A glue-free cabinet door handle structure based on negative tolerance fit

Abstract

The utility model relates to handle structure technical field, concretely is a kind of glue-free cabinet door handle structure based on negative tolerance cooperation, including door panel main body, door panel main body front side is equipped with handle assembly, and handle assembly includes handle main body, handle main body rear end is equipped with pre-install back shell, and pre-install back shell back inlay assembly is in door panel main body front side surface, pre-install back shell back is integrally fixed with the assembly insert strip, and assembly insert strip is inserted and assembled in door panel main body front side interior and relies on interference fit assembly fastening.The utility model is convenient for combination assembly embedding according to use needs, breaks the traditional thinking mode of most inlay handle fixed assembly relying on adhesive, relies on the assembly fastening of the cooperation of negative tolerance through interference fit, improves use assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of handle structure technology, specifically a glue-free cabinet door handle structure based on negative tolerance fit. Background Technology

[0002] Cabinet door handles, as core functional accessories of cabinets, primarily provide users with a point of leverage for opening and closing cabinet doors, while also serving an auxiliary function of decorating the cabinet's appearance. Currently, there are many types of cabinet door handles on the market. Based on installation method, they can be divided into fixed handles and movable handles; based on material, they can be divided into metal handles, wooden handles, plastic handles, etc.; and based on structural form, they include strip handles, ball handles, concealed handles, etc., with embedded handles being quite common. In response, Chinese patent application number CN202220403749.0 discloses an aluminum alloy handle, including a structural body. The structural body includes a handle assembly and a connecting plate. The handle assembly includes a handle part and two support parts, one of which is located on the left side of the connecting plate and the other of which is located on the right side of the connecting plate. The bottom of the connecting plate is provided with adhesive paper and release paper. The adhesive paper is glued to the connecting plate, and the release paper covers the surface of the adhesive paper. The handle assembly is fastened together by the connecting plate and the adhesive paper. However, most existing handle structures are inconvenient to assemble and embed according to usage needs. Embedded handles mostly rely on adhesives for fixing and assembly, which can easily cause inconvenience in assembly and subsequent maintenance, thus affecting the efficiency of use and assembly. Therefore, in order to solve the above problems, a glue-free cabinet door handle structure based on negative tolerance fit is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a glue-free cabinet door handle structure based on negative tolerance fit, so as to solve the problems mentioned in the background art that most of the existing handle structures are inconvenient to combine and assemble according to the needs of use, and that embedded handles mostly rely on adhesives for fixed assembly, which can easily cause inconvenience in assembly and subsequent maintenance, thus affecting the efficiency of use and assembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a glue-free cabinet door handle structure based on negative tolerance fit, comprising a door panel body, a handle assembly mounted on the front side of the door panel body, the handle assembly including a handle body, a pre-installed back shell mounted on the rear end of the handle body, the back of the pre-installed back shell being inlaid and mounted on the front surface of the door panel body, an assembly insert being integrally fixed on the back of the pre-installed back shell, and the assembly insert being inserted and mounted inside the front side of the door panel body and fastened by interference fit.

[0005] As a further step of this solution, auxiliary teeth are integrally fixed on both sides of the outer wall of the assembly strip, and the auxiliary teeth are locked inside the door panel body. The door panel body has auxiliary grooves corresponding to the auxiliary teeth and the assembly strip.

[0006] As a further step of this solution, the two sets of assembly inserts are symmetrically distributed on the back of the pre-installed back shell, and corresponding auxiliary grooves are also provided on the front side of the door panel body.

[0007] As a further step of this solution, the front surface of the main body of the door panel is provided with a pre-installed recessed groove corresponding to the back of the pre-installed back shell, and side abutment strips are integrally provided on both sides of the back of the pre-installed back shell.

[0008] As a further step of this solution, the two side walls of the side abutment strip are flush with the outer wall of the pre-installed back shell, and the inner side of the side abutment strip is arc-shaped. The two sides inside the pre-installed sink are provided with side abutment grooves corresponding to the side abutment strip.

[0009] As a further step of this solution, an inner card plate is integrally provided on the rear side of the handle body, and the inner card plate is inserted into the pre-installed back shell. The pre-installed back shell has an inner card slot corresponding to the inner card plate, and an outer card is integrally provided on the rear of the handle body, and the outer card is located on the front side of the inner card plate and the pre-installed back shell.

[0010] As a further step of this solution, the outer card and the inner card plate are arranged in parallel, and the outer card and the inner card plate are in the shape of "I" with the handle body. The front side of the handle body is curved in an arc, and a reinforcing rib is inclinedly supported and fixed between the middle of the inner side of the handle body and the outer card.

[0011] As a further step of this solution, the inner card plate is integrally provided with inner protrusions on both sides, and the inner protrusions are engaged on both sides of the front side wall of the pre-installed back shell. The inner protrusions are arranged in an arc shape, and the front side wall of the pre-installed back shell is provided with inner grooves corresponding to the inner protrusions on both sides.

[0012] As a further step of this solution, the two sides of the front sidewall of the pre-installed back shell and the two sides of the inner card plate are fastened by threaded limit screws, and a hidden groove corresponding to the outer end of the limit screw is opened on the surface of the front sidewall of the pre-installed back shell.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this utility model is easy to combine and assemble according to the needs of use, breaking the traditional mindset that embedded handles mostly rely on adhesives for fixed assembly, and relying on negative tolerance fit to assemble and fasten through interference fit, thereby improving the efficiency of use and assembly. 1. This utility model, by setting an assembly insert, with the cooperation of auxiliary teeth and auxiliary grooves, applies external force to the outside of the pre-assembled back shell during assembly, and presses the auxiliary teeth and assembly insert into the auxiliary groove, relying on interference fit to achieve fixation, realizing the precise application of negative tolerance fit, and cleverly utilizing the elasticity of the board to achieve the effect of "elastic pressing and self-locking fixation". Through this design, the convenience and practicality of the glue-free cabinet door handle structure based on negative tolerance fit are improved.

[0014] 2. This utility model, by providing a handle body and a pre-installed back cover, facilitates the auxiliary combination to form a handle assembly during assembly and use, and also facilitates subsequent disassembly and replacement, making operation and use more convenient. It also facilitates partial disassembly and replacement in case of partial damage. At the same time, it can also replace the assembled handle with different front ends of the handle body according to the needs of use. Through this design, the convenience and practicality of the glue-free cabinet door handle structure based on negative tolerance fit are improved. Attached Figure Description

[0015] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom-view perspective view of the overall structure of this utility model; Figure 3 This is a top view sectional perspective of the structure of this utility model; Figure 4 This is a three-dimensional side view sectional diagram of the structure of this utility model; Figure 5 This is an exploded three-dimensional assembly view of the structure of this utility model. In the diagram: 100, Door panel body; 110, Handle assembly; 120, Handle body; 121, Inner retaining plate; 122, Inner retaining groove; 123, Outer retaining plate; 124, Inner protrusion; 125, Inner groove; 126, Limiting screw; 127, Hidden recess; 128, Reinforcing rib; 130, Pre-installed back cover; 131, Pre-installed recess; 132, Side abutment strip; 133, Side abutment groove; 140, Assembly insert; 141, Auxiliary toothed opening; 142, Auxiliary toothed groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5One embodiment provided by this utility model: A glue-free cabinet door handle structure based on negative tolerance fit includes a door panel body 100, a handle assembly 110 is assembled on the front side of the door panel body 100, and the handle assembly 110 includes a handle body 120. A pre-installed back shell 130 is assembled on the rear end of the handle body 120, and the back of the pre-installed back shell 130 is embedded and assembled on the front surface of the door panel body 100. An assembly insert 140 is integrally fixed on the back of the pre-installed back shell 130, and the assembly insert 140 is inserted and assembled inside the front side of the door panel body 100 and fastened by interference fit.

[0018] As described in more detail in this embodiment, auxiliary teeth 141 are integrally fixed on both sides of the outer wall of the assembly insert 140, and the auxiliary teeth 141 are engaged inside the door panel body 100. The door panel body 100 has auxiliary grooves 142 corresponding to the auxiliary teeth 141 and the assembly insert 140. In this way, during assembly and use, it is convenient to assemble by cooperating with the auxiliary teeth 141 and the auxiliary grooves 142, so that the assembly insert 140 can be inserted by tapping, making operation and use more convenient. Two sets of assembly inserts 140 are symmetrically distributed on the back of the pre-installed back shell 130, and the front side of the door panel body 100 also has corresponding auxiliary grooves 142. In this way, auxiliary insertion and fastening are performed during assembly and use, making operation and use more convenient and stable.

[0019] As described in more detail in this embodiment, the front surface of the door panel body 100 is provided with a pre-installed recess 131 corresponding to the back of the pre-installed back cover 130, and side abutment strips 132 are integrally provided on both sides of the back of the pre-installed back cover 130. In this way, it is convenient to insert and assemble the pre-installed back cover 130 during assembly and use, making subsequent operations more convenient. The two side walls of the side abutment strips 132 are flush with the outer wall of the pre-installed back cover 130, and the inner side of the side abutment strips 132 is arc-shaped. The two sides inside the pre-installed recess 131 are provided with side abutment grooves 133 corresponding to the side abutment strips 132. In this way, it is convenient to assist in the limiting and locking assembly of the pre-installed back cover 130 during assembly and use, making operation and use more convenient and stable.

[0020] As described in more detail in this embodiment, an inner locking plate 121 is integrally provided on the rear side of the handle body 120, and the inner locking plate 121 is inserted into the pre-installed back cover 130. The pre-installed back cover 130 has an inner locking groove 122 corresponding to the inner locking plate 121. An outer card 123 is integrally provided on the rear of the handle body 120, and the outer card 123 is located on the front side of the inner locking plate 121 and the pre-installed back cover 130. In this way, it is convenient to limit and lock the handle body 120 and the pre-installed back cover 130 during assembly and use. Assembly facilitates initial fixation, making operation and use more convenient; the outer card 123 and the inner card plate 121 are set in parallel, and the outer card 123 and the inner card plate 121 form an "I" shape with the handle body 120. The front side of the handle body 120 is curved, and a reinforcing rib plate 128 is inclinedly supported and fixed between the middle of the inner side of the handle body 120 and the outer card 123; thus, it is convenient to fasten the assembly, and it is also convenient to pull the front end of the handle body 120, making the operation more stable; As described in more detail in this embodiment, the inner card plate 121 has an integrally formed inner protrusion 124 on both sides, and the inner protrusion 124 is engaged with the front sidewall of the pre-installed back shell 130. The inner protrusion 124 is arc-shaped and protrudes, and the front sidewall of the pre-installed back shell 130 has inner grooves 125 corresponding to the inner protrusion 124 on both sides. This facilitates auxiliary positioning and engagement during assembly and use, making the insertion more stable and convenient. The front sidewall of the pre-installed back shell 130 and the inner card plate 121 are fastened by threaded limit screws 126, and the surface of the front sidewall of the pre-installed back shell 130 has a hidden recess 127 corresponding to the outer end of the limit screw 126. This facilitates auxiliary positioning and fastening during assembly and use, and also facilitates subsequent disassembly.

[0021] Working principle: During assembly and use, with the cooperation of the assembly insert 140 and the auxiliary tooth 141, corresponding auxiliary tooth grooves 142 and pre-installation recesses 131 are opened at the mounting location on the surface of the door panel body 100 to facilitate the snap-fit ​​assembly of the pre-installed back cover 130 onto the surface of the door panel body 100. Subsequently, external force is applied to knock, inserting the assembly insert 140 and the auxiliary tooth 141 into the auxiliary tooth groove 142, and embedding the pre-installed back cover 130 into the pre-installation recess 131. The side abutment 132 and side... With the cooperation of the anti-groove 133, positioning and limiting are performed to facilitate stable use later. Then, with the cooperation of the inner card plate 121, the inner card groove 122 and the outer card 123, the back of the handle body 120 is snapped into the pre-installed back shell 130. Then, with the cooperation of the inner protrusion 124 and the inner groove 125, preliminary snapping is performed. The limiting screw 126 is tightened to make the assembly more stable. With the cooperation of the reinforcing rib plate 128 and the handle body 120, the use of the handle is more convenient and stable. The operation is now complete.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A glue-free cabinet door handle structure based on negative tolerance fit, comprising a door panel body (100), characterized in that: The front side of the door panel body (100) is equipped with a handle assembly (110), and the handle assembly (110) includes a handle body (120). The rear end of the handle body (120) is equipped with a pre-installed back shell (130), and the back of the pre-installed back shell (130) is inlaid and installed on the front surface of the door panel body (100). The back of the pre-installed back shell (130) is integrally fixed with an assembly insert (140), and the assembly insert (140) is inserted and installed inside the front side of the door panel body (100) and fastened by interference fit.

2. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 1, characterized in that: The outer walls of the assembly insert (140) are integrally fixed with auxiliary teeth (141), and the auxiliary teeth (141) are locked inside the door panel body (100). The door panel body (100) has an auxiliary tooth groove (142) corresponding to the auxiliary teeth (141) and the assembly insert (140).

3. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 2, characterized in that: The two sets of assembly inserts (140) are symmetrically distributed on the back of the pre-installed back shell (130), and the front side of the door panel body (100) is also provided with corresponding auxiliary tooth grooves (142).

4. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 1, characterized in that: The front surface of the door panel body (100) is provided with a pre-installed recess (131) corresponding to the back of the pre-installed back shell (130), and side abutment strips (132) are integrally provided on both sides of the back of the pre-installed back shell (130).

5. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 4, characterized in that: The two side walls of the side abutment strip (132) are flush with the outer wall of the pre-installed back shell (130), and the inner side of the side abutment strip (132) is arc-shaped. The two sides of the pre-installed sink (131) are provided with side abutment grooves (133) corresponding to the side abutment strip (132).

6. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 1, characterized in that: The handle body (120) is integrally provided with an inner card plate (121) on the rear side, and the inner card plate (121) is inserted into the pre-installed back shell (130). The pre-installed back shell (130) has an inner card slot (122) corresponding to the inner card plate (121) inside, and an outer card (123) is integrally provided on the rear of the handle body (120), and the outer card (123) is located on the front side of the inner card plate (121) and the pre-installed back shell (130).

7. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 6, characterized in that: The outer card (123) and the inner card plate (121) are arranged in parallel, and the outer card (123) and the inner card plate (121) are in the shape of "I" with the handle body (120). The front side of the handle body (120) is curved, and a reinforcing rib plate (128) is inclinedly supported and fixed between the middle of the inner side of the handle body (120) and the outer card (123).

8. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 6, characterized in that: The inner card plate (121) has an inner protrusion (124) integrally provided on both sides, and the inner protrusion (124) is engaged on both sides of the front side wall of the pre-installed back shell (130). The inner protrusion (124) is arc-shaped and protruding, and the front side wall of the pre-installed back shell (130) has inner grooves (125) corresponding to the inner protrusion (124) on both sides.

9. The glue-free cabinet door handle structure based on negative tolerance fit according to claim 8, characterized in that: The two sides of the front side wall of the pre-installed back shell (130) and the two sides of the inner card plate (121) are fastened by the threaded insertion of the limiting screws (126), and the surface of the front side wall of the pre-installed back shell (130) is provided with a hidden groove (127) corresponding to the outer end of the limiting screw (126).

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