High-stability pointer type mechanical instrument head and installation method thereof

Abstract

The invention relates to the technical field of mechanical instruments, in particular to a high-stability pointer type mechanical instrument gauge outfit and an installation method thereof.The high-stability pointer type mechanical instrument gauge outfit is mainly composed of a gauge outfit upper support, a gauge outfit lower support, a balance cross, a movable coil, a magnetic conductive inner iron core, a magnetic conductive outer iron core and a magnet; through the cooperative use of the movable coil, the magnetic conductive inner iron core, the magnetic conductive outer iron core and the magnet, the stability of the meter head can be improved, the service life of the meter head can be prolonged, the meter hand is more sensitive, the precision is higher, and the precision is adjustable; in addition, glue is not needed for positioning in installation between the gauge head upper support and the gauge head lower support and installation between the magnet and the magnetic conductive inner iron core and the magnetic conductive outer iron core, and materials such as glue are abandoned; on the basis of environmental protection, the assembly working efficiency is improved; by arranging the stable connecting piece, the overall stability of the mechanical instrument head is improved; and the stable connecting pieces comprise the first stable connecting piece and the second stable connecting piece, so that the stable connecting work flexibility of the mechanical instrument head is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical instruments, in particular to a high-stability pointer-type mechanical instrument head and a mounting method thereof. Background Art

[0002] The existing document with announcement number CN109556644A discloses a mechanical instrument assembly, which includes a shell, a base and an instrument panel assembly, the base is arranged at the rear of the shell; the instrument panel assembly includes a pointer, a dial and a transparent cover, the dial is connected to the front side of the base and is arranged in the shell, the transparent cover is connected to the front of the shell, and the instrument panel assembly includes at least a first display area and a second display area that can be distinguished from each other, the first display area and the second display area are constructed to correspond to the scale markings of the dial respectively, and the measurement accuracy levels of the first display area and the second display area are different.

[0003] The existing meter head is composed of a metal base, a magnet, a magnet fixing ring, a magnet fixing cover, a magnetic core, an iron core seat, a meter head bracket, etc. Among them, the metal base, the magnet, the magnet fixing ring, and the magnet fixing cover are fixed by manual gluing, and then left to stand for more than two days for the glue to completely solidify before the next assembly operation can be carried out. The manual work is complicated and time-consuming, which greatly affects the production efficiency. The use of glue is not conducive to environmental protection and health. At the same time, under extreme conditions or after several years of use, there will be a risk of degumming. Moreover, a customized C-shaped magnet is used in the prior art, which must be magnetized with C-shaped pure iron before it can be used. The material cost is high and labor is wasted. Furthermore, the magnet, the magnetic core and the movable coil are not on the same structural plane and the accuracy cannot be adjusted. The pointer is inaccurate, the linear damping is too small, and it is easy to shake, and even the meter is stuck or stuck. The meter head bracket is divided into two parts, namely the upper bracket of the meter head and the lower bracket of the meter head. After the meter head assembly is assembled, the bracket of the meter head and the lower bracket of the meter head are connected by screws. A single screw connection is fixed, and there is a possibility of loosening when the meter head is vibrated, which has a negative impact on the overall connection stability of the instrument, thereby reducing the working stability of the meter head.

[0004] To this end, the present invention proposes a high-stability pointer-type mechanical instrument head and an installation method thereof to solve the above-mentioned problem. Summary of the invention

[0005] The object of the present invention is to provide a high-stability pointer-type mechanical instrument head and an installation method thereof to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a high-stability pointer-type mechanical instrument head, comprising a head upper bracket, a head lower bracket, a balance cross, a movable coil, a magnetic inner core, a magnetic outer core and a magnet; A cap is provided at the bottom end of the bracket on the meter head, and an auxiliary groove is provided at the top end of the cap; A connecting column is provided in the lower bracket of the meter head, and a connecting sleeve is fixedly provided on the top of the connecting column; The upper bracket of the meter head and the lower bracket of the meter head are connected to form a support frame, and the support frame is provided with a balance cross, a movable coil, a magnetic inner iron core, a magnetic outer iron core and a magnet; The upper bracket of the meter header and the lower bracket of the meter header are connected by a stable connecting piece, and the stable connecting piece.

[0007] Preferably, the magnetic outer iron core is arranged in the lower bracket of the meter head, the magnetic inner iron core is arranged in the lower bracket of the meter head, and the magnetic outer iron core is sleeved on the outside of the magnetic inner iron core, and the magnetic outer iron core and the magnetic inner iron core form a magnetic core; a movable coil is arranged on the magnetic core, and the movable coil is connected to the balance cross.

[0008] Preferably, a cylindrical through slot is provided through the center of the magnetic inner iron core, and an opening is provided on one side of the cylindrical through slot; inner wrapped card bodies are symmetrically provided on both sides of the opening.

[0009] Preferably, the magnetic outer core is configured to be C-shaped, and outer wrapping card bodies are symmetrically provided at both ends of the magnetic outer core; the outer wrapping card body and the inner wrapping card body form a wrapping cavity, and a magnet is provided in the wrapping cavity, and two magnets are provided.

[0010] Preferably, the stabilizing connector includes a first stabilizing connector, which includes a circular through hole, a connecting threaded cavity, a limiting slot, a stabilizing screw, an auxiliary screw head, a rubber pad, a limiting block, a positioning slot, a cylindrical slot and a concave stabilizing strip; the circular through hole is arranged at the bottom end of the auxiliary groove and passes through the sleeve cap, the connecting threaded cavity is arranged at the top end of the connecting sleeve, the limiting slot is symmetrically arranged in the auxiliary groove, the rubber pad is placed in the auxiliary groove, and the stabilizing screw passes through the circular through hole and is threadedly connected to the connecting threaded cavity.

[0011] Preferably, a limiting block is symmetrically fixedly arranged on the bottom end of the rubber pad body, and the limiting block and the limiting slot are adaptively engaged; and positioning slots are equidistantly arranged on the top surface of the rubber pad body.

[0012] Preferably, an auxiliary screw head is fixedly provided at one end of the stabilizing screw, and a cylindrical slot is symmetrically provided in the auxiliary screw head, and both ends of the concave stabilizing strip are inserted into the cylindrical slot.

[0013] Preferably, the stable connector also includes a second stable connector, which includes a square through hole, a first side slot, a docking groove body, a second side slot, a fastening card plate, a locking slot, a handle, a docking block, a connecting groove, a locking strip, an auxiliary pull head, a connecting spring, an auxiliary slope and a limit plate; the square through hole is arranged at the bottom end of the auxiliary groove, the first side slot is arranged at the side position of the sleeve cap, the docking groove body is arranged at the top end of the connecting sleeve head, the second side slot is arranged at the side position of the connecting sleeve head, and the second side slot is connected to the docking groove body, a handle is fixedly provided at one end of the fastening card plate, a locking slot is provided at the side position of the other end of the fastening card plate, and the docking block passes through the square through hole and is inserted into the docking groove body.

[0014] Preferably, a limit disk is fixedly provided at one end of the docking block, and a connecting slot is provided at the side position of the other end of the docking block, the locking strip is movably inserted in the docking block, one end of the locking strip extends into the connecting slot, and an auxiliary slope is provided on one side of the end, the other end of the locking strip extends to the outside of the limit disk, and an auxiliary pull head is fixedly provided at the end of the locking strip, the auxiliary pull head is fixedly provided with a connecting spring at the end connected to the locking strip, and the other end of the connecting spring is fixedly provided on the limit disk.

[0015] A method for installing a high-stability pointer-type mechanical instrument head, the installation method is: The magnet is placed in the wrapping cavity formed by the magnetic inner core and the magnetic outer core, and then installed on the lower bracket of the meter head. The movable coil and the balance cross are then installed. Finally, the upper bracket of the meter head and the lower bracket of the meter head are firmly connected through a stabilizing connector.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The mechanical meter head device designed in the present invention is mainly composed of a meter head upper bracket, a meter head lower bracket, a balancing cross, a movable coil, a magnetic inner iron core, a magnetic outer iron core and a magnet. On the one hand, through the coordinated use of the movable coil, the magnetic inner iron core, the magnetic outer iron core and the magnet, the stability and service life of the meter head can be improved, and the meter needle can be made more sensitive, more accurate, and the accuracy can be adjusted; the production process is simplified, the working hours are reduced, the production efficiency is improved, and the cost is reduced; furthermore, the installation between the meter head bracket, the meter head lower bracket and the magnet and the magnetic inner iron core and the magnetic outer iron core does not require the use of glue for positioning, and glue and other materials are discarded, and the green, environmentally friendly and healthy production concept is followed. On the basis of environmental protection, the assembly work efficiency is improved; the overall stability of the mechanical meter head is improved by the set stable connecting piece; and the stable connecting piece includes a first stable connecting piece and a second stable connecting piece, which improves the flexibility of the stable connection work of the mechanical meter head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the axonometric connection of the mechanical instrument head structure of the present invention; Figure 2 It is a front view of the mechanical instrument head structure connection of the present invention; Figure 3 This is an exploded schematic diagram of the connection structure of the mechanical instrument head of the present invention; Figure 4 It is a schematic diagram of the connection structure between the magnetic inner core and the magnetic outer core of the present invention; Figure 5 It is a top view of the local structural connection between the upper bracket of the meter head, the lower bracket of the meter head and the first stable connecting member of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structural connection at center A; Figure 7 It is a bottom view of the connection between the upper bracket of the meter head, the lower bracket of the meter head and the local structure of the first stable connecting member of the present invention; Figure 8 It is a schematic diagram of the connection structure between the upper bracket of the meter head, the lower bracket of the meter head and the first stable connecting piece of the present invention; Fig. 9 It is a top view of the local structural connection between the upper bracket of the meter head, the lower bracket of the meter head and the second stable connecting member of the present invention; Fig.10 For the present invention Fig. 9 A magnified schematic diagram of the structural connection at B in the middle; Fig.11 It is a bottom view of the connection between the upper bracket of the meter head, the lower bracket of the meter head and the local structure of the second stable connecting member of the present invention; Fig.12 This is a schematic diagram of the connection of the plug-in block structure of the present invention; Fig.13 For the present invention Fig.12 Enlarged schematic diagram of the structural connection at point C in the middle.

[0018] In the figure: the bracket 1 on the head, the cap 101, the auxiliary groove 102, the bracket 2 under the head, the connecting column 201, the connecting sleeve 202, the balance cross 3, the movable coil 4, the magnetic inner core 5, the inner wrapped card body 501, the magnetic outer core 6, the outer wrapped card body 601, the magnet 7, the circular through hole 801, the connecting thread cavity 802, the limit card slot 803, the fixing screw 804, the auxiliary screw head 805, the rubber pad 806, the limit Positioning block 807, positioning slot 808, cylindrical slot 809, concave stabilizing strip 810, square through hole 901, first side slot 902, docking slot body 903, second side slot 904, fastening card plate 905, locking slot 906, handle 907, docking block 908, connecting slot 909, locking strip 910, auxiliary pull head 911, connecting spring 912, auxiliary ramp 913, and limiting disk 914. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-Figure 13 A high-stability pointer-type mechanical instrument head includes a head upper bracket 1, a head lower bracket 2, a balance cross 3, a movable coil 4, a magnetic inner core 5, a magnetic outer core 6 and a magnet 7; a cap 101 is arranged at the bottom end of the head bracket 1, and an auxiliary groove 102 is arranged at the top end of the cap 101; a connecting column 201 is arranged in the head lower bracket 2, and a connecting sleeve 202 is fixedly arranged at the top of the connecting column 201; wherein the connecting sleeve 202 and the cap 101 are arranged at corresponding positions and have the same number of groups, and the two are adapted to be plugged in.

[0021] Here, the upper bracket 1 of the meter head and the lower bracket 2 of the meter head are connected to form a support frame, and the support frame is provided with a balance cross 3, a movable coil 4, a magnetic inner iron core 5, a magnetic outer iron core 6 and a magnet 7; wherein the bracket 1 of the meter head and the lower bracket 2 of the meter head are connected by a stable connecting piece, and the stable connecting piece.

[0022] The magnetic outer core 6 is arranged in the lower bracket 2 of the meter head, the magnetic inner core 5 is arranged in the lower bracket 2 of the meter head, and the magnetic outer core 6 is sleeved on the outside of the magnetic inner core 5, and the magnetic outer core 6 and the magnetic inner core 5 form a magnetic core; a movable coil 4 is arranged on the magnetic core, and the movable coil 4 is connected to the balance cross 3; a cylindrical through groove is penetrated at the center position of the magnetic inner core 5 here, and an opening is arranged on one side of the cylindrical through groove; inner wrapped card bodies 501 are symmetrically arranged on both sides of the opening; the magnetic outer core 6 here is arranged in a C shape, and outer wrapped card bodies 601 are symmetrically arranged at both ends of the magnetic outer core 6; the outer wrapped card body 601 and the inner wrapped card body 501 form a wrapped cavity, and a magnet 7 is arranged in the wrapped cavity, and two magnets 7 are arranged.

[0023] The magnet 7 is placed in the wrapping cavity formed by the magnetic inner core 5 and the magnetic outer core 6, and then installed on the lower bracket 2 of the meter head. Then the movable coil 4 and the balance cross 3 are installed. Finally, the upper bracket 1 of the meter head and the lower bracket 2 of the meter head are firmly connected through a stable connector; the magnetic inner core 5 and the magnetic outer core 6 are tightly fixed by the bracket 1 of the meter head and the lower bracket 2 of the meter head to make the structure more stable; the same polarity surfaces (repulsive surfaces) of the two magnets 7 are relatively installed in the wrapping cavity formed by the magnetic inner core 5 and the magnetic outer core 6, so that a uniformly distributed magnetic field is generated in the middle of the magnetic core. After the movable coil 4 is energized, the coil will also generate a magnetic field of corresponding size according to the current size. Driven by electromagnetic induction, the movable coil 4 swings evenly, driving the instrument pointer to swing to the corresponding scale.

[0024] Example 2: Based on Example 1, please refer to Figure 5-Figure 8 The stable connection member includes a first stable connection member, which includes a circular through hole 801, a connecting thread cavity 802, a limiting card slot 803, a fixing screw 804, an auxiliary screw head 805, a rubber pad 806, a limiting card block 807, a positioning card slot 808, a cylindrical slot 809 and a concave fixing strip 810; the circular through hole 801 is arranged at the bottom end of the auxiliary groove 102 and passes through the sleeve cap 101, the connecting thread cavity 802 is arranged at the top of the connecting sleeve head 202, the limiting card slot 803 is symmetrically arranged in the auxiliary groove 102, and the rubber pad 80 6 is placed in the auxiliary groove 102, and the fixing screw 804 passes through the circular through hole 801 and is threadedly connected with the connecting threaded cavity 802; here, a limit block 807 is symmetrically fixedly arranged at the bottom end of the rubber pad 806, and the limit block 807 and the limit groove 803 are adapted to be clamped; the top surface of the rubber pad 806 is equidistantly provided with positioning grooves 808; here, an auxiliary screw head 805 is fixedly arranged at one end of the fixing screw 804, and a cylindrical slot 809 is symmetrically arranged in the auxiliary screw head 805, and both ends of the concave fixing strip 810 are inserted into the cylindrical slot 809.

[0025] In this embodiment, the first stabilizing connector is provided to stabilize the connection between the upper bracket 1 and the lower bracket 2 of the meter head, that is, in the process of connecting and fixing the upper bracket 1 and the lower bracket 2 of the meter head by the stabilizing screw 804, the rubber pad 806 is first placed in the auxiliary groove 102, and the limiting block 807 at the bottom end of the rubber pad 806 is stuck in the limiting groove 803, and then the stabilizing screw 804 is passed through the rubber pad 806 and threadedly connected with the connecting threaded cavity 802. After tightening the stabilizing screw 804, the two ends of the concave stabilizing strip 810 are inserted into the cylindrical slot 809 of the auxiliary screw head 805 until the end of the concave stabilizing strip 810 is stuck in the positioning groove 808 at the corresponding position of the rubber pad 806, providing a locking effect on the stabilizing screw 804, thereby improving the assembly stability of the bracket 1 and the lower bracket 2 of the meter head, which has a positive effect on improving the working stability of the mechanical instrument head.

[0026] Example 3: Based on Example 2, please refer to Figure 9-13 , the stable connection member here also includes a second stable connection member, which includes a square through hole 901, a first side slot 902, a docking slot body 903, a second side slot 904, a fastening card plate 905, a locking slot 906, a handle 907, a docking plug block 908, a connecting slot 909, a locking card strip 910, an auxiliary pull head 911, a connecting spring 912, an auxiliary slope 913 and a limit plate 914; the square through hole 901 is arranged at the bottom end of the auxiliary groove 102, the first side slot 902 is arranged at the side position of the sleeve cap 101, the docking slot body 903 is arranged at the top end of the connecting sleeve head 202, the second side slot 904 is arranged at the side position of the connecting sleeve head 202, and the second side slot 904 is connected to the docking slot body 903, and one end of the fastening card plate 905 is fixedly provided with a handle 907 , a locking slot 906 is provided on the side position of the other end of the fastening card plate 905, and the docking block 908 passes through the square through hole 901 and is inserted into the docking slot body 903; here, a limiting disk member 914 is fixedly provided at one end of the docking block 908, and a connecting slot 909 is provided on the side position of the other end of the docking block 908, a locking card strip 910 is movably inserted in the docking block 908, one end of the locking card strip 910 extends into the connecting slot 909, and an auxiliary slope 913 is provided on one side of the end, the other end of the locking card strip 910 extends to the outside of the limiting disk member 914, and an auxiliary pull head 911 is fixedly provided at the end of the locking card strip 910, and a connecting spring 912 is fixedly provided at the end connected to the locking card strip 910, and the other end of the connecting spring 912 is fixedly provided on the limiting disk member 914.

[0027] In this embodiment, the upper bracket 1 of the meter head and the lower bracket 2 of the meter head are firmly connected by a second stable connecting member, which replaces the connection of ordinary screws. On the basis of improving the stability of the connection, corresponding auxiliary tools do not need to be used for tightening; that is, after the sleeve cap 101 is put on the connecting sleeve 202, the docking block 908 is then passed through the square through hole 901 and then inserted into the docking slot body 903. At the same time, the fastening card plate 905 is passed through the second side slot 904 and the first side slot 902 in turn, so that one end of the fastening card plate 905 enters the connecting slot 909 on the side of the docking block 908, and the end of the fastening card plate 905 squeezes the auxiliary slope 913 at the bottom end of the locking strip 910, so that the bottom end of the locking strip 910 is stuck in the locking slot 906 on the fastening card plate 905, so that the docking block 908 is locked, thereby realizing a firm connection between the bracket 1 on the meter head and the lower bracket 2 of the meter head.

[0028] When disassembly is required later, first pull the locking strip 910 upwards through the handle 907 to separate one end of the locking strip 910 from the locking slot 906, and then pull out the fastening plate 905 to quickly release the connection between the upper bracket 1 and the lower bracket 2 of the header; by setting a second stable connecting piece, it is very convenient to install and disassemble on the basis of excellent connection stability.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-stability pointer-type mechanical instrument head, characterized in that: It comprises a meter head upper bracket (1), a meter head lower bracket (2), a balance cross (3), a movable coil (4), a magnetic inner iron core (5), a magnetic outer iron core (6) and a magnet (7); A cap (101) is provided at the bottom end of the bracket (1) on the meter head, and an auxiliary groove (102) is provided at the top end of the cap (101); A connecting column (201) is provided in the meter head lower bracket (2), and a connecting sleeve (202) is fixedly provided on the top end of the connecting column (201); The upper bracket (1) of the meter head and the lower bracket (2) of the meter head are connected to form a support frame, and a balancing cross (3), a movable coil (4), a magnetic inner iron core (5), a magnetic outer iron core (6) and a magnet (7) are arranged in the support frame; The meter header upper bracket (1) and the meter header lower bracket (2) are connected via a stable connecting piece, and the stable connecting piece.

2. A high stability pointer type mechanical instrument head according to claim 1, characterized in that: The magnetic outer core (6) is arranged in the lower bracket (2) of the meter head, the magnetic inner core (5) is arranged in the lower bracket (2) of the meter head, and the magnetic outer core (6) is sleeved on the outer side of the magnetic inner core (5), and the magnetic outer core (6) and the magnetic inner core (5) together form a magnetic core; a movable coil (4) is arranged on the magnetic core, and the movable coil (4) is connected to the balance cross (3).

3. The high stability pointer type mechanical instrument head according to claim 1, characterized in that: A cylindrical through slot is provided through the center of the magnetic inner iron core (5), and an opening is provided on one side of the cylindrical through slot; inner wrapped card bodies (501) are symmetrically provided on both sides of the opening.

4. The high stability pointer type mechanical instrument head according to claim 1, characterized in that: The magnetic outer core (6) is configured to be C-shaped, and outer wrapping card bodies (601) are symmetrically arranged at both ends of the magnetic outer core (6); the outer wrapping card body (601) and the inner wrapping card body (501) form an wrapping cavity, and a magnet (7) is arranged in the wrapping cavity, and two magnets (7) are arranged.

5. The high stability pointer type mechanical instrument head according to claim 1, characterized in that: The stabilizing connector comprises a first stabilizing connector, which comprises a circular through hole (801), a connecting threaded cavity (802), a limiting slot (803), a stabilizing screw (804), an auxiliary screw head (805), a rubber pad (806), a limiting block (807), a positioning slot (808), a columnar slot (809) and a concave stabilizing strip (810); the circular through hole (801) is arranged at the bottom end of the auxiliary groove (102) and passes through the sleeve cap (101); the connecting threaded cavity (802) is arranged at the top end of the connecting sleeve head (202); the limiting slot (803) is symmetrically arranged in the auxiliary groove (102); the rubber pad (806) is placed in the auxiliary groove (102); and the stabilizing screw (804) passes through the circular through hole (801) and is threadedly connected to the connecting threaded cavity (802).

6. A high-stability pointer-type mechanical instrument head according to claim 5, characterized in that: A limit block (807) is symmetrically fixedly disposed at the bottom end of the rubber pad body (806), and the limit block (807) and the limit slot (803) are adapted to be engaged; and positioning slots (808) are equidistantly disposed on the top surface of the rubber pad body (806).

7. The high stability pointer type mechanical instrument head according to claim 5, characterized in that: An auxiliary screw head (805) is fixedly provided at one end of the stabilizing screw (804), and a columnar slot (809) is symmetrically provided in the auxiliary screw head (805), and both ends of the concave stabilizing strip (810) are inserted into the columnar slot (809).

8. The high stability pointer type mechanical instrument head according to claim 1, characterized in that: The stable connection member also includes a second stable connection member, which includes a square through hole (901), a first side slot (902), a docking slot body (903), a second side slot (904), a fastening card plate (905), a locking slot (906), a handle (907), a docking plug block (908), a connecting notch (909), a locking card strip (910), an auxiliary pull head (911), a connecting spring (912), an auxiliary slope (913) and a limit plate (914); the square through hole (901) is arranged at the bottom end of the auxiliary groove (102), and the first side The slot (902) is arranged at the side position of the sleeve cap (101), the docking slot body (903) is arranged at the top end of the connecting sleeve (202), the second side slot (904) is arranged at the side position of the connecting sleeve (202), and the second side slot (904) is connected to the docking slot body (903), one end of the fastening card plate (905) is fixedly provided with a handle (907), and the side position of the other end of the fastening card plate (905) is provided with a locking card slot (906), and the docking plug block (908) passes through the square through hole (901) and is inserted into the docking slot body (903).

9. A high-stability pointer-type mechanical instrument head according to claim 8, characterized in that: A limit plate (914) is fixedly provided at one end of the docking plug block (908), and a connecting slot (909) is provided at the side position of the other end of the docking plug block (908); the locking clip (910) is movably plugged into the docking plug block (908); one end of the locking clip (910) extends into the connecting slot (909), and an auxiliary slope (913) is provided on one side of the end; the other end of the locking clip (910) extends to the outside of the limit plate (914), and an auxiliary pull head (911) is fixedly provided at the end of the locking clip (910); a connecting spring (912) is fixedly provided at the end of the auxiliary pull head (911) connected to the locking clip (910), and the other end of the connecting spring (912) is fixedly provided on the limit plate (914).

10. A method for installing a high-stability pointer-type mechanical instrument head according to any one of claims 1 to 9, characterized in that: The installation method is: The magnet (7) is placed in a wrapping cavity formed by the magnetic inner core (5) and the magnetic outer core (6), and then installed on the lower bracket (2) of the meter head. Then, the movable coil (4) and the balance cross (3) are installed. Finally, the upper bracket (1) of the meter head and the lower bracket (2) of the meter head are firmly connected by a stabilizing connector.

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