Electric outboard motor control device

Abstract

An electric outboard motor control device comprises a shell, a speed adjusting mechanism and a connecting mechanism, the speed adjusting mechanism and the connecting mechanism are arranged at the two ends of the shell, a knob assembly used for adjusting the rotating tightness of the speed adjusting mechanism is arranged on the speed adjusting mechanism, and the knob assembly comprises an adjusting piece connected to the speed adjusting mechanism in a sleeving mode and a wear-resisting piece connected with the speed adjusting mechanism in an abutting mode. The adjusting part is provided with a knob for adjusting the friction strength between the wear-resistant sheet and the speed adjusting mechanism; compared with the prior art, a user can adjust the rotation tightness degree of the speed adjusting mechanism according to requirements, so that the use habit of the user is met, the perception of the user on the accelerator state is improved, the feedback on the driving speed is improved, and accurate control on the ship speed is achieved; and the connecting block is moved to be separated from the outdoor unit, so that the outdoor unit can be conveniently lifted up from the water, rapid disassembly of the control device is further realized, and the outdoor unit can be lifted up more conveniently and rapidly.

Description

Technical Field

[0001] The utility model relates to the technical field of marine machinery, in particular to an electric outboard motor control device. Background Art

[0002] An electric outboard motor is a propulsion engine installed on the hull. Due to its high integration and simple installation and purchase, it has become the preferred power source for personal leisure and entertainment boats. It is also widely used in fisheries, commercial operations, and government law enforcement. When using an electric outboard motor, it is usually suspended on the transom of the ship. The control device (rudder) installed on the electric outboard motor is manually operated to realize the rotation of the electric outboard motor relative to the transom, thereby realizing the steering control of the ship.

[0003] When the electric outboard motor uses a control device to operate the steering, the control device and the electric outboard motor need to be well fixed to provide steering force, wherein the control device includes a fixing part and a handle. The fixing part allows the handle to be fixed in one direction and can be kept in that direction when turning. Turning the handle can drive the main engine to rotate together, thereby changing the direction of the ship. For portability, the handle will be easy to disassemble and fold down to reduce the size of the whole machine for easy carrying; and the handle can be freely swung upward to prevent the handle from touching the hull and causing damage when the electric outboard motor is lifted.

[0004] A Chinese patent with application number 202021924724.2 discloses a marine propeller control device and a marine propeller. The marine propeller control device disclosed above includes a fixed bracket, a control handle and a rotating shaft, and the control handle is detachably connected to the fixed bracket through the rotating shaft; wherein, one of the fixed bracket and the control handle is provided with a connecting portion, and the other is provided with an installing groove, and the installing groove is provided with a sliding member, and the sliding member is rotatably connected to the connecting portion through the rotating shaft. A Chinese patent with application number 202111500544.0 discloses a marine propeller control device and a marine propeller. The marine propeller control device disclosed above includes a first component and a second component, one of the first component and the second component is a fixing part, and the other is a handle, and the handle and the fixing part are detachably connected; the first component has a first mounting portion and a second mounting portion arranged opposite to each other, and a first rotating shaft is installed between the first mounting portion and the second mounting portion; the second component includes a component body and a hook structure, a rotating shaft mounting groove with an opening is formed on the component body, and the component body has a hollow cavity that passes through the rotating shaft mounting groove, the hook structure is arranged at the hollow cavity, and is rotatably connected to the component body, and the hook structure can switch between a snap-fit ​​position and a disengaged snap-fit ​​position.

[0005] In the above-mentioned prior art disclosed, the acceleration and deceleration of the propeller are achieved by rotating the control handle, and the tightness of the rotation of the existing override handle is fixed. When the user faces complex navigation conditions during navigation, it is impossible to clearly perceive the state of the throttle, and thus the feedback effect on the driving speed is poor, and it is impossible to achieve precise control of the ship speed. At the same time, when the propeller is to be lifted from underwater to the surface, the connection between the existing control device and the propeller is relatively complicated, and it is impossible to quickly separate and rotate the control device and the pusher, which makes it more troublesome to lift the propeller. Utility Model Content

[0006] The utility model aims to overcome the defects in the prior art and provides an electric outboard motor control device which can adjust the rotation tightness of the control handle, improve the throttle sense, and facilitate the quick separation of the control device from the outboard motor.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: an electric outboard motor control device, including a shell and a speed regulating mechanism and a connecting mechanism arranged at both ends of the shell, the speed regulating mechanism is provided with a knob assembly for adjusting the rotation tightness of the speed regulating mechanism, the knob assembly includes an adjusting piece sleeved on the speed regulating mechanism and a wear-resistant sheet abutting against the speed regulating mechanism, the adjusting piece is provided with a knob for adjusting the friction strength between the wear-resistant sheet and the speed regulating mechanism; the connecting mechanism includes a connecting block for connecting the outboard motor and a fastening spring for fastening the connecting block.

[0008] As a preferred solution of the utility model, the shell includes a first connecting part and a second connecting part, the speed regulating mechanism is connected to the first connecting part, the knob assembly is arranged in the first connecting part, an installation groove is formed on the second connecting part, and the connecting mechanism is arranged in the installation groove.

[0009] As a preferred solution of the utility model, the speed regulating mechanism includes a speed regulating rod connected to the first connecting part, a handle is provided at the end of the speed regulating rod, the adjusting member is sleeved on the speed regulating rod, and the speed regulating rod rotates in the adjusting member.

[0010] As a preferred solution of the utility model, the adjusting member is provided with an adjusting hole, an inner wall of the adjusting hole is formed with an internal thread, a knob is arranged in the adjusting hole, and an outer wall of the knob is formed with an external thread matching the internal thread.

[0011] As a preferred solution of the utility model, the wear-resistant sheet is fixedly arranged on the adjusting member, the tail of the knob abuts against the wear-resistant sheet, and a retaining spring is provided at the tail of the knob to prevent the knob from detaching from the adjusting member.

[0012] As a preferred solution of the utility model, a positioning hole is formed on the speed regulating rod, and a positioning pin matching the positioning hole is provided on the adjusting member. When the speed regulating rod is in the zeroing state, the positioning hole is arranged opposite to the positioning pin.

[0013] As a preferred solution of the utility model, the connecting mechanism also includes a box body for placing a connecting block and a fastening spring, a sliding space for facilitating the movement of the connecting block is formed in the box body, a dividing block is provided in the middle of the sliding space, and the fastening springs are respectively located in the sliding spaces on both sides of the dividing block.

[0014] As a preferred solution of the utility model, the connecting blocks are slidably arranged at opposite ends of the box body, and the connecting blocks are located in the sliding space, and the two ends of the fastening spring are respectively abutted against the connecting block and the separating block.

[0015] As a preferred solution of the utility model, slide grooves are formed at both ends of the box body, and a pressing block for driving the connecting block to move is provided on the connecting block, and the pressing block is slidably connected in the slide grooves.

[0016] As a preferred solution of the utility model, a connecting rod is provided on the connecting block, connecting holes are formed on both sides of the installation groove, and the connecting rod passes through the connecting holes to be connected to the external unit.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The rotation tightness of the speed regulating mechanism is adjusted by the cooperation between the wear-resistant sheet and the knob in the knob assembly. The user can adjust the rotation tightness of the speed regulating mechanism according to the needs, thereby satisfying the user's usage habits, improving the user's perception of the throttle state, and then improving the feedback of the driving speed, and realizing the precise control of the boat speed. In addition, the connection block is fastened to the outboard machine by the fastening spring, and the connection block is moved to separate the connection block from the outboard machine, which is convenient for lifting the outboard machine from the water, thereby realizing the rapid disassembly of the control device, making it more convenient and quick to lift the outboard machine;

[0019] 2. Furthermore, by providing a positioning hole on the speed regulating lever and a positioning pin matched with the positioning hole on the adjusting member, when the speed regulating lever is returned to zero, the positioning pin is snapped into the positioning hole, which will generate vibration and a snapping sound, and when the user turns the speed regulating lever, the rotational resistance of the speed regulating lever will increase, thereby achieving triple zeroing feedback for the user, improving the user's perception of speed zeroing, and ensuring that the user can receive speed zeroing feedback in different outdoor environments;

[0020] 3. Furthermore, a pressing block is provided on the connecting block, and the connecting block is moved into the box body by pushing the pressing block, so that the connecting rod is detached from the external unit, thereby realizing quick disassembly of the control device. In addition, a fastening spring is provided in the box body, and when the connecting rod is connected to the external unit, the elastic force of the fastening spring fastens the connecting rod in the external unit, thereby preventing the connecting block from moving and causing the connecting rod to be detached from the external unit, thereby improving the stability of the connection between the control device and the external unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the knob assembly of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the shell;

[0025] Figure 5 It is a structural diagram of the connecting mechanism;

[0026] Figure 6 This is a cross-sectional view of the connecting mechanism.

[0027] Figure markings: shell 1, first connecting part 101, second connecting part 102, mounting groove 1021, connecting hole 1022, speed regulating mechanism 2, speed regulating rod 201, positioning hole 2011, handle 202, connecting mechanism 3, box body 301, slide groove 3011, sliding space 3012, partition block 3013, connecting block 302, connecting rod 3021, pressing block 3022, fastening spring 303, knob assembly 4, knob 401, external thread 4011, retaining ring 4012, adjusting member 402, adjusting hole 4021, internal thread 4022, wear-resistant sheet 403, positioning pin 404. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 6 As shown, an electric outboard motor control device includes a shell 1 and a speed regulating mechanism 2 and a connecting mechanism 3 arranged at both ends of the shell 1, the speed regulating mechanism 2 is provided with a knob assembly 4 for adjusting the rotation tightness of the speed regulating mechanism 2, the knob assembly 4 includes an adjusting member 402 sleeved on the speed regulating mechanism 2 and a wear-resistant sheet 403 abutting against the speed regulating mechanism 2, the adjusting member 402 is provided with a knob 401 for adjusting the friction strength between the wear-resistant sheet 403 and the speed regulating mechanism 2; the connecting mechanism 3 includes a connecting block 302 for connecting the outboard motor and a fastening spring 303 for fastening the connecting block 302.

[0030] Furthermore, the speed regulating mechanism 2 and the connecting mechanism 3 are respectively located at opposite ends of the shell 1, and the speed regulating mechanism 2 is rotatably connected to the shell 1. By rotating the speed regulating mechanism 2, the acceleration and deceleration of the external machine can be realized, thereby realizing the forward and backward movement of the ship. In addition, the knob assembly 4 is sleeved on the speed regulating mechanism 2, and the rotation tightness of the speed regulating mechanism 2 is adjusted by rotating the assembly 4. The user can adjust the rotation tightness of the speed regulating mechanism 2 according to the needs, thereby satisfying the user's usage habits, improving the user's perception of the throttle state, and then improving the feedback on the driving speed, thereby realizing precise control of the ship speed.

[0031] In addition, when the boat is finished using, the outboard motor needs to be lifted out of the water to the surface, and the connecting block 302 is fastened in the outboard motor by means of the fastening spring 303. The connecting block 302 is moved to compress the fastening spring 303, thereby separating the connecting block 302 from the outboard motor, making it easier to lift the outboard motor from the water, thereby achieving rapid disassembly of the control device, improving the efficiency of the operation, and making it more convenient and quick to lift the outboard motor.

[0032] The housing 1 includes a first connecting portion 101 and a second connecting portion 102, the speed regulating mechanism 2 is connected to the first connecting portion 101, the knob assembly 4 is arranged in the first connecting portion 101, a mounting groove 1021 is formed on the second connecting portion 102, and the connecting mechanism 3 is arranged in the mounting groove 1021. Further, the interior of the housing 1 is a hollow structure, that is, the first connecting portion 101 and the second connecting portion 102 are also hollow, the first connecting portion 101 and the second connecting portion 102 are arranged along the length direction of the housing 1, and the first connecting portion 1 01 and the second connecting part 102 are respectively arranged at the opposite ends of the shell 1, the rotating component 4 is located in the hollow structure of the first connecting part 101, and the knob component 4 is located at the end of the first connecting part 101, the speed regulating mechanism 2 is arranged in the first connecting part 101, and is connected to the rotating component 4; the mounting groove 1021 is located at the end of the second connecting part 102, and the mounting groove 1021 is arranged along the width direction of the second connecting part 102, the opening of the mounting groove 1021 is arranged downward, and the connecting mechanism 3 is fixedly arranged in the mounting groove 1021.

[0033] The speed regulating mechanism 2 includes a speed regulating rod 201 connected to the first connecting part 101, a handle 202 is provided at the end of the speed regulating rod 201, an adjusting member 402 is sleeved on the speed regulating rod 201, and the speed regulating rod 201 rotates in the adjusting member 402. Furthermore, the speed regulating rod 201 is arranged along the length direction of the shell 1, the end of the speed regulating rod 201 is connected to the first connecting part 101, and the speed regulating rod 201 is rotatably connected to the first connecting part 101. The forward and backward movement of the ship is controlled by rotating the speed regulating rod 201 to the left and right. The adjusting member 402 is sleeved on the end of the speed regulating rod 201, and the adjusting member 402 is rotatably connected to the speed regulating rod 201.

[0034] An adjusting hole 4021 is provided on the adjusting member 402, an internal thread 4022 is formed on the inner wall of the adjusting hole 4021, the knob 401 is arranged in the adjusting hole 4021, and an external thread 4011 matching the internal thread 4022 is formed on the outer wall of the knob 401. Furthermore, the adjusting hole 4021 is arranged along the radial direction of the speed regulating rod 201, the knob 401 is arranged in the adjusting hole 4021, and the connection between the knob 401 and the adjusting hole 4021 is realized by the internal thread 4022 and the external thread 4011.

[0035] The wear-resistant sheet 403 is fixedly arranged on the adjusting member 402, and the tail of the knob 401 abuts against the wear-resistant sheet 403, and the tail of the knob 401 is provided with a retaining spring 4012 to prevent the knob 401 from being separated from the adjusting member 402. Furthermore, one end of the wear-resistant sheet 403 is fixedly arranged on the adjusting member 402, and the knob 401 abuts against the other end of the wear-resistant sheet 403. By rotating the knob 401, the wear-resistant sheet 403 is pressed against the rod wall of the speed regulating rod 201, thereby increasing or decreasing the friction strength between the wear-resistant sheet 403 and the speed regulating rod 201, and increasing or decreasing the friction force of the speed regulating rod 201 when rotating, thereby realizing the adjustment of the tightness of the rotation of the speed regulating rod, satisfying the user's usage habits, and improving the user's perception of the throttle state.

[0036] In addition, the retaining spring 4012 is engaged with the tail end of the knob 401 , and the moving distance of the knob 401 is limited by the retaining spring 4012 , thereby preventing the knob 401 from being separated from the adjusting member 402 .

[0037] A positioning hole 2011 is formed on the speed regulating rod 201, and a positioning pin 404 matching with the positioning hole 2011 is provided on the adjusting member 402. When the speed regulating rod 201 is in the zeroing state, the positioning hole 2011 is arranged opposite to the positioning pin 404. Further, the positioning hole 2011 is arranged on the rod wall of the speed regulating rod 201, and the positioning hole 2011 is located at the end of the speed regulating rod 201, and the positioning pin 404 is arranged on the inner wall of the adjusting member 402. When the speed regulating rod 201 is rotated to adjust the speed, when the speed regulating rod 201 returns to the position of zero speed, the positioning pin 404 is just located opposite to the positioning hole 2011. At this time, the positioning pin 404 is engaged with the positioning hole 2011, and the user holding the handle 202 will feel the vibration feedback of the positioning pin 404 being engaged with the positioning hole 2011. At the same time, there will be an engagement sound when the positioning pin 404 is engaged with the positioning hole 2011, and the user will hear the sound feedback. At this time, when the user is turning the speed control lever 201, the rotation resistance of the speed control lever 201 is increased under the action of the positioning pin 404 and the positioning hole 2011, which further gives the user zeroing feedback, ensuring that the user can receive speed zeroing feedback in different outdoor environments.

[0038] The connecting mechanism 3 also includes a box body 301 for placing a connecting block 302 and a fastening spring 303. A sliding space 3012 is formed in the box body 301 to facilitate the movement of the connecting block 302. A dividing block 3013 is provided in the middle of the sliding space 3012. The fastening springs 303 are respectively located in the sliding spaces 3012 on both sides of the dividing block 3013. Furthermore, both ends of the box body 301 are open structures. The sliding space 3012 is connected to the outside through the openings at both ends. Two connecting blocks 302 and two fastening springs 303 are each provided. The dividing block 3013 divides the sliding space 3012 into two parts. The two connecting blocks 302 are respectively located in the two sliding spaces 3012, and the two fastening springs 303 are also respectively located in the two sliding spaces 3012.

[0039] Specifically, the connecting block 302 is slidably arranged at the opposite ends of the box body 301, and the connecting block 302 is located in the sliding space 3012. The end of the connecting block 302 slides out of the sliding space 3012 and is connected to the external machine. The two ends of the fastening spring 303 respectively abut against the connecting block 302 and the partition block 3013. The fastening spring 303 is used to fasten the connection between the connecting block 302 and the external machine to prevent the connecting block 302 from detaching from the external machine.

[0040] Slide grooves 3011 are formed at both ends of the box body 301, and a pressing block 3022 is provided on the connecting block 302 to drive the connecting block 302 to move. The pressing block 3022 is slidably connected to the slide groove 3011. Furthermore, the slide groove 3011 is arranged on the outer wall of the box body 301, and the end of the slide groove 3011 facing the outside of the box body 301 is an open structure. The pressing block 3022 slides in the slide groove 3011, and the pressing block 3022 is moved toward the inner side of the box body 301, thereby moving the connecting block 302 inward, thereby making the connecting block 302 detached from the external unit, thereby realizing the rapid disassembly of the control device.

[0041] A connecting rod 3021 is provided on the connecting block 302, and connecting holes 1022 are formed on both sides of the mounting groove 1021. The connecting rod 3021 passes through the connecting hole 1022 to be connected to the external unit. Furthermore, the connecting rod 3021 is arranged on the side of the connecting block 302, and the connecting rod 3021 is arranged along the moving direction of the connecting block 302. The connecting rod 3021 passes through the connecting hole 1022 to be connected to the external unit. When the connecting block 302 moves, the connecting rod 3021 is driven to move, thereby realizing quick connection or separation with the external unit, and then realizing quick disassembly of the control device.

[0042] Method for controlling the tightness of the speed regulating rod 201: rotate the knob 401 toward the adjusting member 402, and squeeze the wear-resistant sheet 403 so that the friction surface of the wear-resistant sheet 403 rubs against the speed regulating rod 201. The upper and lower distances of the position of the knob 401 determine the deformation size of the wear-resistant sheet 403, thereby controlling the rotation tightness of the speed regulating rod 201. A retaining spring 4012 is provided at the tail of the knob 401 to prevent it from detaching from the adjusting member 402 during the use of the knob 401.

[0043] Speed ​​return to zero feedback (prompt in neutral state): a positioning hole 2011 is set on the speed control lever 201, and a positioning pin 404 engaged with the positioning hole 2011 is set on the inner wall of the adjustment member 402. The user's return to zero feedback is achieved through three methods: vibration and sound generated by the engagement of the positioning pin 404 with the positioning hole 2011, and increased resistance when the speed control lever 201 rotates after the engagement, that is, triple feedback is provided to the user.

[0044] Method for realizing quick loading and unloading: the operating device is rotated upward by 90°, and the pressing block 3022 is pressed inward, driving the connecting block 302 to move into the box body 301. After the connecting block 302 compresses the fastening spring 303, the connecting rod 3021 is separated from the main machine, and then quick loading and unloading can be realized.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0046] Although the following terms are used more frequently in this article: housing 1, first connection part 101, second connection part 102, mounting groove 1021, connection hole 1022, speed regulating mechanism 2, speed regulating rod 201, positioning hole 2011, handle 202, connecting mechanism 3, box body 301, sliding groove 3011, sliding space 3012, partition block 3013, connecting block 302, connecting rod 3021, pressing block 3022, fastening spring 303, knob assembly 4, knob 401, external thread 4011, retaining spring 4012, adjusting member 402, adjusting hole 4021, internal thread 4022, wear-resistant sheet 403, positioning pin 404, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An electric outboard motor control device, comprising a housing (1) and a speed regulating mechanism (2) and a connecting mechanism (3) arranged at two ends of the housing (1), characterized in that: The speed regulating mechanism (2) is provided with a knob assembly (4) for adjusting the rotation tightness of the speed regulating mechanism (2); the knob assembly (4) comprises an adjusting member (402) sleeved on the speed regulating mechanism (2) and a wear-resistant sheet (403) abutting against the speed regulating mechanism (2); the adjusting member (402) is provided with a knob (401) for adjusting the friction strength between the wear-resistant sheet (403) and the speed regulating mechanism (2); the connecting mechanism (3) comprises a connecting block (302) for connecting to an external unit and a fastening spring (303) for fastening the connecting block (302).

2. The electric outboard motor control device according to claim 1, characterized in that: The housing (1) comprises a first connecting portion (101) and a second connecting portion (102); the speed regulating mechanism (2) is connected to the first connecting portion (101); the knob assembly (4) is arranged in the first connecting portion (101); a mounting groove (1021) is formed on the second connecting portion (102); and the connecting mechanism (3) is arranged in the mounting groove (1021).

3. The electric outboard motor control device according to claim 2, characterized in that: The speed regulating mechanism (2) comprises a speed regulating rod (201) connected to the first connecting part (101), a handle (202) is provided at the end of the speed regulating rod (201), an adjusting member (402) is sleeved on the speed regulating rod (201), and the speed regulating rod (201) rotates in the adjusting member (402).

4. The electric outboard motor control device according to claim 1, characterized in that: The adjusting member (402) is provided with an adjusting hole (4021), an inner wall of the adjusting hole (4021) is formed with an internal thread (4022), the knob (401) is arranged in the adjusting hole (4021), and an outer wall of the knob (401) is formed with an external thread (4011) matching with the internal thread (4022).

5. The electric outboard motor control device according to claim 1, characterized in that: The wear-resistant sheet (403) is fixedly arranged on the adjusting member (402), the tail of the knob (401) abuts against the wear-resistant sheet (403), and a retaining spring (4012) is provided at the tail of the knob (401) to prevent the knob (401) from being separated from the adjusting member (402).

6. The electric outboard motor control device according to claim 3, characterized in that: The speed regulating rod (201) is formed with a positioning hole (2011), and the regulating member (402) is provided with a positioning pin (404) matched with the positioning hole (2011); when the speed regulating rod (201) is in a zeroing state, the positioning hole (2011) is arranged opposite to the positioning pin (404).

7. The electric outboard motor control device according to claim 1, characterized in that: The connecting mechanism (3) further comprises a box body (301) for accommodating the connecting block (302) and the fastening spring (303); a sliding space (3012) is formed in the box body (301) for facilitating the movement of the connecting block (302); a partition block (3013) is provided in the middle of the sliding space (3012); and the fastening springs (303) are respectively located in the sliding spaces (3012) on both sides of the partition block (3013).

8. The electric outboard motor control device according to claim 7, characterized in that: The connecting block (302) is slidably disposed at opposite ends of the box body (301), and the connecting block (302) is located in the sliding space (3012), and the two ends of the fastening spring (303) are respectively abutted against the connecting block (302) and the separating block (3013).

9. The electric outboard motor control device according to claim 7, characterized in that: Slide grooves (3011) are formed at both ends of the box body (301), and a pressing block (3022) is provided on the connecting block (302) for driving the connecting block (302) to move, and the pressing block (3022) is slidably connected in the slide groove (3011).

10. The electric outboard motor control device according to claim 2, characterized in that: The connecting block (302) is provided with a connecting rod (3021), and connecting holes (1022) are formed on both sides of the installation groove (1021). The connecting rod (3021) passes through the connecting holes (1022) to be connected to the external unit.

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