A drive protection structure and a packing device having the same.

Abstract

This utility model discloses a drive protection structure and a packaging device thereof. The structure utilizes a first protective member fixed to the housing and suspended above the exposed section of the rack to achieve a non-contact shielding structure. When the drive motor, in conjunction with the gear set, drives the rack to move, especially during the rack's return stroke, the first protective member effectively peels off or blocks foreign objects attached to the rack, preventing them from reaching the first opening of the housing and thus intruding into the meshing area between the rack and the gear set. This effectively avoids abnormal wear, jamming, and deterioration of transmission accuracy caused by foreign objects such as cat litter entering the meshing area between the gear set and the rack, significantly extending the device's lifespan. The structure, which maintains a gap between the first protective member and the exposed section of the rack, eliminates contact with the wear parts, reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structure design of automatic pet toilets, and in particular to a drive protection structure and a packing device having the same. Background Technology

[0002] The baling device in an automatic litter box is a key component for collecting and sealing feces. The baling device mainly consists of a fixed plate, a moving plate, and a drive mechanism. The drive mechanism typically comprises a motor, a gear set, and a rack. The motor drives the gear set to rotate, which in turn drives the rack, fixedly connected to the moving plate, in a linear motion, allowing the moving plate to move towards the fixed plate until they are in contact. When the moving plate and the fixed plate are tightly fitted, the baling bag is clamped and fixed in place. Then, a thermoforming element mounted on the fixed or moving plate heats and melts the baling bag in the clamped area, cutting it off and thus achieving the function of baling and sealing the feces.

[0003] However, existing rack and pinion drive designs have a significant drawback. During the process of cat litter falling into the bag to be packed below, some loose cat litter particles or other foreign objects can easily splash or fall onto the exposed rack surface. Because the rack needs to reciprocate frequently when driving the moving plate, these cat litter particles or foreign objects attached to the rack are easily carried into the precision meshing area between the rack and gears. Once hard cat litter particles enter the meshing surface, they will cause abnormal wear on the teeth of the rack and gears, significantly shortening the service life of the transmission components. More seriously, a large number of particles or particles of a certain size may directly cause the rack and gear to jam, causing the entire packing function to fail, severely affecting product reliability and user experience. Utility Model Content

[0004] The main purpose of this utility model is to propose a drive protection structure and a packing device having the same, which aims to solve the problems of the rack and pinion drive design of the existing packing device being prone to abnormal wear and reduced service life of the transmission components due to foreign object intrusion, as well as the transmission components jamming and packing device failure.

[0005] To achieve the above objectives, this utility model proposes a drive protection structure, comprising:

[0006] case;

[0007] A drive motor, which is mounted on the housing;

[0008] A gear set, which is mounted on the housing and connected to the drive motor for transmission.

[0009] A rack, which is movably inserted through the housing and meshes with the gear set for transmission, wherein the first end of the rack extends to the outside through a first opening on the housing to form an exposed section;

[0010] The first protective component is fixed to the housing and located above the exposed section. The first protective component maintains a gap with the exposed section to form a non-contact shielding structure, which is used to peel off or block foreign objects attached to the exposed section when the rack moves, so as to prevent foreign objects from reaching the first opening.

[0011] Preferably, a second protective component is also provided, which is fixed to the housing and located below the exposed section. The second protective component and the exposed section maintain a gap to form a non-contact shielding structure.

[0012] Preferably, the first opening is located on the front side of the housing, and a second opening is located on the rear side of the housing and is axially aligned with the first opening;

[0013] The first end of the rack extends through the first opening to the front of the housing;

[0014] The second end of the rack extends through the second opening to the rear of the housing;

[0015] The first protective component is fixed to the front sidewall of the housing.

[0016] Preferably, the housing includes a front panel having the first opening and a rear cover having the second opening;

[0017] The front panel is provided with a connected gear cavity and a guide cavity, the gear set is disposed in the gear cavity, and the first opening is the front opening of the guide cavity;

[0018] The rear cover is detachably disposed on the rear side of the front panel and covers the gear cavity and the guide cavity. The second opening communicates with the gear cavity and is axially aligned with the first opening to form the rear opening of the guide cavity.

[0019] The drive motor is fixed to the rear cover, and the actuator end of the drive motor extends into the gear cavity and is connected to the gear set for transmission.

[0020] Preferably, the rear cover is locked to the front panel by screws or by a first snap-fit ​​structure.

[0021] Preferably, the first protective component and the second protective component are respectively locked to the housing by screws or by a second snap-fit ​​structure.

[0022] Preferably, the front wall of the housing has a protrusion corresponding to the position of the gear set, and the protrusion covers the lateral contour of the gear set;

[0023] The first protective component includes a planar portion and a covering portion. The planar portion is fitted and fixed to a planar area of ​​the front wall of the housing. The covering portion extends from the edge of the planar portion toward the protrusion and covers a portion of the outer surface of the protrusion, and an assembly gap is maintained between the covering portion and the protrusion.

[0024] Preferably, the rack includes a vertically extending vertical portion and a horizontally extending horizontal portion;

[0025] The left side wall of the horizontal part is perpendicularly connected to the middle of the right side wall of the vertical part, and the right side wall of the horizontal part has a tooth-shaped structure that meshes with the gear set.

[0026] Preferably, the cross-section of the guide cavity is adapted to the cross-section of the rack;

[0027] The inner wall of the guide cavity is provided with a protrusion, the extension direction of the protrusion is the same as the extension direction of the rack, and an anti-sway gap is formed between the corresponding surfaces of the protrusion and the rack.

[0028] This utility model also proposes a packaging device, including a fixing component, a moving component, and a driving and protective structure;

[0029] The drive protection structure is the drive protection structure described above, and the moving part is fixedly connected to the first end of the rack.

[0030] This invention employs a first protective component fixed to the housing and suspended above the exposed section of the rack to achieve a non-contact shielding structure. When the drive motor, in conjunction with the gear set, drives the rack, especially during its return stroke, the first protective component effectively peels off or blocks foreign objects adhering to the rack, preventing them from reaching the first opening of the housing and thus intruding into the meshing area between the rack and gear set. This effectively avoids abnormal wear, jamming, and deterioration of transmission accuracy caused by foreign objects such as cat litter entering the meshing area of ​​the gear set and rack, significantly extending the device's lifespan. The structure, which maintains a gap between the first protective component and the exposed section of the rack, eliminates contact with the wear parts, reducing maintenance costs. Attached Figure Description

[0031] Figure 1 A three-dimensional view of the driving protective structure from the first angle;

[0032] Figure 2 A second-angle perspective view of the driving protective structure;

[0033] Figure 3 The first exploded view of the drive protection structure;

[0034] Figure 4 This is an exploded view of the drive protection structure from a second angle.

[0035] Figure 5 This is a schematic diagram of the packaging device. Detailed Implementation

[0036] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0037] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0039] This utility model proposes a drive protection structure.

[0040] In this embodiment of the utility model, such as Figures 1 to 5 As shown, the drive protection structure includes a housing 1, a drive motor 2, a gear set 3, a rack 4, and a first protective component 5.

[0041] The drive motor 2 is mounted on the housing 1; the gear set 3 is mounted on the housing 1 and is connected to the drive motor 2 for transmission; the rack 4 is movably inserted through the housing 1 and meshes with the gear set 3 for transmission, and the first end of the rack 4 extends to the outside through the first opening 100 on the housing 1 to form an exposed section; the first protective member 5 is fixed to the housing 1 and located above the exposed section, and the first protective member 5 maintains a gap with the exposed section to form a non-contact shielding structure, which is used to peel off or block foreign objects attached to the exposed section when the rack 4 moves, so as to prevent foreign objects from reaching the first opening 100, thereby preventing foreign objects from intruding into the meshing area of ​​the rack 4 and the gear set 3.

[0042] Specifically, in one embodiment, a second protective member is also provided. The second protective member is fixed to the housing 1 and located below the exposed section. The second protective member and the exposed section maintain a gap to form a non-contact shielding structure, thereby improving the protection effect of the corresponding meshing area.

[0043] Specifically, the first opening 100 is provided on the front side of the housing 1, and the rear side of the housing 1 is provided with a second opening 200 that is axially aligned with the first opening 100;

[0044] The first end of the rack 4 extends through the first opening 100 to the front of the housing 1;

[0045] The second end of the rack 4 extends through the second opening 200 to the rear of the housing 1;

[0046] The first protective component 5 is fixed to the front side wall of the housing 1.

[0047] Specifically, in this embodiment, in order to facilitate the installation of the gear set 3 and the rack 4, the housing 1 includes a front panel 11 with the first opening 100 and a rear cover 12 with the second opening 200.

[0048] The front panel 11 is provided with a gear cavity 13 and a guide cavity 14 that are connected. The gear set 3 is disposed in the gear cavity 13, and the first opening 100 is the front opening of the guide cavity 14.

[0049] The rear cover 12 is detachably disposed on the rear side of the front panel 11 and covers the gear cavity and the guide cavity 14. The second opening 200 communicates with the gear cavity and is axially aligned with the first opening 100 to form the rear opening of the guide cavity 14.

[0050] The drive motor 2 is fixed to the rear cover 12, and the actuating end of the drive motor 2 extends into the gear cavity and is connected to the gear set 3 for transmission.

[0051] Specifically, the rear cover 12 is locked to the front panel 11 by screws or by a first snap-fit ​​structure.

[0052] Specifically, the first protective component 5 and the second protective component are respectively locked to the housing 1 by screws or by a second snap-fit ​​structure.

[0053] Specifically, in this embodiment, due to the influence of the lateral profile of the gear, a protrusion 15 is formed on the front wall of the housing 1 at the position corresponding to the gear set 3, and the protrusion 15 covers the lateral profile of the gear set 3.

[0054] The first protective member 5 includes a flat portion 51 and a covering portion 52. The flat portion 51 is fitted and fixed to the flat area of ​​the front wall of the housing 1. The covering portion 52 extends from the edge of the flat portion 51 toward the protrusion 15 and covers a portion of the outer surface of the protrusion 15. An assembly gap is maintained between the covering portion 52 and the protrusion 15.

[0055] Specifically, the rack 4 includes a vertically extending vertical portion 41 and a horizontally extending horizontal portion 42;

[0056] The left side wall of the horizontal part 42 is perpendicularly connected to the middle of the right side wall of the vertical part 41, and the right side wall of the horizontal part 42 has a tooth-shaped structure that meshes with the gear set 3.

[0057] Specifically, the cross-section of the guide cavity 14 is compatible with the cross-section of the rack 4;

[0058] The inner wall of the guide cavity 14 is provided with a protrusion 16, the extension direction of the protrusion 16 is the same as the extension direction of the rack 4, and an anti-sway gap is formed between the corresponding surfaces of the protrusion 16 and the rack 4 to improve the stability of the rack 4 during movement.

[0059] Specifically, the first and second protective components are made of silicone, plastic, or metal.

[0060] This utility model also proposes a packaging device, including a fixing member 6, a moving member 7 and a driving and protective structure, wherein the moving member 7 is fixedly connected to the first end of the rack 4;

[0061] Please refer to the above embodiments for the specific structure of the drive protection structure. Since this packaging device adopts all the technical solutions of all the above embodiments of the drive protection structure, it has at least all the beneficial effects brought about by the technical solutions of the above drive protection structure, and will not be described in detail here.

[0062] It should be noted that the packaging device also includes a hot melt assembly disposed on the fixed part and / or the moving part. For details, please refer to the prior art. The specific structural principle will not be described in detail here.

[0063] This invention employs a first protective component fixed to the housing and suspended above the exposed section of the rack to achieve a non-contact shielding structure. When the drive motor, in conjunction with the gear set, drives the rack, especially during its return stroke, the first protective component effectively peels off or blocks foreign objects adhering to the rack, preventing them from reaching the first opening of the housing and thus intruding into the meshing area between the rack and gear set. This effectively avoids abnormal wear, jamming, and deterioration of transmission accuracy caused by foreign objects such as cat litter entering the meshing area of ​​the gear set and rack, significantly extending the device's lifespan. The structure, which maintains a gap between the first protective component and the exposed section of the rack, eliminates contact with the wear parts, reducing maintenance costs.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A drive protection structure, characterized in that, include: Shell (1); Drive motor (2), the drive motor (2) is mounted on the housing (1); Gear set (3), the gear set (3) is installed in the housing (1) and is connected to the drive motor (2) in a transmission manner; A rack (4) is movably inserted through the housing (1) and meshes with the gear set (3) for transmission. The first end of the rack (4) extends to the outside through the first opening (100) on the housing (1) to form an exposed section. The first protective member (5) is fixed to the housing (1) and located above the exposed section. The first protective member (5) maintains a gap with the exposed section to form a non-contact shielding structure, which is used to peel off or block foreign objects attached to the exposed section when the rack (4) moves, so as to prevent foreign objects from reaching the first opening (100).

2. The drive protection structure as described in claim 1, characterized in that: A second protective component is also provided. The second protective component is fixed to the housing (1) and located below the exposed section. The second protective component and the exposed section maintain a gap to form a non-contact shielding structure.

3. The drive protection structure as described in claim 1, characterized in that: The first opening (100) is located on the front side of the housing (1), and the rear side of the housing (1) is provided with a second opening (200) that is axially aligned with the first opening (100). The first end of the rack (4) extends through the first opening (100) to the front of the housing (1); The second end of the rack (4) extends through the second opening (200) to the rear of the housing (1); The first protective component (5) is fixed to the front side wall of the housing (1).

4. The drive protection structure as described in claim 3, characterized in that: The housing (1) includes a front panel (11) having the first opening (100) and a rear cover (12) having the second opening (200). The front panel (11) is provided with a gear cavity (13) and a guide cavity (14) that are connected. The gear set (3) is located in the gear cavity (13). The first opening (100) is the front opening of the guide cavity (14). The rear cover (12) is detachably disposed on the rear side of the front panel (11) and covers the gear cavity (13) and the guide cavity (14). The second opening (200) communicates with the gear cavity (13) and is axially aligned with the first opening (100) to form the rear opening of the guide cavity (14). The drive motor (2) is fixed to the rear cover (12), and the actuating end of the drive motor (2) extends into the gear cavity (13) and is connected to the gear set (3) for transmission.

5. The drive protection structure as described in claim 4, characterized in that: The rear cover (12) is locked to the front panel (11) by screws or by a first snap-fit ​​structure.

6. The drive protection structure as described in claim 2, characterized in that: The first protective component (5) and the second protective component are respectively locked to the housing (1) by screws or by a second snap-fit ​​structure.

7. The drive protection structure as described in claim 3, characterized in that: The front wall of the housing (1) has a protrusion (15) corresponding to the position of the gear set (3), and the protrusion (15) covers the lateral contour of the gear set (3). The first protective component (5) includes a flat portion (51) and a covering portion (52). The flat portion (51) is fitted and fixed to the flat area of ​​the front wall of the housing (1). The covering portion (52) extends from the edge of the flat portion (51) toward the protrusion (15) and covers a portion of the outer surface of the protrusion (15). An assembly gap is maintained between the covering portion (52) and the protrusion (15).

8. The drive protection structure as described in claim 4, characterized in that: The rack (4) includes a vertically extending vertical portion (41) and a horizontally extending horizontal portion (42). The left side wall of the horizontal part (42) is vertically connected to the middle of the right side wall of the vertical part (41), and the right side wall of the horizontal part (42) is a tooth-shaped structure that meshes with the gear set (3).

9. The drive protection structure as described in claim 8, characterized in that: The cross-section of the guide cavity (14) is compatible with the cross-section of the rack (4); The inner wall of the guide cavity (14) is provided with a protrusion (16), the extension direction of the protrusion (16) is the same as the extension direction of the rack (4), and an anti-sway gap is formed between the corresponding surfaces of the protrusion (16) and the rack (4).

10. A packaging device, characterized in that: It includes a fixing member (6), a moving member (7), and a drive protection structure as described in any one of claims 1-9; The movable part (7) is fixedly connected to the first end of the rack (4).

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