CN212691892U - Screw falling prevention clamp ring type structure and range hood - Google Patents
Screw falling prevention clamp ring type structure and range hood Download PDFInfo
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- CN212691892U CN212691892U CN202021462625.7U CN202021462625U CN212691892U CN 212691892 U CN212691892 U CN 212691892U CN 202021462625 U CN202021462625 U CN 202021462625U CN 212691892 U CN212691892 U CN 212691892U
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Abstract
The utility model relates to a prevent screw retaining ring formula structure and lampblack absorber that drops, including pressing splenium and joint portion, pressing the splenium and forming the draw-in groove between the joint portion, the draw-in groove is used for preventing that the screw drops retaining ring formula structure and oil net fixed bolster is connected, prevents that the screw from dropping retaining ring formula structure and offers the through-hole that is used for wearing to establish the screw, and the inner wall of through-hole is equipped with the spacing portion that adopts flexible material, be equipped with the bulge on the screw, along spacing portion to pressing the orientation of splenium, the one end that the screw was equipped with the bulge penetrates the through-hole, and the bulge can with spacing portion butt, solved the oil net of range hood among the prior art when the dismouting is washd.
Description
Technical Field
The utility model relates to a mechanical connection anti-drop technical field particularly, relates to a prevent that screw drops snap ring formula structure and lampblack absorber.
Background
Range hoods have become standard products for kitchen appliances. Because of the special food culture of China, the large oil amount, the stir-frying and the deep-frying type vegetable series are more, so that more oil smoke is generated, the oil smoke is a main factor of the continuous rising of the PM2.5 value of air, an oil screen for a range hood is a better means for filtering the oil smoke and reducing the concentration of the discharged oil smoke, after the oil smoke is filtered by the oil screen, the meshes of the oil screen are easy to block, the oil screen needs to be cleaned frequently, and the convenience for detaching the oil screen of the range hood can influence the user experience.
Usually, oil net mounting means does, and two pins are participated in the design of oil net one side, and the another side adopts the fix with screw, and the screw volume is less, and oil net is general to exceed about half a meter distance apart from the cooking bench, and the oil net screw is loosened the back, and very big rate drops to the cooking bench, and the screw can disappear unseen, and this has influenced the installation of oil net, greatly influences user experience.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prevent screw retaining ring formula structure and lampblack absorber that drops, this retaining ring formula structure and oil net subassembly have solved range hood among the prior art's oil net when the dismouting washs, the problem that the screw on the oil net easily falls.
In order to achieve the above object, a first aspect of the present invention provides a screw drop prevention snap ring type structure, including pressing splenium and joint portion, press the splenium with form the draw-in groove between the joint portion, the draw-in groove be used for with prevent that the screw drops snap ring type structure and be connected with oil net fixed bolster, prevent that the screw drops snap ring type structure and offer the through-hole that is used for wearing to establish the screw, the inner wall of through-hole is equipped with the spacing portion that adopts flexible material, be equipped with the bulge on the screw, along spacing portion extremely press the orientation of splenium, the one end that the screw was equipped with the bulge can penetrate the through-hole, just the bulge can with spacing portion butt.
In an alternative embodiment, the inner diameter of the stopper portion is smaller than the inner diameter of the pressing portion.
In an optional embodiment, the screw further comprises a screw head and a screw shaft, the screw end far away from the screw head is the bulge, the screw shaft is a smooth section, and the diameter of the bulge is larger than that of the screw shaft.
In an alternative embodiment, the diameter of the protruding portion of the screw is larger than the inner diameter of the stopper portion, and the diameter of the protruding portion of the screw is smaller than the inner diameter of the pressing portion.
In an alternative embodiment, the diameter of the screw portion is φ 3, and the difference between the diameter of the protrusion and the diameter of the screw portion is 1.1 mm.
In an optional embodiment, the screw falling-off prevention snap ring structure further comprises a crack-stopping groove for preventing the screw from damaging the limiting part.
In an optional implementation mode, one side of the clamping portion, which is far away from the clamping groove, is provided with a guide inclined plane for guiding the screw falling prevention clamping ring type structure to be clamped with the oil net fixing support.
In an optional embodiment, the screw penetrates through the screw falling prevention snap ring structure and is locked with a rivet nut, the rivet nut is fixed on the side wall of one end of the oil screen, and a pin is arranged at the other end of the oil screen opposite to the rivet nut and is used for being inserted into the oil screen fixing support.
In an optional embodiment, the oil screen fixing support is provided with a through hole matched with the screw, and a sinking platform is designed at the through hole.
In a second aspect, an embodiment of the present invention provides a range hood, including a snap ring structure for preventing a screw from falling off as in any one of the foregoing embodiments.
Has the advantages that:
the embodiment of the utility model provides a prevent screw retaining ring formula structure that drops, including pressing splenium and joint portion, pressing the splenium and forming the draw-in groove between the joint portion, the draw-in groove is used for preventing the screw retaining ring formula structure that drops and is connected with oil net fixed bolster, prevents that the screw from dropping the retaining ring formula structure and offers the through-hole that is used for wearing to establish the screw, and the inner wall of through-hole is equipped with the spacing portion that adopts flexible material, is equipped with the bulge on the screw, along spacing portion to the direction of pressing the splenium, the one end that the screw was equipped with the bulge penetrates the through-hole.
In the above arrangement, when the oil net is installed, the pressing part of the screw falling prevention snap ring structure is pressed by hand to clamp the oil net fixing support, then the limiting part of the screw falling prevention snap ring structure is made of flexible material, under the action of screw extrusion force, the limiting part of the screw falling prevention snap ring structure is elastically deformed, so that even if the diameter of the screw protruding part is larger than the inner diameter of the limiting part, the screw can pass through the screw falling prevention snap ring structure to be fixedly connected with the oil net, when the oil net is disassembled, the screw is loosened by the screwdriver, the screw falls under the self gravity, the protruding part of the screw contacts the limiting part of the screw falling prevention snap ring structure, at the moment, the protruding part can abut against the limiting part due to the fact that the diameter of the protruding part is larger than the inner diameter of the limiting part, and the protruding part of the screw is clamped by the limiting part to avoid the falling of the screw, the clamping ring type structure for preventing the screw from falling off is low in production cost, simple to install and suitable for popularization and application.
The embodiment of the utility model provides a range hood, including above-mentioned screw retaining ring formula structure that drops of preventing, corresponding, this oil net subassembly has all advantages of above-mentioned retaining ring formula structure, and here is no longer repeated.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view illustrating a screw drop prevention snap ring structure provided in an embodiment of the present invention being clamped to an oil net fixing bracket;
fig. 2 is a schematic structural view of a stop crack groove of a screw drop prevention snap ring structure provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a screw according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a combined state of a screw and a rivet nut provided by an embodiment of the present invention;
fig. 5 is a schematic structural view of a state in which a screw and a rivet nut are separated according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an oil screen assembly according to an embodiment of the present invention;
fig. 7 is an enlarged schematic view of the structure at a in fig. 6.
Icon: 1-pressing part; 2-a limiting part; 3-a clamping part; 4-a crack stop groove; 5-a clamping groove; 6-through holes; 7-riveting a nut; 8-a screw; 9-oil net; 10-oil net fixing support; 11-sinking a platform; 12-a guide ramp;
81-screw head; 82-a screw section; 83-projection.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1 and 3, the clasp type structure that prevents that screw from droing that this embodiment provided, including pressing splenium 1 and joint portion 3, press to form draw-in groove 5 between splenium 1 and the joint portion 3, draw-in groove 5 is used for preventing that the screw from droing clasp type structure and oil net fixed bolster 10 are connected, prevent that the screw from droing clasp type structure offers the through-hole 6 that is used for wearing to establish screw 8, the inner wall of through-hole 6 is equipped with the spacing portion 2 that adopts flexible material, be equipped with bulge 83 on the screw 8, along spacing portion 2 to the orientation of pressing splenium 1, the one end that screw 8 was equipped with bulge 83 can penetrate through-hole 6, and bulge 83 can with spacing portion.
In the above arrangement, when the oil net is installed, the pressing part 1 of the screw falling prevention snap ring structure is pressed by hand to clamp the oil net fixing support 10 by the clamping groove 5 of the screw falling prevention snap ring structure, then, because the limiting part 2 of the screw falling prevention snap ring structure is made of flexible material, under the action of the extrusion force of the screw 8, the limiting part 2 of the screw falling prevention snap ring structure is elastically deformed, so that even if the diameter of the screw convex part 83 is larger than the inner diameter of the limiting part 2, the screw 8 can pass through the screw falling prevention snap ring structure to be fixedly connected with the oil net, when the oil net is disassembled, the screw 8 is loosened by a screwdriver, the screw 8 falls under the self gravity, the convex part 83 of the screw contacts the limiting part 2 of the screw falling prevention snap ring structure, at the moment, because the diameter of the convex part 83 is larger than the inner diameter of the limiting part 2, the convex part can be abutted against the, thereby, spacing portion 2 blocks the bulge 83 of screw and drops in order to avoid the screw, and the clasp formula structure low in production cost that prevents that the screw from droing of this application scheme, the installation is simple, is fit for popularizing and applying.
It should be noted that, the above-mentioned screw falling-off prevention snap ring structure may be that only the limiting portion 2 is made of a flexible material, for example, the limiting portion 2 is made of rubber or plastic, and more specifically, the limiting portion 2 may be made of PVC plastic material, preferably, the limiting portion 2 is made of transparent PC material, and other portions of the screw falling-off prevention snap ring structure are made of rigid material, for example, stainless steel or alloy, and under an external acting force, the flexible limiting portion 2 may elastically deform, so that even if the diameter of the screw protruding portion 83 is greater than the inner diameter of the limiting portion 2, the screw 8 may pass through the limiting portion 2. Above-mentioned prevent that screw drops clasp formula structure can also be integrated into one piece, adopt flexible material, preferably adopt transparent PC, like this under the screw extrusion force, prevent that the screw drops clasp formula structure and take place elastic deformation, can make the bulge 83 of screw 8 pass spacing portion 2 smoothly, when dismantling screw 8, screw 8 receives self gravity whereabouts, because bulge 83 can with above-mentioned spacing portion 2 butt, screw 8 self gravity is not enough to make the bulge 83 of screw 8 break away from in the through-hole 6.
Specifically, the present embodiment further provides a detailed structure of the screw drop-proof snap ring structure.
Referring to fig. 1 and 4, in the present embodiment, the inner diameter of the stopper portion 2 is smaller than the inner diameter of the pressing portion 1.
Specifically, for the through hole 6, the inner diameter of the limiting portion 2 is smaller than the inner diameter of the pressing portion 1, and the screw 8 penetrates through the through hole 6 of the limiting portion 2 and penetrates out of the through hole 6 of the pressing portion 1, so that when the screw 8 is detached, the protruding portion 83 of the screw 8 can abut against the limiting portion 2, and the screw is prevented from being detached from the screw falling-prevention snap ring structure. If the internal diameter of spacing portion 2 is greater than or equal to the internal diameter of pressing the portion 1, be equivalent to no limit structure in the through-hole 6, when screw 8 was dismantled, can drop under the action of gravity of self, because screw 8 is small, easily loses, influences user experience.
Referring to fig. 3, in the present embodiment, the screw 8 further includes a screw head 81 and a screw shaft 82, an end of the screw 8 away from the screw head 81 is a protrusion 83, the screw shaft 82 is a smooth section, and a diameter of the protrusion 83 is larger than a diameter of the screw shaft 82.
Specifically, the protruding portion 83 may be located at an end portion far from the screw head 81, or at a middle portion of the smooth screw portion 82, or at a position from the middle portion of the screw portion 82 to an end portion far from the screw head 81, and wherever the protruding portion 83 is located, a smooth section is disposed between the protruding portion 83 and the screw head 81, so that when the screw 8 is detached, the protruding portion 83 abuts against the limiting portion 2, and the screw 8 does not fall down.
Wherein, above-mentioned bulge 83 can be the helicitic texture, also can be the lug, and the lug can be punctiform arch, realizes the fastening of screw 8 through the cooperation of lug and recess, and the preferred bulge 83 of this embodiment adopts the helicitic texture, and the external diameter of screw is greater than smooth section diameter, and like this, when dismantling screw 8, the helicitic texture and spacing 2 looks butt, because the gravity of screw 8 self is less, screw 8 just can not drop.
It should be noted that, in this embodiment, the protrusion 83 may not be provided, but a thread may be provided in the screw drop prevention snap ring structure, when the screw 8 is detached, the screw 8 is loosened by the screwdriver, the screw 8 falls under its own gravity, and is blocked by the thread in the screw drop prevention snap ring structure, so that the screw drop prevention function may also be performed.
Referring to fig. 1 and 5, in the present embodiment, the diameter of the protruding portion 83 of the screw 8 is larger than the inner diameter of the stopper portion 2, and the diameter of the protruding portion 83 of the screw 8 is smaller than the inner diameter of the pressing portion 1.
Specifically, the bulge 83 of the screw 8 preferably adopts a threaded structure, the outer diameter of the thread is greater than the inner diameter of the limiting part 2, the limiting part 2 preferably adopts a transparent PC plastic material, and thus, even if the diameter of the thread is greater than the inner diameter of the limiting part 2, the screw 8 can also pass through the limiting part, when the screw 8 is disassembled, the screw 8 falls under the self gravity, because the thread can be abutted against the limiting part 2, the self gravity of the screw 8 is not enough to cause the threaded structure to break away from the through hole 6, thereby causing the screw 8 not to fall off. The external diameter of screw thread is less than the internal diameter of pressing the portion 1, like this, the helicitic texture can not receive the hindrance when passing and pressing the portion 1, if the external diameter of screw thread is greater than the internal diameter of pressing the portion 1, when screw 8 wears to establish in through-hole 6, prevent that the screw from droing the snap ring formula structure and can receive the extrusion force by interior to exterior always, damage easily and prevent that the screw from droing the snap ring formula structure, when dismantling screw 8 in addition, the helicitic texture can block and press the portion 1 on, make the helicitic texture expose in the outside of preventing the screw from droing the snap ring formula structure.
Referring to fig. 3, in the present embodiment, the diameter of the screw portion 82 is Φ 3, and the difference between the diameter of the projection 83 and the diameter of the screw portion 82 is 1.1 mm.
Specifically, it is preferable that the diameter of the screw portion 82 of the screw 8 is phi 3, the outer diameter of the screw structure is 1.1mm larger than the diameter of the screw portion 82, and the outer diameter of the screw structure is larger than the diameter of the smooth section, so that when the screw 8 is disassembled, the screw structure abuts against the limiting portion 2, and the screw 8 does not fall down due to the small gravity of the screw 8. The difference of two diameters is too big or the undersize is not suitable, if it is too big to differ, the helicitic texture passes anti-screw drop formula snap ring structure and can be more difficult, even can pass anti-screw drop formula snap ring structure, anti-screw drop snap ring structure will certainly receive the extrusion force from inside to outside always, damage easily and prevent that the screw drops snap ring structure, if it differs the undersize, after dismantling screw 8, screw 8 is under self action of gravity and external factor, for example, receive external vibrations influence, probably break away from easily in the anti-screw drop formula snap ring structure, thereby can not play the effect of should preventing that screw 8 drops.
Referring to fig. 2, in the present embodiment, the screw drop-preventing snap ring structure further includes a crack-stopping groove 4, and the crack-stopping groove 4 is used to prevent the screw 8 from damaging the limiting portion 2.
It is specific, press the splenium 1 of pressing of preventing that the screw drops the snap ring type structure with the hand, prevent that the screw drops the in-process that the snap ring type structure got into oil net fixed bolster 10, crack arrest groove 4 plays the effect of buffer protection, and when screw 8 passes through spacing portion 2, the external diameter of helicitic texture is greater than spacing portion 2's internal diameter, prevent preferably that the screw from dropping the snap ring type structure and adopt transparent PC material, consequently when screw 8 passes through spacing portion 2, elastic deformation takes place for spacing portion 2, spacing portion 2 cushions deformation through crack arrest groove 4, avoid 8 screw thread sections of screw to destroy spacing portion 2.
With reference to fig. 1, in this embodiment, a guiding inclined plane 12 is disposed on a side of the clamping portion 3 away from the clamping slot 5, and is used for guiding the clamping ring structure for preventing the screw from falling off to be clamped with the oil net fixing bracket 10.
Specifically, a clamping groove 5 is formed between one side of the clamping portion 3 and the pressing portion 1, the screw falling prevention clamping ring type structure is connected with the oil net fixing support 10, a guide inclined plane 12 is arranged on one side, away from the clamping groove 5, of the clamping portion 3, a clamping block on the oil net fixing support 10 clamped with the clamping groove 5 also forms an inclined plane, and the angles of the two inclined planes are close or the same. Thus, the screw drop-off prevention snap ring structure is more easily connected with the oil net fixing bracket 10 by the guide slope 12.
Referring to fig. 4, 6 and 7, in the present embodiment, the screw 8 passes through the screw falling prevention snap ring structure and is locked with the rivet nut 7, the rivet nut 7 is fixed on the side wall of one end of the oil screen 9, and the other end of the oil screen 9 opposite to the rivet nut 7 is provided with a pin for inserting into the oil screen fixing bracket 10.
Specifically, one side of the oil screen 9 is provided with a pin, and the other side of the oil screen is provided with a rivet nut 7, wherein the pin is used for inserting the oil screen fixing support 10, the screw 8 penetrates through the screw falling prevention snap ring structure and is locked with the rivet nut 7, and the oil screen 9 and the oil screen fixing support 10 are arranged in the smoke collection cavity. The rivet nut 7 is riveted on the oil screen 9, the screw falling prevention snap ring structure is fixed on the oil screen fixing support 10, the oil screen fixing support 10 is fixed on the smoke collection cover, and the screw 8 fixes the oil screen 9 through the rivet nut 7 riveted on the oil screen and the plastic snap ring fixed on the oil screen fixing support 10.
It should be noted that the nut may also be welded to the oil screen 9, and at this time, the screw 8 passes through the screw drop-proof snap ring structure and is locked with the nut, and since the nut is welded to the oil screen 9 to form a whole, when the screw 8 is locked with the nut, the screw 8 fixes the oil screen 9 through the nut welded to the oil screen and the screw drop-proof snap ring structure fixed to the oil screen fixing bracket 10.
Referring to fig. 5, in this embodiment, a through hole matched with the screw 8 is formed in the oil screen fixing support 10, and a sinking platform 11 is designed at the through hole.
Specifically, the oil net fixing bracket 10 is provided with a sunken platform 11, the sunken platform 11 is configured to match the shape of the screw head 81, and is preferably designed to be a conical sunken platform, so that when the screw 8 passes through the screw falling prevention snap ring structure to be fixedly connected with the oil net 9, the screw thread structure of the screw 8 is locked with the rivet nut 7, the screw head 81 is fixed in the conical sunken platform at this time, the space of the conical sunken platform is slightly larger than or just equal to the size of the screw head 81, and if the space of the sunken platform 11 is slightly smaller than the size of the screw head 81, when the screw 8 is locked with the rivet nut 7, the screw head 81 is exposed to the outside, which not only looks unsightly, but also may damage clothes or other things due to the exposed screw head 81.
Example two
The embodiment provides a range hood, which comprises the screw falling prevention type clamping ring structure in the embodiment.
The lampblack absorber that this embodiment provided, including above-mentioned screw fall off formula snap ring structure, corresponding, this lampblack absorber has above-mentioned all advantages of screw fall off formula snap ring structure of preventing, and this here is no longer repeated.
It should be noted that, in the case of conflict, the features in the embodiments of the present invention may be combined with each other.
Claims (10)
1. The utility model provides a prevent screw retaining ring formula structure that drops, its characterized in that, including pressing splenium (1) and joint portion (3), press splenium (1) with form draw-in groove (5) between joint portion (3), draw-in groove (5) be used for with prevent that screw drops retaining ring formula structure and oil net fixed bolster (10) are connected, prevent that screw drops retaining ring formula structure and offer through-hole (6) that are used for wearing to establish screw (8), the inner wall of through-hole (6) is equipped with spacing portion (2) that adopt flexible material to make, be equipped with bulge (83) on screw (8), along spacing portion (2) extremely press the direction of splenium (1), the one end that screw (8) were equipped with bulge (83) penetrates through-hole (6), just bulge (83) can with spacing portion (2) butt.
2. The screw drop-off prevention snap ring structure according to claim 1, wherein the inner diameter of the limiting portion (2) is smaller than the inner diameter of the pressing portion (1).
3. The screw drop-off prevention snap ring structure according to claim 2, wherein the screw (8) further comprises a screw head (81) and a screw shaft (82), wherein the end of the screw (8) away from the screw head (81) is the protrusion (83), the screw shaft (82) is a smooth section, and the diameter of the protrusion (83) is larger than that of the screw shaft (82).
4. The screw drop-off prevention snap ring structure according to claim 3, wherein the diameter of the protruding part (83) of the screw (8) is larger than the inner diameter of the limiting part (2), and the diameter of the protruding part (83) of the screw (8) is smaller than the inner diameter of the pressing part (1).
5. The screw drop-off prevention snap ring structure according to claim 3, wherein the diameter of the screw portion (82) is φ 3, and the difference between the diameter of the protrusion (83) and the diameter of the screw portion (82) is 1.1 mm.
6. The screw drop-off prevention snap ring structure according to claim 1, further comprising a crack stop groove (4), wherein the crack stop groove (4) is used for preventing the screw (8) from damaging the limiting portion (2).
7. The screw drop-proof snap ring structure according to claim 1, wherein a guiding inclined plane (12) is arranged on one side of the snap portion (3) away from the snap groove (5) for guiding the screw drop-proof snap ring structure to be snapped with the oil net fixing support (10).
8. The screw drop-off prevention snap ring structure according to claim 7, characterized in that the screw (8) passes through the screw drop-off prevention snap ring structure and is locked with a rivet nut (7), the rivet nut (7) is fixed on the side wall of one end of the oil screen (9), and the other end of the oil screen (9) opposite to the rivet nut (7) is provided with a pin which is inserted into the oil screen fixing support (10).
9. The screw drop-proof snap ring structure according to any one of claims 1 to 8, wherein the oil net fixing support (10) is provided with a through hole matched with the screw (8), and the through hole is designed with a sinking platform (11).
10. A range hood, characterized by comprising the screw drop-proof snap ring structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462625.7U CN212691892U (en) | 2020-07-22 | 2020-07-22 | Screw falling prevention clamp ring type structure and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462625.7U CN212691892U (en) | 2020-07-22 | 2020-07-22 | Screw falling prevention clamp ring type structure and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212691892U true CN212691892U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021462625.7U Active CN212691892U (en) | 2020-07-22 | 2020-07-22 | Screw falling prevention clamp ring type structure and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212691892U (en) |
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2020
- 2020-07-22 CN CN202021462625.7U patent/CN212691892U/en active Active
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