Filter device and clamping member for locking assembly housing to housing cover

Abstract

The utility model discloses a filtering device and a clamping component used for locking an assembly shell and a shell cover, and the filtering device comprises the assembly shell which is provided with an opening and an inner cavity for accommodating a filter element; the shell cover is matched with the assembly shell to seal the assembly shell; the lock catch component is provided with a lock catch arm, and the lock catch component is rotationally connected with the shell cover; the wrapping and clamping component is used for wrapping and clamping the assembly shell and the shell cover and is provided with a wrapping and clamping shell seat and a positioning rod connected with the wrapping and clamping shell seat, and the positioning rod is provided with a locking groove; the lock catch arm and the locking groove are embedded or separated by rotating the lock catch component, so that the assembly shell and the shell cover are switched between a locking state and an unlocking state; by rotating the lock catch component, the lock catch arm of the lock catch component is embedded into or separated from the locking groove in the positioning rod of the wrapping and clamping component, so that the assembly shell and the shell cover are switched between the locking state and the unlocking state, and the filter element is conveniently installed and limited in the assembly shell or taken out of the assembly shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering devices, in particular to a filtering device for vehicles which can conveniently and reliably realize locking and unlocking of an assembly housing and a housing cover, and more particularly to a clamping member for locking the assembly housing and the housing cover in the filtering device. BACKGROUND

[0002] Filtering devices are important components in vehicle systems. A filtering device for vehicles generally comprises an assembly housing, a filter element for filtering gas and other small substances contained in the assembly housing, and a housing cover for enclosing the assembly housing and the built-in filter element. Since the filter element in the filtering device needs to be replaced periodically, the housing cover needs to be frequently detached or installed on the filtering device.

[0003] In the prior art, there are generally two ways to install and fix the housing cover of the filtering device:

[0004] 1. Corresponding screw holes are provided on the housing cover and the assembly housing, and then a screw connection is used to realize installation and fixation and detachment between the housing cover and the assembly housing.

[0005] 2. Corresponding locking buckles or other connecting mechanisms are provided on the housing cover and the filter element, so as to realize connection and fixation and detachment between the housing cover and the filter element.

[0006] However, the first way has the disadvantage that it is laborious and troublesome to screw during installation and detachment. As for the second way, corresponding locking buckles or other inserts need to be provided on the filter element to be connected and fixed with the housing cover, which complicates the structure of the filter element itself and brings more inconvenience to the production and manufacture of the filter element. In addition, since the filter material of the filter element is relatively soft relative to the housing cover, the operator needs to be more careful during assembly of the housing cover and the filter element to ensure accurate installation and avoid damage to the filter element, thus causing the problem that the installation and detachment of the filtering device are inconvenient. CONTENT OF THE INVENTION

[0007] In view of the above problems, the present application provides a filtering device which can easily lock and unlock the assembly housing and the housing cover, and a clamping member for locking the assembly housing and the housing cover, so as to make the replacement of the filter element more convenient and reliable.

[0008] The present application provides a filtering device, comprising:

[0009] an assembly housing having an opening and an internal chamber for containing a filter element;

[0010] a housing cover cooperating with the assembly housing to enclose the assembly housing;

[0011] a locking buckle member having a locking buckle arm, the locking buckle member being rotationally connected with the housing cover.

[0012] A clamping member for clamping the assembly housing and the cover, and having a clamping seat and a positioning rod connected with the clamping seat, the positioning rod having a locking groove;

[0013] The assembly housing and the cover are switched between the locked state and the unlocked state by rotating the lock member so that the lock arm is engaged with or separated from the locking groove.

[0014] In the filter device according to the preferred embodiment of the present application, the cover has a lock hole, the lock member has a lock core column, the lock arm is arranged at the upper end of the lock core column and extends outward in the radial direction of the lock core column, the lock core column has a protrusion arranged on the side surface thereof, the lock core column is rotatably arranged in the lock hole, the lock arm and the protrusion are arranged above and below the cover respectively, and the protrusion is engaged with the lower edge of the lock hole.

[0015] In the filter device according to the preferred embodiment of the present application, the assembly housing is extended laterally at the opening to form a housing opening rim, the cover is formed with a locking portion at one end, the lock hole is formed in the locking portion, and the clamping seat of the clamping member clamps the housing opening rim of the assembly housing and the locking portion of the cover, so that the top shell wall of the clamping seat is attached to the locking portion from above and the bottom shell wall of the clamping seat is attached to the housing opening rim from below.

[0016] In the filter device according to the preferred embodiment of the present application, a ramp-shaped rotation guide slope is formed at one end of the positioning rod, and a block-shaped limiting block is formed at the other end of the positioning rod, and the rotation guide slope gradually rises in the direction from the outer end to the locking groove.

[0017] In the filter device according to the preferred embodiment of the present application, two positioning rods are formed in the clamping member, and the two positioning rods are arranged in opposite directions, one of the positioning rods is connected with the top shell wall of the clamping seat at the lower part of the rotation guide slope thereof, and the other positioning rod is connected with the top shell wall of the clamping seat at the lower part of the limiting block thereof.

[0018] In the filter device according to the preferred embodiment of the present application, two lock arms of the lock member extend outward in opposite directions.

[0019] In the filter device according to the preferred embodiment of the present application, a guide arc surface is arranged between the locking groove and the rotation guide slope.

[0020] In the filter device according to the preferred embodiment of the present application, the lock core column of the lock member is arranged in a tapered structure that gradually tapers from top to bottom.

[0021] In the filter device according to the preferred embodiment of the present application, the protrusions are two or more and are arranged uniformly on the side surface of the lock core post and protrude obliquely upward.

[0022] In the filter device according to the preferred embodiment of the present application, a guide protrusion is protruded downward from the lower surface of the lock arm, and a guide groove is correspondingly formed in the shell cover, and when the lock member is assembled with the shell cover, the guide protrusion can be embedded in the guide groove.

[0023] The present application also provides a clamping member for locking the assembly shell and the shell cover in the filter device, wherein the clamping member has a clamping shell seat and a positioning rod connected with the clamping shell seat, and the positioning rod has a locking groove capable of being embedded with or separated from the lock member assembled on the shell cover.

[0024] In the clamping member according to the preferred embodiment of the present application, a ramp-shaped rotation guide slope is formed at one end of the positioning rod, and a block-shaped limiting block is formed at the other end of the positioning rod, and the rotation guide slope gradually rises in the direction from the outer end side to the locking groove.

[0025] In the clamping member according to the preferred embodiment of the present application, two positioning rods are formed in the clamping member and are arranged in opposite directions, one of the positioning rods is connected with the top shell wall of the clamping shell seat at the lower part of the rotation guide slope thereof, and the other positioning rod is connected with the top shell wall of the clamping shell seat at the lower part of the limiting block thereof.

[0026] In the clamping member according to the preferred embodiment of the present application, a guide camber is arranged between the locking groove and the rotation guide slope.

[0027] According to the filter device and the clamping member of the present application, the lock arm of the lock member can be embedded with or separated from the locking groove in the positioning rod of the clamping member by rotating the lock member, that is, the locking and unlocking between the assembly shell and the shell cover can be conveniently and reliably achieved by the embedding or separation of the lock arm and the locking groove, thereby facilitating the installation and removal of the filter core in the assembly shell. It can be seen that according to the filter device of the present application, the locking and unlocking between the assembly shell and the shell cover can be achieved only by the operation of rotating the lock member, which is simple and convenient, thereby achieving the convenient and quick installation and disassembly operation of the filter device. Moreover, according to the filter device of the present application, the problem of the complicated structure of the filter core itself in the prior art is avoided, and therefore the stability of the filter core installation is improved and the filtering effect of the filter core is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is an assembly perspective view of the filter device according to the preferred embodiment of the present application;

[0029] Figure 2 is an assembled top view of a filter device according to a preferred embodiment of the present application;

[0030] Figure 3 is an exploded perspective view of a filter device according to a preferred embodiment of the present application;

[0031] Figure 4 is a perspective view of a bag clamping member according to a preferred embodiment of the present application;

[0032] Figure 5 is an assembled view of a lock member and a shell cover according to a preferred embodiment of the present application;

[0033] Figure 6 is another assembled view of a lock member and a shell cover according to a preferred embodiment of the present application;

[0034] Figure 7 is an assembled view of a lock member and a bag clamping member according to a preferred embodiment of the present application;

[0035] Figure 8 is another assembled view of a lock member and a bag clamping member according to a preferred embodiment of the present application.

[0036] Reference signs are:

[0037] 10 - lock member 11 - lock arm 12 - lock post 13 - guide protrusion 14 - protrusion

[0038] 20 - bag clamping member 21 - bag clamping seat 22 - positioning rod

[0039] 221 - locking groove 222 - rotation guide slope 223 - limiting block 224 - guide arc surface

[0040] 30 - assembly shell 31 - shell opening rim

[0041] 40 - shell cover 41 - locking portion 42 - locking hole 43 - guide groove DETAILED DESCRIPTION

[0042] In order to make the purposes, technical solutions and advantages of the present application clearer, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0043] Figure 1 shows an assembled perspective structure of a filter device according to a preferred embodiment of the present application; Figure 2 shows a top view structure of a filter device according to a preferred embodiment of the present application. Figure 3 shows an exploded perspective structure of a filter device according to a preferred embodiment of the present application.

[0044] According to asFigures 1-3 The filter assembly according to the preferred embodiment of the present application comprises an assembly housing 30, a filter cartridge (not shown) accommodated in the inner chamber of the assembly housing 30, a housing cover 40, a locking member 10, and a clamping member 20.

[0045] The assembly housing 30 has an opening and an inner chamber, and a housing opening rim 31 is formed laterally extending at the opening. The filter cartridge can be loaded into the inner chamber of the assembly housing 30 through the opening thereof before the housing cover 40 is installed, and the filter cartridge can be taken out from the inner chamber of the assembly housing 30 after the housing cover 40 is removed.

[0046] The housing cover 40 is capable of being assembled with the assembly housing 30 to close the opening of the assembly housing 30. As Figure 3 shown, the housing cover 40 is formed with a locking portion 41 at one end thereof. Moreover, a locking hole 42 is formed in the locking portion 41 of the housing cover 40, which penetrates the locking portion 41 from top to bottom.

[0047] Further as Figures 1-3 shown, the locking member 10 has a locking core 12 extending in the axial direction and a locking arm 11 extending outward in the radial direction provided at the upper end of the locking core 12. Moreover, the locking member 10 is capable of rotating about the locking core 12, and a protrusion 14 is provided on the side surface of the locking core 12.

[0048] Figure 4 The clamping member according to the preferred embodiment of the present application is shown in perspective view. As Figure 4 shown, the clamping member 20 has a clamping housing 21 formed with an accommodating cavity and a positioning rod 22 horizontally extending from the clamping housing 21, and a locking groove 221 is formed in the middle portion of the positioning rod 22. The positioning rod 22 is shown in the view of the present application as preferably horizontally extending from the top housing wall of the clamping housing 21, but it can also be selected to horizontally extend from the side housing wall of the clamping housing 21 according to the conditions of the assembly housing and the housing cover.

[0049] As Figure 4 shown, a ramp-shaped rotation guide slope 222 is formed at one end of the positioning rod 22, and a block-shaped limiting block 223 is formed at the other end of the positioning rod 22. The rotation guide slope 222 gradually rises in the direction from the outer end to the locking groove 221.

[0050] When the housing cover 40 is assembled to the assembly housing 30, an operation can be performed to enable the clamping housing 21 of the clamping member 20 to clamp the end portion of at least one part of the assembly housing 30 and the housing cover 40. As Figure 1 , Figure 2As shown, when the shell cover 40 is assembled to the assembly shell 30, the top shell wall of the clamping shell seat 21 can be attached to the locking portion 41 of the shell cover 40 from above, and the bottom shell wall of the clamping shell seat 21 can be attached to the shell opening rim 31 of the assembly shell 30 from below.

[0051] The locking member 10 is rotationally connected to the shell cover 40, i.e. the locking member 10 is rotationally arranged on the shell cover 40, so that the locking core column 12 is rotationally arranged in the locking hole 42 of the shell cover 40, the locking arm 11 and the protrusion 14 are respectively located above and below the shell cover 40, and the protrusion 14 on the side of the locking core column 12 is clamped on the lower edge of the locking hole 42 of the shell cover 40. Thus, by rotating the locking arm 11, the locking arm 11 can be embedded in or separated from the locking groove 221.

[0052] According to a specific embodiment, the shell cover 40 with the locking hole 42 can be first manufactured; then the locking member 10 with the locking arm 11 and the locking core column 12 can be formed at the locking hole 42 of the shell cover 40 by using a mold through an injection molding process, and the protrusion 14 on the side of the locking arm 11 and the locking core column 12 is respectively located above and below the shell cover 40.

[0053] According to another specific embodiment, the locking member 10 can be formed of a material capable of allowing elastic deformation. For example, the locking member 10 can be formed of rubber, plastic or the like. Thus, the locking core column 12 and the protrusion 14 on the side of the locking core column 12 are formed of a material capable of allowing elastic deformation. After the shell cover 40 with the locking hole 42 is manufactured, the locking member 10 is inserted into the locking hole 42, i.e. the locking core column 12 of the locking member 10 and the protrusion 14 on the locking core column 12 are inserted into the locking hole 42 of the shell cover 40, and then the protrusion 14 can be clamped on the lower edge of the locking hole 42 of the shell cover 40.

[0054] When the clamping member 20 is moved from the side to the clamping position of the assembly shell 30 and the shell cover 40, the locking arm 11 can be rotated to embed the locking arm 11 in the locking groove 221, thereby locking the clamping member 20, and further locking the assembly shell 30 and the shell cover 40, so that they remain in the locked state.

[0055] When the locking arm 11 is separated from the locking groove 221 by rotating the locking arm 11, the clamping member 20 can be allowed to move laterally outward to the separation position of the assembly shell 30 and the shell cover 40, and further the assembly shell 30 and the shell cover 40 can be unlocked, i.e. at this time the assembly shell 30 and the shell cover 40 are in the unlocked state, and the shell cover 40 can be allowed to be detached from the assembly shell 30.

[0056] In summary, the locking member 10 is rotatably mounted on the cover 40, and the locking member 10 can be rotated to switch the locking member 10 between the locked state and the unlocked state relative to the clamping member 20, so as to realize the mounting and dismounting of the cover 40 and the assembly housing 30.

[0057] Preferably, the clamping member 20 of the present application has two positioning rods 22. A locking groove 221 is formed in the middle portion of each positioning rod 22, a ramp-shaped rotation guide slope 222 is formed at one end of each positioning rod 22, and a block-shaped limiting block 223 is formed at the other end of each positioning rod 22. Moreover, the two positioning rods 22 in the clamping member 20 are arranged in opposite directions. That is, one of the positioning rods 22 is connected with the top shell wall of the clamping shell seat 21 at the lower part of the rotation guide slope 222 thereof, and the other positioning rod is connected with the top shell wall of the clamping shell seat 21 at the lower part of the limiting block 223 thereof.

[0058] Correspondingly, the locking member 10 is preferably symmetrically provided with two locking arms 11, that is, two locking arms 11 are extended outward in opposite radial directions. When the locking member 10 is rotated about the locking core column 12, the two locking arms 11 extended outward in the radial direction are simultaneously rotated about the locking core column 12. Thus, the locking grooves of the two positioning rods 22 of the clamping member 20 can be respectively engaged with the two locking arms 11 of the locking member 10.

[0059] Preferably, a guide arc surface 224 is arranged between the locking groove 221 and the rotation guide slope 222 of the positioning rod 22, so as to guide the sliding of the locking arm 11 on the positioning rod 22.

[0060] In the present application, the locking member 10, the clamping member 20, the assembly housing 30 and the cover 40 can cooperate with each other to realize the mounting and dismounting between the assembly housing 30 and the cover 40.

[0061] As shown in Figure 3 , Figure 5 , the locking core column 12 of the locking member 10 can be preferably arranged as a tapered structure gradually tapering from top to bottom. Thus, if the embodiment of assembling and mounting the separate locking member 10 to the cover 40 is adopted, the locking core column 12 of the locking member 10 can be more easily assembled into the lock hole 42 of the cover 40, so that the assembly is more convenient.

[0062] In addition, as shown in Figure 3 , Figure 6 , Figure 7As shown, a guide protrusion 13 can preferably be protruded downwardly from the lower surface of the locking arm 11, and a guide groove 43 can be correspondingly formed in the locking portion 41 of the shell cover 40. When the locking member 10 is mounted to the shell cover 40, the guide protrusion 13 can be embedded into the guide groove 43 in the locking portion 41 of the shell cover 40, thereby being able to guide the rotation of the locking member 10 relative to the shell cover 40.

[0063] In addition, as shown in Figure 3 , Figure 5 the protrusion 14 on the side surface of the locking core 12 of the locking member 10 can preferably be protruded obliquely upwardly. In the embodiment of assembling the separate locking member 10 with the shell cover 40, on the one hand, after the locking core 12 is inserted into the lock hole 42 of the shell cover 40, the protrusion 14 of the locking member 10 can more firmly engage the lower edge of the lock hole 42 of the shell cover 40, thereby being able to prevent the locking member 10 from falling off the shell cover 40; on the other hand, the protrusion 14 protruded obliquely upwardly is more conducive to the locking member 10 being assembled into the lock hole 42 of the shell cover 40 from the upper direction to the lower direction.

[0064] As a preference, the protrusion 14 of the locking member 10 can be two or more and uniformly arranged on the side surface of the locking core 12. Thereby, the mounting stability of the locking member 10 relative to the shell cover 40 can be further increased.

[0065] In the assembly of the filter device of the present application, first, the filter core (not shown) is assembled into the inner chamber of the assembly housing 30 through the opening of the assembly housing 30, and then the shell cover 40 provided with the locking member 10 is assembled to the assembly housing 30. At this time, the locking member 10 is mounted in the lock hole 42 of the shell cover 40 by the locking core 12 and can be rotated, and the protrusion 14 of the locking member 10 engages the lower edge of the lock hole 42 of the shell cover 40, thus being able to ensure that the locking member 10 will not fall off the shell cover 40.

[0066] Subsequently, the clamping member 20 is assembled from the side of the assembled assembly housing 30 and shell cover 40, so that the clamping housing seat 21 of the clamping member 20 clamps at least a portion of the end of the assembly housing 30 and the shell cover 40. That is, the top housing wall of the clamping housing seat 21 is attached to the locking portion 41 of the shell cover 40 from above, and the bottom housing wall of the clamping housing seat 21 is attached to the housing opening rim 31 of the assembly housing 30 from below. At this time, the locking arm 11 of the locking member 10 is substantially parallel to the positioning rod 22 of the clamping member 20, that is, the locking member 10 and the clamping member 20 are in the unlocked position.

[0067] Thereafter, the locking member 10 can be rotated by substantially 90° (counterclockwise rotation of the locking member 10 to, for example Figure 2 ,Figure 8 The locking arm 11 of the locking member 10 slides along the rotation guide slope 222 of the positioning rod 22 and finally fits into the locking groove 221 of the positioning rod 22. At this time, the locking member 10 is in the locked position, so that the shell cover 40 can be locked, thereby keeping the assembly shell 30 and the shell cover 40 in the locked state, and achieving reliable closure of the filter device.

[0068] When it is needed to open the shell cover 40 to take out the filter core, the above operation can be reversed.

[0069] The locking member 10 can be rotated in the opposite direction by about 90° (clockwise rotation of the locking member 10 by about 90°), so that the locking arm 11 of the locking member 10 is disengaged from the locking groove 221 of the positioning rod, and the locking arm 11 passes through the guide arc surface 224 and slides along the rotation guide slope 222, and finally the locking arm 11 of the locking member 10 is in a position substantially parallel to the positioning rod 22 of the clamping member 20. At this time, the locking member 10 is in the unlocked position, and the operator can remove the clamping member 20, so that the assembly shell 30 and the shell cover 40 can be unlocked, i.e. at this time the shell 30 and the shell cover 40 are in the unlocked state, allowing the shell cover 40 to be removed from the assembly shell 30, thereby facilitating the removal of the filter core for replacement.

[0070] In summary, according to the filter device and the clamping member of the present application, the locking arm of the locking member can be fitted into or disengaged from the locking groove in the positioning rod of the clamping member by rotating the locking member, i.e. the locking and unlocking between the assembly shell and the shell cover can be conveniently and reliably achieved by fitting or disengaging the locking arm and the locking groove, thereby facilitating the installation and removal of the filter core in the assembly shell. It can be seen that according to the filter device of the present application, the locking and unlocking between the assembly shell and the shell cover can be achieved by only rotating the locking member, which is simple and convenient, thereby achieving convenient and quick installation and disassembly operation of the filter device. Moreover, according to the filter device of the present application, the problem of complex structure of the filter core itself in the prior art is avoided, so that the stability of the filter core installation is improved and the filtering effect of the filter core is ensured.

[0071] The above has been described in detail by combining the specific embodiments of the present application with the accompanying drawings. However, those skilled in the art should understand that the above specific embodiments are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be appropriately modified or some technical features can be replaced by equivalents without departing from the technical idea and scope of the present application.

Claims

1. A filter device, characterized in that The filter device comprises: an assembly shell (30) having an opening and an internal chamber for accommodating a filter element; a shell cover (40) cooperating with the assembly shell (30) to close the assembly shell (30); a locking member (10) having a locking arm (11), the locking member (10) being rotatably connected with the shell cover (40); a clamping member (20) for clamping the assembly shell (30) and the shell cover (40), and having a clamping shell seat (21) and a positioning rod (22) connected with the clamping shell seat (21), the positioning rod (22) having a locking groove (221); the assembly shell (30) and the shell cover (40) are switched between a locked state and an unlocked state by rotating the locking member (10) so that the locking arm (11) is engaged with or disengaged from the locking groove (221).

2. The filter device of claim 1, wherein, The shell cover (40) has a lock hole (42), the locking member (10) has a locking core column (12), the locking arm (11) is arranged at the upper end of the locking core column (12) and extends outwardly in the radial direction of the locking core column (12), and the locking core column (12) has a protrusion (14) arranged on the side surface thereof; the locking core column (12) is rotatably arranged in the lock hole (42), and the locking arm (11) and the protrusion (14) are respectively located above and below the shell cover (40), and the protrusion (14) is engaged with the lower edge of the lock hole (42).

3. The filter device according to claim 2, wherein the assembly shell (30) is extended laterally at the opening to form a shell opening rim (31); one end of the shell cover (40) is formed with a locking portion (41), and the lock hole (42) is formed in the locking portion (41); the clamping shell seat (21) of the clamping member (20) clamps the shell opening rim (31) of the assembly shell (30) and the locking portion (41) of the shell cover (40), so that the top shell wall of the clamping shell seat (21) is attached to the locking portion (41) from above, and the bottom shell wall of the clamping shell seat (21) is attached to the shell opening rim (31) from below.

4. The filter device of claim 1, wherein, one end of the positioning rod (22) is formed with a ramp-shaped rotation guide slope (222), and the other end of the positioning rod (22) is formed with a block-shaped limiting block (223), and the rotation guide slope (222) gradually rises in the direction from the outer end to the locking groove (221).

5. The filter device of claim 4, wherein, two positioning rods (22) are formed in the clamping member (20), and the two positioning rods (22) are arranged in opposite directions, one of which is connected with the top shell wall of the clamping shell seat (21) at the lower part of the rotation guide slope (222) thereof, and the other of which is connected with the top shell wall of the clamping shell seat (21) at the lower part of the limiting block (223) thereof.

6. The filter device of claim 5, wherein, two locking arms (11) extending outwardly in opposite directions are arranged on the locking member (10).

7. The filter device of claim 4, wherein, a guide arc surface (224) is arranged between the locking groove (221) and the rotation guide slope (222).

8. The filter device of claim 2, wherein, The locking core (12) of the locking member (10) is designed as a taper structure gradually tapering from top to bottom.

9. The filter device of claim 2, wherein, The protrusions (14) are two or more and are arranged uniformly on the side surface of the locking core (12) and protrude obliquely upward.

10. The filter device of claim 8, wherein, The protrusions (14) are two or more and are arranged uniformly on the side surface of the locking core (12) and protrude obliquely upward.

11. The filter device according to any one of claims 1-10, characterized in that A guiding protrusion (13) is protruded downward from the lower surface of the locking arm (11), and a guiding groove (43) is correspondingly formed in the shell cover (40), when the locking member (10) is assembled with the shell cover (40), the guiding protrusion (13) can be embedded into the guiding groove (43).

12. A clamp member for locking an assembly housing in a filter device with a housing cover, characterized in that The clamping member (20) has a clamping shell base (21) and a positioning rod (22) connected with the clamping shell base (21), the positioning rod (22) has a locking groove (221) capable of being engaged with or disengaged from the locking member assembled on the shell cover.

13. The bag clamp member of claim 12, wherein, A ramp-shaped rotating guide slope (222) is formed at one end of the positioning rod (22), and a block-shaped limiting block (223) is formed at the other end of the positioning rod (22), the rotating guide slope (222) gradually rises along the direction from the outer end side to the locking groove (221).

14. The bag clamp member of claim 13, wherein, Two positioning rods (22) are formed in the clamping member (20), the two positioning rods (22) are arranged in opposite directions, one of the positioning rods is connected with the top shell wall of the clamping shell base (21) at the lower part of the rotating guide slope (222), and the other positioning rod is connected with the top shell wall of the clamping shell base (21) at the lower part of the limiting block (223).

15. The clamping member according to claim 13, characterized in that, A guiding camber (224) is arranged between the locking groove (221) and the rotating guide slope (222).

Images