CN220567329U - Kayser connection structure and lampblack absorber - Google Patents

Abstract

The utility model relates to the technical field of kitchen equipment, and discloses a clamping and locking connection structure and a range hood. The locking connection structure comprises a first connecting piece, a second connecting piece and a locking mechanism, wherein one end of the first connecting piece is provided with an accommodating groove; the second connecting piece is inserted into the accommodating groove and forms a locking cabin with the groove wall of the accommodating groove, and a clamping boss is arranged on the outer wall of the second connecting piece; the locking mechanism comprises a supporting seat, a locking driving assembly and a clamping assembly, wherein the supporting seat is arranged in the locking bin, the clamping assembly is arranged on the supporting seat in a sliding manner, the locking driving assembly is arranged on the supporting seat in a rotating manner, and the locking driving assembly can drive the clamping assembly to move towards a direction close to the second connecting piece and be clamped on the clamping boss when rotating. When the installation, only need insert the holding tank of first connecting piece with the second connecting piece in, rotate again and lock the drive assembly and can make joint subassembly and joint boss looks joint, easy operation is convenient and swift, can be applicable to the installation environment of one side wall.

Description

Kayser connection structure and lampblack absorber

Technical Field

The utility model relates to the technical field of kitchen equipment, in particular to a clamping and locking connection structure and a range hood.

Background

A large amount of oil smoke is generated in the cooking process, and if the cooking device is in an oil smoke environment for a long time, the body health of a user is damaged, and the oil smoke generated along with cooking is attached to kitchen ware and a wall, so that the cleaning difficulty is high, and most families can install the range hood to relieve the situation. The range hood is a common kitchen appliance for purifying kitchen environment, and achieves the purposes of purifying kitchen air and improving cooking comfort of users by rapidly extracting and discharging exhaust gas generated by a gas cooker and oil smoke generated in a cooking process.

The range hood generally comprises a smoke collecting cavity, a case and a smoke exhaust pipeline, wherein a main fan is arranged in the case, an outlet of the smoke collecting cavity is communicated with an inlet of the case through a connecting pipeline, when the range hood needs to be used, the main fan is started, negative pressure in the case is gradually increased, and kitchen smoke is sequentially discharged from the smoke exhaust pipeline to a public smoke exhaust air duct after passing through the smoke collecting cavity, the connecting pipeline and the case under the action of the negative pressure, so that the effect of purifying kitchen air is achieved. The overhead type range hood that proposes among the prior art is through hiding the quick-witted case in the furred ceiling inside, can keep the pleasing to the eye clean and tidy in kitchen on the one hand, and on the other hand the fan is located quick-witted case, and far away from user's ear, noise that produces when can reduce the use range hood. However, the connecting pipeline of the overhead type range hood is close to the wall, the smoke collecting cavity and the connecting pipeline cannot be fastened through screws, so that the range hood is inconvenient to assemble and disassemble, and the workload of operators is large.

Therefore, it is desirable to provide a latch connection structure to solve the above-mentioned problems.

Disclosure of Invention

Based on the above, the utility model aims to provide the clamping and locking connection structure and the range hood, which are convenient for dismounting the range hood, reduce the workload of operators and lower the labor cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a locking connection structure, which comprises:

one end of the first connecting piece is provided with an accommodating groove;

the second connecting piece is inserted into the accommodating groove and forms a locking cabin with the groove wall of the accommodating groove, and a clamping boss is arranged on the outer wall of the second connecting piece;

the locking mechanism comprises a supporting seat, a locking driving assembly and a clamping assembly, wherein the supporting seat is arranged in a locking bin, the clamping assembly is arranged on the supporting seat in a sliding manner, the locking driving assembly is arranged on the supporting seat in a rotating manner, and the locking driving assembly can drive the clamping assembly to move towards a direction close to the second connecting piece and be clamped on the clamping boss when rotating.

As a preferable scheme of the locking connection structure, the locking driving assembly comprises a shaft lever and a first cam arranged on the shaft lever, and the shaft lever is rotatably arranged on the supporting seat;

the clamping assembly comprises a first clamping seat which is arranged on the supporting seat in a sliding manner, one side, away from the second connecting piece, of the first cam is abutted against the first clamping seat, and when the shaft rod rotates, the first cam can push the first clamping seat to move towards the direction close to the second connecting piece.

As a preferable scheme of the locking connection structure provided by the utility model, a first reset piece is arranged between the first locking seat and the supporting seat.

As a preferable scheme of the locking connection structure, the locking driving assembly comprises a shaft lever and a second cam arranged on the shaft lever, and the shaft lever is rotatably arranged on the supporting seat;

the clamping assembly comprises a second clamping seat, a pushing block and a buckle arranged on the second clamping seat, wherein a first guiding inclined plane is arranged on the second clamping seat, the pushing block is arranged between the second cam and the second clamping seat, a second guiding inclined plane corresponding to the first guiding inclined plane is arranged on the pushing block, and when the shaft rod rotates, the second cam can push the second clamping seat to move towards a direction close to the second connecting piece through the pushing block so that the buckle is clamped on the clamping boss.

As an optimal scheme of the locking connection structure, the number of the buckles is multiple, and the buckles are arranged at intervals along the length direction of the second clamping seat.

As a preferable scheme of the locking connection structure provided by the utility model, a second reset piece is arranged between the second locking seat and the supporting seat.

As a preferable scheme of the locking connection structure provided by the utility model, a screwing groove communicated with the locking bin is further formed in the side wall of the first connecting piece, one end of the shaft rod extends out of the screwing groove and is connected with a screwing buckle, a locking protrusion is arranged on the outer wall of the first connecting piece, and the screwing buckle can be locked with the locking protrusion.

As a preferable mode of the latch connection structure provided by the utility model, the locking protrusion is arranged on the first connecting piece in a sliding way.

The utility model also provides a range hood, which comprises a power system, a smoke collecting system and a pipeline system, wherein the pipeline system is used for communicating the power system and the smoke collecting system, the range hood further comprises a locking connection structure according to any scheme, and the pipeline system and the smoke collecting system are connected through the locking connection structure.

As a preferable scheme of the range hood provided by the utility model, the switching air outlet seat of the smoke collecting system forms a first connecting piece of a locking connection structure, and the pipeline joint of the pipeline system forms a second connecting piece of the locking connection structure; an oil-proof extension wall is arranged in the first connecting piece, an oil-proof clamping groove is formed in the second connecting piece, and when the first connecting piece is inserted into the second connecting piece, the oil-proof extension wall can be clamped in the oil-proof clamping groove.

The beneficial effects of the utility model are as follows:

the utility model provides a locking connection structure which comprises a first connecting piece, a second connecting piece and a locking mechanism, wherein one end of the first connecting piece is provided with an accommodating groove; the second connecting piece is inserted into the accommodating groove and forms a locking cabin with the groove wall of the accommodating groove, and a clamping boss is arranged on the outer wall of the second connecting piece; the locking mechanism comprises a supporting seat, a locking driving assembly and a clamping assembly, wherein the supporting seat is arranged in the locking bin, the clamping assembly is arranged on the supporting seat in a sliding manner, the locking driving assembly is arranged on the supporting seat in a rotating manner, and the locking driving assembly can drive the clamping assembly to move towards a direction close to the second connecting piece and be clamped on the clamping boss when rotating. When the installation, only need insert the holding tank of first connecting piece with the second connecting piece in, rotate again and lock the drive assembly and can make joint subassembly and joint boss looks joint, easy operation is convenient and swift, can be applicable to the installation environment of one side wall.

According to the range hood, by applying the locking connection structure, the smoke collecting system and the pipeline system of the range hood can be quickly disassembled and assembled, the connection operation space is saved, and the labor cost can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a first connecting member according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a second connector according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a latch mechanism according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a support base according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a lock drive assembly according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a first clamping assembly according to an embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view showing a first connector and a second connector locked together according to an embodiment of the present utility model;

FIG. 9 is an enlarged view of a portion of FIG. 8 at A;

fig. 10 is a schematic structural diagram of a second clamping assembly according to an embodiment of the present utility model;

FIG. 11 is a second schematic cross-sectional view of a first connector and a second connector according to an embodiment of the present utility model;

fig. 12 is a partial enlarged view of fig. 11 at B;

FIG. 13 is a schematic view of a fastening structure according to an embodiment of the present utility model;

fig. 14 is a schematic view of an appearance structure of a smoke collecting system and a pipe system after being connected according to an embodiment of the present utility model;

fig. 15 is a partial enlarged view of fig. 14 at C.

In the figure:

100-power system; 200-a smoke collecting system; 300-piping system;

1-a first connector; 101-a flange base; 102-auxiliary flange edges; 103-a first standing wall; 104-a second vertical wall; 11-a receiving groove; 12-locking projections; 13-a spin-buckle groove;

2-a second connector; 21-clamping the boss; 22-oil-proof clamping grooves;

a 3-latch mechanism;

31-a supporting seat; 301-a first side; 302-a second side; 303-a third side; 304-fourth side; 311-peripheral walls; 312-inner peripheral walls; 3121—a first limit bump; 3122-a second limit bump; 3123-first avoidance aperture; 3124-a second escape aperture; 313-connecting the bottom plate; 3131—a first slide; 3132—a second slide;

32-locking the drive assembly; 321-a shaft lever; 322-first cam; 323-a second cam; 324-screwing and fastening; 3241-hook groove;

33-a clamping assembly; 331-a first clamping seat; 3311—a first runner; 3312—a first accommodation groove; 332-a second clamping seat; 3321—a first guide ramp; 3322-a second accommodation groove; 3323-second chute; 333-snap; 334-push block; 3341-second guide ramp;

34-a first reset element; 35-a second reset element.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Fig. 1 shows a schematic structural diagram of a range hood provided in this embodiment. As shown in fig. 1, the present embodiment provides a range hood, which includes a power system 100, a smoke collecting system 200, and a pipe system 300, wherein the pipe system 300 is used for communicating the power system 100 and the smoke collecting system 200. When the user starts the range hood, the power system 100 can generate negative pressure in the smoke collecting system 200 and the pipeline system 300, and kitchen smoke is discharged from the smoke discharging pipeline into the public smoke discharging air duct after sequentially passing through the smoke collecting system 200 and the pipeline system 300 under the action of the negative pressure, so that the effect of purifying kitchen air is realized. However, for the overhead type range hood, the pipeline system 300 is close to the wall, the smoke collecting system 200 and the pipeline system 300 cannot be fastened through screws, so that the range hood is inconvenient to assemble and disassemble, and the workload of operators is large.

Fig. 2 shows a schematic structural view of the first connector 1 provided in the present embodiment. Fig. 3 shows a schematic structural view of the second connector 2 provided in the present embodiment. Fig. 4 shows a schematic structural view of the latch mechanism 3 provided in the present embodiment. In order to solve the above-mentioned problems, as shown in fig. 2-4 and in combination with fig. 1, the present embodiment further provides a latch connection structure, which includes a first connector 1, a second connector 2 and a latch mechanism 3, wherein one end of the first connector 1 is provided with a receiving slot 11; the second connecting piece 2 is inserted into the accommodating groove 11 and forms a locking cabin with the groove wall of the accommodating groove 11, and a clamping boss 21 is arranged on the outer wall of the second connecting piece 2; the locking mechanism 3 comprises a supporting seat 31, a locking driving component 32 and a clamping component 33, wherein the supporting seat 31 is arranged in a locking bin, the clamping component 33 is slidably arranged on the supporting seat 31, the locking driving component 32 is rotatably arranged on the supporting seat 31, and the locking driving component 32 can drive the clamping component 33 to move towards a direction close to the second connecting piece 2 and be clamped on the clamping boss 21 when rotating.

It should be noted that, when the latch connection structure is applied to a range hood, the adaptor air outlet seat of the smoke collecting system 200 forms the first connector 1, and the pipe joint of the pipe system 300 forms the second connector 2. When the smoke collecting system 200 and the pipeline system 300 are connected, the clamping assembly 33 and the clamping boss 21 can be clamped by only inserting the second connecting piece 2 into the accommodating groove 11 of the first connecting piece 1 and rotating the locking driving assembly 32, so that the stable connection of the smoke collecting system 200 and the pipeline system 300 is realized, the connection operation space is saved, and the quick dismounting of the range hood is facilitated.

Fig. 5 shows a schematic structural view of the support seat 31 provided in the present embodiment. Fig. 6 shows a schematic structural view of the lock drive assembly 32 provided in the present embodiment. Fig. 7 shows a schematic structural diagram of the first clamping assembly 33 according to the present embodiment. Fig. 8 shows a schematic cross-sectional view of the first connector 1 and the second connector 2 locked together according to the present embodiment. Fig. 9 shows a partial enlargement of fig. 8 at a. As shown in fig. 5-9, the locking driving assembly 32 includes a shaft 321 and a first cam 322 disposed on the shaft 321, and the shaft 321 is rotatably disposed on the supporting seat 31; the clamping assembly 33 comprises a first clamping seat 331 slidably arranged on the supporting seat 31, the first cam 322 is abutted against one side, away from the second connecting piece 2, of the first clamping seat 331, and when the shaft rod 321 rotates, the first cam 322 can push the first clamping seat 331 to move towards a direction close to the second connecting piece 2. After the second connecting piece 2 is inserted into the accommodating groove 11 of the first connecting piece 1, the shaft lever 321 is rotated to drive the first cam 322 to rotate, so as to push the first clamping seat 331 to move towards the direction approaching to the second connecting piece 2 and be clamped on the clamping boss 21. Through setting up first cam 322 on axostylus axostyle 321, can turn into the rectilinear motion of first joint seat 331 with axostylus axostyle 321 around self rotary motion, and the surface of first cam 322 is smooth convex, can also reduce the friction between first cam 322 and the first joint seat 331, prevents first joint seat 331 surface wearing and tearing.

Specifically, the supporting base 31 includes a peripheral wall 311, a peripheral wall 312, and a connection base 313, the peripheral wall 311 is disposed around the peripheral wall 312, two sides of the connection base 313 are respectively connected to the peripheral wall 311 and the peripheral wall 312, and the peripheral wall 311, the peripheral wall 312, and the connection base 313 are disposed around to form a rectangular ring structure. The first clamping seat 331 is slidably disposed on the connection bottom plate 313, a first sliding table 3131 is disposed on the connection bottom plate 313, a first sliding groove 3311 is disposed at the bottom of the first clamping seat 331, and the first sliding table 3131 is slidably matched with the first sliding groove 3311 to provide guidance for the sliding of the first clamping seat 331 along the supporting seat 31, and ensure smoothness of the sliding process of the first clamping seat 331 along the supporting seat 31. Optionally, the inner wall 312 is further provided with a first avoiding hole 3123 for avoiding the first clamping seat 331, and the top of the first clamping seat 331 can pass through the first avoiding hole 3123 and be clamped on the clamping boss 21.

Optionally, a first reset element 34 is disposed between the first clamping seat 331 and the supporting seat 31. Specifically, two ends of the first resetting piece 34 are respectively connected with the first clamping seat 331 and the inner wall 312, and when the clamping boss 21 is clamped with the first clamping seat 331, the first resetting piece 34 is in a compressed state; when the smoke collecting system 200 and the pipe system 300 need to be disassembled, the shaft rod 321 can be reversely rotated to separate the first cam 322 from the first clamping seat 331, and the first clamping seat 331 can move away from the second connecting piece 2 under the action of the elastic restoring force of the first resetting piece 34, so that the first clamping seat 331 and the clamping boss 21 are separated, and at this time, the smoke collecting system 200 and the pipe system 300 can be separated. Optionally, the first restoring member 34 may be a spring, which has a larger elastic restoring force, is convenient to obtain materials, is convenient to assemble, and can reduce manufacturing cost.

Further, the first clamping seat 331 is further provided with a first accommodating groove 3312, the inner wall 312 is provided with a first limiting protrusion 3121, one end of the first resetting member 34 is accommodated in the first accommodating groove 3312, the other end of the first resetting member 34 is sleeved on the first limiting protrusion 3121, and the first resetting member 34 can be limited by the cooperation of the first accommodating groove 3312 and the first limiting protrusion 3121, so that the first resetting member 34 can only stretch along the axial direction thereof.

Fig. 10 shows a schematic structural diagram of a second clamping assembly 33 according to the present embodiment. Fig. 11 shows a second schematic cross-sectional view of the first connector 1 and the second connector 2 according to the present embodiment. Fig. 12 shows a partial enlarged view of fig. 11 at B. As shown in fig. 10-12 and fig. 5-6, the shaft 321 is further provided with a second cam 323, the clamping assembly 33 includes a second clamping seat 332, a pushing block 334 and a buckle 333 disposed on the second clamping seat 332, the second clamping seat 332 is provided with a first guiding inclined plane 3321, the pushing block 334 is disposed between the second cam 323 and the second clamping seat 332, the pushing block 334 is provided with a second guiding inclined plane 3341 corresponding to the first guiding inclined plane 3321, and when the shaft 321 rotates, the second cam 323 can push the second clamping seat 332 to move in a direction close to the second connecting piece 2 through the pushing block 334, so that the buckle 333 is clamped in the clamping boss 21. After the second connecting piece 2 is inserted into the accommodating groove 11 of the first connecting piece 1, the shaft rod 321 is rotated to drive the second cam 323 to rotate, so as to push the pushing block 334, and under the cooperation of the first guiding inclined plane 3321 and the second guiding inclined plane 3341, the second clamping seat 332 is moved towards the direction close to the second connecting piece 2, so that the clamping buckle 333 is clamped on the clamping boss 21. Through setting up second cam 323 on axostylus axostyle 321, can turn into the rectilinear motion of second joint seat 332 with the rotation motion of axostylus axostyle 321 around self, and the surface of second cam 323 is smooth convex, can also reduce the friction between second cam 323 and the impeller 334, prevents impeller 334 surface wearing and tearing.

Optionally, the inner wall 312 is further provided with a second avoiding hole 3124 for avoiding the buckle 333, and the buckle 333 can pass through the second avoiding hole 3124 and be clamped on the clamping boss 21. In this embodiment, the number of the buckles 333 is multiple, and the multiple buckles 333 are disposed along the length direction of the second card holder 332 at intervals, so as to increase the clamping area between the buckles 333 and the clamping boss 21, and further ensure the connection stability between the first connector 1 and the second connector 2. Adaptively, the number of the second avoidance holes 3124 may be plural and correspond to the plural buckles 333 one by one; the second avoidance hole 3124 may be a long hole, and the plurality of buckles 333 may simultaneously pass through the long hole to be engaged with the engaging boss 21.

Specifically, the second clamping seat 332 is slidably disposed on the connection bottom plate 313, a second sliding table 3132 is further disposed on the connection bottom plate 313, a second sliding groove 3323 is disposed at the bottom of the second clamping seat 332, and the second sliding table 3132 is slidably matched with the second sliding groove 3323 to provide guidance for sliding the second clamping seat 332 along the supporting seat 31, and ensure smoothness of the sliding process of the second clamping seat 332 along the supporting seat 31.

Optionally, a second reset element 35 is disposed between the second clamping seat 332 and the supporting seat 31. Specifically, two ends of the second reset element 35 are respectively connected with the second clamping seat 332 and the inner wall 312, and when the clamping boss 21 is clamped with the buckle 333 on the second clamping seat 332, the second reset element 35 is in a compressed state; when the smoke collecting system 200 and the pipe system 300 need to be disassembled, the shaft rod 321 can be reversely rotated to separate the second cam 323 from the pushing block 334, and the second clamping seat 332 can move away from the second connecting piece 2 under the action of the elastic restoring force of the second restoring piece 35, so that the buckle 333 and the clamping boss 21 are separated, and at this time, the smoke collecting system 200 and the pipe system 300 can be separated. Optionally, the second restoring member 35 may be a spring, which has a larger elastic restoring force, is convenient to obtain materials, is convenient to assemble, and can reduce manufacturing cost.

Further, a second accommodating groove 3322 is further provided on the second card socket 332, a second limiting protrusion 3122 is provided on the inner wall 312, one end of the second restoring member 35 is accommodated in the second accommodating groove 3322, the other end of the second restoring member 35 is sleeved on the second limiting protrusion 3122, and the second restoring member 35 can be limited by the cooperation of the second accommodating groove 3322 and the second limiting protrusion 3122, so that the second restoring member 35 can only stretch along the axial direction thereof.

In the present embodiment, the supporting seat 31 has a rectangular ring structure. For convenience of description, four sides of the connection base 313 are defined as a first side 301, a second side 302, a third side 303, and a fourth side 304, respectively, and the first side 301, the second side 302, the third side 303, and the fourth side 304 are connected end to end in sequence. The first side 301 and the third side 303 are opposite to each other, and the first side 301 and the third side 303 are provided with a locking driving component 32 and a first clamping seat 331; the second side 302 and the fourth side 304 are opposite to each other, and the second side 302 and the fourth side 304 are provided with a second clamping seat 332 and a pushing block 334; the locking driving component 32 disposed on the first side 301 can simultaneously drive the first clamping seat 331 on the first side 301, the second clamping seat 332 on the second side 302, and the second clamping seat 332 on the fourth side 304 to move in a direction approaching to the second clamping member 2; the locking driving component 32 arranged on the third side 303 can drive the first clamping seat 331 on the third side 303 to move towards the direction close to the second clamping piece 2, so that the locking between the corresponding four sides of the first clamping piece 1 and the second clamping piece 2 is realized, and the stability of connection between the two sides is improved.

It should be noted that, the first clamping seat 331 forms the first clamping assembly 33, the second clamping seat 332, the pushing block 334 and the buckle 333 on the second clamping seat 332 form the second clamping assembly 33, and in other embodiments, the locking driving assembly 32 may be combined with any number of the first clamping assemblies 33 or any number of the second clamping assemblies 33 to achieve the mutual locking of the first clamping member 1 and the second clamping member 2, which is not limited in this embodiment.

Fig. 13 shows a schematic structural view of the screwing buckle 324 provided in the present embodiment. Fig. 14 is a schematic view showing the external appearance of the smoke collecting system 200 and the pipe system 300 according to the present embodiment after being connected. Fig. 15 shows a partial enlarged view of fig. 14 at C. As shown in fig. 13-15 and fig. 4 and 6, a turnbuckle groove 13 communicated with the locking bin is further formed in the side wall of the first connecting piece 1, one end of the shaft rod 321 extends out of the turnbuckle groove 13 and is connected with a turnbuckle 324, a locking protrusion 12 is arranged on the outer wall of the first connecting piece 1, and the turnbuckle 324 can be locked with the locking protrusion 12. Through setting up the knot 324 of screwing that can stretch out first connecting piece 1, can make things convenient for the manual rotation axostylus axostyle 321 of user, and screw knot 324 and lock mutually with locking protruding 12, further guaranteed the stability of being connected between first joint piece 1 and the second joint piece 2.

Specifically, a hook groove 3241 is disposed at an end of the screwing buckle 324 away from the shaft 321, and the hook groove 3241 can be engaged with the locking protrusion 12. Optionally, the locking protrusion 12 is slidably disposed on the first connecting piece 1, so that the locking protrusion 12 has an avoidance position for avoiding the screwing buckle 324 and a locking position locked with the screwing buckle 324, and when the shaft 321 needs to be rotated, the locking protrusion 12 can be slid to the avoidance position, so as to ensure smoothness of rotation of the shaft 321; when the shaft 321 is rotated into position, the locking projection 12 can be slid into a locked position to effect locking of the locking projection 12 and the tightening buckle 324.

With continued reference to fig. 2 and 3, in this embodiment, the first connecting piece 1 is a adapting air outlet seat of the smoke collecting system 200, the second connecting piece 2 is a pipeline joint of the pipeline system 300, the adapting air outlet seat is a hollow cylindrical structure, the pipeline joint is a hollow cylindrical structure, and the shape of the adapting air outlet seat is adapted to the shape of the pipeline joint, and the adapting air outlet seat are connected in an inserting manner. One end of the switching air outlet seat is provided with a flange base 101, the flange base 101 is fastened on a smoke collecting cavity of the smoke collecting system 200 through screws, the other end of the switching air outlet seat extends outwards and vertically to form an auxiliary flange edge 102, a first vertical wall 103 and a second vertical wall 104 are arranged on the auxiliary flange edge 102 in parallel and at intervals, the first vertical wall 103 is located on the inner side of the second vertical wall 104, the auxiliary flange edge 102, the first vertical wall 103 and the second vertical wall 104 are surrounded to form the containing groove 11, and the first vertical wall 103 forms an oil-proof extending wall. Be provided with grease proofing draw-in groove 22 on the inner wall of pipeline joint, when first connecting piece 1 pegged graft on second connecting piece 2, grease proofing extension wall can the joint in grease proofing draw-in groove 22 to prevent that greasy dirt from leaking from the junction of first connecting piece 1 and second connecting piece 2.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. A latch connection structure comprising:

a first connecting piece (1), wherein one end of the first connecting piece (1) is provided with an accommodating groove (11);

the second connecting piece (2) is inserted into the accommodating groove (11) and forms a locking cabin with the groove wall of the accommodating groove (11), and a locking boss (21) is arranged on the outer wall of the second connecting piece (2);

the locking mechanism (3) comprises a supporting seat (31), a locking driving assembly (32) and a clamping assembly (33), wherein the supporting seat (31) is arranged in the locking bin, the clamping assembly (33) is slidably arranged on the supporting seat (31), the locking driving assembly (32) is rotatably arranged on the supporting seat (31), and the locking driving assembly (32) can drive the clamping assembly (33) to move towards the direction close to the second connecting piece (2) and be clamped to the clamping boss (21) when being rotated.

2. The latch connection according to claim 1, wherein the lock drive assembly (32) comprises a shaft (321) and a first cam (322) provided on the shaft (321), the shaft (321) being rotatably provided on the support base (31);

the clamping assembly (33) comprises a first clamping seat (331) arranged on the supporting seat (31) in a sliding mode, the first cam (322) is abutted to one side, away from the second connecting piece (2), of the first clamping seat (331), and when the shaft rod (321) rotates, the first cam (322) can push the first clamping seat (331) to move towards the direction close to the second connecting piece (2).

3. The latch connection structure according to claim 2, wherein a first reset member (34) is provided between the first latch base (331) and the support base (31).

4. The latch connection structure according to claim 1, wherein the lock driving assembly (32) includes a shaft (321) and a second cam (323) provided on the shaft (321), the shaft (321) being rotatably provided on the support base (31);

the clamping assembly (33) comprises a second clamping seat (332), a pushing block (334) and a buckle (333) arranged on the second clamping seat (332), a first guide inclined surface (3321) is arranged on the second clamping seat (332), the pushing block (334) is arranged between the second cam (323) and the second clamping seat (332), a second guide inclined surface (3341) corresponding to the first guide inclined surface (3321) is arranged on the pushing block (334), and when the shaft rod (321) rotates, the second cam (323) can push the second clamping seat (332) to move towards the direction close to the second connecting piece (2) through the pushing block (334), so that the buckle (333) is clamped to the clamping boss (21).

5. The latch connection structure according to claim 4, wherein the number of the hooks (333) is plural, and the hooks (333) are disposed at intervals along the length direction of the second latch base (332).

6. The latch connection according to claim 4, wherein a second reset member (35) is provided between the second latch base (332) and the support base (31).

7. The locking connection structure according to any one of claims 2-6, wherein a screwing groove (13) communicated with the locking cabin is further formed in the side wall of the first connecting piece (1), one end of the shaft lever (321) extends out of the screwing groove (13) and is connected with a screwing buckle (324), a locking protrusion (12) is arranged on the outer wall of the first connecting piece (1), and the screwing buckle (324) can be locked with the locking protrusion (12).

8. The latch connection according to claim 7, characterized in that the locking projection (12) is slidingly arranged on the first connecting piece (1).

9. A range hood comprising a power system (100), a smoke collecting system (200) and a pipeline system (300), wherein the pipeline system (300) is used for communicating the power system (100) and the smoke collecting system (200), and is characterized in that the range hood further comprises a locking connection structure according to any one of claims 1-8, and the pipeline system (300) and the smoke collecting system (200) are connected through the locking connection structure.

10. The range hood according to claim 9, characterized in that the adapter outlet seat of the fume collecting system (200) forms a first connection piece (1) of the snap-lock connection, and the pipe joint of the pipe system (300) forms a second connection piece (2) of the snap-lock connection; be provided with grease proofing extension wall in first connecting piece (1), be provided with grease proofing draw-in groove (22) in second connecting piece (2), work as first connecting piece (1) peg graft in on second connecting piece (2), grease proofing extension wall can the joint in grease proofing draw-in groove (22).