A concealed door handle positioning tool

Abstract

The application relates to the technical field of automobile assembly, and discloses a hidden door handle positioning tool which is used for mounting a door handle in a mounting hole of a vehicle door outer plate, the door handle comprises an assembly shell and a handle arranged in the interior of the assembly shell, the handle is arranged in the mounting hole and comprises a positioning piece and a fixing piece; the positioning piece comprises a positioning piece body and a plurality of limiting blocks arranged on the peripheral wall of the positioning piece body, the limiting blocks protrude from the positioning piece body along a first direction X of the positioning piece body and are used for abutting between the handle and the hole wall of the mounting hole; the fixing piece is used for connecting the assembly shell and the handle so as to limit the relative displacement between the assembly shell and the handle in a second direction Y and a third direction Z; thus, the rebound deviation problem during the assembly of the door handle can be solved, the assembly precision and process stability can be improved, the dependence on the mounting level of an operator is reduced, and the problem of rework and maintenance is reduced.

Description

Technical Field

[0001] This application relates to the field of automotive assembly technology, and in particular to a concealed door handle positioning fixture. Background Technology

[0002] As automotive styling evolves towards lower drag and higher integration, concealed door handles have become widely used in mid-to-high-end and new energy vehicles due to their superior aerodynamic performance and sleek, aesthetically pleasing appearance. Concealed door handles are specifically designed to pop out automatically when in use and embed themselves within the outer door panel when closed. Therefore, to prevent interference and collision between the handle and the outer door panel during automatic popping and closing, a gap must be maintained around the concealed door handle and between the handle and the outer door panel. Furthermore, to ensure minimal wind noise during driving and maintain a pleasing appearance, the gap between the handle and the outer door panel must be uniform in size and not excessively large.

[0003] To achieve consistency in this gap, during the assembly of concealed door handles, a positioning fixture is typically used to pre-adjust the gap between the door handle and the outer door panel to the target value based on the outer contour of the door handle. Then, the door handle assembly housing is fastened to the welded nuts on the outer door panel reinforcement plate with bolts.

[0004] However, since door handles are mostly made of plastic and are connected to the interior of the door handle assembly housing via a rotating shaft, assembly gaps and material elastic deformation are inevitable. Furthermore, with existing positioning fixtures only constraining the outer contour of the door handle, the door handle assembly housing, due to its own weight and the clearance between the handle and the rotating shaft, is affected by gravity during assembly. This causes a shift in the relative position between the door handle and the door handle assembly housing in both the front-to-back and vertical directions. Although the positioning fixture can maintain a consistent gap between the door handle and the outer door panel during installation, after removing the fixture, the door handle's position in the front-to-back and vertical directions will shift uncontrollably due to the release of gravity and the elastic rebound of the plastic parts. This causes the actual gap to deviate from the set value, affecting the assembly effect. The specific extent of this deviation is greatly affected by the operator's installation skill; in severe cases, the vehicle may even need to be taken off the production line and sent to the rework area for repair, significantly increasing labor costs and production cycle time. Utility Model Content

[0005] This application provides a concealed door handle positioning fixture, which can solve the problem of springback deviation during door handle assembly and improve assembly accuracy and process stability.

[0006] To achieve the above objectives, the main technical solutions adopted in this application include: In a first aspect, embodiments of this application provide a concealed door handle positioning fixture for installing a door handle into a mounting hole in the outer panel of a vehicle door. The door handle includes an assembly housing and a handle disposed inside the assembly housing. The handle is disposed within the mounting hole and includes: The positioning element includes a positioning element body and a plurality of limiting blocks disposed on the outer peripheral wall of the positioning element body. The limiting blocks protrude from the positioning element body along a first direction X and are used to abut against the wall between the handle and the mounting hole. A fastener is used to connect the assembly housing and the handle to limit the relative displacement between the assembly housing and the handle in the second direction Y and the third direction Z. Wherein, the first direction X is the left-right direction of the vehicle, the second direction Y is the front-back direction of the vehicle, and the third direction Z is the up-down direction of the vehicle.

[0007] This application proposes a concealed door handle positioning fixture. First, the relative positions of the assembly housing and the handle in the second direction (Y) and the third direction (Z) are fixed using a fixing component. Then, the handle is positioned within the mounting hole using the positioning component. After pre-adjusting the gap between the handle and the outer door panel to the target value, the assembly housing is bolted to the welded nuts on the reinforcing plate of the outer door panel. This avoids offset in the second direction (Y) and the third direction (Z) between the assembly housing and the handle during installation, thus preventing the actual gap between the handle and the outer door panel from deviating from the set value after installation. This solves the problem of springback deviation during door handle assembly, improving assembly accuracy and process stability, reducing reliance on operator skill, and minimizing rework and repair issues.

[0008] Optionally, the fastener includes a limiting pin that extends through the assembly housing along a first direction X and is inserted into the handle.

[0009] In the above solution, the relative positions of the assembly housing and the handle in the second direction Y and the third direction Z can be fixed by a limiting pin that passes through the assembly housing along the first direction X and is inserted into the handle. This solution is not only simple in structure but also convenient in operation. After installation, it can be pulled out directly along the first direction X.

[0010] Optionally, the limiting device includes an integrally formed insertion end and a handheld end, the insertion end being used to penetrate the assembly housing along a first direction X and be inserted into the handle, and the diameter d of the insertion end being smaller than the diameter D of the handheld end.

[0011] In the above solution, the limiting pin includes an integrally formed insertion end and a hand-held end, and the diameter d of the insertion end is smaller than the diameter D of the hand-held end, so that the hand-held end abuts against the side of the assembly housing away from the handle, which can realize precise control of the insertion depth of the limiting pin in the door handle and achieve a good positioning effect.

[0012] Optionally, the end of the insertion end is provided with a rounded chamfer.

[0013] In the above solution, by setting a rounded chamfer at the end of the insertion end, a good guiding effect can be achieved during the insertion of the insertion end into the first limiting hole and the second limiting hole, effectively reducing jamming, scratching or assembly resistance caused by assembly misalignment, thereby avoiding scratches on the assembly housing and handle caused by the edge of the insertion end, reducing wear on the insertion end and extending its service life.

[0014] Optionally, the limiting block includes a first limiting block disposed on opposite sides of the positioning body along the third direction Z, and a second limiting block disposed on opposite sides of the positioning body along the second direction Y.

[0015] In the above solution, the gap between the handle and the outer panel of the door can be fixed by setting the first limiting block on both sides of the positioning body along the third direction Z and the second limiting block on both sides of the positioning body along the second direction Y. The structure is simple and more cost-effective than the solution of arranging the limiting blocks around the outer contour of the handle.

[0016] Optionally, the lengths of the first limiting block and the second limiting block protruding from the positioning body along the first direction X of the positioning body are adjustable.

[0017] In the above solution, since the lengths of the first limiting block and the second limiting block protruding from the positioning body along the first direction X of the positioning body can be adjusted, the depth of the first limiting block and the second limiting block inserted into the mounting hole can be adjusted according to actual needs, thus improving applicability.

[0018] Optionally, the number of the first limiting blocks is four, divided into two groups. The two first limiting blocks in each group are respectively arranged on opposite sides of the positioning body along the third direction Z, and are fixedly connected by the first mounting part. The first mounting part is located on the side of the positioning body away from the handle, and the first mounting part is installed on the positioning body with adjustable spacing through the first connecting bolts. There are two second limiting blocks, which are respectively arranged on opposite sides of the positioning component body along the second direction Y. Each second limiting block is provided with a second mounting part, which is located on the side of the first mounting part away from the handle, and is installed on the positioning component body by means of the adjustable spacing of the second connecting bolts.

[0019] In the above scheme, the first limiting block and the second limiting block are respectively installed on the side of the positioning component body away from the handle through the first mounting part and the second mounting part, and the distance between the first mounting part and the second mounting part and the positioning component body is adjustable, so that the length of the first limiting block and the second limiting block protruding from the positioning component body along the first direction X of the positioning component body can be adjusted. It is not only simple in structure, but also convenient in operation.

[0020] Optionally, the two second limiting blocks may move closer or further apart relative to each other along the second direction Y.

[0021] In the above scheme, since the two second limiting blocks can move closer or further apart relative to each other along the second direction Y, the distance between the second limiting blocks can be adjusted, which can accommodate the installation of more door handles of different sizes and has better applicability.

[0022] Optionally, the second mounting part is provided with a waist-shaped hole, and the second connecting bolt is slidably connected in the waist-shaped hole along the second direction Y.

[0023] In the above solution, by sliding the second connecting bolt in the waist-shaped hole along the second direction Y, the relative position between the second mounting part and the positioning part body in the second direction Y can be adjusted, thereby adjusting the distance between the second limiting blocks. The structure is simple, the operation is convenient, and it is easy to maintain and replace.

[0024] Optionally, the limiting block has a rounded chamfer at one end facing the handle.

[0025] In the above solution, by setting a rounded chamfer at one end of the limiting block facing the handle, a good guiding effect can be achieved when the limiting block is inserted into the wall of the mounting hole of the handle, thereby improving operating efficiency and convenience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the installation effect of a concealed door handle in some embodiments of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram illustrating the usage of the concealed door handle positioning fixture in some embodiments of this application. Figure 1 ; Figure 4 for Figure 3 Enlarged view at point B in the middle; Figure 5 for Figure 4 Sectional view along the CC direction; Figure 6 This is a schematic diagram illustrating the usage of the concealed door handle positioning fixture in some embodiments of this application. Figure 2 .

[0028] Figure 7 This is a schematic diagram of the handle structure in some embodiments of this application; Figure 8 This is a schematic diagram of the assembly housing in some embodiments of this application; Figure 9 This is a schematic diagram of the structure of the limiting pin in some embodiments of this application; Figure 10 This is a top view of the positioning element in some embodiments of this application.

[0029] Figure 11 This is a front view of the positioning element in some embodiments of this application.

[0030] Figure 12 This is an exploded view of the positioning element in some embodiments of this application.

[0031] [Explanation of Labels in the Attached Image] 1: Door handle; 11: Assembly housing; 111: First limiting hole; 12: Handle; 121: Second limiting hole; 13: Rotating shaft; 2: Door outer panel; 21: Mounting holes; 3: Positioning component; 31: Positioning component body; 32: Limiting block; 321: First limiting block; 322: Second limiting block; 323: First mounting part; 324: First connecting bolt; 325: Second mounting part; 3251: Waist-shaped hole; 326: Second connecting bolt; 4: Fixing component; 41: Limiting pin; 411: Insertion end; 412: Handheld end; 5: Reinforcing plate for the outer door panel. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0034] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0038] like Figure 1 and Figure 2 As shown, the concealed door handle positioning fixture is an auxiliary installation tool used to install the door handle 1 into the mounting hole 21 of the outer door panel 2. The door handle 1 includes an assembly housing 11 and a handle 12 disposed inside the assembly housing 11. The assembly housing 11 and the handle 12 are movably connected by a rotating shaft 13. During installation, the handle 12 needs to be placed in the mounting hole 21. Then, the positioning fixture is inserted from the outside of the outer door panel 2 into the space between the handle 12 and the wall of the mounting hole 21. Using the outer contour of the handle 12 as a reference, the gap between it and the outer door panel 2 is pre-adjusted to the target value. Then, the assembly housing 11 located on the inside of the outer door panel 2 is fastened to the welding nut on the outer door panel reinforcing plate 5 with bolts. After installation, the positioning fixture is removed from the outside of the outer door panel 2. However, since there will inevitably be assembly gaps and material elastic deformation between the assembly housing 11 and the handle 12, and since the existing positioning fixture only constrains the outer contour of the handle 12, the assembly housing 11 will be affected by gravity due to its own weight and the fit gap between the handle 12 and the rotating shaft 13. This will cause the relative position between the assembly housing 11 and the handle 12 to shift in the second direction Y and the third direction Z (in this embodiment, the left and right direction of the vehicle is the first direction X, the front and back direction of the vehicle is the second direction Y, and the up and down direction of the vehicle is the third direction Z). Therefore, after the positioning fixture is removed, the handle 12 will shift uncontrollably in the second direction Y and the third direction Z due to the release of gravity and the elastic rebound of the plastic parts. This will cause the actual gap to deviate from the set value and affect the assembly effect.

[0039] In view of this, in order to solve the problem of springback deviation during door handle assembly and improve assembly accuracy and process stability, this application provides a novel concealed door handle positioning fixture, please refer to... Figures 3-6 It includes positioning component 3 and fixing component 4; wherein: The positioning element 3 includes a positioning element body 31 and a plurality of limiting blocks 32. The limiting blocks 32 are disposed on the outer peripheral wall of the positioning element body 31, and the limiting blocks 32 protrude from the positioning element body 31 along the first direction X of the positioning element body 31, for abutting against the wall between the handle 12 and the mounting hole 21. The fastener 4 is used to connect the assembly housing 11 and the handle 12 to limit the relative displacement between the assembly housing 11 and the handle 12 in the second direction Y and the third direction Z.

[0040] This application proposes a concealed door handle positioning fixture. First, the relative positions of the assembly housing 11 and the handle 12 in the second direction (Y) and the third direction (Z) are fixed by the fixing member 4. Then, the handle 12 is positioned within the mounting hole 21 by the positioning member 3. After pre-adjusting the gap between the handle 12 and the outer door panel 2 to the target value, the assembly housing 11 is bolted to the welding nut on the outer door panel reinforcing plate 5. This avoids the offset of the relative positions between the assembly housing 11 and the handle 12 in the second direction (Y) and the third direction (Z) during installation. Consequently, it prevents the actual gap between the handle 12 and the outer door panel 2 from deviating from the set value after installation, solving the problem of springback deviation during door handle assembly. This not only improves assembly accuracy and process stability but also reduces reliance on the operator's installation skill level, minimizing rework and repair issues.

[0041] In other embodiments, such as Figure 8 As shown, a first limiting hole 111 is provided through the assembly housing 11 along the first direction X, as... Figure 7 As shown, the handle 12 has a second limiting hole 121 on the side near the assembly housing 11, which is coaxial with the first limiting hole 111 and has the same diameter; Figure 5 As shown, the fixing member 4 includes a limiting pin 41 that penetrates the assembly housing 11 along the first direction X and is inserted into the handle 12. The diameter of the portion of the limiting pin 41 inserted into the first limiting hole 111 and the second limiting hole 121 is adapted to the diameter of the first limiting hole 111 and the second limiting hole 121, thereby limiting the relative displacement between the assembly housing 11 and the handle 12 in the second direction Y and the third direction Z. Of course, besides the above solution, the fixing member 4 can also be other shims or inserts that clamp the gap between the assembly housing 11 and the handle 12 in the second direction Y and the third direction Z, as long as it can limit the relative displacement between the assembly housing 11 and the handle 12 in the second direction Y and the third direction Z; no limitation is made here.

[0042] In the above solution, the relative positions of the assembly housing 11 and the handle 12 in the second direction Y and the third direction Z can be fixed by a limiting pin 41 that passes through the assembly housing 11 along the first direction X and is inserted into the handle 12. This solution is not only simple in structure but also convenient in operation. After installation, it can be pulled out directly along the first direction X.

[0043] In other embodiments, such as Figure 9As shown, the limiting pin 41 includes an insertion end 411 and a handheld end 412, and the insertion end 411 and the handheld end 412 are integrally formed; wherein, the insertion end 411 is used to penetrate the assembly housing 11 along the first direction X and insert into the handle 12, and the diameter d of the insertion end 411 is smaller than the diameter D of the handheld end 412, so that the handheld end 412 abuts against the side of the assembly housing 11 away from the handle 12.

[0044] In the above solution, the limiting pin 41 includes an integrally formed insertion end 411 and a handheld end 412, and the diameter d of the insertion end 411 is smaller than the diameter D of the handheld end 412, so that the handheld end 412 abuts against the side of the assembly housing 11 away from the handle 12, which can realize precise control of the insertion depth of the limiting pin 41 in the door handle 1 and achieve a good positioning effect.

[0045] In other embodiments, the end of the insertion end 411 is provided with a rounded chamfer, which can play a good guiding role during the insertion of the insertion end 411 into the first limiting hole 111 and the second limiting hole 121, effectively reducing jamming, scratching or assembly resistance caused by assembly misalignment, thereby avoiding scratches on the assembly housing 11 and handle 12 by the edge of the insertion end 411, reducing wear on the insertion end 411 and extending its service life.

[0046] In other embodiments, such as Figures 10-12 As shown, the limiting block 32 includes a first limiting block 321 and a second limiting block 322. The first limiting block 321 is arranged on opposite sides of the positioning body 31 along the third direction Z, and the second limiting block 322 is arranged on opposite sides of the positioning body 31 along the second direction Y.

[0047] In the above solution, the gap between the handle 12 and the outer panel of the door can be fixed by setting the first limiting block 321 on both sides of the positioning body 31 along the third direction Z and the second limiting block 322 on both sides of the positioning body 31 along the second direction Y. The structure is simple and more cost-effective than the solution of arranging the limiting blocks around the outer contour of the handle 12.

[0048] In other embodiments, the lengths by which the first limiting block 321 and the second limiting block 322 protrude from the positioning body 31 along the first direction X can be adjusted, thereby adjusting the depth at which the first limiting block 321 and the second limiting block 322 are inserted into the mounting hole 21 according to actual needs, thus improving applicability.

[0049] In other embodiments, such as Figure 11 , Figure 12 As shown, there are four first limiting blocks 321, divided into two groups. Each group has two first limiting blocks 321, which are respectively arranged on opposite sides of the positioning body 31 along the third direction Z, and are fixedly connected by a first mounting part 323. The first mounting part 323 is located on the side of the positioning body 31 away from the handle 12, and is adjustablely mounted on the positioning body 31 by first connecting bolts 324. There are two second limiting blocks 322, respectively arranged on opposite sides of the positioning body 31 along the second direction Y. Each second limiting block 322 is provided with a second mounting part 325, which is located on the side of the first mounting part 323 away from the handle 12. The handle 12 is mounted on one side of the positioning body 31 with adjustable spacing via the second connecting bolt 326. Specifically, the adjustable spacing between the first mounting part 323 and the positioning body 31 can be achieved by rotating the first connecting bolt 324 and placing a shim or washer between the first mounting part 323 and the positioning body 31. Since the second mounting part 325 is located on the side of the first mounting part 323 away from the handle 12, the second mounting part 325 will also move with the movement of the first mounting part 323. Therefore, it is only necessary to rotate the second connecting bolt 326 synchronously to achieve adjustable spacing between the second mounting part 325 and the positioning body 31.

[0050] In the above scheme, the first limiting block 321 and the second limiting block 322 are respectively installed on the side of the positioning component body 31 away from the handle 12 through the first mounting part 323 and the second mounting part 325, and the distance between the first mounting part 323, the second mounting part 325 and the positioning component body 31 is adjustable, so that the length of the first limiting block 321 and the second limiting block 322 protruding from the positioning component body 31 along the first direction X of the positioning component body 31 can be adjusted. It is not only simple in structure, but also convenient to operate.

[0051] In other embodiments, the two second limiting blocks 322 can be relatively close to or far apart along the second direction Y, so that the spacing between the second limiting blocks 322 can be adjusted, which can accommodate the installation of more different sizes of the door handle 1 and has better applicability.

[0052] In other embodiments, the process continues as follows: Figure 11 , Figure 12 As shown, the second mounting part 325 is provided with a waist-shaped hole 3251, and the second connecting bolt 326 is slidably connected in the waist-shaped hole 3251 along the second direction Y.

[0053] In the above scheme, by sliding the second connecting bolt 326 in the waist-shaped hole 3251 along the second direction Y, the relative position between the second mounting part 325 and the positioning part body 31 in the second direction Y can be adjusted, thereby adjusting the distance between the second limiting blocks 322. The structure is simple, the operation is convenient, and it is easy to maintain and replace.

[0054] In other embodiments, the limiting block 32 has a rounded chamfer at one end facing the handle 12, which can play a good guiding role when the limiting block 32 is inserted into the wall of the mounting hole 21, thereby improving operating efficiency and convenience.

[0055] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0057] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0058] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A concealed door handle positioning fixture for installing a door handle (1) into a mounting hole (21) in an outer panel (2) of a vehicle door, wherein the door handle (1) includes an assembly housing (11) and a handle (12) disposed inside the assembly housing (11), the handle (12) being disposed within the mounting hole (21), characterized in that, include: The positioning component (3) includes a positioning component body (31) and a plurality of limiting blocks (32) disposed on the outer peripheral wall of the positioning component body (31). The limiting blocks (32) protrude from the positioning component body (31) along the first direction X of the positioning component body (31) and are used to abut against the hole wall between the handle (12) and the mounting hole (21). A fastener (4) is used to connect the assembly housing (11) and the handle (12) to limit the relative displacement between the assembly housing (11) and the handle (12) in the second direction Y and the third direction Z; Wherein, the first direction X is the left-right direction of the vehicle, the second direction Y is the front-back direction of the vehicle, and the third direction Z is the up-down direction of the vehicle.

2. The concealed door handle positioning fixture according to claim 1, characterized in that, The fastener (4) includes a limiting pin (41) that extends through the assembly housing (11) in a first direction X and is inserted into the handle (12).

3. The concealed door handle positioning fixture according to claim 2, characterized in that, The limiting pin (41) includes an integrally formed insertion end (411) and a hand-held end (412). The insertion end (411) is used to penetrate the assembly housing (11) along the first direction X and be inserted into the handle (12). The diameter d of the insertion end (411) is smaller than the diameter D of the hand-held end (412).

4. The concealed door handle positioning fixture according to claim 3, characterized in that, The end of the insertion end (411) is provided with a rounded chamfer.

5. The concealed door handle positioning fixture according to any one of claims 1-4, characterized in that, The limiting block (32) includes a first limiting block (321) disposed on opposite sides of the positioning body (31) along the third direction Z, and a second limiting block (322) disposed on opposite sides of the positioning body (31) along the second direction Y.

6. The concealed door handle positioning fixture according to claim 5, characterized in that, The lengths of the first limiting block (321) and the second limiting block (322) protruding from the positioning body (31) along the first direction X are adjustable.

7. The concealed door handle positioning fixture according to claim 6, characterized in that, There are four first limiting blocks (321), divided into two groups. Two first limiting blocks (321) in each group are respectively arranged on opposite sides of the positioning body (31) along the third direction Z, and are fixedly connected by a first mounting part (323). The first mounting part (323) is located on the side of the positioning body (31) away from the handle (12). The first mounting part (323) is installed on the positioning body (31) with adjustable spacing by a first connecting bolt (324). There are two second limiting blocks (322), which are respectively arranged on opposite sides of the positioning body (31) along the second direction Y. Each second limiting block (322) is provided with a second mounting part (325). The second mounting part (325) is located on the side of the first mounting part (323) away from the handle (12), and is installed on the positioning body (31) with adjustable spacing by the second connecting bolts (326).

8. The concealed door handle positioning fixture according to claim 7, characterized in that, The two second limiting blocks (322) can move closer or further apart relative to each other along the second direction Y.

9. The concealed door handle positioning fixture according to claim 8, characterized in that, The second mounting part (325) is provided with a waist-shaped hole (3251), and the second connecting bolt (326) is slidably connected in the waist-shaped hole (3251) along the second direction Y.

10. The concealed door handle positioning fixture according to any one of claims 1-4, characterized in that, The limiting block (32) has a rounded chamfer at one end facing the handle (12).

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