side edge, a magnetic induction proximity sensor (23) is embedded in the corresponding side edge of the main accommodating groove (4) to detect the approaching or the leaving of the induction magnetic part (22), the magnetic induction proximity sensor (23) is coupled with a control circuit (24), and the ultraviolet lamp (12) and the fan (9) are both coupled and controlled by the control circuit (24).

7. A multifunctional kitchen cabinet according to claim 1, characterized in that: the inner wall of the main storage groove (4) is provided with a plurality of hook components (25), each hook component (25) comprises a mounting plate (26), a hook (27) arranged on one side of the mounting plate (26), a buckle (28) arranged on the other side of the mounting plate (26), and a buckling groove (29) which is arranged on the inner wall of the main storage groove (4) and used for buckling the buckle (28).

8. A multi-functional kitchen cabinet according to claim 1, 2 or 3, characterized in that: the opening of the chopstick accommodating groove (5) is covered with a chopstick cabinet (3) door, the inner side surface of the chopstick cabinet (3) door is provided with a receiving box (31) at the bottom position, and the two side surfaces of the receiving box (31) are respectively pivoted with the two inner side walls of the chopstick accommodating groove (5).

9. A multifunctional kitchen cabinet according to claim 8, characterized in that: the two sides of the bearing box (31) are provided with pivoting components, each pivoting component comprises a circular arc guide rail (32) arranged at an opening on the inner side wall of the chopstick accommodating groove (5), each circular arc guide rail (32) is arranged at the bottom of the chopstick accommodating groove (5), and a sliding block (33) connected with the outer circumferential surface of each circular arc guide rail (32) in a sliding manner is fixed on the outer side wall of the bearing box (31); an arc-shaped limiting strip (34) is arranged on the inner side wall of the chopstick accommodating groove (5) and above the arc-shaped guide rail (32), and a sliding interval (35) for sliding and clamping the sliding block (33) is kept between the arc-shaped limiting strip (34) and the arc-shaped guide rail (32); a separation baffle plate (36) is arranged at the opening position of the chopstick accommodating groove (5) at the sliding interval (35).

10. A multifunctional kitchen cabinet according to claim 9, characterized in that: the outer circumferential surface of the arc-shaped guide rail (32) is provided with a limiting salient point (37), and the sliding surface of the sliding block (33) is provided with a limiting groove (38) for clamping the limiting salient point (37).