A push-type double-pull switch

Abstract

The utility model discloses a push-type double-pull-wire switch, which relates to the technical field of pull-wire switch equipment, including a shell, a button, two rotating arms and two pull-wire arms, the two rotating arms are arranged side by side in the shell and a rotating shaft runs through the middle of the two rotating arms, the two rotating arms can be rotatably connected to the shell through the rotating shaft, the two ends of each rotating arm are respectively a pressure-bearing end and a driving end, and the two driving ends are located on both sides of the rotating shaft; the two pull-wire arms are arranged side by side on both sides of the rotating shaft and can be movably arranged in the shell, one end of the two pull-wire arms is respectively connected to the two driving ends, and the other ends of the two pull-wire arms are respectively connected to two pull-wire assemblies; the button is rotatably connected to the shell, one side of the button extends out of the two ends of the shell as a pressing end, and the other side of the button is located in the shell and can respectively abut against the two pressure-bearing ends at both ends; press one pressing end of the button so that a pressure-bearing end is pressed to rotate around the rotating shaft and drive the pull-wire arm to move to pull the corresponding pull-wire assembly; this facilitates button operation and improves user experience.

Description

Technical Field

[0001] The utility model relates to the technical field of pull-wire switch equipment, in particular to a push-type double-pull-wire switch. Background Art

[0002] In order to unlock the front trunk lock, fuel tank lock or seat of a motorcycle or electric vehicle, it is necessary to unlock the front trunk lock or fuel tank lock through an unlocking pull wire, or to pull the seat through the unlocking pull wire to unlock it. Therefore, an external pull wire switch is provided on the motorcycle or electric vehicle, on which an unlocking pull wire connected to the external part to be unlocked is provided. After pulling the unlocking pull wire, the part to be unlocked can be unlocked.

[0003] Existing push-type double pull-wire switch (such as Figure 1 As shown in the figure, by pressing the two ends of the button 20 respectively, the transmission member 2 is rotated clockwise or counterclockwise, and then the lever principle is used to enable the two ends of the transmission member to drive the two rotating arms 3 to rotate clockwise or counterclockwise respectively. When one rotating arm 3 rotates, the pull wire assembly at one end is pulled to realize the front box lock or fuel tank lock or seat cushion switch action; however, this type of double pull wire switch has a rotation fulcrum of the rotating arm 3 located at one end of the rotating arm 3, and the pull wire assembly is connected to the other end of the rotating arm 3, resulting in the driving torque of the transmission member 2 on the rotating arm 3 being smaller than the resistance torque of the pull wire assembly on the rotating arm 3, resulting in the difficulty in driving the rotating arm 3 to rotate by pressing the button 20, which affects the user experience. Utility Model Content

[0004] The purpose of the utility model is to provide a push-type double-pull-cord switch to solve the problems existing in the above-mentioned prior art, facilitate button operation, and improve the user experience.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a push-type double-pull wire switch, comprising a shell, a button, two rotating arms and two pull wire arms, the two rotating arms are arranged side by side in the shell and a rotating shaft passes through the middle of the two rotating arms, the two rotating arms can be rotatably connected to the shell through the rotating shaft, the two ends of each rotating arm are respectively a pressure-bearing end and a driving end, and the two driving ends are located on both sides of the rotating shaft; the two pull wire arms are arranged side by side on both sides of the rotating shaft and can be movably arranged in the shell, one end of the two pull wire arms is respectively connected to the two driving ends, and the other ends of the two pull wire arms are respectively connected to two pull wire assemblies; the button is rotatably connected to the shell, one side of the button extends out of the shell and both ends are pressing ends, the other side of the button is located in the shell and both ends can respectively abut against the two pressure-bearing ends; press one of the pressing ends of the button so that one of the pressure-bearing ends is pressed to rotate around the rotating shaft and drive the pull wire arm to move to pull the corresponding pull wire assembly.

[0007] Preferably, the button is rotatably connected to the shell via a rotating member, the rotating member is rotatably connected to the inner wall of the shell, the button passes through the side wall of the shell and is fixedly connected to the rotating member; and the rotating member is connected to a first reset component, the button can drive the rotating member to rotate relative to the shell and cause the first reset component to elastically deform, and the button and the rotating member can return to their original position under the restoring force of the first reset component.

[0008] Preferably, the first reset component includes a steel ball and a spring, the steel ball is fixedly arranged at one end of the spring, and the other end of the spring is fixedly connected to the inner wall of the shell; a groove is arranged on one side wall of the rotating member close to the spring, and the steel ball is embedded in the groove; the button can drive the rotating member to rotate relative to the shell and squeeze the spring along the rotation direction to make the spring elastically deform.

[0009] Preferably, a stop groove is provided on a side wall of the rotating member facing away from the spring, and a through groove is provided at a position of the shell opposite to the stop groove, and a stop member passing through the through groove can be embedded in the stop groove to maintain the relative position of the rotating member and the shell.

[0010] Preferably, the two wire pulling arms are slidably disposed in the housing along a straight line, and the sliding directions of the two wire pulling arms are parallel.

[0011] Preferably, two parallel sliding grooves are provided on the inner wall of the shell, and the two wire pulling arms can be slidably connected to the two sliding grooves respectively.

[0012] Preferably, a connecting plate is provided on one side of the two wire pulling arms facing away from the wire pulling assembly, and the driving end is provided with an arc surface, and the driving end is slidably abutted against one side of the connecting plate.

[0013] Preferably, two placement grooves are further provided on the inner wall of the shell, and the second reset components can be placed in the placement grooves. The two pull-wire arms are respectively connected to the two second reset components, and the second reset components can be elastically deformed during the movement of the pull-wire arms.

[0014] Preferably, two limit blocks are fixedly provided on the inner wall of the shell, the two limit blocks are located on the side of the two rotating arms away from the button, and can abut against the position of the corresponding rotating arm close to the driving end.

[0015] Preferably, a fixing plate is fixedly provided on a side of the shell away from the button, the wire pulling body of the wire pulling assembly is fixedly connected to the fixing plate, and the wire pulling head of the wire pulling assembly is fixedly connected to the corresponding wire pulling arm.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The push-type double-pull-wire switch provided by the utility model can rotate the button relative to the shell in a clockwise or counterclockwise direction by pressing the two pressing ends on the outside of the button. Since the pressure ends of the two rotating arms are located on both sides of the rotating shaft, when the button rotates in different directions, the pressure ends of the corresponding rotating arms can be pressed respectively by utilizing the lever principle, so that the corresponding rotating arms can be synchronously rotated along the rotation direction of the button, and the corresponding pull-wire arms can be driven to move by the driving ends of the corresponding rotating arms to pull the pull-wire assembly to realize the switching action; in addition, since the rotating shafts of the two rotating arms are located in the middle position of themselves, the rotating shafts serve as rotation fulcrums, and the driving torque given to the rotating arm by the button is close to the resistance torque given to the rotating arm by the pull-wire arm and the pull-wire assembly, which is equivalent to a seesaw, which saves effort and facilitates button operation, and can improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the internal structure of an existing push-type double-pull-wire switch;

[0020] Figure 2 This is a schematic axial view of the push-type double-pull-wire switch provided in Example 1;

[0021] Figure 3 A schematic diagram of an axial side of a push-type double-pull-wire switch (without the housing) provided in Example 1;

[0022] Figure 4 Another axial schematic diagram of the push-type double-pull-wire switch (without the housing) provided in Example 1;

[0023] Figure 5 A schematic diagram of the structure of one side wall of the housing provided in Example 1;

[0024] Figure 6 A schematic diagram of the structure of another side wall of the housing provided in Embodiment 1;

[0025] Figure 7 This is a schematic structural diagram of the rotating member provided in Example 1.

[0026] In the figure: 1-push type double pull-wire switch; 10-housing; 11-through groove; 12-slide groove; 13-placing groove; 14-limiting block; 15-fixing plate; 16-mounting hole; 20-button; 21-pressing end; 30-rotating arm; 31-pressure end; 32-driving end; 40-pull wire arm; 41-connecting plate; 42-sliding protrusion; 50-rotating shaft; 60-pull wire assembly; 61-pull wire body; 62-pull wire head; 70-rotating member; 71-groove; 72-stop groove; 80-first reset component; 81-steel ball; 82-spring; 90-stop member; 2-transmission member; 3-rotating arm. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The purpose of the utility model is to provide a push-type double-pull wire switch, so as to solve the problems existing in the above-mentioned prior art, facilitate button operation and improve the user experience.

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Embodiment 1

[0031] This embodiment provides a push-type double-pull wire switch 1, see Figure 2-Figure 7 , including a housing 10, a button 20, two rotating arms 30 and two wire pulling arms 40, the two rotating arms 30 are arranged side by side in the housing 10 and a rotating shaft 50 runs through the middle of the two rotating arms 30, the two rotating arms 30 can be rotatably connected to the housing 10 through the rotating shaft 50, the two ends of each rotating arm 30 are respectively a pressure-bearing end 31 and a driving end 32, and the two driving ends 32 are located on both sides of the rotating shaft 50; the two wire pulling arms 40 are arranged side by side on both sides of the rotating shaft 50 and can be movably arranged in the housing 10, the two One end of each wire-pulling arm 40 is respectively connected to the two driving ends 32, and the other ends of the two wire-pulling arms 40 are respectively connected to two wire-pulling assemblies 60; the button 20 is rotatably connected to the shell 10, one side of the button 20 extends out of the shell 10 and both ends are pressing ends 21, and the other side of the button 20 is located in the shell 10 and both ends can respectively abut against the two pressure-receiving ends 31; press a pressing end 21 of the button 20 so that a pressure-receiving end 31 is pressed to rotate around the rotating shaft 50 and drive the wire-pulling arm 40 to move to pull the corresponding wire-pulling assembly 60.

[0032] By pressing the two pressing ends 21 on the outside of the button 20, the button 20 is rotated relative to the housing 10 in a clockwise or counterclockwise direction. Since the pressure ends 31 of the two rotating arms 30 are located on both sides of the rotating shaft 50, when the button 20 rotates in different directions, the pressure ends 31 of the corresponding rotating arms 30 can be pressed respectively by utilizing the lever principle so that the corresponding rotating arms 30 can rotate synchronously along the rotating direction of the button 20, and the corresponding pull-wire arm 40 is driven to move by the driving end 32 of the corresponding rotating arm 30 to pull the pull-wire assembly 60 to realize the switching action. The pull-wire assembly 60 can be connected to a motorcycle lock such as a seat lock, a fuel tank lock or a front box lock, and the action of the corresponding motorcycle lock is realized by the action of the pull-wire assembly 60. In addition, since the rotating shafts 50 of the two rotating arms 30 are located in the middle position of themselves, the rotating shafts 50 serve as a rotating fulcrum, and the driving torque given to the rotating arm 30 by the button 20 is the same as the resistance torque given to the rotating arm 30 by the pull-wire arm 40 and the pull-wire assembly 60, which is equivalent to a seesaw, saving effort and facilitating button operation, and can improve the user experience.

[0033] Specifically, in order to facilitate the cooperation between the rotating arm 30 and the button 20 and the pull-wire arm 40, the two rotating arms 30 are respectively arranged side by side close to the two inner walls of the shell 10, and the two rotating arms 30 are in opposite directions. The pressure-bearing end 31 of the rotating arm 30 is larger than the driving end 32. The pressure-bearing end 31 is arranged close to the button 20 for pressure, and the driving end 32 is away from the button 20, so as to prevent the driving end 32 of one rotating arm 30 from affecting the button 20 to drive the other rotating arm 30 to rotate.

[0034] In the optional scheme of this embodiment, it is more preferred that the button 20 is rotatably connected to the shell 10 through a rotating member 70, and the rotating member 70 is rotatably connected to the inner wall of the shell 10 through a rotating shaft, and the button 20 passes through the side wall of the shell 10 and is fixedly connected to the rotating member 70; and the rotating member 70 is connected to a first reset component 80, and the button 20 can drive the rotating member 70 to rotate relative to the shell 10 and cause the first reset component 80 to elastically deform, and the button 20 and the rotating member 70 can return to their original position under the restoring force of the first reset component 80; by arranging the rotating member 70 to cooperate with the first reset component 80, after the button 20 rotates, the restoring force of the first reset component 80 can make the button 20 automatically return to its original position, which is convenient for the next use; wherein the rotating member 70 can be connected to the button 20 by bolts.

[0035] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 3The first reset component 80 includes a steel ball 81 and a spring 82, wherein the steel ball 81 is fixedly arranged at one end of the spring 82, and the other end of the spring 82 is fixedly connected to the inner wall of the housing 10; a groove 71 is arranged on one side wall of the rotating member 70 close to the spring 82, and the steel ball 81 is embedded in the groove 71; the button 20 can drive the rotating member 70 to rotate relative to the housing 10 and squeeze the spring 82 along the rotation direction to elastically deform the spring 82; the groove 71 is arranged to prevent the steel ball 81 from shifting, wherein the rotating member 70 is rotatably connected to the housing 10 through a pin arranged in the middle, and the groove 71 can be arranged in the middle of one side of the rotating member 70, and during the rotation of the rotating member 70, the spring 82 can be tilted along the rotation direction and then elastically deformed to generate a restoring force.

[0036] Furthermore, a groove for facilitating the movement of the spring 82 and the steel ball 81 may be provided on the inner wall of the housing 10 to avoid interference between the movement of the steel ball 81 and the spring 82 and the inner wall of the housing 10 after the housing 10 is assembled.

[0037] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 4 and Figure 7 A stop groove 72 is provided on one side wall of the rotating member 70 away from the spring 82, and a through groove 11 is provided at a position opposite to the stop groove 72 of the housing 10, and a stop member 90 penetrating the through groove 11 can be embedded in the stop groove 72 to maintain the relative position of the rotating member 70 and the housing 10; when it is necessary to lock the button 20 to prevent it from being pressed and rotated, the stop member 90 penetrates the through groove 11 and is embedded in the stop groove 72, and the rotating member 70 will not rotate, thereby limiting the rotation of the button 20.

[0038] Specifically, the stop member 90 can be set as a plug plate or a locking plate, and the rotating member 70 can be set as a C-shaped plate; the stop member 90 can be connected to an external driving mechanism such as a conventional ignition switch lock structure, which is used to drive the plug plate or the locking plate to move to achieve rotation restriction of the rotating member 70, such as the ignition switch lock provided in patent CN201920101116.2.

[0039] In the optional scheme of this embodiment, it is more preferred that the two wire pulling arms 40 can be slidably arranged in the housing 10 along a straight line direction, and the sliding directions of the two wire pulling arms 40 are parallel; by making the wire pulling arms 40 slide straightly to pull the wire pulling assembly 60, compared with the existing Figure 1 The pull wire assembly 60 is pulled through a rotating path to optimize the path, which can further save the volume size of the entire push-type double-pull wire switch 1.

[0040] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 5Two parallel slide grooves 12 are provided on the inner wall of the shell 10, and the two pull-wire arms 40 can be slidably connected to the two slide grooves 12 respectively; the pull-wire arm 40 has a sliding protrusion 42 that cooperates with the slide groove 12 to realize linear movement; specifically, since the two rotating arms 30 are arranged side by side in the direction close to the two inner walls of the shell 10 respectively, the two slide grooves 12 are correspondingly provided on the two inner walls of the shell, so as to cooperate with the sliding protrusion 42 on the pull-wire arm 40.

[0041] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 4 A connecting plate 41 is provided on the side of the two wire pulling arms 40 facing away from the wire pulling assembly 60, and the driving end 32 is provided with an arc surface. The driving end 32 slides against one side of the connecting plate 41. During the rotation of the rotating arm 30, the driving end 32 slides with the connecting plate 41 to make the wire pulling arm 40 move in a straight line; the driving end 32 is provided with an arc surface to facilitate sliding cooperation with the connecting plate 41.

[0042] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 6 Two placement grooves 13 are also provided on the inner wall of the shell 10, and the second reset component can be placed in the placement grooves 13. The two pull-wire arms 40 are respectively connected to the two second reset components, and the second reset components can be elastically deformed during the movement of the pull-wire arms 40; by providing the placement grooves 13, the second reset component can be placed as needed, so that the restoring force of the second reset component can return the pull-wire arm 40 to its original position; specifically, the second reset component can be set as a spring, and the two ends of the spring are respectively fixedly connected to the pull-wire arm 40 and the inner wall of the shell 10.

[0043] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 5 and Figure 6 Two limit blocks 14 are fixedly provided on the inner wall of the shell 10. The two limit blocks 14 are located on the side of the two rotating arms 30 away from the button 20, and can abut against the position of the corresponding rotating arm 30 close to the driving end 32; by setting the limit blocks 14, the rotation of the rotating arm 30 is limited, that is, the rotating arm 30 needs to rotate clockwise under the drive of the button 20, and the limit blocks 14 can prevent the rotating arm 30 from excessively returning counterclockwise and affecting the next driving of the button 20; correspondingly, the limit blocks 14 are provided on the opposite side walls of the shell 10 to limit the corresponding rotating arm 30.

[0044] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 5A fixing plate 15 is fixedly provided on the side of the shell 10 away from the button 20, the wire body 61 of the wire assembly 60 is fixedly connected to the fixing plate 15, and the wire head 62 of the wire assembly 60 is fixedly connected to the corresponding wire arm 40; the fixing plate 15 is fixedly provided in the shell 10, and the wire head 62 moves synchronously with the wire arm 40 to pull the wire in the wire body 61 to realize the switching action, wherein the wire body 61 can be fixedly clamped in the clamping groove provided on the fixing plate 15, and the wire head 62 is embedded in the clamping groove of the wire arm 40; specifically, the pulling end of the wire in the wire body 61 can be connected to the lock tongue of the seat lock plate or the front box lock or the fuel tank lock, and the switching action is realized by pulling the lock tongue of the seat lock plate or the front box lock or the fuel tank lock.

[0045] Further preferably, the fixing plate 15 can be detachably disposed in the housing 10 , such as being snapped into a snap-in groove on the inner wall of the housing 10 , to facilitate installation and disassembly. The fixing plate 15 can be made of metal to increase its service life.

[0046] In the optional solution of this embodiment, it is more preferred that the housing 10 provided in this embodiment can be connected by multiple half shells through a detachable manner such as bolts or clamping, so as to assemble or disassemble the whole; see Figure 2 Both sides of the housing 10 are provided with mounting holes 16 for connecting with external electronic lock bolts.

[0047] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A push-type double-pull switch, characterized in that: The invention comprises a housing (10), a button (20), two rotating arms (30) and two wire-pulling arms (40); the two rotating arms (30) are arranged side by side in the housing (10) and a rotating shaft (50) runs through the middle of the two rotating arms (30); the two rotating arms (30) can be rotatably connected to the housing (10) through the rotating shaft (50); the two ends of each rotating arm (30) are respectively a pressure-bearing end (31) and a driving end (32), and the two driving ends (32) are located on both sides of the rotating shaft (50); the two wire-pulling arms (40) are arranged side by side on both sides of the rotating shaft (50) and can be movably arranged in the housing (1 ...rotatably connected to the housing (10) through the rotating shaft (50); the two wire-pulling arms (40) are arranged side by side on both sides of the rotating shaft (50) and can be movably arranged in the housing (10); the two wire-pulling arms (40) are arranged side by side on both sides of the rotating shaft (50) and can be movably arranged in the housing (10); the two wire-pulling arms (40) are arranged side by side One end of the wire arm (40) is respectively connected to the two driving ends (32), and the other ends of the two wire-pulling arms (40) are respectively connected to the two wire-pulling assemblies (60); the button (20) is rotatably connected to the shell (10), one side of the button (20) extends out of the shell (10) and both ends are pressing ends (21), and the other side of the button (20) is located in the shell (10) and both ends can respectively abut against the two pressure-receiving ends (31); pressing one of the pressing ends (21) of the button (20) causes one of the pressure-receiving ends (31) to be pressed to rotate around the rotating shaft (50) and drive the wire-pulling arm (40) to move to pull the corresponding wire-pulling assembly (60).

2. The push-type double-pull switch according to claim 1, characterized in that: The button (20) is rotatably connected to the housing (10) via a rotating member (70); the rotating member (70) is rotatably connected to the inner wall of the housing (10); the button (20) passes through the side wall of the housing (10) and is fixedly connected to the rotating member (70); and the rotating member (70) is connected to a first reset member (80); the button (20) can drive the rotating member (70) to rotate relative to the housing (10) and cause the first reset member (80) to undergo elastic deformation; the button (20) and the rotating member (70) can return to their original positions under the restoring force of the first reset member (80).

3. The push-type double-pull switch according to claim 2, characterized in that: The first reset component (80) comprises a steel ball (81) and a spring (82); the steel ball (81) is fixedly arranged at one end of the spring (82), and the other end of the spring (82) is fixedly connected to the inner wall of the housing (10); a groove (71) is arranged on a side wall of the rotating member (70) close to the spring (82), and the steel ball (81) is embedded in the groove (71); the button (20) can drive the rotating member (70) to rotate relative to the housing (10) and squeeze the spring (82) along the rotation direction so that the spring (82) undergoes elastic deformation.

4. The push-type double-pull switch according to claim 3, characterized in that: A stop groove (72) is provided on a side wall of the rotating member (70) facing away from the spring (82), and a through groove (11) is provided at a position of the housing (10) opposite to the stop groove (72), and a stop member (90) penetrating the through groove (11) can be embedded in the stop groove (72) to maintain the relative position of the rotating member (70) and the housing (10).

5. The push-type double-pull switch according to claim 1, characterized in that: The two wire pulling arms (40) are slidably arranged in the housing (10) along a linear direction, and the sliding directions of the two wire pulling arms (40) are parallel.

6. The push-type double-pull switch according to claim 5, characterized in that: The inner wall of the shell (10) is provided with two parallel sliding grooves (12), and the two wire pulling arms (40) can be slidably connected to the two sliding grooves (12) respectively.

7. The push-type double-pull switch according to claim 5, characterized in that: A connecting plate (41) is provided on one side of the two wire pulling arms (40) facing away from the wire pulling assembly (60), and the driving end (32) is provided with an arc surface, and the driving end (32) is slidably abutted against one side of the connecting plate (41).

8. The push-type double-pull switch according to claim 1, characterized in that: Two placement grooves (13) are also provided on the inner wall of the shell (10), and a second reset component can be placed in the placement groove (13). The two pull-wire arms (40) are respectively connected to the two second reset components, and the second reset components can be elastically deformed during the movement of the pull-wire arms (40).

9. The push-type double-pull switch according to claim 1, characterized in that: Two limit blocks (14) are fixedly arranged on the inner wall of the housing (10); the two limit blocks (14) are located on the side of the two rotating arms (30) away from the button (20) and can abut against the position of the corresponding rotating arm (30) close to the driving end (32).

10. The push-type double-pull switch according to claim 1, characterized in that: A fixing plate (15) is fixedly provided on a side of the shell (10) facing away from the button (20); a wire pulling body (61) of the wire pulling assembly (60) is fixedly connected to the fixing plate (15); and a wire pulling head (62) of the wire pulling assembly (60) is fixedly connected to the corresponding wire pulling arm (40).

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