Transmission mechanism and cable tie cutting device including it

Abstract

This utility model provides a transmission mechanism and a cable tie cutting device including the same. One end of the transmission mechanism is connected to the cutting head of a cable tie gun, and the other end is connected to a gripping part. It also includes: a first connecting rod, with a first end connected to the gripping part and a second end hinged to the side of the cable tie gun; the second end of the first connecting rod is also provided with a first support arm, which is disposed away from the cable tie gun; a second connecting rod, with a first end connected to the first support arm and a second end connected to the cutting head; and a Hooke hinge, with the first support arm and the second connecting rod connected via the Hooke hinge, and the second connecting rod and the cutting head connected via the Hooke hinge. The second connecting rod moves along the direction of movement of the cutting head via the Hooke hinge, and the first connecting rod moves along a direction other than the direction of movement of the cutting head via the Hooke hinge.

Description

Technical Field

[0001] This utility model specifically relates to a transmission mechanism and a cable tie cutting device including the same. Background Technology

[0002] Cable tie cutting refers to removing the excess portion of the cable tie after it has been tightened.

[0003] In existing technologies, the transmission mechanism used to drive the cutting head moves in a vertical swinging motion. Because this mechanism is located on the side of the cable tie gun and close to its handle, it comes into contact with the hand holding the handle during the vertical swinging motion. This means the operating space of the transmission mechanism overlaps with the space occupied by the hand holding the handle, resulting in a lack of dedicated operating space for the transmission mechanism. Furthermore, the vertical swinging motion not only easily causes the operator's hand to bump into the device, but the limited space also prevents it from swinging to the desired position, leading to incomplete cutting of excess cable tie and affecting cutting efficiency.

[0004] Therefore, there is a need for a mechanism that can drive the cutting head to effectively cut cable ties within a limited space. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defect in the prior art that the movement of the mechanism is limited in a limited space and cannot effectively cut the cable ties, and to provide a transmission mechanism and a cable tie cutting device including the thereof.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A transmission mechanism, one end of which is connected to the cutting head of a cable tie gun, and the other end of which is connected to a gripping part, the transmission mechanism further comprising:

[0008] A first link, the first end of which is connected to the grip, the second end of which is hinged to the side of the cable tie gun, and the second end of which is also provided with a first arm, which is disposed away from the cable tie gun.

[0009] The second link has a first end connected to the first support arm and a second end connected to the cutting head;

[0010] The first arm and the second link are connected by the Hooke hinge, and the second link and the cutting head are connected by the Hooke hinge. The second link moves along the direction of movement of the cutting head through the Hooke hinge, and the first link moves along a direction other than the direction of movement of the cutting head through the Hooke hinge.

[0011] Preferably, the second link swings along the vertical direction of the cable tie gun via the Hooke hinge and in the same direction as the movement of the cutting head, while the first link swings along the horizontal direction of the cable tie gun via the Hooke hinge.

[0012] In this solution, a Hooke's joint is installed between the first and second links. This allows the swing direction of the first link to change from swinging vertically along the cable tie gun to swinging horizontally along the cable tie gun. This overcomes the problem of interference between the first link or the grip and the hand holding the handle when swinging vertically, resulting in insufficient swing to cut the excess cable tie. A Hooke's joint is also installed between the second link and the cutting head. This ensures that the direction of the cutting head's movement remains constant through the two Hooke's joints. Simultaneously, when the first link swings, it pulls the second link to swing along the direction of the cutting head's movement, i.e., along the vertical direction of the cable tie gun, effectively driving the cutting head to cut the excess cable tie. Compared to shortening the extension dimension of the transmission mechanism and maintaining its vertical swing for cutting the cable tie, this solution changes the direction of the first link's movement without shortening its extension dimension. When driving the second link and the cutting head, the lever arm generating the force remains unchanged, making it more labor-saving and not limited by the space constraints of vertical swing.

[0013] Preferably, the extension length of the first link is greater than the extension length of the second link.

[0014] In this solution, the above settings ensure the size of the lever arm, making it easier for the transmission mechanism to drive the cutting head.

[0015] Preferably, the first link includes a first bent section, which is disposed away from the grip portion and located between a first end and a second end of the first link.

[0016] In this solution, the above-mentioned settings are used to lower the operating height of the grip, making it easier to operate.

[0017] Preferably, the angle between the first bent section and the gripping part is 45-90°.

[0018] In this solution, the above-mentioned settings limit the angle between the first bending section and the gripping part, thus ensuring ease of gripping.

[0019] Preferably, the second link includes a second bent section, which is disposed away from the grip portion and located between the first end and the second end of the second link.

[0020] In this scheme, with the above settings, compared to a straight second link, the second link with the second bend has a larger amplitude during movement and a better torque transmission effect.

[0021] Preferably, the angle between the second bent segment and the first end of the second connecting rod is 20-60°.

[0022] In this solution, the above-mentioned settings limit the angle between the second bending segment and the first end of the second connecting rod, thereby ensuring torque transmission efficiency.

[0023] Preferably, the transmission mechanism further includes a third link, the first end of which is connected to the second end of the second link via the Hooke's hinge, and the second end of the third link is connected to the cutting head.

[0024] In this solution, by increasing the number of connecting rods through the above settings, the direction of the cutting head movement remains unchanged based on the setting of two Hooke hinges, that is, the cutting head swings along the vertical direction of the cable tie gun.

[0025] Preferably, the extension length of the second link is greater than the extension length of the third link.

[0026] In this solution, the above settings are used to prevent the cutting head from deviating from the preset direction due to excessive extension of the third link during its movement.

[0027] A cable tie cutting device includes a transmission mechanism as described above, and further includes a protective component disposed between the handle of the cable tie gun and the cutting head.

[0028] In this solution, the cable tie cutting device includes the aforementioned transmission mechanism to overcome the problem of interference between the grip and the hand holding the handle when the grip swings up and down in the vertical direction of the cable tie gun, resulting in incomplete swinging and failure to cut the cable tie smoothly. Additionally, the cable tie cutting device includes a protective component to isolate the space between the handle and the cutting head, preventing the hand holding the handle from contacting the cutting head and causing injury to the operator, thus improving the safety of the cable tie cutting operation.

[0029] Preferably, the protective assembly includes a connector, a guide plate, and a baffle. The connector is perpendicular to the side of the cable tie gun, and one end of the connector is connected to the side of the cable tie gun. One end of the guide plate is connected to the cutting head, and the guide plate has a guide groove. The other end of the connector extends into the guide groove and slides within the guide groove. One end of the baffle is connected to the edge of the guide plate near the handle of the cable tie gun, and the other end of the baffle extends between the handle of the cable tie gun and the cutting head.

[0030] In this solution, the above-mentioned setup guides the cutting head during its movement via a guide plate. Simultaneously, the baffle connects to the edge of the guide plate near the handle of the cable ties gun and extends between the handle and the cutting head, effectively isolating the space between the hand holding the handle and the cutting head. This baffle then blocks the hand, preventing hand injury.

[0031] The significant advantages of this invention are as follows: By incorporating a Hooke's joint between the first and second links, the swing direction of the first link is changed from vertical to horizontal, overcoming the problem of interference between the first link or grip and the hand holding the handle when swinging vertically, resulting in insufficient cutting of excess cable ties. Furthermore, the Hooke's joint between the second link and the cutting head ensures that the cutting head's direction remains constant, preventing changes in the cutting method and making it suitable for existing cutting heads. Simultaneously, the swing of the first link pulls the second link along the cutting head's direction of movement, i.e., vertically, effectively driving the cutting head to cut off excess cable ties. Compared to shortening the extension dimension of the transmission mechanism and keeping the transmission mechanism swinging up and down along the vertical direction of the cable tie gun to cut the cable tie, the extension dimension of the first link is not shortened while the direction of movement of the first link is changed. When the second link and the cutting head are driven to move, the lever arm that generates the force is not shortened, which is more labor-saving and not limited by the space of up and down swing. Attached Figure Description

[0032] Figure 1 This diagram shows the positional relationship between the transmission mechanism and the cable tie gun in a preferred embodiment of the present invention.

[0033] Figure 2 This diagram shows the positional relationship between the protective component and the cutting head in a preferred embodiment of the present invention.

[0034] Figure 3 This diagram shows the positional relationship between the first bending segment and the second bending segment in a preferred embodiment of the present invention.

[0035] Figure 4 This is a perspective view of the transmission mechanism of a preferred embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] Cable tie gun 1

[0038] Cutting head 11

[0039] Handle 12

[0040] Holding part 2

[0041] First link 3

[0042] First end 31

[0043] Second end 32

[0044] First arm 33

[0045] First bend section 34

[0046] Second link 4

[0047] First end 41

[0048] Second end 42

[0049] Second bend section 43

[0050] Hooke's Hinge 5

[0051] Third link 6

[0052] First end 61

[0053] Second end 62

[0054] Protection Component 7

[0055] Connector 71

[0056] Guide plate 72

[0057] Guide groove 721

[0058] baffle 73

[0059] Vertical direction A

[0060] Horizontal direction B Detailed Implementation

[0061] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0062] This embodiment provides a transmission mechanism, the specific structure of which is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one end of the transmission mechanism is used to connect to the cutting head 11 of the cable tie gun 1, and the other end of the transmission mechanism is used to connect to the holding part 2. The transmission mechanism also includes:

[0063] The first link 3, the first end 31 of the first link 3 is connected to the grip part 2, the second end 32 of the first link 3 is hinged to the side of the cable tie gun 1, and the second end 32 of the first link 3 is also provided with a first support arm 33, which is disposed away from the cable tie gun 1.

[0064] The second link 4, the first end 41 of the second link 4 is connected to the first support arm 33, and the second end 42 of the second link 4 is connected to the cutting head 11;

[0065] Hooke hinge 5, first arm 33 and second link 4 are connected by Hooke hinge 5, second link 4 and cutting head 11 are connected by Hooke hinge 5, wherein the second link 4 moves along the movement direction of cutting head 11 through Hooke hinge 5, and the first link 3 moves along the movement direction of non-cutting head 11 through Hooke hinge 5.

[0066] In this embodiment, the second link 4 swings along the vertical direction A of the cable tie gun 1 via the Hooke hinge 5 and is in the same direction of movement as the cutting head 11, while the first link 3 swings along the horizontal direction B of the cable tie gun 1 via the Hooke hinge 5.

[0067] Specifically, the cable tie gun 1 includes a cutting head 11 and a handle 12. The cable tie gun 1 also includes several shafts for mounting cable ties and tightening them; this is an existing design and will not be elaborated upon here. The transmission mechanism is connected to the cutting head 11 to cut off the excess portion of the tightened cable tie. The transmission mechanism includes a grip 2, a first connecting rod 3, a second connecting rod 4, and two Hooke hinges 5. The Hooke hinges 5 are existing Hooke hinge structures, designed to increase the degrees of freedom of the transmission mechanism and thus change the direction of movement of the first connecting rod 3. It is understood that in existing technologies, the direction of movement of the transmission mechanism, also known as the swing direction, is the same as the direction of movement of the cutting head 11, i.e., swinging up and down along the vertical direction A of the cable tie gun 1 to drive the cutting head 11 to move up and down.

[0068] In this embodiment, a Hooke's hinge 5 is provided at the connection between the first arm 33 of the first link 3 and the second link 4 to change the swing direction of the first link 3 from vertically swinging up and down in the vertical direction A of the cable tie gun 1 to horizontally swinging left and right in the horizontal direction B of the cable tie gun 1. The second end 32 of the first link 3 is hinged to the side of the cable tie gun 1 to form a fulcrum. The first arm 33 and the second end 32 form a "Y"-shaped structure. The first arm 33 is provided with a mounting hole for mounting the pin of the Hooke's hinge 5. The mounting hole is set in the vertical direction A of the cable tie gun 1, while the groove formed by the ear plate of the Hooke's hinge 5 connected to the pin is set in the horizontal direction B of the cable tie gun 1. This changes the swing direction of the first arm 33 and the first link 3 from vertically A to horizontally B. This overcomes the situation where the first link 3 or the grip part 2 may interfere with the hand holding the handle 12 when swinging in the vertical direction A of the cable tie gun 1, and the swing is not in place and the excess part of the cable tie cannot be cut off.

[0069] In this embodiment, a Hooke hinge 5 is provided between the second link 4 and the cutting head 11 so that the movement direction of the cutting head 11 remains unchanged.

[0070] The second end 42 of the second link 4 is provided with a mounting hole for mounting the pin of the Hooke hinge 5. The mounting hole is set along the vertical direction A of the cable tie gun 1, and the groove formed by the ear plate of the Hooke hinge 5 connected to the pin is also set along the vertical direction A of the cable tie gun 1. This allows the second link 4 and the cutting head 11 to still swing up and down along the vertical direction A of the cable tie gun 1 under the force of the first link 3. It is understandable that when the movement direction of the first link 3 is changed by the Hooke hinge 5, the direction of the force applied to the second link 4 changes, and thus the direction of the force transmitted to the cutting head 11 changes. In order to ensure that the transmission mechanism of this embodiment can avoid the situation where space is limited and the excess part of the cable tie cannot be cut without changing the existing movement direction of the cutting head 11, a Hooke hinge 5 is added between the second link 4 and the cutting head 11 to change the change in the direction of the force back to the vertical direction A of the cable tie gun 1, so that the movement direction of the cutting head 11 remains unchanged. This allows the transmission mechanism of this embodiment to directly replace the existing transmission mechanism that moves as a whole along the vertical direction A of the cable tie gun 1.

[0071] The direction of motion of the transmission mechanism in this embodiment is as follows:

[0072] When the first link 3 swings left and right along the horizontal direction B of the cable tie gun 1, it pulls the second link 4 to swing up and down along the vertical direction A of the cable tie gun 1. That is, the second link 4 swings along the movement direction of the cutting head 11. At the same time, when the second link 4 swings, it drives the cutting head 11 to swing up and down along the vertical direction A of the cable tie gun 1, so as to effectively cut the excess part of the cable tie and not be restricted by the space along the vertical direction A of the cable tie gun 1. Compared with directly shortening the extension dimension of the existing transmission mechanism that moves along the vertical direction A of the cable tie gun 1 and keeping the transmission mechanism swinging up and down along the vertical direction A of the cable tie gun 1 to cut the cable tie, the extension dimensions of the first link 3 and the second link 4 of the transmission mechanism in this embodiment do not need to be shortened. The extension dimension of the first link 3 is not shortened even when the movement direction of the first link 3 changes. When it drives the second link 4 and the cutting head 11 to move, the lever arm that generates the force is not shortened, which is more labor-saving and not restricted by the space of up and down swing.

[0073] In this embodiment, the extension length of the first link 3 is greater than the extension length of the second link 4.

[0074] Specifically, the movement direction of the second link 4 remains unchanged, while the movement direction of the first link 3 swings left and right along the horizontal direction B of the cable tie gun 1. Since the movement direction of the first link 3 is not limited by space, there is no need to worry about interference with the hand on the handle 12, which allows the extension length of the first link 3 to be increased accordingly. At the same time, the swing range may be appropriately increased. In this embodiment, both the first link 3 and the second link 4 extend along the vertical direction A of the cable tie gun 1. When the extension length of the first link 3 is greater than the extension length of the second link 4, the lever arm size of the grip part 2 is guaranteed. When the operator swings the first link 3 left and right along the horizontal direction B of the cable tie gun 1 through the grip part 2, the force applied can be reduced accordingly, that is, it is more labor-saving. This further makes it more labor-saving when the transmission mechanism drives the cutting head 11 to move.

[0075] Furthermore, such as Figure 3 As shown, in this embodiment, the first link 3 includes a first bent section 34, which is disposed away from the gripping part 2 and located between the first end 31 and the second end 32 of the first link 3.

[0076] Specifically, the first link 3 is a "Y" shaped member, wherein the "V" shaped part includes the second end 32 and the first support arm 33, while the first bent section 34 is located on the "I" shaped part. Compared with the "I" shaped part being a straight rod, the first link 3 with the first bent section 34 can reduce the height of the first end 31 of the first link 3, thereby reducing the operating height of the gripping part 2 connected to the first end 31, making it easier to operate.

[0077] In this embodiment, the angle between the first bending segment 34 and the gripping part 2 is 45-90°. The height of the first end 31 is reduced by lowering the first bending segment 34 along the vertical direction A. Specifically, the angle between the first bending segment 34 and the horizontal plane containing the gripping part 2 is 45-90°. The reduced height of the first end 31 can be calculated using trigonometric functions in the prior art. By limiting the angle between the first bending segment 34 and the gripping part 2, convenient gripping is ensured.

[0078] Furthermore, in this embodiment, the second link 4 includes a second bent section 43, which is disposed away from the gripping part 2 and located between the first end 41 and the second end 42 of the second link 4.

[0079] Specifically, in terms of appearance, the second bending section 43 is a rod that is inclined to the horizontal plane where the first end 41 of the second link 4 is located. Compared with the second link 4 being a straight rod as a whole, the second link 4 with the second bending section 43 has a larger range of motion and a better torque transmission effect.

[0080] In this embodiment, the angle between the second bending segment 43 and the first end 41 of the second connecting rod 4 is 20-60°. This increases the height of the second end 42 of the second connecting rod 4 along the vertical direction A by using the second bending segment 43. Specifically, the angle between the second bending segment 43 and the horizontal plane containing the first end 41 of the second connecting rod 4 is 20-60°. The height difference between the first end 41 and the second end 42 of the second connecting rod 4 can be calculated using trigonometric functions in the prior art, thereby ensuring torque transmission efficiency.

[0081] In this embodiment, the transmission mechanism also includes a third link 6, the first end 61 of the third link 6 is connected to the second end 42 of the second link 4 through a Hooke hinge 5, and the second end 62 of the third link 6 is connected to the cutting head 11.

[0082] Specifically, the third link 6 is an arc-shaped member. The first end 61 of the third link 6 extends into the groove formed by the ear plate of the Hooke hinge 5 set at the second end 42 of the second link 4 along the vertical direction A of the cable tie gun 1. The second end of the third link 6 is fixedly connected to the cutting head 11. Compared with the Hooke hinge 5 set at the second end 42 of the second link 4 being directly connected to the cutting head 11, increasing the number of links can further reduce the force applied to the cutting head 11 along the horizontal direction B of the cable tie gun 1 when the second link 4 moves, that is, ensuring that the movement direction of the cutting head 11 remains unchanged based on the setting of two Hooke hinges 5.

[0083] It is understood that in this embodiment, the extension length of the second link 4 is greater than the extension length of the third link 6. This is to prevent the cutting head 11 from deviating from the preset direction when the third link 6 is driven by the second link 4, due to the excessive extension length of the third link 6.

[0084] like Figure 1 , Figure 2 and Figure 4 As shown, this embodiment also provides a cable tie cutting device, which includes the aforementioned transmission mechanism. This transmission mechanism overcomes the problem that when the grip 2 swings up and down along the vertical direction A of the cable tie gun 1, it interferes with the hand holding the handle 12, resulting in incomplete swinging and failure to cut the cable tie smoothly. Furthermore, the cable tie cutting device also includes a protective component 7 to isolate the space between the handle 12 and the cutting head 11, preventing the hand holding the handle 12 from contacting the cutting head 11 and causing injury to the operator, thus improving the safety of the cable tie cutting operation.

[0085] Furthermore, in this embodiment, the protective component 7 includes a connector 71, a guide plate 72, and a baffle 73. The connector 71 is perpendicular to the side of the cable tie gun 1 and one end of the connector 71 is connected to the side of the cable tie gun 1. One end of the guide plate 72 is connected to the cutting head 11. The guide plate 72 has a guide groove 721. The other end of the connector 71 extends into the guide groove 721 and slides within the guide groove 721. One end of the baffle 73 is connected to the side edge of the guide plate 72 near the handle 12 of the cable tie gun 1, and the other end of the baffle 73 extends between the handle 12 of the cable tie gun 1 and the cutting head 11.

[0086] Specifically, the connector 71 is a rod, and the end of the connector 71 connected to the side of the cable tie gun 1 is provided with an external thread. A corresponding threaded hole is provided on the side of the cable tie gun 1, and one end of the connector 71 is screwed to the side of the cable tie gun 1. A guide plate 72 is disposed on the side of the cutting head 11, and one end of the guide plate 72 is connected to the cutting head 11. A guide groove 721 is provided in the area of ​​the guide plate 72 away from the cutting head 11, extending along the length of the guide plate 72. The end of the connector 71 away from the cable tie gun 1 extends into the guide groove 721 and is slidably connected to the guide groove 721. It is understood that the dimension of the end of the connector 71 away from the cable tie gun 1 is larger than the dimension of the guide groove 721 to prevent the connector 71 from falling out of the guide groove 721. By providing the connector 71 and the guide plate 72, the cutting head 11 is guided during movement, preventing it from deviating from its original direction of movement.

[0087] Furthermore, the protective component 7 in this embodiment also includes a baffle 73. One end of the baffle 73 is an arc-shaped structure, and the arc-shaped structure is connected to the guide plate 72 near the edge of the handle 12 of the cable tie gun 1. The other end of the baffle 73 is a flat plate, which extends between the handle 12 and the cutting head 11 of the cable tie gun 1. The arc-shaped structure and the flat plate are integrally formed to extend from the guide plate 72 to between the handle 12 and the cutting head 11, so as to effectively isolate the space between the hand holding the handle 12 and the cutting head 11, thereby using the baffle 73 to block the hand and prevent hand injury.

[0088] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A transmission mechanism, one end of which is used to be connected with a cutting head of a cable tie gun, and the other end of which is used to be connected with a holding part, characterized in that, The transmission mechanism also includes: A first link, the first end of which is connected to the grip, the second end of which is hinged to the side of the cable tie gun, and the second end of which is also provided with a first arm, which is disposed away from the cable tie gun. The second link has a first end connected to the first support arm and a second end connected to the cutting head; The first arm and the second link are connected by the Hooke hinge, and the second link and the cutting head are connected by the Hooke hinge. The second link moves along the direction of movement of the cutting head through the Hooke hinge, and the first link moves along a direction other than the direction of movement of the cutting head through the Hooke hinge.

2. The transmission mechanism of claim 1, wherein The second link swings along the vertical direction of the cable tie gun via the Hooke hinge and is in the same direction as the movement of the cutting head, while the first link swings along the horizontal direction of the cable tie gun via the Hooke hinge.

3. The transmission mechanism of claim 1, wherein, The extension length of the first link is greater than the extension length of the second link.

4. The transmission mechanism of claim 3, wherein The first link includes a first bent section, which is disposed away from the grip portion and located between the first end and the second end of the first link.

5. The transmission mechanism of claim 4, wherein The angle between the first bent section and the gripping part is 45-90°.

6. The transmission mechanism of claim 5, wherein The second link includes a second bent section, which is disposed away from the grip portion and located between the first end and the second end of the second link.

7. The transmission mechanism of claim 6, wherein The angle between the second bent section and the first end of the second connecting rod is 20-60°.

8. The transmission mechanism of claim 7, wherein The transmission mechanism also includes a third link, the first end of which is connected to the second end of the second link via the Hooke's hinge, and the second end of the third link is connected to the cutting head; And / or the extension length of the second link is greater than the extension length of the third link.

9. A cable cutting device, characterized by The cable tie cutting device includes a transmission mechanism as described in any one of claims 1-8, and the cable tie cutting device further includes a protective component disposed between the handle of the cable tie gun and the cutting head.

10. The cable cutting apparatus of claim 9, wherein, The protective assembly includes a connector, a guide plate, and a baffle. The connector is perpendicular to the side of the cable tie gun, and one end of the connector is connected to the side of the cable tie gun. One end of the guide plate is connected to the cutting head, and the guide plate has a guide groove. The other end of the connector extends into the guide groove and slides within the guide groove. One end of the baffle is connected to the edge of the guide plate near the handle of the cable tie gun, and the other end of the baffle extends between the handle of the cable tie gun and the cutting head.

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