Push rod assembly and range hood

Abstract

The utility model provides a push rod assembly and a range hood, relates to kitchen appliance technical field, the push rod assembly includes: casing, separator, seal, drive mechanism and push rod, the casing includes the end face, the end face is provided with the first through-hole that runs through the casing inside and outside, the push rod passes through the first through-hole, the first through-hole passes through the seal, the first through-hole passes through the seal, the first through-hole passes through the seal, and the second through-hole passes through the seal. The sealing piece is arranged between the push rod and the first through hole; the partition piece and the driving mechanism are both located in the shell, and the driving mechanism is connected with the push rod and used for driving the push rod to do telescopic motion; and the separator is arranged between the driving mechanism and the end surface and is used for separating the driving mechanism from the first through hole.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a push rod assembly and a range hood. Background Art

[0002] In order to improve the smoke collecting effect of a range hood, a closable smoke collecting plate is generally arranged at the smoke inlet to improve the smoke collecting effect. The smoke collecting plate is generally pushed by an electric push rod to realize opening and closing control.

[0003] Currently, driving components such as motors of the push rod device installed in the range hood are generally directly exposed to oil fumes, resulting in a reduced service life and overall affecting the service life of the range hood. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a push rod assembly and a range hood to alleviate the technical problem of the short service life of the existing push rod driving mechanism.

[0005] In a first aspect, a push rod assembly provided by the utility model includes: a housing, a partition, a seal, a driving mechanism, and a push rod. The housing includes an end face, and a first through hole penetrating inside and outside the housing is provided on the end face. The push rod passes through the first through hole, and the seal is arranged between the push rod and the first through hole;

[0006] Both the partition and the driving mechanism are located inside the housing. The driving mechanism is connected to the push rod and is used to drive the push rod to perform telescopic movement;

[0007] The partition is arranged between the driving mechanism and the end face and is used to separate the driving mechanism from the first through hole.

[0008] Further, the driving mechanism includes a linear driving module; the partition is relatively fixed to the housing;

[0009] A second through hole for the push rod to pass through is provided on the partition. One end of the push rod is connected to the linear driving module, and the other end passes through the second through hole and the first through hole in sequence and is located outside the housing.

[0010] Further, a concavo-convex structure is provided on the inner wall of the second through hole, and the concavo-convex structure abuts against the outer wall of the push rod.

[0011] Further, the concavo-convex structure includes protrusions and depressions arranged alternately one by one along the length direction of the second through hole, and the top of the protrusion abuts against the outer wall of the push rod.

[0012] Further, one end of the second through hole close to the first through hole is butted against the first through hole.

[0013] Further, the partition is slidably connected to the housing;

[0014] The driving end of the driving mechanism is connected to one side of the partition member, and one end of the push rod is connected to the opposite side of the partition member. The driving mechanism drives the push rod to perform telescopic movement by driving the partition member;

[0015] The cavity formed between the partition member and the end face is separated from the cavity where the driving mechanism is located by the partition member and is independent of each other.

[0016] Further, the partition member includes a first side wall and a second side wall arranged at intervals along the movement direction of the push rod, and the first side wall and the second side wall have the same movement state;

[0017] The driving mechanism includes a cam, and the cam can rotate relative to the housing; the cam is located between the first side wall and the second side wall, and the rotating cam can alternately push the first side wall and the second side wall to make the partition member move reciprocally.

[0018] Further, the driving mechanism includes a linear driving module, the driving end of the linear driving module is connected to one side wall of the partition member, and the push rod is connected to the opposite side wall of the partition member.

[0019] Further, the seal is fixedly connected to the inner wall of the first through hole.

[0020] In a second aspect, an oil fume machine provided by the present utility model includes the above-mentioned push rod assembly.

[0021] The present utility model has at least the following advantages or beneficial effects:

[0022] The push rod assembly provided by the present utility model includes: a housing, a partition member, a seal, a driving mechanism and a push rod. The housing includes an end face, and a first through hole penetrating the inside and outside of the housing is provided on the end face. The push rod passes through the first through hole, and the seal is arranged between the push rod and the first through hole; the partition member and the driving mechanism are both located inside the housing, and the driving mechanism is connected to the push rod for driving the push rod to perform telescopic movement; the partition member is arranged between the driving mechanism and the end face for separating the driving mechanism from the first through hole.

[0023] The seal arranged between the first through hole and the push rod can fill the gap between the two, reducing the entry of oil fume through the first through hole into the inside of the housing, thereby forming a primary protection. In order to further reduce the oil fume pollution of the driving mechanism, a partition member is further arranged between the driving mechanism and the end face. The partition member can isolate the area where the driving mechanism is located. Even if part of the oil fume enters the inside of the housing from the first through hole, it will be blocked between the partition member and the end face by the partition member, reducing the oil fume pollution of the driving mechanism. The partition member arranged inside the housing forms a secondary protection.

[0024] The oil fume machine provided by the present utility model includes the above-mentioned push rod assembly. Since the oil fume machine provided by the present utility model incorporates the above-mentioned push rod assembly, the oil fume machine provided by the present utility model also has the advantages of the push rod assembly. Brief Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic diagram of the push rod assembly provided in Embodiment 1 of the present utility model;

[0027] Figure 2 Schematic diagram of the internal structure of the push rod assembly provided in Embodiment 1 of the present utility model;

[0028] Figure 3 Schematic diagram of the internal structure of the push rod assembly provided in Embodiment 2 of the present utility model;

[0029] Figure 4 Schematic diagram of the internal structure of the push rod assembly provided in Embodiment 3 of the present utility model;

[0030] Figure 5 Schematic diagram of the internal structure of the range hood provided in the embodiment of the present utility model;

[0031] Figure 6 Side view of the range hood provided in the embodiment of the present utility model.

[0032] Reference Signs: 100 - Push rod assembly;

[0033] 110 - Housing; 111 - End face; 1141 - First cavity; 1142 - Second cavity;

[0034] 120 - Partition member; 121 - First side wall; 122 - Second side wall; 123 - Concavo-convex structure;

[0035] 131 - Cam; 132 - Rotary drive module; 133 - Linear drive module; 134 - Push rod motor base;

[0036] 140 - Push rod;

[0037] 172 - Seal;

[0038] 210 - Smoke collecting hood; 220 - Smoke guiding plate; 230 - Flow guiding plate. Detailed Embodiments

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0041] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0043] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0044] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0045] Embodiment 1

[0046] As Figure 1 and Figure 2 shown, the push rod assembly 100 provided by the present utility model includes: a housing 110, a partition 120, a seal 172, a driving mechanism, and a push rod 140.

[0047] The housing 110 includes an end face 111, and a first through hole penetrating inside and outside the housing 110 is provided on the end face 111, and the push rod 140 passes through the first through hole. The shape of the first through hole may be consistent with the cross-sectional shape of the push rod 140, but the cross-sectional area of the first through hole is slightly larger than the cross-sectional area of the push rod 140, and the seal 172 is provided between the push rod 140 and the first through hole. The seal 172 may be fixedly connected to the inner wall of the first through hole, and the push rod 140 passes through the seal 172, or the seal 172 may be covered on the outer wall of the push rod 140 to achieve a sliding seal between the seal 172 and the first through hole.

[0048] As Figure 2 shown, both the partition 120 and the driving mechanism are located inside the housing 110. The driving mechanism is connected to the push rod 140 and is used to drive the push rod 140 to perform telescopic movement. The partition 120 is provided between the driving mechanism and the end face 111 and is used to separate the driving mechanism from the first through hole to prevent the oil fume inside the end face 111 from entering the area where the driving mechanism is located.

[0049] The seal 172 provided between the first through hole and the push rod 140 can fill the gap between the two, reduce the oil stain from entering the inside of the housing 110 through the first through hole, and thus form a primary protection. In order to further reduce the oil fume from polluting the driving mechanism, a partition 120 is further provided between the driving mechanism and the end face 111. The partition 120 can isolate the area where the driving mechanism is located. Even if part of the oil fume enters the inside of the housing 110 from the first through hole, it will be blocked between the partition 120 and the end face 111 by the partition 120, reducing the driving mechanism from being polluted by the oil fume. The partition 120 provided inside the housing 110 forms a secondary protection.

[0050] In this embodiment, the driving mechanism includes a linear driving module; the partition 120 is relatively fixed to the housing 110; a second through hole for the push rod 140 to pass through is provided on the partition 120, one end of the push rod 140 is connected to the linear driving module, and the other end passes through the second through hole and the first through hole in sequence and is located outside the housing 110.

[0051] As Figure 2As shown in the figure, the linear drive module can be the push rod motor base 134, which is directly connected to the push rod 140. The push rod motor base 134 and the push rod 140 can form a complete push rod motor mechanism. The separator 120 can be fixedly connected to the outer shell 110 by means of gluing or screwing. The first through hole and the second through hole are coaxially arranged, and the push rod 140 passes through the second through hole and the first through hole respectively. The separator 120 plays a role in separation. Only the second through hole communicates with the inner area of the end face 111 and the area where the drive mechanism is located. However, since the push rod 140 passes through the second through hole and the gap between them is very small, the separator 120 will isolate the vast majority of oil fumes, achieving the purpose of protecting the drive mechanism.

[0052] Furthermore, as Figure 2 shown in the figure, the inner wall of the second through hole is provided with a concavo-convex structure 123, and the concavo-convex structure 123 abuts against the outer wall of the push rod 140.

[0053] In the natural state, the size of the cross-section of the hole surrounded by the concavo-convex structure 123 is slightly smaller than the cross-sectional area of the push rod 140. When the push rod 140 passes through the second through hole, the concavo-convex structure 123 provided on the inner wall of the second through hole can abut against the outer wall of the push rod 140. When abutting, the concavo-convex structure 123 produces a small deformation, and the gap between the second through hole and the outer wall of the push rod 140 becomes smaller, reducing the passage of oil fumes.

[0054] Specifically, the concavo-convex structure 123 includes protrusions and depressions arranged alternately one by one along the length direction of the second through hole. The top of the protrusion abuts against the outer wall of the push rod 140, and the longitudinal cross-sectional shape of the protrusion can be rectangular, triangular or semi-circular.

[0055] In this embodiment, the end of the second through hole close to the first through hole is butted against the first through hole. The concavo-convex structure 123 inside the second through hole is in close contact with the outer wall of the push rod 140, forming an airtight structure. It is not easy for the flue gas to pass through, so that it is more difficult for the flue gas to enter the first through hole, which can reduce the amount of oil fumes entering the space between the end face 111 and the separator 120, and avoid excessive oil accumulation inside the outer shell 110.

[0056] Embodiment 2

[0057] As Figure 3 shown in the figure, the difference from Embodiment 1 is that in this embodiment, the separator 120 is slidably connected to the outer shell 110. The driving end of the drive mechanism is connected to one side of the separator 120, and one end of the push rod 140 is connected to the opposite side of the separator 120. The drive mechanism drives the separator 120 to drive the push rod 140 to perform telescopic movement. The push rod 140 no longer passes through the separator 120. Instead, driven by the drive mechanism, the separator 120 and the push rod 140 move together. The cavity formed between the separator 120 and the end face 111 and the cavity where the drive mechanism is located are separated by the separator 120 and are independent of each other.

[0058] The housing 110 has an internal cavity inside. The partition 120 is disposed within the internal cavity. The partition 120 is slidably connected to the housing 110 and divides the internal cavity of the housing 110 into a first cavity 1141 and a second cavity 1142 that are independent of each other. The push rod 140 is located within the second cavity 1142, and one end of the push rod 140 is connected to the partition 120.

[0059] In this embodiment, the partition 120 is slidably connected to the housing 110 in a first direction. The driving mechanism is connected to the housing 110 and is located within the first cavity 1141. The driving mechanism and the push rod 140 are separated by the partition 120 to form an oil fume isolation, reducing the flow of oil fume on one side of the push rod 140 to the side of the driving mechanism.

[0060] Since the driving mechanism and the push rod 140 are respectively disposed in the mutually isolated first cavity 1141 and second cavity 1142, it is possible to reduce the oil contamination on one side of the push rod 140 from contaminating the driving mechanism, thereby avoiding the influence of oil fume on the driving mechanism, thereby increasing the service life of the driving mechanism and overall increasing the service life of the push rod assembly 100.

[0061] In this embodiment, the partition 120 includes a first side wall 121 and a second side wall 122 that are spaced apart along the movement direction of the push rod 140. The first side wall 121 and the second side wall 122 have the same movement state; the region between the first side wall 121 and the second side wall 122 forms the first cavity 1141; the driving mechanism includes a cam 131 and a rotary driving module 132. The rotary driving module 132 drives the cam 131 to rotate relative to the housing 110; the cam 131 is located between the first side wall 121 and the second side wall 122, and the rotating cam 131 can alternately push the first side wall 121 and the second side wall 122 to cause the partition 120 to move reciprocally.

[0062] The first side wall 121 and the second side wall 122 which are spaced apart are connected to each other and have the same motion state. In this embodiment, the separator 120 has a rectangular frame structure. The separator 120 includes a first cross beam, a first longitudinal beam, a second cross beam, and a second longitudinal beam that are sequentially connected end to end. The surface of the first longitudinal beam facing the second longitudinal beam forms the first side wall 121, and the surface of the second longitudinal beam facing the first longitudinal beam forms the second side wall 122. The cam 131 is located inside the separator 120. The position of the rotating shaft of the cam 131 relative to the housing 110 remains unchanged, and the rotating shaft and the cam 131 can only rotate relative to the housing 110. When the protruding end of the cam 131 rotates to contact the second side wall 122, the cam 131 will push the separator 120 toward the push rod 140 side; conversely, when the protruding end of the cam 131 rotates to contact the first side wall 121, the cam 131 will push the separator 120 away from the push rod 140 side. Among them, the cam 131 can be but is not limited to a Reuleaux triangle cam 131.

[0063] Embodiment 3

[0064] As Figure 4 shown, the difference from Embodiment 2 is that the driving mechanism includes a linear driving module 133. The driving end of the linear driving module 133 is connected to one side wall of the separator 120, and the push rod 140 is connected to the opposite side wall of the separator 120.

[0065] In this embodiment, the separator 120 can be a rod-shaped structure extending in the second direction. The separator 120 divides the internal cavity into two parts, the left part is the first cavity 1141, and the right part is the second cavity 1142. The linear driving module 133, such as a push rod motor, can be directly arranged on the left side of the separator 120, and the push rod 140 is arranged on the right side of the separator 120.

[0066] The linear driving module 133 can have multiple driving ends, and the multiple driving ends extend and retract synchronously, thereby increasing the stability of the movement of the separator 120.

[0067] As Figure 5 and Figure 6 shown, the range hood provided by the present utility model includes a smoke collecting hood 210, a smoke guiding plate 220, and the above-mentioned push rod assembly 100; the smoke collecting hood 210 has a smoke inlet; the smoke guiding plate 220 is movably connected to the smoke collecting hood 210; the housing 110 is connected to the smoke collecting hood 210, and the driving end of the push rod 140 is connected to the smoke guiding plate 220.

[0068] The telescopic push rod 140 can drive the smoke guide plate 220 to open or close. When the smoke guide plate 220 rotates to the closed position, it can seal and block the smoke inlet. When in the open position, it can expose the smoke inlet to the outside for oil fume and can gather the oil fume. The push rod assembly 100 of this range hood can seal and isolate the oil fume, thereby increasing the service life of the driving mechanism in the push rod assembly 100, and further increasing the service life of the range hood.

[0069] The smoke collecting hood 210 includes a smoke collecting hood 210 body and a flow guide plate 230 arranged inside the smoke collecting hood 210 body; the flow guide plate 230 divides the internal space of the smoke collecting hood 210 body into at least two parts, one of which has a smoke inlet; the outer shell 110 is connected to the flow guide plate 230, and the flow guide plate 230 is located in the other part.

[0070] In this embodiment, the number of the flow guide plates 230 is one, that is, one flow guide plate 230 divides the internal space of the smoke collecting hood 210 body into a first part and a second part. Among them, the first part has a smoke inlet, and the push rod assembly 100 is installed in the second part. The oil fume flowing in from the smoke inlet will be absorbed by the fan assembly. The flow guide plate 230 can reduce the overflow of the oil fume into the second part, and further reduce the oil fume concentration around the push rod assembly 100.

[0071] The push rod assembly 100 and the flow guide plate 230 can be connected by welding, or the outer shell 110 and the flow guide plate 230 can be connected by fasteners such as screws. The push rod assembly 100 and the flow guide plate 230 are relatively fixed, so that there is no need to add an installation structure, and the installation of the push rod assembly 100 can be stably realized. Most importantly, the push rod assembly 100 does not rotate relative to the flow guide plate 230, so there is no need to reserve the moving space for the push rod 140 device in the smoke collecting hood 210, thus facilitating the arrangement and installation of other components in the smoke collecting hood 210.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A push rod assembly, characterized in that: include: A housing (110), a partition (120), a sealing member (172), a driving mechanism and a push rod (140), wherein the housing (110) comprises an end surface (111), the end surface (111) is provided with a first through hole penetrating inside and outside of the housing (110), the push rod (140) passes through the first through hole, and the sealing member (172) is provided between the push rod (140) and the first through hole; The partition (120) and the driving mechanism are both located in the housing (110); the driving mechanism is connected to the push rod (140) and is used to drive the push rod (140) to perform telescopic movement; The partition (120) is arranged between the driving mechanism and the end surface (111) and is used to separate the driving mechanism from the first through hole.

2. The push rod assembly according to claim 1, characterized in that: The driving mechanism comprises a linear driving module; the partition (120) and the housing (110) are relatively fixed; The partition (120) is provided with a second through hole for the push rod (140) to pass through, one end of the push rod (140) is connected to the linear drive module, and the other end passes through the second through hole and the first through hole in sequence and is located outside the housing (110).

3. The push rod assembly according to claim 2, characterized in that: A concave-convex structure (123) is provided on the inner wall of the second through hole, and the concave-convex structure (123) abuts against the outer wall of the push rod (140).

4. The push rod assembly according to claim 3, characterized in that: The concave-convex structure (123) comprises protrusions and depressions that are alternately arranged one by one along the length direction of the second through hole, and the top of the protrusion abuts against the outer wall of the push rod (140).

5. The push rod assembly according to claim 2, characterized in that: One end of the second through hole close to the first through hole is butted against the first through hole.

6. The push rod assembly according to claim 1, characterized in that: The partition (120) is slidably connected to the housing (110); The driving end of the driving mechanism is connected to one side of the partition (120), and one end of the push rod (140) is connected to the other side of the partition (120), and the driving mechanism drives the push rod (140) to perform telescopic movement by driving the partition (120); The cavity formed between the partition (120) and the end surface (111) and the cavity where the driving mechanism is located are separated by the partition (120) and are independent of each other.

7. The push rod assembly according to claim 6, characterized in that: The partition (120) comprises a first side wall (121) and a second side wall (122) which are arranged at intervals along the moving direction of the push rod (140), and the first side wall (121) and the second side wall (122) have the same moving state; The driving mechanism comprises a cam (131) which is rotatable relative to the housing (110); the cam (131) is located between the first side wall (121) and the second side wall (122); the rotating cam (131) can alternately push the first side wall (121) and the second side wall (122) to make the partition (120) move back and forth.

8. The push rod assembly according to claim 6, characterized in that: The driving mechanism comprises a linear driving module (133), a driving end of the linear driving module (133) is connected to one side wall of the partition (120), and the push rod (140) is connected to the other opposite side wall of the partition (120).

9. The push rod assembly according to any one of claims 1 to 8, characterized in that: The sealing member (172) is fixedly connected to the inner wall of the first through hole.

10. A range hood, characterized in that: A push rod assembly comprising any one of claims 1 to 9.

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