Instrument convenient to manufacture and assemble

Abstract

The invention relates to the technical field of instruments, and discloses an instrument convenient to manufacture and assemble, which comprises an instrument shell, a circuit board and a data line, the data line is connected with the instrument shell in a pluggable mode, a sealing ring is arranged on the inner side wall of the annular step groove in a protruding mode, and a sealing groove matched with the sealing ring is formed in the side face of the annular plugging head; the instrument shell is provided with a displayer and an installation end face opposite to the displayer, the installation end face is concaved inwards to form a bunching cavity, transition wire grooves communicated with the bunching cavity are formed in the two sides of an external opening of the bunching cavity respectively, and an arc-shaped wire buckling clamp is arranged on the installation end face. The instrument housing is provided with a dustproof cover plate used for sealing and covering the wire bunching cavity. Through modularized plugging connection, sealing shock resistance, cable management and a rapid installation structure, the assembly efficiency, the environmental adaptability and the maintenance convenience of the instrument are remarkably improved, the instrument is particularly suitable for vehicle-mounted, industrial and other complex working condition scenes, and the instrument has the advantages of being high in reliability and long in service life.

Description

Technical Field

[0001] The present invention relates to the technical field of instruments, and more particularly to an instrument that is convenient for manufacturing and assembling. Background Art

[0002] With the continuous development of society and the continuous progress of technology, electric bicycles have become one of the most commonly used means of transportation in people's daily travel. An electric bicycle is an improved means of transportation equipped with a motor, a storage battery, a control system, an instrument, and operating components on the basis of an ordinary bicycle. Among them, the instrument of an electric bicycle is an instrument for displaying various data. The instrument is electrically connected to the controller and the key head through data lines respectively. In this way, by operating the keys of the key head, the controller can be controlled, and parameters such as the controller can be displayed on the instrument, which is one of the essential accessories of an electric bicycle.

[0003] Most of the existing instruments for electric bicycles are of an integral structure, and the data lines are directly welded to the circuit board in the instrument, resulting in the need to wait for the matching of the data lines when manufacturing and assembling the instrument. Moreover, the data lines need to be welded to the circuit board in the instrument to complete the assembly of the instrument, and it is not convenient to connect to the handlebar or the vehicle frame, which is not convenient for the installation of the device and greatly reduces the manufacturing and assembling efficiency of the instrument. Summary of the Invention

[0004] The purpose of the present invention is to provide an instrument that is convenient for manufacturing and assembling, aiming to solve the problem of low manufacturing and assembling efficiency of the instrument in the prior art.

[0005] The instrument that is convenient for manufacturing and assembling according to the present invention includes an instrument housing, a circuit board provided in the instrument housing, and a data line; the data line is detachably connected to the instrument housing, a plug-in cavity is provided on the side wall of the instrument housing, and a conductive elastic sheet that conducts with the circuit board is provided at the bottom of the plug-in cavity; one end of the data line is electrically connected to the controller or the key head, the other end of the data line has a head end, a plug is provided on the head end, and a conductive contact is embedded in the plug; when the data line is inserted into the plug-in cavity through the plug, the conductive contact is electrically connected to the conductive elastic sheet to realize the electrical connection between the data line and the circuit board; An annular step groove is formed by expanding the upper part of the plug-in cavity outward, and an annular plug and unplug head that matches the shape of the annular step groove is convexly provided on the upper part of the plug; When the data line is inserted into the plug-in cavity through the plug, the bottom of the annular plug and unplug head abuts against the bottom of the annular step groove, and the outer periphery of the annular plug and unplug head abuts against the inner side wall of the annular step groove; A sealing ring protrudes from the inner side wall of the annular stepped groove. The sealing ring is arranged circumferentially along the inner wall of the annular stepped groove. A sealing groove matching with the sealing ring is formed on the side surface of the annular plug connector. When the annular plug connector is completely inserted into the annular stepped groove, the sealing ring and the sealing groove form a circumferential compression seal. A display is provided on the instrument housing. The display is electrically connected to the circuit board. The instrument housing has an installation end surface arranged opposite to the display. The external opening of the plugging cavity is located on the installation end surface. A wire bundling cavity is formed by inwards recessing on the installation end surface. Transition wire grooves communicating with the wire bundling cavity are respectively formed on both sides of the external opening of the wire bundling cavity. An arc-shaped wire clamping clip is provided on the installation end surface. One end of the wire clamping clip is hinged to the installation end surface. The other end of the wire clamping clip is snap-connected to the installation end surface. The wire clamping clip is installed on both sides of the transition wire groove. A dust-proof cover plate for covering the wire bundling cavity is provided on the instrument housing. The dust-proof cover plate is hinged to the instrument housing.

[0006] Further, an anti-seismic buffer layer is provided on the inner side wall of the plugging cavity. The anti-seismic buffer layer is made of silica gel.

[0007] Further, external screw holes are respectively formed on both sides of the end head. An installation platform protrudes from the instrument housing. The installation platform is arranged circumferentially around the external opening of the plugging cavity. Two internal screw holes are formed on the installation platform. The two internal screw holes are respectively located on both sides of the plugging cavity. The end head is connected to the installation platform by screws passing through the external screw holes and the internal screw holes.

[0008] Further, a limiting convex block protrudes from the installation platform. When the end head is installed on the installation platform, one side of the end head abuts against the limiting convex block.

[0009] Further, a horizontal fastener for connecting with the vehicle rod is provided on the instrument housing. One end of the horizontal fastener is rotatably connected to the limiting convex block.

[0010] Further, the horizontal fastener includes a connecting bar and a fastening bar that encloses a fastening cavity with the connecting bar. One end of the fastening bar is hinged to one end of the connecting bar. The other end of the fastening bar is connected to the connecting bar by screws. The other end of the connecting bar is rotatably connected to the limiting convex block.

[0011] Further, when two limiting convex blocks protrude from the installation platform, the two limiting convex blocks are relatively spaced to form a limiting area. The limiting area is located above the plugging cavity and is interconnected between them. Horizontal fasteners are respectively connected to the two limiting convex blocks.

[0012] Further, clamping pieces are respectively protruded on both sides of the installation platform. The clamping pieces are located in the limiting area, and one side of the clamping pieces is butted against the limiting bumps; a clamping groove matching the outer shape of the clamping piece is formed in an inward concave shape at the bottom of the end head.

[0013] Further, a fixing rod is protruded in the wire bundling cavity. The fixing rod is vertically fixed in the wire bundling cavity. A rotating shaft is connected to the fixing rod. The bottom of the rotating shaft is rotatably connected to the fixing rod. The rotating shaft is coaxially arranged with the wire hanging rod. A scroll spring is arranged on the rotating shaft. A wire winding cylinder is sleeved on the rotating shaft. Limiting disks are respectively arranged at the upper and lower ends of the wire winding cylinder. A winding area is relatively spaced between the two limiting disks. The outer end of the scroll spring extends spirally along the length direction of the fixing rod and is connected to the bottom of the scroll spring. The inner end of the scroll spring is connected to the rotating shaft.

[0014] Further, a wire guiding wheel is arranged at the entrance of the wire bundling cavity. An anti-slip rubber layer is arranged on the surface of the guiding wheel. The wire guiding wheel and the transition wire groove are oppositely arranged. The rim of the guiding wheel has a V-shaped groove structure. A nested seat for docking with the rotating shaft is arranged on the dust-proof cover plate. A bearing is arranged at the top of the rotating shaft. The bearing is inserted and nested with the nested seat.

[0015] Compared with the prior art, the instrument provided by the present invention, through modular pluggable connection, sealing and earthquake resistance, cable management and quick installation structure, significantly improves the assembly efficiency, environmental adaptability and maintenance convenience of the instrument, is especially suitable for complex working condition scenarios such as vehicle-mounted and industrial, has the characteristics of high reliability and long service life, and solves the problem of relatively low manufacturing and assembly efficiency of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front perspective schematic diagram of the instrument provided by the present invention that is easy to manufacture and assemble; Figure 2 is a rear perspective schematic diagram of the instrument provided by the present invention that is easy to manufacture and assemble; Figure 3 is a rear perspective exploded schematic diagram of the instrument provided by the present invention that is easy to manufacture and assemble; Figure 4 is a front view structural schematic diagram of the data cable provided by the present invention; Figure 5 is a sectional structural schematic diagram of the instrument provided by the present invention that is easy to manufacture and assemble; Figure 6 is a three-dimensional schematic diagram of the instrument housing provided by the present invention; Figure 7 is an exploded three-dimensional schematic diagram of the instrument housing provided by the present invention; Figure 8It is a schematic cross-sectional structure diagram of the wire bundling cavity and the rotating shaft provided by the present invention; Figure 9 It is the present invention Figure 8 The enlarged structure diagram of A in it.

[0017] In the figure: instrument housing 10, data cable 20, mounting platform 30, limiting bump 40, horizontal fastener 50, display 60, plug-in cavity 11, annular step groove 12, sealing ring 13, mounting end face 14, wire clamping clip 15, wire bundling cavity 16, transition wire groove 17, dust-proof cover plate 18, nested seat 19, fixing rod 161, rotating shaft 162, scroll spring 163, wire winding drum 164, limiting disc 165, bearing 166, end 21, plug 22, annular plug 23, sealing groove 24, external screw hole 25, clamping groove 211, internal screw hole 31, clamping piece 32, connecting strip 51, fastening strip 52, fastening cavity 53. Specific embodiments

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The implementation of the present invention will be described in detail below in combination with specific embodiments.

[0020] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] Refer to Figures 1-9 As shown, it is a preferred embodiment provided by the present invention.

[0022] An instrument facilitating manufacturing and assembly, comprising an instrument housing 10, a circuit board disposed within the instrument housing 10, and a data cable 20; the data cable 20 is detachably connected to the instrument housing 10, a plug-in cavity 11 is formed on the side wall of the instrument housing 10, and a conductive elastic sheet electrically connected to the circuit board is provided at the bottom of the plug-in cavity 11; one end of the data cable 20 is electrically connected to a controller or a key head, the other end of the data cable 20 has an end head 21, a plug 22 is provided on the end head 21, and a conductive contact is embedded in the plug 22; when the data cable 20 is inserted into the plug-in cavity 11 through the plug 22, the conductive contact is electrically connected to the conductive elastic sheet, realizing the electrical connection between the data cable 20 and the circuit board; The upper part of the plug-in cavity 11 expands outward to form an annular step groove 12, and the upper part of the plug 22 protrudes outward to form an annular plug-in head 23 matching the shape of the annular step groove 12; When the data cable 20 is inserted into the plug-in cavity 11 through the plug 22, the bottom of the annular plug-in head 23 abuts against the bottom of the annular step groove 12, and the outer periphery of the annular plug-in head 23 abuts against the inner side wall of the annular step groove 12; A sealing ring 13 protrudes from the inner side wall of the annular step groove 12, the sealing ring 13 is arranged circumferentially along the inner wall of the annular step groove 12, and a sealing groove 24 matching the sealing ring 13 is formed on the side surface of the annular plug-in head 23; when the annular plug-in head 23 is completely inserted into the annular step groove 12, the sealing ring 13 and the sealing groove 24 form a circumferential compression seal; A display 60 is provided on the instrument housing 10, the display 60 is electrically connected to the circuit board, the instrument housing 10 has an installation end surface 14 arranged opposite to the display 60, and the external opening of the plug-in cavity 11 is located on the installation end surface 14; A wire bundling cavity 16 is recessed inward on the installation end surface 14, transition wire grooves 17 communicating with the wire bundling cavity 16 are respectively formed on both sides of the external opening of the wire bundling cavity 16, an arc-shaped wire clamping clip 15 is provided on the installation end surface 14, one end of the wire clamping clip 15 is hinged to the installation end surface 14, the other end of the wire clamping clip 15 is snap-connected to the installation end surface 14, and the wire clamping clip 15 is installed on both sides of the transition wire groove 17; a dust-proof cover plate 18 for covering the wire bundling cavity 16 is provided on the instrument housing 10, and the dust-proof cover plate 18 is hinged to the instrument housing 10.

[0023] The above-provided instrument facilitating manufacturing and assembly significantly improves the assembly efficiency, environmental adaptability, and maintenance convenience of the instrument through modular plug-in connection, sealing and shock resistance, cable management, and quick installation structure, is especially suitable for complex working condition scenarios such as vehicle-mounted and industrial, has the characteristics of high reliability and long service life, and solves the problem of low manufacturing and assembly efficiency of the instrument.

[0024] The specific structural technical advantages of the above-provided instrument are as follows: 1). The plug-in design of the data cable 20 and the plug-in cavity 11 simplifies the connection steps between the circuit board and the external device, without the need for welding or complex wiring, significantly reducing the difficulty of assembly; 2). Reliable electrical connection: The elastic contact between the conductive spring and the contact ensures the stability of the electrical connection and avoids signal interruption caused by looseness; 3). Double sealing: The nested structure of the annular step groove 12 and the plug head provides the first layer of mechanical sealing; the circumferential compression of the sealing ring 13 and the sealing groove 24 forms the second layer of waterproof and dustproof barrier, which is suitable for outdoor or humid environment; 4) Optimized cable management: The cable cavity 16 centrally stores the redundant parts of the data cable 20, the transition cable groove 17 guides the cable direction, and the cable clip 15 uses a hinged and buckled design to quickly fix the cable to avoid entanglement; 5) Dust protection: The dust cover 18 covers the opening of the cable cavity 16 to prevent dust from entering the interior, and the hinged design facilitates opening and closing for maintenance; 6). Optimization of human-computer interaction: The alignment layout of the display 60 and the mounting end surface 14 facilitates the user to observe data, and the opening of the plug-in cavity 11 is located on the mounting end surface 14, ensuring that the plug-in and pull-out operations are ergonomic.

[0025] In this embodiment, an anti-vibration buffer layer is provided on the inner wall of the plug-in cavity 11, and the anti-vibration buffer layer is made of silicone material.

[0026] The silica gel anti-vibration buffer layer on the inner wall of the plug cavity 11 can absorb external vibration or impact energy, prevent the contact point between the conductive spring and the plug 22 from loosening or poor contact due to vibration, and improve the connection stability.

[0027] In this embodiment, external screw holes 25 are respectively provided on both sides of the terminal 21, and a mounting platform 30 is protruded on the instrument housing 10. The mounting platform 30 is circumferentially arranged along the outer opening of the plug-in cavity 11. Two internal screw holes 31 are provided on the mounting platform 30, and the two internal screw holes 31 are respectively located on both sides of the plug-in cavity 11. The terminal 21 is connected to the mounting platform 30 by screws penetrating the external screw holes 25 and the internal screw holes 31.

[0028] The end 21 of the data cable 20 is locked with the mounting platform 30 by screwing the outer screw hole 25 and the inner screw hole 31, thereby enhancing the mechanical connection strength between the plug 22 and the plug-in cavity 11 and preventing detachment due to external pulling. The mounting platform 30 is designed around the plug-in cavity 11 to provide uniform force support and avoid deformation of the shell when the screws are tightened.

[0029] In this embodiment, a limiting protrusion 40 is convexly provided on the mounting platform 30 . When the end head 21 is mounted on the mounting platform 30 , one side of the end head 21 abuts against the limiting protrusion 40 .

[0030] The limiting bump 40 physically limits one side of the end 21, ensuring accurate angles and positions when the plug 22 is inserted into the insertion cavity 11, and preventing poor contact or structural damage caused by misalignment.

[0031] In this embodiment, a horizontal fastener 50 for connecting to the vehicle rod is provided on the instrument housing 10, and one end of the horizontal fastener 50 is rotatably connected to the limiting bump 40.

[0032] The rotational connection design between the horizontal fastener 50 and the limiting bump 40 enables the instrument housing 10 to flexibly adjust the installation angle with the vehicle rod, adapt to the fixing requirements of different scenarios, and expand the application range.

[0033] In this embodiment, the horizontal fastener 50 includes a connecting strip 51 and a fastening strip 52 that encloses a fastening cavity 53 with the connecting strip 51. One end of the fastening strip 52 is hingedly connected to one end of the connecting strip 51, the other end of the fastening strip 52 is connected to the connecting strip 51 by a screw, and the other end of the connecting strip 51 is rotatably connected to the limiting bump 40.

[0034] The fastening cavity 53 is quickly opened and closed by hinging the fastening strip 52, facilitating the installation and disassembly of the vehicle rod; the screw connection ensures firmness after fastening, preventing the vehicle rod from loosening in a bumpy environment.

[0035] In this embodiment, when two limiting bumps 40 protrude from the installation platform 30, the two limiting bumps 40 are spaced apart to form a limiting area. The limiting area is located above the insertion cavity 11 and the two are interconnected. Horizontal fasteners 50 are respectively connected to the two limiting bumps 40.

[0036] The design of double limiting bumps 40 and double fasteners enhances the connection strength between the instrument and the external structure, suitable for high-vibration environments; the limiting area reserves a routing space for the data cable 20, avoiding excessive bending of the cable and resulting in internal fracture, and ensuring centering positioning of the end 21 during insertion.

[0037] The two horizontal fasteners 50 are symmetrically installed on both sides of the instrument housing 10.

[0038] In this embodiment, clamping pieces 32 protrude from both sides of the installation platform 30. The clamping pieces 32 are located in the limiting area, and one side of the clamping piece 32 abuts against the limiting bump 40; the bottom of the end 21 is recessed inward to form a clamping groove 211 that matches the shape of the clamping piece 32.

[0039] The engagement design between the clamping piece 32 and the clamping groove 211 enhances the mechanical locking force between the end 21 and the installation platform 30; prevents the end 21 from accidentally falling off when the screw loosens, and improves the connection redundancy safety.

[0040] In this embodiment, a fixing rod 161 is convexly provided in the wire harness cavity 16, and the fixing rod 161 is vertically fixed in the wire harness cavity 16. A rotating shaft 162 is connected to the fixing rod 161, and the bottom of the rotating shaft 162 is rotatably connected to the fixing rod 161. The rotating shaft 162 is coaxially arranged with the wire hanging rod, and a volute spring 163 is provided on the rotating shaft 162. A wire take-up drum 164 is sleeved on the rotating shaft 162. Limiting plates 165 are respectively provided at the upper and lower ends of the wire take-up drum 164, and the two limiting plates 165 are relatively spaced to form a winding area. The outer end of the spiral spring 163 spirally extends along the length direction of the fixing rod 161 and is connected to the bottom of the spiral spring 163 , and the inner end of the spiral spring 163 is connected to the rotating shaft 162 .

[0041] The spiral spring 163 drives the rotating shaft 162 to automatically recycle the excess cables to reduce the entanglement of the cables; the limit plate 165 prevents the cables from escaping from the winding area to keep the wire harness neat; The rotating shaft 162 structure enables the wire take-up drum 164 to rotate freely, so as to meet the storage requirements of data cables 20 of different lengths and save the internal space of the wire bundling cavity 16 .

[0042] In this embodiment, a guide wheel is provided at the entrance of the wiring harness cavity 16, and a non-slip rubber layer is provided on the surface of the guide wheel. The guide wheel is arranged opposite to the transition wire groove 17, and the rim of the guide wheel is a V-shaped groove structure. A nesting seat 19 docking with the rotating shaft 162 is provided on the dust cover plate 18, and a bearing 166 is provided on the top of the rotating shaft 162, and the bearing 166 is plugged and nested with the nesting seat 19.

[0043] Guide wheel and anti-skid rubber layer: The V-groove guide wheel guides the data cable 20 to smoothly enter the cable cavity 16, and the anti-skid layer reduces the wear of the cable; the nesting seat 19 cooperates with the bearing 166 to ensure the smooth rotation of the rotating shaft 162 and reduce the resistance of the cable collection.

[0044] Integrated function of the dust cover 18: through the docking of the nesting seat 19 and the rotating shaft 162, the dust cover 18 also assumes the protection function of the take-up mechanism, simplifying the structural design.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An instrument facilitating manufacturing and assembly, characterized in that, It includes an instrument housing, a circuit board disposed within the instrument housing, and a data cable; the data cable is detachably connected to the instrument housing, a plug-in cavity is formed on the side wall of the instrument housing, and a conductive elastic sheet electrically connected to the circuit board is provided at the bottom of the plug-in cavity; one end of the data cable is electrically connected to a controller or a key head, the other end of the data cable has a head end, a plug is provided on the head end, and a conductive contact is embedded in the plug; when the data cable is inserted into the plug-in cavity through the plug, the conductive contact is electrically connected to the conductive elastic sheet, realizing the electrical connection between the data cable and the circuit board; An annular step groove is formed by outward expansion of the upper part of the plug-in cavity, and an annular plug-in head matching the shape of the annular step groove is convexly provided on the upper part of the plug; When the data cable is inserted into the plug-in cavity through the plug, the bottom of the annular plug-in head abuts against the bottom of the annular step groove, and the outer periphery of the annular plug-in head abuts against the inner side wall of the annular step groove; A sealing ring is convexly provided on the inner side wall of the annular step groove, the sealing ring is arranged circumferentially around the inner wall of the annular step groove, and a sealing groove matching the sealing ring is formed on the side surface of the annular plug-in head; when the annular plug-in head is completely inserted into the annular step groove, the sealing ring and the sealing groove form a circumferential compression seal; A display is provided on the instrument housing, the display is electrically connected to the circuit board, the instrument housing has an installation end surface arranged opposite to the display, and the external opening of the plug-in cavity is located on the installation end surface; A wire bundling cavity is formed by inward depression on the installation end surface, transition wire grooves communicating with the wire bundling cavity are respectively formed on both sides of the external opening of the wire bundling cavity, an arc-shaped wire clamping clip is provided on the installation end surface, one end of the wire clamping clip is hinged to the installation end surface, the other end of the wire clamping clip is snap-connected to the installation end surface, and the wire clamping clip is installed on both sides of the transition wire groove; a dust-proof cover plate for covering the wire bundling cavity is provided on the instrument housing, and the dust-proof cover plate is hinged to the instrument housing.

2. The instrument facilitating manufacturing and assembly according to claim 1, wherein An anti-seismic buffer layer is provided on the inner side wall of the plug-in cavity, and the anti-seismic buffer layer is made of silica gel.

3. The instrument facilitating manufacturing and assembly according to claim 2, characterized in that, External screw holes are respectively formed on both sides of the head end, an installation platform is convexly provided on the instrument housing, the installation platform is arranged circumferentially around the external opening of the plug-in cavity, two internal screw holes are formed on the installation platform, and the two internal screw holes are respectively located on both sides of the plug-in cavity. The head end is connected to the installation platform by screwing through the external screw holes and the internal screw holes.

4. The instrument facilitating manufacturing and assembly according to claim 3, wherein, A limiting convex block is convexly provided on the installation platform. When the head end is installed on the installation platform, one side of the head end abuts against the limiting convex block.

5. The instrument facilitating manufacturing and assembly according to claim 4, characterized in that, A horizontal fastener for connecting with a vehicle rod is provided on the instrument housing, and one end of the horizontal fastener is rotatably connected to the limiting convex block.

6. The instrument facilitating manufacturing and assembly according to claim 5, characterized in that, The horizontal fastener includes a connecting strip and a fastening strip enclosing a fastening cavity with the connecting strip. One end of the fastening strip is hinged to one end of the connecting strip, the other end of the fastening strip is connected to the connecting strip by a screw, and the other end of the connecting strip is rotatably connected to the limiting convex block.

7. The instrument facilitating manufacturing and assembly as claimed in claim 6, wherein When there are two limiting bumps protruding from the installation platform, a limiting area is formed by the relative interval between the two limiting bumps. The limiting area is located above the insertion cavity and is interconnected between them. Horizontal fasteners are respectively connected to the two limiting bumps.

8. The instrument facilitating manufacturing and assembly according to claim 7, wherein, Clamping pieces are respectively protruded from both sides of the installation platform. The clamping pieces are located in the limiting area, and one side of the clamping piece is butted against the limiting bump; a clamping groove matching the outer shape of the clamping piece is formed by the inward concavity at the bottom of the end head.

9. The instrument facilitating manufacturing and assembly according to any one of claims 1 to 8, characterized in that, A fixing rod is protruded in the wire bundling cavity. The fixing rod is vertically fixed in the wire bundling cavity. A rotating shaft is connected to the fixing rod. The bottom of the rotating shaft is rotatably connected to the fixing rod. The rotating shaft is coaxially arranged with the wire hanging rod. A scroll spring is arranged on the rotating shaft. A wire winding cylinder is sleeved on the rotating shaft. Limiting disks are respectively arranged at the upper and lower ends of the wire winding cylinder. A winding area is formed by the relative interval between the two limiting disks; The outer end of the scroll spring extends spirally along the length direction of the fixing rod and is connected to the bottom of the scroll spring. The inner end of the scroll spring is connected to the rotating shaft.

10. The instrument facilitating manufacturing and assembly according to claim 9, characterized in that, A wire guiding wheel is arranged at the entrance of the wire bundling cavity. An anti-slip rubber layer is arranged on the surface of the guiding wheel. The wire guiding wheel and the transition wire groove are arranged oppositely. The rim of the guiding wheel has a V-shaped groove structure. A nested seat for docking with the rotating shaft is arranged on the dust-proof cover plate. A bearing is arranged on the top of the rotating shaft. The bearing is inserted and nested with the nested seat.

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