Positioning jig

Abstract

The utility model relates to the technical field of low-voltage electric appliance assembling equipment, and discloses a positioning jig. The positioning jig comprises a base assembly and a pressing head, the base assembly comprises a positioning supporting piece, a limiting groove is formed in the base assembly, and the limiting groove can position a terminal; the pressing head is movably connected with the base assembly, the pressing head can be far away from the positioning supporting piece so that the melt can be installed between the pressing head and the positioning supporting piece, and the pressing head can be close to the positioning supporting piece so that the melt can abut against the positioning supporting piece, and the end of the melt abuts against the terminal. When the terminal and the melt are assembled, the positioning jig can reliably support the melt, so that the melt is prevented from being deformed and damaged, and the subsequent reliable welding of the terminal and the melt is also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliance assembly equipment, in particular to a positioning fixture. Background Art

[0002] A fuse is an electrical device that disconnects the circuit by melting its own fuse when the current exceeds a specified value. Usually, a fuse includes a barrel, terminals, and a plurality of fuses, wherein terminals are respectively provided at both ends of the barrel, and both ends of each fuse are respectively welded to two terminals.

[0003] In the process of assembling the fuse, it is first necessary to weld one end of each fuse to the same terminal before proceeding to the subsequent assembly steps. When welding the terminal and the fuse, both need to be accurately positioned. The positioning structure in the prior art only fixes the connection between the fuse and the terminal. However, the material of the fuse is relatively soft, and the end of the fuse away from the terminal is easily deformed during the positioning process and the subsequent welding process, which may not only cause damage to the fuse, but also affect the reliability of its welding with the terminal. Utility Model Content

[0004] The utility model aims to provide a positioning jig, which can reliably support the melt when assembling the terminal and the melt, avoid deformation and damage of the melt, and ensure reliable welding of the subsequent terminal and the melt.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Positioning fixture, used to position the terminals and fuse element of the fuse, the positioning fixture includes:

[0007] A base assembly, including a positioning support, wherein a limiting groove is provided on the base assembly, and the limiting groove can position the terminal;

[0008] A pressure head is movably connected to the base assembly. The pressure head can be moved away from the positioning support so that the melt can be loaded between the pressure head and the positioning support. The pressure head can also be close to the positioning support so that the melt is pressed against the positioning support and the end thereof is pressed against the terminal.

[0009] As an optional solution, the positioning fixture further includes a first elastic member, which is disposed between the pressing head and the base assembly, and the first elastic member is configured to bring the pressing head close to the positioning support member.

[0010] As an optional solution, the surface of the positioning support member facing the pressure head is provided with a first positioning surface, and the concavo-convex shape of the first positioning surface is the same as the concavo-convex shape of the melt surface; and / or

[0011] A second positioning surface is provided on one side of the pressure head facing the positioning support member, and the concavo-convex shape of the second positioning surface is the same as the concavo-convex shape of the melt surface.

[0012] As an optional solution, the positioning fixture includes two pressing heads, and the two pressing heads are located on both sides of the positioning support member. The base assembly also includes a base and a limiting portion. The positioning support member and the limiting portion are both arranged on the base and arranged along a first direction, and the limiting groove is arranged on the limiting portion.

[0013] As an optional solution, the limiting portion includes two movable parts, which are arranged opposite to each other and surround two side walls of the limiting groove. At least one of the movable parts is movably connected to the base and can approach or move away from the other movable part.

[0014] As an optional solution, the base assembly further includes a second elastic member, which is disposed between the base and the movable member, and the second elastic member is configured to make the corresponding movable member approach another movable member.

[0015] As an optional solution, the limiting portion further includes:

[0016] a fixing member connected to the base and located at an end of the movable member away from the positioning support member, the fixing member being configured to abut against the terminal along a first direction; and / or

[0017] A support stopper is connected to the base, and the support stopper is at least partially disposed between the two movable parts. The support stopper is configured to support the terminal and / or stop the movable part.

[0018] As an optional solution, the limiting groove is arranged on the top surface of the positioning support member, and the positioning fixture includes at least two pressing heads, and at least two of the pressing heads are arranged along the circumference of the positioning support member.

[0019] As an optional solution, the positioning fixture also includes a guide member, each of the pressure heads is correspondingly connected to one of the guide members, and the guide member is slidably matched with the base assembly.

[0020] As an optional solution, the base assembly further includes a mounting member, the mounting member is connected to the positioning support member, and the guide member passes through the mounting member to slide with the mounting member;

[0021] The positioning fixture further includes a limiting member, which is arranged on a side of the mounting member away from the positioning support member and connected to the guide member.

[0022] The beneficial effects of the utility model are:

[0023] The positioning fixture of the utility model, when assembling the terminal and the melt, installs the terminal in the limit groove, drives the pressure head away from the positioning support and places the melt between the pressure head and the positioning support, then the pressure head approaches the positioning support and presses the melt against the positioning support, at which time the melt and the terminal are in contact. The positioning fixture of the utility model not only ensures that the terminal and the melt are in contact with each other, but also achieves reliable support for the melt as a whole through the pressure head and the positioning support, thereby avoiding deformation and damage of the melt, and also avoiding the deformation of the melt affecting the subsequent welding of the terminal and the melt. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the matching state of the terminals and the fuse element of the first type of fuse;

[0025] Figure 2 It is a structural schematic diagram of a positioning fixture provided in Embodiment 1 of the present utility model;

[0026] Figure 3 The first type of fuse has terminals and fuse body installed on Figure 2 A schematic diagram of the structure of the positioning fixture shown;

[0027] Figure 4 yes Figure 2 The schematic diagram of the structure in which a pressure head and a moving part are hidden;

[0028] Figure 5 This is a schematic diagram of the matching state of the terminals and the fuse element of the second type of fuse;

[0029] Figure 6 It is a structural schematic diagram of a positioning fixture provided in Embodiment 2 of the present utility model;

[0030] Figure 7 The second type of fuse has terminals and fuse body installed on Figure 5 A schematic diagram of the structure of the positioning fixture shown;

[0031] Figure 8 This is a schematic diagram of a positioning fixture provided in Embodiment 2 of the present utility model after a mounting piece is hidden.

[0032] In the figure:

[0033] 02, terminal; 021, main body; 022, mating part; 04, melt;

[0034] 10. Base assembly; 11. Base; 111. First matching groove; 112. Second matching groove; 12. Positioning support member; 121. First positioning surface; 120. Positioning groove; 13. Limiting portion; 131. Movable member; 132. Fixed member; 133. Support stop member; 14. Limiting groove; 15. Second elastic member; 16. Mounting member;

[0035] 20. pressure head; 21. second positioning surface;

[0036] 30. a first elastic member;

[0037] 40. Guide member;

[0038] 50. Limiting parts;

[0039] 61. First slide rail assembly; 62. Second slide rail assembly;

[0040] 71. First connecting member; 72. Second connecting member. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] Embodiment 1

[0046] This embodiment provides a positioning fixture, which can be used to assemble the terminal and fuse of the first type of fuse.

[0047] like Figure 1 As shown, the terminal 02 of the first type of fuse is connected to two fuses 04 , wherein the terminal 02 is roughly a sheet-like structure, and the fuse 04 is also roughly a sheet-like structure. The two fuses 04 are respectively arranged on both sides of the terminal 02 , and one end of each fuse 04 is against the terminal 02 .

[0048] like Figure 2 and Figure 3 As shown, the positioning fixture includes a base assembly 10 and a pressure head 20. The base assembly 10 includes a base 11 and a positioning support 12. The positioning support 12 is installed on the base 11. A limiting groove 14 is provided on the base assembly 10. The limiting groove 14 can position the terminal 02. The pressure head 20 is movably connected with the base assembly 10. The pressure head 20 can be away from the positioning support 12 so that the melt 04 can be loaded between the pressure head 20 and the positioning support 12. The pressure head 20 can also be close to the positioning support 12 so that the melt 04 is pressed against the positioning support 12 and the end is against the terminal 02. Specifically, when assembling the terminal 02 and the melt 04, the terminal 02 is first installed in the limiting groove 14, then the pressure head 20 is driven away from the positioning support 12 and the melt 04 is placed between the pressure head 20 and the positioning support 12, and then the pressure head 20 is driven close to the positioning support 12 and the melt 04 is pressed against the positioning support 12. At this time, the melt 04 is in contact with the terminal 02.

[0049] The positioning fixture of this embodiment not only ensures that the terminal 02 and the melt 04 are in abutment with each other, but also realizes reliable support for the melt 04 as a whole through the cooperation between the pressure head 20 and the positioning support 12, thereby avoiding deformation and damage of the melt 04 and also avoiding the deformation of the melt 04 from affecting the subsequent welding of the terminal 02 and the melt 04.

[0050] In some cases, the terminal 02 of the fuse is only connected to one fuse element 04 , and in this case, the positioning fixture may only be provided with one pressing head 20 .

[0051] like Figure 2As shown, in this embodiment, the terminal 02 of the fuse is connected to two fuses 04, so the positioning fixture includes two pressing heads 20, and the two pressing heads 20 are respectively located on both sides of the positioning support 12, and each pressing head 20 corresponds to pressing one fuse 04. The base assembly 10 also includes a limiting portion 13, and the limiting portion 13 is arranged on the base 11. The limiting portion 13 and the positioning support 12 are arranged at intervals along the first direction, and the limiting groove 14 is arranged on the limiting portion 13.

[0052] like Figure 2 and Figure 3 As shown, the surfaces of the positioning support 12 facing the two pressing heads 20 are first positioning surfaces 121, and each first positioning surface 121 corresponds to a pressing head 20 to clamp the melt 04. The concavo-convex shape of the first positioning surface 121 is the same as the concavo-convex shape of the surface of the melt 04. The second positioning surface 21 is provided on the side of the pressing head 20 facing the positioning support 12, and the concavo-convex shape of the second positioning surface 21 is the same as the concavo-convex shape of the surface of the melt 04. By setting the first positioning surface 121 and the second positioning surface 21 to have the same concavo-convex shape as the surface corresponding to the melt 04, a clamping space having the same shape as the melt 04 is formed between the positioning support 12 and the pressing head 20, which can not only accurately position the melt 04 and ensure that the melt 04 can be accurately pressed against the terminal 02, but also fully support the melt 04 to prevent the melt 04 from deforming during the assembly process.

[0053] like Figure 2 and Figure 3 As shown, the positioning fixture further includes a first connecting member 71, a first end of the first connecting member 71 is connected to the pressure head 20, and a second end of the first connecting member 71 extends to the outside of the base assembly 10 after passing through the base 11, so as to cooperate with an external driving source, and the external driving source can drive the pressure head 20 away from or close to the positioning support member 12 by driving the first connecting member 71. Of course, in some embodiments, the pressure head 20 can also be manually operated to move closer to or away from the positioning support member 12. In this embodiment, the first connecting member 71 may not be required.

[0054] like Figure 4 As shown, the positioning jig also includes a first slide rail assembly 61, and each ram 20 is correspondingly configured with a first slide rail assembly 61. Specifically, the first slide rail assembly 61 includes a first slide rail and a first slider, the first slide rail extends along the second direction and is installed on the base 11, and the first slider is connected to the ram 20 and slides with the first slide rail. By setting the first slide rail assembly 61, not only the movement accuracy of the ram 20 is guaranteed, so that the melt 04 is accurately pressed against the positioning support 12; it also reduces the friction between the ram 20 and the base assembly 10, thereby improving the service life of the positioning jig.

[0055] like Figure 2 and Figure 3As shown, the positioning fixture further includes a first elastic member 30, which is disposed between the pressure head 20 and the base assembly 10, and the first elastic member 30 is configured to make the pressure head 20 close to the positioning support 12. The provision of the first elastic member 30 can not only enable the pressure head 20 to automatically reset to a position close to the pressure head 20, but also can apply a certain pressure to the melt 04 to ensure that the melt 04 is reliably pressed against the positioning support 12. Optionally, the first elastic member 30 can be a spring, a rubber column, etc. One, two, three or more first elastic members 30 can be provided between each pressure head 20 and the base assembly 10.

[0056] like Figure 2 and Figure 3 As shown, the limiting portion 13 includes two movable members 131, the two movable members 131 are arranged opposite to each other along the second direction, the two movable members 131 are arranged to form two side walls of the limiting groove 14, and at least one movable member 131 is movably connected to the base 11 and can approach or move away from the other movable member 131. When the terminal 02 is placed in the limiting groove 14, the movable members 131 can be driven away from each other first, and after the melt 04 is placed in the two movable members 131, the two movable members 131 are driven to approach each other to clamp the terminal 02. In other words, by setting the movable member 131 to be movably connected to the base 11, the terminal 02 can be easily loaded into the limiting groove 14. In this embodiment, both movable members 131 can move relative to the base 11 along the second direction. In some embodiments, only one of the movable members 131 can be set to be able to move relative to the base 11.

[0057] like Figure 4 As shown, the positioning fixture also includes a second slide rail assembly 62, and each movable part 131 is correspondingly configured with a second slide rail assembly 62. Specifically, the second slide rail assembly 62 includes a second slide rail and a second slider, the second slide rail extends along the second direction and is installed on the base 11, and the second slider is connected to the movable part 131 and slides with the second slide rail. By setting the second slide rail assembly 62, not only the movement accuracy of the movable part 131 is guaranteed to accurately clamp the positioning terminal 02; it also reduces the friction between the movable part 131 and the base 11, thereby increasing the service life of the positioning fixture.

[0058] like Figure 2 and Figure 3As shown, the positioning fixture also includes a second connecting member 72, a first end of the second connecting member 72 is connected to the movable member 131, and a second end passes through the base 11 and extends to the outside of the base assembly 10, so as to cooperate with an external driving source. The external driving source can drive the second connecting member 72 to drive the movable member 131 to move along the second direction. Of course, in some embodiments, the movable member 131 can also be moved by manual operation. In this embodiment, the second connection may not be required. In some embodiments, the first connecting member 71 and the second connecting member 72 located on the same side of the terminal 02 can be connected to each other, so the same external driving source can simultaneously drive the first connecting member 71 and the second connecting member 72 to move, that is, simultaneously drive the movable member 131 and the pressure head 20 to move, thereby reducing the cost of the external driving structure.

[0059] like Figure 2 As shown, the base assembly 10 also includes a second elastic member 15, which is arranged between the base 11 and the movable member 131, and the second elastic member 15 is configured to make the corresponding movable member 131 close to another movable member 131. The arrangement of the second elastic member 15 can not only enable the movable member 131 to automatically reset to and press against the terminal 02, but also apply a certain pressure to the terminal 02 to ensure the stability of the position of the terminal 02. Optionally, the second elastic member 15 can be a spring, a rubber column, etc. One, two, three or more second elastic members 15 can be arranged between each movable member 131 and the base 11.

[0060] like Figure 2 and Figure 3 As shown, the limiting portion 13 also includes a support stopper 133, which is connected to the base 11. The support stopper 133 is at least partially disposed between the two movable members 131. The support stopper 133 can stop the two movable members 131 along the second direction to ensure that the interval between the two movable members 131 just matches the thickness of the terminal 02, thereby accurately positioning the terminal 02. In this embodiment, the support stopper 133 is disposed at the lower end of the two movable members 131. At this time, the support stopper 133 is also used to support the terminal 02, ensuring that the height of the terminal 02 is appropriate, thereby more accurately matching with the melt 04. Optionally, the support stopper 133 can be connected to the base 11 by welding, fastener connection, etc., which is not specifically limited here.

[0061] like Figure 2 and Figure 3As shown, the limiting portion 13 also includes a fixing member 132, which is connected to the base 11 and is located at one end of the movable member 131 away from the positioning support member 12 along the first direction. The fixing member 132 is configured to abut against the terminal 02 along the first direction, thereby positioning the position of the terminal 02 along the first direction, and further ensuring that the terminal 02 is accurately matched with the melt 04. In this embodiment, the limiting portion 13 extends between the two movable members 131 along the first direction. At this time, the limiting portion 13, the support stopper 133 and the two movable members 131 are jointly arranged to form a complete limiting groove 14. Optionally, the limiting portion 13 can be directly connected to the base 11, or indirectly connected to the base 11 through other connecting members, which is not specifically limited here.

[0062] like Figure 3 As shown, in this embodiment, a first matching groove 111 is provided on the base 11, and the first matching groove 111 is used to match with an external clamping structure. The external clamping structure can extend into the first matching groove 111 to facilitate positioning when clamping the positioning assembly fixture.

[0063] Embodiment 2

[0064] This embodiment provides a positioning jig, which can realize the assembly of the terminal and the fuse of the second type of fuse.

[0065] like Figure 5 As shown, the terminal 02 of the second type of fuse is connected to four fuses 04, wherein the terminal 02 includes a main body 021 and a mating portion 022, the plane where the mating portion 022 is located is perpendicular to the plane where the main body 021 is located, and the four fuses 04 are circumferentially arranged around the outer periphery of the mating portion 022, and one end of each fuse 04 is against the circumferential surface of the mating portion 022.

[0066] like Figure 6 and Figure 7 As shown, the positioning fixture includes a base assembly 10 and a press head 20, wherein the base assembly 10 includes a base 11 and a positioning support 12, and the positioning support 12 is installed on the base 11. A limiting groove 14 is provided on the base assembly 10, and the limiting groove 14 can position the terminal 02. The press head 20 is movably connected with the base assembly 10, and the press head 20 can be away from the positioning support 12 so that the melt 04 can be loaded between the press head 20 and the positioning support 12. The press head 20 can also approach the positioning support 12 so that the melt 04 is pressed against the positioning support 12 and the end thereof is against the terminal 02. Specifically, when assembling the terminal 02 and the melt 04, the press head 20 can be driven away from the positioning support 12 first, and after the melt 04 is loaded between the press head 20 and the positioning support 12, the press head 20 approaches the positioning support 12 and presses the melt 04 against the positioning support 12, and finally the terminal 02 is installed in the limiting groove 14 and against the melt 04.

[0067] The positioning fixture of this embodiment not only ensures that the terminal 02 and the melt 04 are in abutment with each other, but also realizes reliable support for the melt 04 as a whole through the cooperation between the pressure head 20 and the positioning support 12, thereby avoiding deformation and damage of the melt 04 and also avoiding the deformation of the melt 04 from affecting the subsequent welding of the terminal 02 and the melt 04.

[0068] In this embodiment, Figure 6 As shown, the positioning support 12 extends substantially vertically, and the limiting groove 14 is provided on the top surface of the positioning support 12. The positioning jig includes four pressing heads 20, which are arranged along the circumference of the positioning support 12, and each pressing head 20 is used to press a melt 04 against the positioning support 12. It can be understood that the number of the specific pressing heads 20 can match the number of the melts 04.

[0069] like Figure 6 and Figure 7 As shown, four positioning grooves 120 are provided on the circumferential surface of the positioning support 12, and each positioning groove 120 is used to position a melt 04. By providing the positioning grooves 120, the melt 04 can be positioned more accurately to ensure the matching accuracy between the melt 04 and the terminal 02. In this embodiment, the pressure head 20 can extend into the positioning groove 120 to press the melt 04 against the first positioning surface 121.

[0070] like Figure 6 and Figure 7 As shown, the surface of the positioning support 12 facing the pressure head 20 is the first positioning surface 121, each first positioning surface 121 corresponds to a pressure head 20 to clamp the melt 04, the concavo-convex shape of the first positioning surface 121 is the same as the concavo-convex shape of the surface of the melt 04, and the pressure head 20 is provided with a second positioning surface 21 on the side facing the positioning support 12, and the concavo-convex shape of the second positioning surface 21 is the same as the concavo-convex shape of the surface of the melt 04. By setting the first positioning surface 121 and the second positioning surface 21 to have the same concavo-convex shape as the surface corresponding to the melt 04, a clamping space with the same shape as the melt 04 is formed between the positioning support 12 and the pressure head 20, so that the melt 04 can be accurately and comprehensively supported to prevent the melt 04 from being deformed during the assembly process. In this embodiment, the first positioning surface 121 is the bottom surface of the positioning groove 120.

[0071] like Figure 6 and Figure 8 As shown, the positioning fixture further includes a guide member 40, each pressing head 20 is connected to a corresponding guide member 40, and the guide member 40 is slidably matched with the base assembly 10. By providing the guide member 40, the movement accuracy of the pressing head 20 can be ensured, and the concavo-convex structure of the pressing head 20 can be aligned with the concavo-convex structure of the melt 04, so as to prevent the pressing block from crushing the melt 04.

[0072] like Figure 6 and Figure 8As shown, the base assembly 10 further includes a mounting member 16, which is connected to the positioning support member 12, and the guide member 40 passes through the mounting member 16 to slide with the mounting member 16. In this embodiment, four mounting members 16 are provided, each mounting member 16 is installed on the outside of a positioning groove 120, one end of the positioning member extends into the positioning groove 120 and is connected to the pressure head 20, and the other end is passed through the side of the mounting member 16 away from the corresponding positioning groove 120. The installation of the guide member 40 is facilitated by providing the mounting member 16.

[0073] like Figure 6 As shown, the positioning fixture further includes a limiter 50, which is arranged on the side of the mounting member 16 away from the positioning support member 12 and connected to the guide member 40. On the one hand, the limiter 50 and the mounting member 16 can limit the movement stroke of the ram 20 to prevent the ram 20 from applying too much pressure to the melt 04 and causing damage to the melt 04; on the other hand, the limiter 50 can be used to cooperate with an external driving source, and the external driving source drives the limiter 50 to move, thereby driving the ram 20 to move closer to or away from the positioning support member 12.

[0074] like Figure 6 and Figure 8 As shown, the positioning fixture also includes a first elastic member 30, which is disposed between the pressure head 20 and the base assembly 10, and the first elastic member 30 is configured to make the pressure head 20 close to the positioning support 12. In this embodiment, the first elastic member 30 is pressed between the pressure head 20 and the mounting member 16. The provision of the first elastic member 30 can not only enable the pressure head 20 to automatically reset to a position close to the pressure head 20, but also can apply a certain pressure to the melt 04 to ensure that the melt 04 is reliably pressed against the positioning support 12. Optionally, the first elastic member 30 can be a spring, a rubber column, etc. One, two, three or more first elastic members 30 can be provided between each pressure head 20 and the base assembly 10.

[0075] like Figure 6 As shown, in this embodiment, a second matching groove 112 is provided on the base 11 , and the second matching groove 112 is used to match with an external clamping structure. The external clamping structure clamps the entire positioning assembly fixture by clamping in the second matching groove 112 .

[0076] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A positioning fixture, characterized in that: Used to locate the terminal and fuse of the fuse, the positioning fixture includes: A base assembly (10) comprises a positioning support (12), wherein a limiting groove (14) is provided on the base assembly (10), and the limiting groove (14) is capable of positioning a terminal; A pressure head (20), wherein the pressure head (20) is movably connected to the base assembly (10), and the pressure head (20) can be moved away from the positioning support (12) so that the melt can be loaded between the pressure head (20) and the positioning support (12), and the pressure head (20) can also be moved close to the positioning support (12) so that the melt is pressed against the positioning support (12) and the end thereof is pressed against the terminal.

2. The positioning fixture according to claim 1, characterized in that: The positioning fixture further comprises a first elastic member (30), wherein the first elastic member (30) is disposed between the pressing head (20) and the base assembly (10), and the first elastic member (30) is configured to bring the pressing head (20) close to the positioning support member (12).

3. The positioning fixture according to claim 1, characterized in that: The surface of the positioning support (12) facing the pressure head (20) is provided with a first positioning surface (121), and the concavo-convex shape of the first positioning surface (121) is the same as the concavo-convex shape of the melt surface; and / or A second positioning surface (21) is provided on one side of the pressure head (20) facing the positioning support member (12), and the concavo-convex shape of the second positioning surface (21) is the same as the concavo-convex shape of the melt surface.

4. The positioning fixture according to any one of claims 1 to 3, characterized in that: The positioning fixture comprises two pressing heads (20), and the two pressing heads (20) are located on both sides of the positioning support (12). The base assembly (10) further comprises a base (11) and a limiting portion (13). The positioning support (12) and the limiting portion (13) are both arranged on the base (11) and arranged along a first direction, and the limiting groove (14) is arranged on the limiting portion (13).

5. The positioning fixture according to claim 4, characterized in that: The limiting portion (13) comprises two movable parts (131), the two movable parts (131) are arranged opposite to each other and surround two side walls of the limiting groove (14), at least one of the movable parts (131) is movably connected to the base (11) and can move closer to or farther away from the other movable part (131).

6. The positioning fixture according to claim 5, characterized in that: The base assembly (10) further comprises a second elastic member (15), wherein the second elastic member (15) is arranged between the base (11) and the movable member (131), and the second elastic member (15) is configured to make the corresponding movable member (131) close to another movable member (131).

7. The positioning fixture according to claim 5, characterized in that: The limiting portion (13) further comprises: a fixing member (132) connected to the base (11) and located at an end of the movable member (131) away from the positioning support member (12), the fixing member (132) being configured to abut against the terminal along a first direction; and / or A support stopper (133) is connected to the base (11), and the support stopper (133) is at least partially disposed between the two movable parts (131). The support stopper (133) is configured to support the terminal and / or to stop the movable part (131).

8. The positioning fixture according to any one of claims 1 to 3, characterized in that: The limiting groove (14) is arranged on the top surface of the positioning support (12), and the positioning fixture comprises at least two pressing heads (20), and at least two of the pressing heads (20) are arranged along the circumference of the positioning support (12).

9. The positioning fixture according to claim 8, characterized in that: The positioning jig further comprises a guide member (40), each of the pressing heads (20) is correspondingly connected to one of the guide members (40), and the guide member (40) is slidably matched with the base assembly (10).

10. The positioning fixture according to claim 9, characterized in that: The base assembly (10) further comprises a mounting member (16), wherein the mounting member (16) is connected to the positioning support member (12), and the guide member (40) passes through the mounting member (16) to be slidably matched with the mounting member (16); The positioning fixture further comprises a limiting member (50), wherein the limiting member (50) is arranged on a side of the mounting member (16) away from the positioning support member (12) and is connected to the guide member (40).

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