A protective mechanism and shearing device using the same

Abstract

The present invention discloses a protective mechanism and a shearing device using the same, and relates to the technical field of chip, dust and water prevention of power transmission components, including a connecting part, a movable part and a connecting rod, the outer side of the connecting part is formed with a connecting groove connected to the inside of the connecting part, one end of the connecting rod passes through the connecting part from the connecting groove and is dynamically connected to the movable part, a stretchable and shrinkable protective sleeve is sleeved on the part of the connecting rod that passes through the connecting groove, one end of the protective sleeve is fixed on the connecting part and corresponds to the sealed connecting groove, and the other end of the protective sleeve is sealed and fixed on the connecting rod or the movable part, a first protective shell is connected to the connecting part, the first protective shell is sleeved outside the protective shell, and at least one discharge hole connected to the inside of the first protective shell is formed on the outer side of the first protective shell, and the overall chip, dust and water prevention and waterproof effects are excellent through the design of the protective sleeve, the first protective shell and the discharge hole.

Description

Technical Field

[0001] The present invention relates to the technical field of chip, dust and water resistance of power transmission components, and in particular to a protection mechanism and a shearing device using the same. Background Art

[0002] The power transmission component refers to the component that directly or indirectly transmits the power generated by the equipment to the power-using parts. It is an indispensable component of the power equipment. Mainly, the power transmission component can avoid direct contact between the power-using parts and the power source of the equipment to reduce damage to both parties. The power transmission component can also change the direction and magnitude of the force, so that the power-using parts can move in the set direction and at the set speed.

[0003] At present, there are many designs for anti-chip, dust-proof and waterproof of power transmission components. Figure 1 As shown, the movable part 11 is located outside the connecting part 10, and the power input end in the connecting part 10 is connected to the movable part 11 through the connecting rod 12. When the power of the power source reaches the movable part 11 from the power input end, the connecting rod 12 drives the movable part 11 to make the movable part 11 move relative to the connecting part 10, and a chip retaining ring 3 is provided at the opening corresponding to the connecting rod 12 on the connecting part 10. Although the chip retaining ring 3 can play a partial blocking role, since there is an active gap 4 between the chip retaining ring 3 and the outer surface of the connecting rod 12 to meet the movement of the connecting rod 12, whether the connecting rod 12 moves in a straight line or a curve, the chip retaining ring 3 can only block large debris, and dust, water and smaller debris can enter the connecting part 10 through the active gap 4, thereby affecting the transmission mechanism or circuit components in the connecting part 10, which is also one of the important reasons for frequent failures of the equipment after a period of use. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protection mechanism, comprising a connecting part, a movable part and a connecting rod, wherein a connecting groove connected to the inside of the connecting part is formed on the outer side of the connecting part, one end of the connecting rod passes through the connecting part from the connecting groove and is dynamically connected to the movable part, a stretchable and shrinkable protective cover is sleeved on the part of the connecting rod that passes through the connecting groove, one end of the protective cover is fixed on the connecting part and corresponds to the sealed connecting groove, and the other end of the protective cover is sealed and fixed on the connecting rod or the movable part; a first protective shell is connected to the connecting part, the first protective shell is arranged outside the protective shell, and at least one discharge hole connected to the inside of the first protective shell is formed on the outer side of the first protective shell.

[0006] As a further solution of the present invention: the discharge hole is located on the first protective shell near the connecting groove.

[0007] As a further solution of the present invention: a connecting seat ring is formed at a portion of the protective sleeve that is sealed with the connecting portion, and at least one sealing ring is formed on the outside of the connecting seat ring; a seat ring fixing groove that cooperates with the connecting seat ring is formed on the inner wall of the connecting groove, and a sealing groove that cooperates with the sealing ring is formed on the inner wall of the seat ring fixing groove.

[0008] As a further solution of the present invention: one end of the protective sleeve away from the connecting part is sealed and fixed on the movable part; a buckle ring with an inward contraction is formed at the portion of the protective sleeve that is sealed and fixed to the movable part; an annular groove corresponding to the buckle ring is formed on the outer side of the movable part, and at least one truncated cone-shaped guide slope that cooperates with the buckle ring is also formed on the movable part.

[0009] As a further solution of the present invention: a reinforcement portion surrounding the protective sleeve is arranged on the protective sleeve.

[0010] As a further solution of the present invention: the reinforcement part is spirally wrapped around the protective sleeve, the reinforcement part is connected to the outer side of the protective sleeve and the outer side of the protective sleeve is correspondingly formed with a spiral guide groove; the width direction cross section of the inner wall of the first protective shell is circular.

[0011] As a further solution of the present invention: the first protective shell has a cylindrical inner wall.

[0012] As a further solution of the present invention: the protective cover is arranged in a truncated cone shape which gradually decreases from one end connected to the connecting part to the other end.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the sealed protective cover is used to prevent external debris, dust, and water from entering the connecting part and thus affecting the transmission mechanism or circuit elements in the connecting part, making it safer to use; the first protective shell is used to protect the protective cover to prevent the protective cover from cracking due to collision or scratches by external objects during use, thereby effectively ensuring the service life of the protective cover; on the one hand, the discharge hole allows debris and dust to be squeezed out of the discharge hole as the protective cover stretches / contracts, and on the other hand, water can be discharged through the discharge hole, and the water can bring out debris and dust while being discharged from the discharge hole, achieving excellent overall anti-chip, dust-proof and waterproof effects.

[0014] The present invention also provides a shearing device, comprising the above-mentioned protection mechanism, wherein the shearing device comprises a movable knife part which is dynamically connected to the movable part.

[0015] As a further solution of the present invention: the shearing device also includes a second protective shell connected to the first protective shell, the second protective shell is sleeved on the movable part, and the outer side of the second protective shell is formed with a movable groove connected to the interior of the second protective shell, and the movable groove corresponds to the movable trajectory of the movable knife part.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the shearing device is used in scenarios such as pruning, harvesting, and cutting where waste debris, dust, or splashing water is likely to be generated, the generated waste debris, dust, and splashing water will be blocked by the first protective shell and the first protective cover, preventing external debris, dust, and water from entering the connecting part and affecting the transmission mechanism or circuit elements in the connecting part, making it safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a chip retaining ring provided in the prior art;

[0018] Figure 2 It is a structural stereogram of the protection mechanism in the present invention;

[0019] Figure 3 It is a structural front view of the protection mechanism in the present invention;

[0020] Figure 4 yes Figure 3 The cross-section along the AA direction;

[0021] Figure 5 yes Figure 4 A magnified schematic diagram of the local structure at B in the middle;

[0022] Figure 6 yes Figure 4 A magnified schematic diagram of the local structure at C in the middle;

[0023] Figure 7 It is a structural stereogram of the shearing device in the present invention;

[0024] Figure 8 yes Figure 7 The enlarged schematic diagram of the local structure at D in the middle;

[0025] Fig. 9 is another structural stereogram of the shearing device of the present invention;

[0026] The reference numerals and names in the figures are as follows:

[0027] Protection Agency-1,

[0028] Connecting part-10, movable part-11, connecting rod-12, connecting groove-13, protective cover-14, first protective shell-15, discharge hole-16, reinforcement part-17, guide groove-18,

[0029] Connect seat ring-100, sealing ring-101, seat ring fixing groove-102, sealing groove-103,

[0030] Buckle ring 110, annular groove 111, truncated cone guide slope 112,

[0031] Shearing device-2,

[0032] Moving knife part-21, second protective shell-22, movable groove-23,

[0033] Chip guard -3, movable clearance -4. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 2-6 A protective mechanism includes a connecting portion 10, a movable portion 11 and a connecting rod 12. A connecting groove 13 connected to the inside of the connecting portion 10 is formed on the outer side of the connecting portion 10. One end of the connecting rod 12 passes through the connecting groove 13 and passes through the connecting portion 10 and is dynamically connected to the movable portion 11. The other end of the connecting rod 12 is a power input end. The power is transmitted to the movable portion 11 through the connecting rod 12, so that the movable portion 11 moves relative to the connecting portion 10.

[0036] Figure 4 The connecting rod 12 and the movable part 11 are shown to be connected by a screw connection. In other embodiments, the connecting rod 12 and the movable part 11 may also be connected by a snap connection, a latch connection, or the like. The purpose is to enable the connecting rod 12 to drive the movable part 11 to move the movable part 11 in a straight line, a curve, or the like relative to the connecting part 10.

[0037] A stretchable protective cover 14 is provided on the portion of the connecting rod 12 that passes through the connecting groove 13. One end of the protective cover 14 is fixed on the connecting portion 10 and corresponds to the sealed connecting groove 13, and the other end of the protective cover 14 is sealed and fixed on the connecting rod 12 or the movable portion 11. The protective cover 14 is used to prevent external debris, dust, water, etc. from entering the connecting portion 10, effectively preventing external debris, dust, water from entering the connecting portion 10 and affecting the transmission mechanism or circuit components in the connecting portion 10, and is safer to use.

[0038] The connecting portion 10 is connected to a first protective shell 15, which is sleeved outside the protective cover 14. The outer side of the first protective shell 15 is formed with at least one discharge hole 16 connected to the inside of the first protective shell 15. The first protective shell 15 is used to protect the protective cover 14 to prevent the protective cover 14 from being cracked due to collision or scratching by external objects during use, thereby effectively ensuring the service life of the protective cover 14.

[0039] During use, although the external debris, dust, water, etc. are isolated from the connecting portion 10 by the protective cover 14, the active space between the first protective shell 15 and the protective cover 14 still hides some debris, dust or water. The design of the discharge hole 16 can, on the one hand, allow the debris and dust to be squeezed out of the discharge hole 16 as the protective cover 14 stretches / contracts, and on the other hand, the water can be discharged through the discharge hole 16, and the water can take out the debris and dust when it is discharged from the discharge hole 16. The overall anti-chip, dust-proof and waterproof effects are excellent, and the protective cover can be better protected, and the service life is longer.

[0040] Preferably, the discharge hole 16 is located on the first protective shell 15 near the connecting groove 13. When discharging through the discharge hole 16, the movable part 11 can be located at the top and the connecting groove 13 can be located at the bottom. The water flows down from the top of the first protective shell 15 to the connection groove 13 and then is discharged from the discharge hole 16, so that the debris and dust deposited inside can be more easily taken out.

[0041] Preferably, a connection seat ring 100 is formed at the portion of the protective cover 14 that is sealed with the connection part 10, and at least one sealing ring 101 is formed on the outer side of the connection seat ring 100. A seat ring fixing groove 102 that matches the connection seat ring 100 is formed on the inner wall of the connection groove 13, and a sealing groove 103 that matches the sealing ring 101 is formed on the inner wall of the seat ring fixing groove 102. The provision of the sealing ring 101 makes it more difficult for external debris, dust, and water to enter the connection part 10 through the connection groove 13 after the protective cover 14 is fixed to the connection part 10 through the connection seat ring 100, and the sealing effect is better.

[0042] Preferably, the end of the protective cover 14 away from the connecting part 10 is sealed and fixed on the movable part 11, and the protective cover 14 can also prevent dust, water and debris on the part of the connecting rod 12 that is connected to the movable part 11. The part of the protective cover 14 that is sealed and fixed to the movable part 11 is formed with a buckle 110 that is contracted inward; the outer side of the movable part 11 is formed with an annular groove 111 corresponding to the buckle 110, and the movable part 11 is also formed with at least one truncated cone-shaped guiding inclined surface 112 that cooperates with the buckle 110. The provision of the truncated cone-shaped guiding inclined surface 112 makes it easier for the protective cover 14 to be fixed to the movable part 11, and convenient for installation.

[0043] For illustration, the stretchable and shrinkable property of the protective cover 14 can be provided by the material from which it is made, such as rubber, latex, plastic, silicone and the like, which are not listed one by one here.

[0044] In the embodiment of the present invention, the protective cover 14 is configured in a truncated cone shape that gradually decreases from one end connected to the connecting portion 10 to the other end. Compared with a straight cylindrical protective cover, when the protective cover 14 is shrunk to be squeezed, the truncated cone-shaped protective cover 14 can reduce the degree of squeezing of the protective cover 14 itself, and the protective cover 14 is not easily squeezed and cracked, and has better durability.

[0045] In the embodiment of the present invention, a reinforcement portion 17 surrounding the protective cover 14 is disposed on the protective cover 14 .

[0046] Specifically, the reinforcement part 17 is spirally wound around the protective cover 14. The provision of the reinforcement part 17 makes the protective cover 14 have better anti-telescopic fatigue performance, thereby making the protective cover 14 more durable.

[0047] Furthermore, the reinforcing portion 17 is connected to the outside of the protective cover 14 and a spiral guide groove 18 is formed on the outside of the protective cover 14. The width direction cross section of the inner wall of the first protective shell 15 is circular. When the water is discharged through the discharge hole 16 and the movable portion 11 is located at the top and the connecting groove 13 is located at the bottom: the water flows down from the top of the first protective shell 15 to the discharge hole 16 and then is discharged. During this period, since the inner wall of the first protective shell 15 and the outer surface of the protective cover 14 jointly form an activity space for limiting the flow direction of the water, the water close to the outer surface of the protective cover 14 will rotate in a spiral along the spiral guide groove 18, and under the action of gravity, the rotation speed will become faster and faster, and the corresponding centrifugal force will become larger and larger; at this time, the inner wall of the first protective shell 15 provides centripetal force for the rotating water until the rotating water reaches the part of the first protective shell 15 where the discharge hole 16 is set, and then is discharged from the discharge hole 16.

[0048] The water flows along the guide groove 18, which makes the protective cover 14 cleaner on the one hand, and on the other hand, the inner wall of the first protective shell 15 provides centripetal force for the rotating water, and the rotating water also flushes the inner wall of the first protective shell 15, making the inner wall of the first protective shell 15 cleaner.

[0049] When the discharge hole 16 is located at a position on the first protective shell 15 close to the connection groove 13, the rotation speed of the water reaches a high value before the water is discharged from the discharge hole 16, and the water is more likely to bring out the waste and dust in the first protective shell 15. The high-speed water can flush the connection groove 13 and the area near the connection groove 13, and has a good cleaning effect on the waste and dust deposited in these two places.

[0050] Please refer to Figure 4Preferably, the first protective shell 15 has a cylindrical inner wall, and discharges through the discharge hole 16, and when the movable part 11 is located at the top and the connecting groove 13 is located at the bottom, large objects can fall directly from the upper opening of the first protective shell 15 to the lower opening of the first protective shell 15, and are not easily blocked and adhered, which is conducive to timely discharge.

[0051] When the protective cover 14 is in a truncated cone shape that gradually decreases from one end connected to the connecting portion 10 to the other end, the water body rotates at a gradually increasing speed in the first protective shell 15, and the rotation radius of the water body also gradually increases. When the water body reaches a position flush with the discharge hole 16, the distance between the water body and the discharge hole 16 is greatly shortened, and the rotating water body can be more easily discharged from the first protective shell.

[0052] See also Figure 2-9 The present invention also discloses a shearing device, the shearing device 2 includes the above-mentioned protection mechanism 1, and the shearing device also includes a movable knife part 21 that is power-connected to the movable part 11. When the power source of the shearing device 2 is power-connected to the movable knife part 21 through the connecting rod 12, the user can perform shearing operations by cooperating with the movable knife part 21 and another movable knife part of the shearing device 2, or by cooperating with the movable knife part 21 and the fixed knife part of the shearing device 2. When used in specific applications such as pruning, harvesting, cutting, etc., which are prone to generate waste debris, dust or splashing water, the waste debris, dust, and splashing water generated by the application will be blocked by the first protective shell 15 and the protective cover 14 to prevent external debris, dust, and water from entering the connecting part 10 and affecting the transmission mechanism or circuit elements in the connecting part 10, making it safer to use.

[0053] Furthermore, the shearing device 2 also includes a second protective shell 22 connected to the first protective shell 15, the second protective shell 22 is sleeved on the movable part 11, and the outer side of the second protective shell 22 is formed with a movable groove 23 connected to the inside of the second protective shell 22, and the movable groove 23 corresponds to the movable track of the movable blade part 21. After the movable part 11 is connected to the movable blade part 21 by power, the movable track of the movable blade part 21 is mainly manifested as rotation. The design of the second protective shell 22 and the movable groove 23, on the one hand, serves the purpose of protecting the movable part 11, and on the other hand, narrows the passage into the first protective shell 15, so as to reduce waste, dust, and splashing water from entering the first protective shell 15, and the protection effect is better.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A protection mechanism, comprising a connecting part, a movable part and a connecting rod, wherein a connecting groove communicating with the inside of the connecting part is formed on the outer side of the connecting part, one end of the connecting rod passes through the connecting part from the connecting groove and is dynamically connected to the movable part, characterized in that: A stretchable and shrinkable protective sleeve is sleeved on the part of the connecting rod passing through the connecting groove, one end of the protective sleeve is fixed on the connecting part and corresponds to the sealed connecting groove, and the other end of the protective sleeve is sealed and fixed on the connecting rod or the movable part; The connecting portion is connected to a first protective shell, the first protective shell is sleeved outside the protective shell, and at least one discharge hole connected to the interior of the first protective shell is formed on the outer side of the first protective shell; The protective cover is provided with a reinforcement portion surrounding the protective cover; The reinforcement part is spirally wrapped around the protective sleeve, and the reinforcement part is connected to the outer side of the protective sleeve so that the outer side of the protective sleeve is correspondingly formed with a spiral guide groove; The cross section of the inner wall of the first protective shell in the width direction is circular.

2. A protection mechanism according to claim 1, characterized in that: The discharge hole is located on the first protective shell near the connecting groove.

3. A protection mechanism according to claim 2, characterized in that: A connection seat ring is formed at a portion of the protective sleeve that is sealed with the connection portion, and at least one sealing ring is formed on the outer side of the connection seat ring; The inner wall of the connecting groove is formed with a seat ring fixing groove matched with the connecting seat ring, and the inner wall of the seat ring fixing groove is formed with a sealing groove matched with the sealing ring.

4. A protection mechanism according to claim 2, characterized in that: One end of the protective sleeve away from the connecting portion is sealed and fixed on the movable portion; A buckle ring with an inwardly contracted opening is formed at a portion of the protective cover that is sealed and fixed to the movable part; An annular groove corresponding to the buckle ring is formed on the outer side of the movable part, and at least one truncated cone-shaped guiding inclined surface matched with the buckle ring is also formed on the movable part.

5. A protection mechanism according to claim 1, characterized in that: The first protective shell has a cylindrical inner wall.

6. A protection mechanism according to any one of claims 1 to 5, characterized in that: The protective cover is arranged in a truncated cone shape which gradually decreases from one end connected to the connecting part to the other end.

7. A shearing device, characterized in that: The protective mechanism comprises the protective mechanism described in any one of claims 1 to 6, and further comprises a movable knife part which is dynamically connected to the movable part.

8. A shearing device according to claim 7, characterized in that: The shearing device also includes a second protective shell connected to the first protective shell. The second protective shell is sleeved on the movable part. The outer side of the second protective shell is formed with a movable groove connected to the interior of the second protective shell. The movable groove corresponds to the movable trajectory of the movable knife part.

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