Electric crimping pliers head and electric crimping pliers

Abstract

The utility model provides an electric crimping plier head and an electric crimping plier comprising the electric crimping plier head. The movable crimping plier head comprises a connecting shaft, a left plier head and a right plier head, wherein the left plier head and the right plier head are in pivot connection through the connecting shaft; wherein the right clamp head is provided with a right crimping end; wherein the left plier head is provided with a left crimping end and a gear end which are oppositely arranged, and the gear end moves to drive the left crimping end to rotate around the connecting shaft, so that the change of the relative distance or the relative acting force of the left crimping end and the right crimping end is realized.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and more specifically to an electric crimping pliers head and an electric crimping pliers. Background Technology

[0002] Compared to manual tools, power tools have significant advantages in efficiency, precision, and ergonomics, and have become the mainstream choice, especially in modern horticulture, construction, and manufacturing.

[0003] Electric garden shears, with their core advantages of high efficiency, labor-saving, precision, and environmental friendliness, are gradually replacing traditional manual tools, especially suitable for medium- to high-intensity pruning needs. With the development of battery technology and intelligent features, their application scenarios will further expand, making them an essential tool in modern gardening. For example, Chinese patent CN214257259U provides an electric shearing mechanism that uses a motor to drive a pushing mechanism. The pushing mechanism includes a hinge block, with two blades hinged to each other on both sides via connecting plates. The pushing mechanism can simultaneously drive both blades to move together, thereby achieving the cutting function.

[0004] Crimping pliers are specialized tools used for tightening water pipes, oil pipes, and cable clamps. Unlike cutting tools, crimping pliers rely on the relative squeezing force between the jaws, not shearing force. Therefore, their structural layout differs significantly from that of cutting tools. Furthermore, crimping operations require extremely high precision in jaw closure: insufficient crimping can lead to seal failure and leakage, while excessive crimping can cause pipe deformation or structural damage to the clamps. The actuation mechanism in patent CN214257259U does not yet meet the precision control requirements of electric crimping pliers. Therefore, there is currently a lack of commercially reliable electric crimping pliers solutions on the market. Utility Model Content

[0005] In order to overcome at least one deficiency of the prior art, this utility model provides an electric crimping pliers head and an electric crimping pliers.

[0006] To achieve the above objectives, this utility model provides an electric crimping pliers head, including a connecting shaft and a left pliers head and a right pliers head pivotally connected by the connecting shaft; wherein, the right pliers head has a right crimping end; wherein, the left pliers head has a left crimping end and a gear end arranged opposite to each other, the movement of the gear end driving the left crimping end to rotate around the connecting shaft, thereby realizing the change of the relative distance or relative force between the left crimping end and the right crimping end.

[0007] As the gear end gradually moves, the distance between the left and right crimping ends gradually decreases; or, in a more extreme case, the distance between the left and right crimping ends is 0, but as the gear end gradually moves, the relative force between the left and right crimping ends changes, for example, it gradually increases. Alternatively, as the gear end gradually moves, the distance between the left and right crimping ends first gradually decreases, and after the distance reaches 0, the relative force between the left and right crimping ends changes. Still another possibility is that as the gear end gradually moves, the distance between the left and right crimping ends gradually decreases, and the distance remains greater than 0 at all times.

[0008] Optionally, the left jaw is the moving jaw, and the right jaw is the stationary jaw. However, although the terms "left" and "right" are used to describe the orientation in this utility model, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on the utility model.

[0009] Unlike shearing tools, crimping pliers rely not on shearing force, but on the opposing squeezing force of the jaws. Therefore, to increase the squeezing force of the left and right jaws, they are positioned opposite each other, i.e., on the same plane. In one optional embodiment, both jaws have projections on any cross-section parallel to the axial section of the connecting shaft. In another optional embodiment, there are only a few cross-sections parallel to the axial section of the connecting shaft, on which both jaws have projections. In other words, both the left and right crimping ends have cross-sections on the same plane, parallel to the axial section of the connecting shaft; the number of such cross-sections can be one or any number.

[0010] Furthermore, in cross-section, the left and right crimping ends are symmetrically arranged to better provide the crimping force, but the remaining parts of the left and right pliers can be completely asymmetrical.

[0011] Optionally, the left crimping end and the right crimping end are arranged opposite to each other. The left crimping end and the right crimping end are respectively provided with opposite left action parts and right action parts. The movement of the gear end drives the left crimping end to rotate around the connecting shaft, thereby realizing the change of the relative distance or relative force between the left action parts and the right action parts. The left action parts and the right action parts are respectively provided with opposite left clearance grooves and right clearance grooves on their inner sides.

[0012] Optionally, the left and right crimping ends are also provided with a left abutting end and a right abutting end that cooperate with each other. When crimped in place, the left abutting end abuts against the right abutting end. At this time, there may be a gap between the left and right action parts, or the gap may be 0. Alternatively, in another embodiment, the left and right abutting ends may not be provided. When the left action part abuts against the right action part, it is directly crimped in place.

[0013] Optionally, the right and left jaws each include a right rotating plate and a left rotating plate. The right rotating plate protrudes towards the left rotating plate to form a right crimping end, and the left rotating plate protrudes towards the right rotating plate to form a left crimping end. The right and left rotating plates can protrude to the same degree, meaning the thickness of the left and right crimping ends can be consistent, which helps to apply crimping force to the object being crimped. The left crimping end has a sliding surface at its junction with the left rotating plate for engaging with the right rotating plate.

[0014] Optionally, the connecting shaft passes through the right rotating plate and the left rotating plate in sequence, and the connecting shaft can be part of the screw.

[0015] Optionally, several gears are provided circumferentially outward at the gear end, and all of these gears are located on a circular arc surface. Optionally, the center of the corresponding circle of the circular arc surface coincides with the center of the rotation axis.

[0016] Optionally, to facilitate the installation of other components, a clearance groove is provided between the gear end and the left connecting piece.

[0017] Optionally, for ease of crimping, the right crimping end is offset at the geometric symmetry center axis of the right clamp head.

[0018] Optionally, the components of the left jaw can be integrally molded. Optionally, the left crimping end, gear end, and left rotating plate of the left jaw can also be detachably connected, such as by bonding or welding.

[0019] This utility model also provides an electric crimping pliers, including any of the electric crimping pliers heads described above; the electric crimping pliers also include a motor, a triggering mechanism and a transmission device, the transmission device including a first gear, the first gear meshing with a gear end, and by triggering the triggering mechanism, the motor operates to drive the first gear of the transmission device to rotate, thereby driving the movement of the gear end.

[0020] In summary, the electric crimping pliers provided by this utility model drive the left crimping end to rotate around the connecting shaft through the movement of the gear end, thereby realizing the change of the relative distance or relative force between the left and right crimping ends. Instead of directly driving the displacement of the left and right pliers by pushing the precision mechanism, it is easier to control. Attached Figure Description

[0021] Figure 1This is a first schematic diagram of the electric crimping pliers head provided in an embodiment of this utility model;

[0022] Figure 2 This is a second schematic diagram of the electric crimping pliers head provided in an embodiment of this utility model;

[0023] Figure 3 This is a first exploded view of the left and right pliers provided in an embodiment of this utility model;

[0024] Figure 4 This is a second exploded view of the left and right pliers provided in an embodiment of this utility model;

[0025] Figure 5 This is a side view of the left clamp head provided in an embodiment of this utility model;

[0026] Figure 6 This is a side view of the right clamp head provided in an embodiment of this utility model;

[0027] Figure 7 This is a first schematic diagram of the electric crimping pliers after the outer shell has been removed, according to an embodiment of this utility model;

[0028] Figure 8 This is a second schematic diagram of the electric crimping pliers after the outer shell has been removed, as provided in an embodiment of this utility model;

[0029] Figure 9 This is a schematic diagram of the electric crimping pliers provided in an embodiment of this utility model. Detailed Implementation

[0030] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings.

[0031] Please refer to Figures 1 to 6 This embodiment provides an electric crimping pliers head 100, including a connecting shaft 4 and a left pliers head 3 and a right pliers head 2 pivotally connected by the connecting shaft; wherein, the right pliers head has a right crimping end 21; wherein, the left pliers head has a left crimping end 31 and a gear end 32 disposed opposite to each other, the movement of the gear end drives the left crimping end to rotate around the connecting shaft, thereby realizing the change of the relative distance or relative force between the left crimping end and the right crimping end.

[0032] The movement of the gear end drives the left crimping end to rotate around the connecting shaft, thereby changing the relative distance or relative force between the left and right crimping ends. This is not achieved by directly driving the displacement of the left and right clamps through the push mechanism, making it easier to control.

[0033] In this embodiment, the electric crimping pliers head has at least two states: an open state and a clamped state. In each of these two states, the relative distance or relative force between the left and right crimping ends differs. The relative distance is smaller or the relative force is larger in the clamped state. In other embodiments, the electric crimping pliers head also has a third state, such as an intermediate state, where the relative distance or relative force between the left and right crimping ends is at an intermediate value.

[0034] In this embodiment, the left jaw is a movable jaw, and the right jaw is a fixed jaw. The left jaw moves relative to the right jaw.

[0035] The left and right crimping ends are arranged opposite to each other. The left crimping end includes a left actuating part 311 and a left abutting end 313, with a left clearance groove 312 between the left actuating part 311 and the left abutting end 313. Correspondingly, the right crimping end includes a right actuating part 211 and a right abutting end 213, with a right clearance groove 212 between the right actuating part 211 and the right abutting end 213. Due to the presence of the left clearance groove 312 and the right clearance groove 212, both the left actuating part 311 and the right abutting part 211 are hook-shaped. The left clearance groove 312 and the right clearance groove 212 are opposite to each other and combine together to form a receiving groove. The left abutting end 313 and the right abutting end 213 cooperate with each other. When crimped in place, the left abutting end abuts against the right abutting end, achieving a limiting function. After crimping in place, the distance between the left actuating part 311 and the right abutting part 211 is greater than 0. In other embodiments, it can also be equal to 0.

[0036] In this embodiment, to increase the clamping force of the left and right clamping heads, the left and right clamping heads are arranged opposite each other, i.e., located on the same plane. The left and right clamping heads have projections on any cross-section parallel to the axial section of the connecting shaft. Furthermore, the left and right crimping ends are symmetrically arranged on the cross-section to better provide the crimping force, but the remaining parts of the left and right clamping heads can be completely asymmetrical.

[0037] In this embodiment, the right and left clamping heads each include a right rotating plate 22 and a left rotating plate 33, respectively. The right rotating plate protrudes towards the left rotating plate to form a right crimping end, and the left rotating plate protrudes towards the right rotating plate to form a left crimping end. The right and left rotating plates can protrude to the same degree, meaning the thickness of the left and right crimping ends can be consistent, which helps the crimping force to act on the object being crimped. The right rotating plate 22 and the left rotating plate 33 are in planar contact, therefore this position will not interfere with rotation.

[0038] Both the right rotating plate 22 and the left rotating plate 33 can be annular in shape, and each has a connecting hole at the center of the shaft for the rotating shaft to pass through. At the junction of the left pressing end 31 and the left rotating plate, or at the position where the left pressing end 31 mates with the right rotating plate, there is a sliding surface. The sliding surface is shaped as an arc surface 35, which mates with the right rotating plate and is used for guiding and limiting.

[0039] The connecting shaft passes sequentially through the right and left rotating plates; the connecting shaft can be part of a screw. The left jaw has threads on the inner wall of the connecting hole 331 that mates with the connecting shaft, and this section of the connecting shaft also has mating threads. The right jaw has a smooth inner wall on the connecting hole 221 that mates with the connecting shaft. The movement of the gear end drives the left pressing end to rotate around the connecting shaft, thereby changing the relative distance or relative force between the left and right acting parts.

[0040] Optionally, the right rotating plate also has a connecting end 23 for mates with other accessories, and the connecting end is also provided with a protrusion 24. In order to facilitate the installation of other components, a clearance groove 34 is provided between the gear end and the left connecting plate, and the clearance groove 34 is not affected by the connecting end 23.

[0041] Optional, such as Figure 5 As shown, several gears are arranged circumferentially outward at the gear end, and all of these gears are located on a circular arc surface. In this embodiment, the center of the circular arc surface coincides with the center of the rotation axis. Figure 5 The central axes S1 and S2 of any two gears in the diagram coincide with the center of the rotation axis.

[0042] Optional, such as Figure 6 As shown, for ease of crimping, the right crimping end is offset from the geometrically symmetrical center axis of the right clamp head. Figure 6 The geometric symmetry center axis S3 of the right jaw and the jaw symmetry line S4 of the right crimping end do not coincide.

[0043] In this embodiment, all components of the entire left jaw can be integrally formed, and all components of the entire right jaw can also be integrally formed.

[0044] Please refer to Figures 7 to 9 The present invention also provides an electric crimping pliers 900, including any of the electric crimping pliers head 100 as described above; the electric crimping pliers also include a motor 7, a triggering mechanism 5 and a transmission device 6, the transmission device including a first gear 61, the first gear and the gear end meshing, by triggering the triggering mechanism, the motor operates to drive the first gear of the transmission device to rotate, thereby driving the movement of the gear end.

[0045] The transmission device may also include a second gear 62 and a third gear 63, with the first gear 61, the second gear 62 and the third gear 63 meshing with each other in sequence, and the third gear being driven by a motor.

[0046] The electric crimping pliers may also include a control system and a battery 9. The control system includes a first circuit board 81 and a second circuit board 82. The battery provides power to the motor. The second circuit board 82 is located in a clearance groove between the gear end and the left connecting piece. The second circuit board 82 is electrically connected to a triggering mechanism. By triggering the triggering mechanism, the control system controls the motor to rotate, thereby driving the first gear of the transmission device to rotate, which in turn drives the movement of the gear end.

[0047] Electric crimping pliers may also include a spring-back mechanism. After the triggering mechanism is released, the components are reset by the spring-back mechanism.

[0048] Those skilled in the art should understand that in the disclosure of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on the utility model.

[0049] Although the present invention has been disclosed above by way of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection claimed in the claims.

Claims

1. An electric crimping tool head, characterized in that, The utility model relates to a kind of electric crimping tongs, including: Connecting shaft, Left jaw and right jaw are pivoted by the connecting shaft; Wherein, the right jaw has right crimping end; Wherein, the left jaw has oppositely arranged left crimping end and gear end, the movement of the gear end drives the left crimping end to rotate around the connecting shaft, so as to realize the change of relative distance or relative force of the left crimping end and the right crimping end.

2. The jaw of an electric crimping wrench according to claim 1, characterized in that The left crimping end and the right crimping end both have cross section in the same plane, and the cross section is parallel to the axial section of the connecting shaft.

3. The jaw of an electric crimping wrench according to claim 2, characterized in that In the cross section, the left crimping end and the right crimping end are symmetrically arranged.

4. The jaw of an electric crimping wrench according to claim 1, characterized in that, The left crimping end and the right crimping end are oppositely arranged, and the left crimping end and the right crimping end are respectively provided with opposite left acting part and right acting part, the movement of the gear end drives the left crimping end to rotate around the connecting shaft, so as to realize the change of relative distance or relative force of the left acting part and the right acting part, and left avoiding groove and right avoiding groove are respectively arranged on the inner side of the left acting part and the right acting part.

5. The jaw of an electric crimping wrench according to claim 4, characterized in that The left crimping end and the right crimping end are respectively provided with left abutting end and right abutting end matched with each other, and the left abutting end abuts against the right abutting end or the left acting part abuts against the right acting part after crimping.

6. The jaw of an electric crimping wrench according to claim 4, characterized in that The right crimping end is arranged on the geometric center axis of the right jaw.

7. The jaw of an electric crimping wrench according to claim 1 or 2 or 3 or 4, characterized in that, The right jaw and the left jaw respectively include right rotating piece and left rotating piece, the right rotating piece protrudes to form the right crimping end towards the left rotating piece, the left rotating piece protrudes to form the left crimping end towards the right rotating piece, the right rotating piece and the left rotating piece are in plane contact, and the left crimping end is provided with sliding surface matched with the right rotating piece at the junction with the left rotating piece.

8. The jaw of an electric crimping wrench according to claim 1 or 2 or 3 or 4, characterized in that, The gear end is provided with a plurality of gears outward in circumference, and the plurality of gears are located on circular arc surface.

9. The jaw of an electric crimping wrench according to claim 1, characterized in that The left jaw is integrally formed.

10. An electric crimping tool, characterized by The utility model relates to a kind of electric crimping tongs, including according to any one of claims 1 to 9 electric crimping tongs jaw;The electric crimping tongs further include motor, trigger mechanism and transmission device, the transmission device includes first gear, the first gear and the gear end are engaged, by triggering the trigger mechanism, the motor operates and drives the first gear of the transmission device to rotate, so as to drive the movement of the gear end.

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