Tightness adjusting structure of a cable tie gun

Abstract

The application discloses a tightness adjusting structure of a cable tie gun, characterized by comprising a first sleeve and a second sleeve, wherein one end of the first sleeve is provided with an adjusting part, the second sleeve is sleeved on the adjusting part, the first sleeve is rotatable relative to the second sleeve, an adjusting pressing block is slidably arranged in the adjusting part, one end of the first sleeve away from the second sleeve is further provided with a sliding piece, a top block is further fixedly arranged on the part of the sliding piece located in the first sleeve, and a spring is arranged between the top block and the adjusting pressing block; a shearing assembly is further arranged in one end of the sliding piece located outside the first sleeve; by adopting the above method, the movement of the adjusting pressing block is realized through the sliding cooperation of the adjusting part and the adjusting pressing block, the spring is arranged between the adjusting pressing block and the top block, the movement of the adjusting pressing block compresses the spring, so that the acting force is generated on the sliding piece, the movement stroke of the sliding piece is controlled, and the shearing stroke of the shearing assembly is adjusted, and the operation is simple and convenient, and the shearing of the cable tie of different specifications is satisfied.

Description

Technical Field

[0001] This utility model relates to the field of cable tie gun technology, and in particular to a tension adjustment structure for a cable tie gun. Background Technology

[0002] A cable tie gun, also known as a cable tie tool or wire fastener, is a tool that uses mechanical principles to quickly install and tighten cable ties. After loading the cable tie into the gun, the user aims it at the item to be tied and pulls the trigger to activate the internal mechanical mechanism. This action quickly tightens and locks the cable tie onto the object, while automatically cutting off any excess cable tie. The entire process typically takes only a few seconds, greatly improving work efficiency.

[0003] Among them, the Chinese authorized utility model for cutting structure, publication number CN211196723U, discloses a cutting mechanism suitable for cable tie guns. It includes a cable tie gun body, a cylinder is installed inside the cable tie gun body, the cylinder is connected to a cylinder rod, the cylinder rod is connected to a fixed frame, a knife bar is also installed inside the cylinder, a protruding plate and a cutting blade are installed on the knife bar, the protruding plate is connected to a tension spring, the tension spring is connected to a fixed plate, the knife bar is connected to a pin and is connected to the cable tie gun body through the pin, a cutting blade is installed at one end of the knife bar, and a protruding plate is installed at the other end. The protruding plate has a cam structure, and the upper end of the protruding plate is higher than the lower end face of the fixed frame in the horizontal direction. As can be seen from its instruction manual and accompanying drawings, the cutting blade is raised by the contact between the fixed frame and the protruding plate during movement, thereby cutting the cable tie located on the cutting blade. The tension spring is used to reset the cutting blade. Although this method can cut the cable tie, it cannot adjust the cutting force. Since cable ties have different specifications, thicknesses, and hardnesses depending on different needs, the disclosed cutting mechanism will have the problem of failing to cut, thus failing to meet the usage requirements and affecting its use.

[0004] Therefore, there is an urgent need to design a tension adjustment structure for cable ties to solve one or more technical problems that are lacking in the existing technology. Utility Model Content

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a tension adjustment structure for a cable tie gun, comprising: a first housing and a second housing, one end of the first housing is provided with an adjustment part, the second housing is sleeved on the adjustment part, the first housing is rotatable relative to the second housing, an adjustment pressure block is slidably provided in the adjustment part, the adjustment pressure block is limited and slidably engaged with the adjustment part, when the first housing rotates relative to the second housing, it drives the adjustment pressure block to reciprocate within the adjustment part, a sliding member is also provided at the end of the first housing away from the second housing, one end of the sliding member passes through the first housing and through the adjustment pressure block and the second housing, the sliding member slides within the first housing and the second housing, a top block is also fixedly provided on the portion of the sliding member located within the first housing, a spring is provided between the top block and the adjustment pressure block, the spring is sleeved on the sliding member; a shearing component is also provided at the end of the sliding member located outside the first housing, the shearing component is used to perform a shearing action when the sliding member slides relative to the first housing.

[0006] In a preferred embodiment, the side wall of the adjusting part is provided with a spiral adjusting groove, and the outer side of the adjusting block is provided with an adjusting column adapted to the adjusting groove, the adjusting column being movable along the adjusting groove.

[0007] In a preferred embodiment, at least one limiting post is provided on one side of the second shell, and a limiting groove is provided on the outer side wall of the adjusting part. The limiting post cooperates with the limiting groove to restrict the separation of the second shell from the first shell.

[0008] In a preferred embodiment, the inner side of the second housing is further provided with a guide groove, and the adjusting column passes through the adjusting groove and is located in the guide groove.

[0009] In a preferred embodiment, the end of the adjustment part away from the first housing is provided with a plurality of feedback grooves, and the side of the second housing opposite to the feedback grooves is provided with at least one spring steel ball, which is located in the feedback groove.

[0010] In a preferred embodiment, a second travel limiting member is fixedly connected to the end of the first housing away from the second housing. The sliding member passes through the second travel limiting member and can slide within the second travel limiting member. Two limiting protrusions are provided on the sliding member at intervals, and the second travel limiting member is located between the two limiting protrusions.

[0011] In a preferred embodiment, the shearing assembly includes: a shearing push block, which is slidably disposed inside the bottom of one end of the sliding member located outside the first housing; one end of the shearing push block adjacent to the second stroke limiting member is limitedly connected to the second stroke limiting member; a rotating member is rotatably disposed in the end of the sliding member located outside the first housing; the rotating member is coupled with a blade; when the sliding member slides in the direction of the second housing, the shearing push block drives the rotating member to rotate, and the rotating member drives the blade to rise.

[0012] In a preferred embodiment, two spaced baffles are also fixedly provided inside the second housing. The baffles pass through the adjusting block and contact the top block. The baffles have a chamfer at the position where they contact the top block, and the top block also has a chamfer at the position where it contacts the baffles.

[0013] The beneficial effects of this utility model are as follows: This application achieves the adjustment by sliding the adjustment part and the adjustment pressure block, adjusting the movement of the pressure block, and setting a spring between the adjustment pressure block and the top block, so that the movement of the adjustment pressure block compresses the spring, thereby generating a force acting on the sliding part, thereby controlling the movement stroke of the sliding part, and thus adjusting the cutting stroke of the shearing assembly. The operation is simple and convenient, and meets the requirements of cutting cable ties of different specifications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram of the structure of the second shell of this utility model; Figure 4 This is a cross-sectional view of the present invention.

[0015] In the picture: 10. First housing; 101. Adjustment part; 102. Adjustment groove; 103. Limiting groove; 104. Feedback groove; 105. Second stroke limiting component; 11. Second housing; 111. Limiting post; 112. Guide groove; 113. Spring steel ball; 114. Baffle; 12. Shearing assembly; 121. Shearing push block; 122. Rotating component; 123. Extension part; 124. Blade; 13. Adjusting pressure block; 131. Adjusting post; 14. Sliding component; 141. Top block; 142. Limiting protrusion. Detailed Implementation

[0016] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0018] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0019] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0020] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-4 As shown, this utility model provides a tension adjustment structure for a cable tie gun, including: a first housing 10 and a second housing 11. One end of the first housing 10 is provided with an adjustment part 101. The second housing 11 is sleeved on the adjustment part 101. The first housing 10 is rotatable relative to the second housing 11. An adjustment block 13 is slidably provided inside the adjustment part 101. The adjustment block 13 is in a limiting sliding fit with the adjustment part 101. When the first housing 10 rotates relative to the second housing 11, it drives the adjustment block 13 to adjust the tension. The first sleeve 10 moves back and forth within the section 101. A sliding member 14 is provided at the end of the first sleeve 10 away from the second sleeve 11. One end of the sliding member 14 passes through the first sleeve 10 and through the adjusting pressure block 13 and the second sleeve 11. The sliding member 14 slides within the first sleeve 10 and the second sleeve 11. A top block 141 is fixedly provided on the part of the sliding member 14 located within the first sleeve 10. A spring is provided between the top block 141 and the adjusting pressure block 13. The spring is sleeved on the sliding member 14. Specifically, the second housing 11 is fixedly connected to the external cable tie gun body. One end of the first housing 10 is provided with an adjusting part 101, the diameter of which is less than or equal to the inner diameter of the second housing 11. During installation, the adjusting part 101 is inserted into the second housing 11, allowing the first housing 10 to rotate relative to it. An adjusting block 13 is slidably provided within the adjusting part 101, and this adjusting block 13 is in a limiting sliding fit with the adjusting part 101. That is, the adjusting block 13 will reciprocate in a predetermined direction as the adjusting part 101 rotates. A sliding member 14 is also slidably provided in the shell 10. One end of the sliding member 14 is located inside the first shell 10 and passes through the adjusting pressure block 13 and the second shell 11. The middle part of the sliding member 14 is hollow to accommodate the pull rod shaft, which can slide relative to the sliding member 14. The other end of the sliding member 14 is located outside the first shell 10. A clamping assembly for clamping the cable tie is slidably provided in the sliding member 14. One end of the pull rod shaft is connected to the clamping assembly to drive the clamping assembly to slide in the sliding member 14 to tighten the cable tie. The sliding member 14 also has... A shearing assembly 12 operates when the sliding member 14 slides. A top block 141 is fixedly provided within the portion of the sliding member 14 located inside the first housing 10. This top block 141 is positioned opposite to the adjusting pressure block 13. A spring is provided between the top block 141 and the adjusting pressure block 13, and this spring is sleeved on the outside of the sliding member 14 located between the top block 141 and the adjusting pressure block 13. When the first housing 10 rotates, it drives the adjusting part 101 to rotate. The adjusting part 101, through its limiting cooperation with the adjusting pressure block 13, drives the adjusting pressure block 13 to rotate within its... The inner sliding reduces the distance between the sliding block 13 and the top block 141, thereby compressing the spring and increasing the spring's restoring force. When this force acts on the sliding member 14, the force pressing against the sliding member 14 is also greater. Under these circumstances, the sliding member 14 can move for a shorter distance, and the shearing assembly 12 will end its shearing action earlier to adapt to cable ties with lower hardness or thickness. Conversely, the distance between the adjusting pressure block 13 and the top block 141 is increased, and the sliding member 14 moves for a longer distance, extending the action of the shearing assembly 12 to cut cable ties with higher thickness and hardness.

[0022] Furthermore, in this embodiment, the side wall of the adjusting part 101 is provided with an adjusting groove 102 in a spiral shape, and adjusting columns 131 are respectively provided on the two opposite outer sides of the adjusting pressure block 13. The adjusting columns 131 are located in the adjusting groove 102. When the adjusting part 101 rotates, the adjusting pressure block 13 is driven to move forward or backward through the sliding cooperation between the adjusting groove 102 and the adjusting column 131.

[0023] Furthermore, to prevent the adjusting block 13 from rotating within the adjusting section 101, guide grooves 112 are respectively provided on opposite sides of the second housing 11. The adjusting column 131 passes through the adjusting groove 102 and is located within the guide groove 112. The guide groove 112 is arranged along the axial direction of the second housing 11, so that the adjusting block 13 can only move forward or backward and will not be driven to rotate.

[0024] Furthermore, in this embodiment, to prevent the first housing 10 and the second housing 11 from detaching and affecting use, and to avoid restricting the rotation of the first housing 10 relative to the second housing 11, at least one limiting post 111 is provided on the side of the second housing 11 adjacent to the first housing 10. The limiting post 111 can be vertically inserted into the second housing 11 or horizontally inserted into the second housing 11 along the radial direction. In this embodiment, it is preferred to insert it horizontally along the radial direction of the second housing 11. The middle part of the limiting post 111 is exposed outside the inner wall of the second housing 11. At the same time, a limiting groove 103 is provided at the position corresponding to the adjusting part 101 and the limiting post 111. When the adjusting part 101 is inserted into the second housing 11, the limiting post 111 is inserted. The middle part of the limiting post 111 is located in the limiting groove 103. The cooperation between the limiting post 111 and the limiting groove 103 restricts the first housing 10 from disengaging from the second housing 11, and does not affect the rotation of the first housing 10 relative to the second housing 11.

[0025] It should be noted that, in order to improve the stability of the fit, there are two limit posts 111, which are located on opposite sides of the second housing 11.

[0026] Furthermore, to facilitate the user's understanding of the movement progress of the adjusting block 13 when rotating the first housing 10, a number of spaced feedback grooves 104 are provided at the end of the adjusting part 101 inserted into the second housing 11. At the same time, at least one spring steel ball 113 is provided on the side of the second housing 11 opposite to the feedback groove 104. During assembly, the spring steel ball 113 will press against the feedback groove 104 and move in the adjacent feedback groove 104 as the adjusting part 101 rotates. When the spring steel ball 113 moves in the adjacent feedback groove 104, it will hit the corresponding feedback groove 104 and make a sound, reminding the user that the adjusting block 13 is moving. The number of sounds can be used to roughly judge the current position of the adjusting block 13. The spring steel ball 113 can also prevent the adjusting block 13 from pushing the first housing 10 to rotate under the force of the spring to a certain extent. In order to ensure stability, in this embodiment, two spring steel balls 113 are provided. The resistance generated by the cooperation of the two spring steel balls 113 and the feedback groove 104 restricts the free rotation of the first housing 10.

[0027] Furthermore, a second travel limiter 105 is fixedly connected to the end of the first housing 10 away from the second housing 11. The sliding member 14 passes through the second travel limiter 105 and can slide within the second travel limiter 105. Two limiting protrusions 142 are spaced apart on the sliding member 14. The second travel limiter 105 is located between the two limiting protrusions 142. Specifically, the pull rod shaft will first drive the clamping assembly to move in the sliding member 14 for a first stroke. At the extreme position, the clamping assembly will press against the sliding member 14 and drive the sliding member 14 to move in a second stroke. The movement in the second stroke will cause the shearing assembly 12 to perform a shearing action. In order to avoid excessive movement of the sliding member 14 in the second stroke, a second stroke limiter 105 is fixedly provided in the end of the first housing 10 away from the second housing 11. At the same time, two spaced limit protrusions 142 are provided on the sliding member 14. The second stroke limiter 105 is located between the two limit protrusions 142. Whether the sliding member 14 moves forward or backward, it will be limited and restricted to continue moving after a certain stroke.

[0028] Furthermore, the shearing assembly 12 includes a shearing pusher 121 slidably disposed within the bottom of the slider 14. One end of the shearing pusher 121 is limitedly connected to the second stroke limiting member 105, meaning the shearing pusher 121 does not slide actively; rather, the slider 14 causes a relative position change in the shearing pusher 121 when it slides. A rotating member 122 is also rotatably disposed at the end of the slider 14 located outside the first housing 10. The rotating member 122 has two extensions 123, which are spaced apart at a predetermined angle. One extension 123 is movably connected to a blade 124. An clearance hole is provided on the upper part, with one extension 123 located inside the clearance hole and the other extension 123 corresponding to the shearing push block 121. When the slider 14 performs the second stroke, a change in the relative position between the shearing push block 121 and the slider 14 occurs. The slider 14 moves backward, causing the rotating member 122 to move backward. During this movement, the shearing push block 121 remains stationary, causing the extension 123 corresponding to the shearing push block 121 to be pushed and rotated under the obstruction of the shearing push block 121. The rotation of the rotating member 122 causes the other extension 123 to move, causing it to drive the blade 124 to rise and form a shearing action.

[0029] It should be noted that a torsion spring can be provided on the rotating component 122 to allow it to reset itself. When the sliding component 14 resets, the rotating component 122 loses the force resisting the shearing push block 121 and resets itself under the force of the torsion spring, thus resetting the blade 124. If the cable tie to be cut is thin and not very hard, the adjusting pressure block 13 inside can be moved by rotating the first housing 10 to shorten the distance between it and the top block 141, compressing the spring. Under the force of the spring, the moving distance of the sliding component 14 is shortened, and the angle at which the shearing push block 121 can push the rotating component 122 to rotate is smaller, resulting in a smaller height that the blade 124 rises. Conversely, the opposite is also true.

[0030] Furthermore, two spaced baffles 114 are fixedly installed inside the second housing 11. The baffles 114 pass through the adjusting pressure block 13 and contact the top block 141. The baffles 114 and the top block 141 are chamfered at the contact points. The top block 141 and the baffles 114 are also chamfered at the contact points. Specifically, to prevent the spring from shifting when compressed or released, two baffles 114 are fixedly installed inside the second housing 11. The two baffles 114 are located on the left and right sides of the spring after it is installed, which can limit the spring's shift. The end of the baffle 114 facing the top block 141 contacts the top block 141. Since the slider 14 will move backward during the second stroke, in order to prevent the top block 141 from being blocked by the baffle 114 and thus preventing the slider 14 from being unable to move backward, a chamfer is provided at the opposite end of the baffle 114 and the top block 141. At the same time, a matching chamfer is also provided on the top block 141, so that when the top block 141 moves backward under the drive of the slider 14, it squeezes the baffle 114 from the middle, causing the baffle 114 to expand outward in a "V" shape. When the slider 14 returns to its original position, the baffle 114 also returns to its original shape.

[0031] In summary, this application achieves the adjustment by sliding the adjustment part 101 and the adjustment block 13, adjusting the movement of the adjustment block 13, and setting a spring between the adjustment block 13 and the top block 141, so that the movement of the adjustment block 13 compresses the spring, thereby generating a force that acts on the sliding member 14, thereby controlling the movement stroke of the sliding member 14, and thus adjusting the cutting stroke of the shearing assembly 12. The operation is simple and convenient, and meets the requirements of cutting cable ties of different specifications.

[0032] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A tension adjustment structure for a cable tie gun, characterized in that, include: A first shell and a second shell are provided. One end of the first shell is provided with an adjustment part, and the second shell is fitted onto the adjustment part. The first shell is rotatable relative to the second shell. An adjustment block is slidably provided inside the adjustment part. The adjustment block is in a limiting sliding fit with the adjustment part. When the first shell rotates relative to the second shell, it drives the adjustment block to reciprocate within the adjustment part. A sliding member is also provided at the end of the first shell away from the second shell. One end of the sliding member passes through the first shell and through the adjustment block and the second shell. The sliding member slides within the first shell and the second shell. A top block is also fixed on the portion of the sliding member located inside the first shell. A spring is provided between the top block and the adjustment block, and the spring is fitted onto the sliding member. A shearing component is also provided at the end of the sliding member located outside the first shell. The shearing component is used to perform a shearing action when the sliding member slides relative to the first shell.

2. The tension adjustment structure of the cable tie gun according to claim 1, characterized in that, The side wall of the adjustment part is provided with a spiral adjustment groove, and the outer side of the adjustment pressure block is provided with an adjustment column adapted to the adjustment groove. The adjustment column can move along the adjustment groove.

3. The tension adjustment structure of the cable tie gun according to claim 1, characterized in that, The second housing has at least one limiting post on one side, and the outer wall of the adjusting part has a limiting groove. The limiting post cooperates with the limiting groove to restrict the separation of the second housing from the first housing.

4. The tension adjustment structure of the cable tie gun according to claim 2, characterized in that, The inner side of the second housing is also provided with a guide groove, and the adjusting column passes through the adjusting groove and is located in the guide groove.

5. The tension adjustment structure of the cable tie gun according to claim 1, characterized in that, The adjustment part has several feedback grooves at one end away from the first housing. The second housing has at least one spring steel ball on the side opposite to the feedback groove, and the spring steel ball is located in the feedback groove.

6. The tension adjustment structure of the cable tie gun according to claim 1, characterized in that, A second travel limiter is fixedly connected to the end of the first housing away from the second housing. The sliding member passes through the second travel limiter and can slide within the second travel limiter. Two limiting protrusions are spaced apart on the sliding member, and the second travel limiter is located between the two limiting protrusions.

7. The tension adjustment structure of the cable tie gun according to claim 6, characterized in that, The shearing assembly includes: a shearing push block, which is slidably disposed inside the bottom of one end of the sliding member located outside the first housing; one end of the shearing push block adjacent to the second stroke limiting member is limitedly connected to the second stroke limiting member; a rotating member is rotatably disposed in the end of the sliding member located outside the first housing; the rotating member is connected to a blade; when the sliding member slides in the direction of the second housing, the shearing push block drives the rotating member to rotate, and the rotating member drives the blade to rise.

8. The tension adjustment structure of the cable tie gun according to claim 1, characterized in that, The second housing is also fixedly provided with two spaced baffles. The baffles pass through the adjusting pressure block and contact the top block. The baffles have a chamfer at the position where they contact the top block, and the top block also has a chamfer at the position where it contacts the baffles.

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