CN215058708U

CN215058708U - Exempt from to press and rivet spring screw

Info

Publication number: CN215058708U
Application number: CN202121623740.2U
Authority: CN
Inventors: 王镜锋
Original assignee: Hebei Weiguan Electrical And Mechanical Equipment Co ltd
Current assignee: Hebei Weiguan Electrical And Mechanical Equipment Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-07
Anticipated expiration: 2031-07-16

Abstract

The application discloses a pressure-free riveting spring screw, which comprises a metal screw, a panel and a plastic shell, wherein the plastic shell is fixedly sleeved at the top of the metal screw, a plastic bushing is fixedly sleeved at the bottom end of the plastic shell, a plastic sleeve is connected to the bottom of the plastic bushing in a clearance fit manner, a limiting top ring is fixedly connected to the top end of the plastic sleeve, a spring is sleeved on the metal screw, and the plastic shell is elastically connected with the plastic sleeve through the spring; the panel surface of the panel is provided with a mounting hole, the plastic sleeve is positioned at the top of the positioning hole mounting hole, the bottom end of the plastic sleeve is embedded with a fixing sleeve, and the bottom of the fixing sleeve is matched and connected with the mounting hole. The riveting device has the beneficial effects that manual or miniature tools can be arranged on the face instead of high-power riveting equipment, machining equipment is not needed, and the greatest advantage is that the material cost and the machining cost are greatly saved.

Description

Exempt from to press and rivet spring screw

Technical Field

The application relates to the field of sheet metal processing, in particular to a pressure-free riveting spring screw.

Background

With the development of national economy and the continuous improvement of the cultural level of the materials of people, the communication, electric power and traffic industries are rapidly developed, and various plug-in box panels are required to be provided with mounting screws. For the convenience of maintenance and disassembly of the panel, the screws are spring screws.

The common spring screw in the existing market is mainly formed by processing metal materials into parts and then riveting the parts together, and is assembled with a panel in a press riveting mode, so that the cost of the metal materials and the machining is high. Therefore, a pressure-riveting-free spring screw is provided for solving the problems.

Disclosure of Invention

The embodiment provides a press-riveting-free spring screw for solving the problem that press riveting must be adopted when a common spring screw and a panel are installed in the prior art.

According to one aspect of the application, a pressure-free riveting spring screw is provided, and comprises a metal screw, a panel and a plastic shell, wherein the plastic shell is fixedly sleeved at the top of the metal screw, a plastic bushing is fixedly sleeved at the bottom end of the plastic shell, a plastic sleeve is connected to the bottom of the plastic bushing in a clearance fit manner, a limiting top ring is fixedly connected to the top end of the plastic bushing, a spring is sleeved on the metal screw, and the plastic shell is elastically connected with the plastic sleeve through the spring; the panel surface of the panel is provided with a mounting hole, the plastic sleeve is positioned at the top of the mounting hole, the bottom end of the plastic sleeve is embedded with a fixing sleeve, and the bottom of the fixing sleeve is matched and connected with the mounting hole.

Furthermore, a positioning hole is formed in the center of the bottom of the plastic bushing and is in clearance fit connection with the plastic sleeve, and the diameter of the positioning hole is smaller than the outer diameter of the limiting top ring.

Further, the cross section of the mounting hole is of an isosceles trapezoid structure.

Furthermore, four positioning blocks are uniformly arranged on the periphery of the outer wall of the fixed sleeve, the positioning blocks are connected with positioning grooves formed in the plastic sleeve in an embedded mode, the number of the positioning grooves is four, and the four positioning grooves are uniformly distributed on the periphery of the plastic sleeve.

Furthermore, four notches which are uniformly distributed are formed in the periphery of the fixing sleeve.

Through the above-mentioned embodiment of this application, adopt metal screw, plastic casing, spring, plastics bush, plastic cannula and fixed sleeve pipe, can carry out manual or miniature frock and replace the big pressure of power to rivet equipment installation on the face, do not need machining equipment to process, the biggest advantage is material cost and machining cost are saved greatly.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an overall structure of an embodiment of the present application;

FIG. 3 is a schematic view of the overall structure and panel before installation according to an embodiment of the present application;

fig. 4 is a schematic view of the whole structure and a panel after installation according to an embodiment of the present application.

In the figure: 1. metal screw, 2, plastic housing, 3, spring, 4, plastic bush, 401, locating hole, 5, plastic sleeve, 501, spacing top ring, 502, constant head tank, 6, fixed sleeve, 601, locating piece, 602, notch, 7, panel, 8, mounting hole.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The rivet-free spring screw in this embodiment may be used for installation of various panels, for example, in this embodiment, a composite floor is provided, and the rivet-free spring screw in this embodiment may be used for installation of a composite floor.

The composite floor comprises a base plate and a surface plate, wherein the surface plate is arranged on the front surface of the base plate, the back plate is pasted on the base plate in advance, the surface plate comprises wear-resistant decorative adhesive film paper and a high-density fiberboard, the wear-resistant decorative adhesive film paper is located on the outermost side, and surface layer paper is further arranged between the high-density fiberboard and the base plate. The gum dipping amount of the wear-resistant decorative adhesive film paper is 150-160%, the volatile matter content is 9-11%, and the pre-curing degree is 40-60%. The gum dipping amount of the surface paper is 150-160%, the volatile matter content is 4-6%, and the pre-curing degree is 60-80%. The high-density fiberboard has a thickness less than or equal to 1mm and a density greater than 1kg/cm 3. In the composite floor, surface paper is generally covered on the outermost layer of the surface of a base material to protect a decorative layer, so that the surface of the heated and pressurized floor is highly transparent, hard and wear-resistant, and the paper is required to be white and clean and transparent after being dipped in glue. The inventor finds that no matter how to adjust the formula of the glue when using the traditional glue for bonding, the phenomena of layering and bubbling are easy to occur between the high-density fiberboard and the substrate after hot pressing, and after using the surface paper, the problems caused by the traditional glue are perfectly solved, and particularly, the bonding effect of the surface paper with the gum dipping amount of 150-160%, the volatile matter content of 4-6% and the pre-curing degree of 60-80% is the best. The utility model also provides a preparation method of above-mentioned laminate flooring, including following step. 1. Preparing the wear-resistant decorative adhesive film paper 2 meeting the requirements, and soaking the wear-resistant decorative adhesive film paper 2 in an amino resin solution to ensure that the gum dipping amount of the wear-resistant decorative adhesive film paper is between 150 and 160 percent, the volatile matter content is between 9 and 11 percent, and the pre-curing degree is between 40 and 60 percent. 2. Preparing a high-density fiberboard meeting the requirements, wherein the thickness of the high-density fiberboard is less than or equal to 1mm, and the density of the high-density fiberboard is more than 1kg/cm 3. 3. Preparing surface paper meeting the requirements, and soaking the surface paper in an amino resin solution to ensure that the gum dipping amount of the surface paper is 150-160%, the volatile matter content is 4-6%, and the pre-curing degree is 60-80%. 4. The preparation accords with the base plate that requires, and the base plate adopts the plywood, the utility model discloses a plywood have good withstand voltage, heat resistance, paste the backplate at the back of base plate, require to adjust the number of piles of base plate according to laminate flooring's specification simultaneously. In other embodiments, boards such as solid wood strip joint boards and particle boards can be used as the substrate. 5. Cutting the wear-resistant decorative adhesive film paper 2, the high-density fiberboard, the surface layer paper and the substrate prepared in the steps 1 to 4 into the same length and width, sequentially stacking the materials from top to bottom, sending the materials into a hot press, closing the hot press, carrying out hot pressing for 150 to 300 seconds under the conditions that the pressure is 10 to 16Mpa and the temperature is 135 to 140 ℃, taking out the plate blank, ageing the plate blank for 30 minutes at room temperature, trimming the plate edge, and stacking and storing for 15 days. 6. And (5) cutting the plate blank obtained in the step (5) into a required size, slotting, forming, packaging and warehousing. After molding, moisture-proof treatment such as wax sealing can be performed as required. The utility model discloses a laminate flooring has effectively solved the problem that traditional laminate flooring is easy to split in geothermal environment: because the high-density fiberboard with the thickness less than or equal to 1mm is arranged between the wear-resistant decorative film adhesive paper and the substrate, the high-density fiberboard protects the wear-resistant decorative film adhesive paper from being stretched to cause cracking in the process of drying shrinkage and wet expansion in a geothermal environment. The utility model discloses a composite floor has effectively solved the bonding problem between traditional composite floor's the multilayer: surface paper is used as an adhesive layer to replace the traditional glue, and the layering and bubbling phenomena caused by overhigh water content in the hot pressing link during the preparation of the composite floor are reduced by controlling the content of volatile matters in the surface paper; through the degree of precuring of control top paper for the steel form of hot press need not can make the binder solidification in the top paper with top paper direct contact, thereby bond base plate and high density fiberboard. The utility model discloses a composite floor has effectively solved the poor problem of waterproof nature of traditional composite floor: through the high gum dipping amount of controlling wear-resisting decoration glued membrane paper and top layer paper, in hot pressing process, the glue in wear-resisting decoration glued membrane paper and the top layer paper fully flows to in the hole of infiltration high density fiberboard, solidification forms the protection, and effective separation moisture soaks, and the volatile matter content in the wear-resisting decoration glued membrane paper is high, has promoted the osmotic power of glue greatly. Right the utility model discloses a laminate flooring carries out following experiment. Surface crack resistance test: and (3) placing the product test piece in a 100 ℃ forced air drying oven to keep heating for 72h (the experimental conditions required by the national standard are 70 ℃ and 24h for drying), and the plate surface is not cracked. Surface cold and heat cycle resistance experiment: the product test piece is placed in a blast drying oven at 100 ℃ and kept heated for 2h, and then is placed in a refrigerator at-30 ℃ and frozen for 2h, and the cycle is 4 times (the experimental conditions required by the national standard are that the temperature is cooled and heated at 65 ℃ and the temperature is cooled and heated at-25 ℃ for 4 times), and the cracking and the bubbling are not generated. Water resistance test: soaking the product test piece in water for 24h, controlling the water temperature to be 20 ℃, and ensuring that the swelling rate is less than or equal to 2 percent after water absorption.

Of course, the present embodiment can also be used for plate bodies with other structures. The details are not repeated here, and the pressure-riveting-free spring screw according to the embodiment of the present application is described below.

Referring to fig. 1-4, a pressure-free riveting spring screw comprises a metal screw 1, a panel 7 and a plastic shell 2, wherein the plastic shell 2 is fixedly sleeved on the top of the metal screw 1, the plastic shell 2 and the metal screw 1 are installed together through injection molding, a plastic bushing 4 is fixedly sleeved at the bottom end of the plastic shell 2, a plastic sleeve 5 is connected to the bottom of the plastic bushing 4 in a clearance fit manner, a limit top ring 501 is fixedly connected to the top end of the plastic sleeve 5, a spring 3 is sleeved on the metal screw 1, and the plastic shell 2 is elastically connected with the plastic sleeve 5 through the spring 3; the panel surface of the panel 7 is provided with a mounting hole 8, the plastic sleeve 5 is positioned at the top of the mounting hole 8, the bottom end of the plastic sleeve 5 is embedded with a fixing sleeve 6, and the bottom of the fixing sleeve 6 is matched and connected with the mounting hole 8.

The plastic bushing is characterized in that a positioning hole 401 is formed in the center of the bottom of the plastic bushing 4, the positioning hole 401 is in clearance fit connection with the plastic bushing 5, the aperture of the positioning hole 401 is smaller than the outer diameter of the limiting top ring 501, the limiting top ring 501 plays a limiting role, and the plastic bushing 5 is prevented from being separated from the plastic bushing 4.

The cross section of mounting hole 8 is isosceles trapezoid structure, and mounting hole 8 is the round platform type, and the top aperture is less than the bottom aperture.

Four positioning blocks 601 are uniformly arranged on the periphery of the outer wall of the fixed sleeve 6, the positioning blocks 601 are connected with positioning grooves 502 formed in the plastic sleeve 5 in an embedded mode, the number of the positioning grooves 502 is four, the four positioning grooves 502 are uniformly distributed on the periphery of the plastic sleeve 5, and the positioning blocks 601 and the positioning grooves 502 are embedded to achieve positioning.

Four notches 602 which are uniformly distributed are formed in the periphery of the fixed sleeve 6, and the notches 602 realize the deformation of the periphery of the fixed sleeve 6.

The using method comprises the following steps: when the whole compression-free riveting spring 3 screw is used, the plastic shell 2 is held, the plastic sleeve 5 is aligned to the top of the mounting hole 8, namely the end with the smaller aperture of the mounting hole 8, the fixed sleeve 6 is plugged in from the bottom of the mounting hole 8, namely the end with the larger aperture of the mounting hole 8, the bottom of the fixed sleeve 6 is embedded with the mounting hole 8, the bottom of the fixed sleeve 6 is matched with the mounting hole 8 and is of a circular platform structure, namely, the cross section of the fixed sleeve is of an isosceles trapezoid structure; fixed sleeve 6 passes through the setting of notch 602, and fixed sleeve 6 sets up locating piece 601, receives plastic sleeve 5's extrusion to fixed sleeve 6 all around all to inboard extrusion deformation, until locating piece 601 removes constant head tank 502 department, locating piece 601 loses and blocks, thereby through the elasticity after the extrusion deformation, provides the drive, and locating piece 601 enters into constant head tank 502, fixes a position, has accomplished holistic installation, and the realization is installed on panel 7.

The fixing sleeve 6 is made of elastic material and can be made of PE plastic.

The application has the advantages that: by adopting the metal screw, the plastic shell, the spring, the plastic bushing, the plastic sleeve and the fixed sleeve, the manual or miniature tool can be installed on the face instead of a high-power riveting device, machining equipment is not needed, and the greatest advantage is that the material cost and the machining cost are greatly saved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a exempt from to press and rivet spring screw which characterized in that: the plastic screw comprises a metal screw (1), a panel (7) and a plastic shell (2), wherein the plastic shell (2) is fixedly sleeved at the top of the metal screw (1), a plastic bushing (4) is fixedly sleeved at the bottom end of the plastic shell (2), a plastic sleeve (5) is connected to the bottom of the plastic bushing (4) in a clearance fit manner, a limiting top ring (501) is fixedly connected to the top end of the plastic sleeve (5), a spring (3) is sleeved on the metal screw (1), and the plastic shell (2) is elastically connected with the plastic sleeve (5) through the spring (3);

the panel is characterized in that a mounting hole (8) is formed in the panel surface of the panel (7), the plastic sleeve (5) is located at the top of the positioning hole mounting hole (8), the bottom end of the plastic sleeve (5) is embedded with the fixing sleeve (6), and the bottom of the fixing sleeve (6) is connected with the mounting hole (8) in a matched mode.

2. The exempt pressure riveting spring screw of claim 1 characterized in that: the plastic bushing is characterized in that a positioning hole (401) is formed in the center of the bottom of the plastic bushing (4), the positioning hole (401) is in clearance fit connection with the plastic sleeve (5), and the diameter of the positioning hole (401) is smaller than the outer diameter of the limiting top ring (501).

3. The exempt pressure riveting spring screw of claim 1 characterized in that: the section of the mounting hole (8) is of an isosceles trapezoid structure.

4. The exempt pressure riveting spring screw of claim 1 characterized in that: four positioning blocks (601) are uniformly arranged on the periphery of the outer wall of the fixed sleeve (6), the positioning blocks (601) are connected with positioning grooves (502) formed in the plastic sleeve (5) in an embedded mode, the number of the positioning grooves (502) is four, and the four positioning grooves (502) are uniformly distributed on the periphery of the plastic sleeve (5).

5. The exempt pressure riveting spring screw of claim 1 characterized in that: four notches (602) which are uniformly distributed are formed in the periphery of the fixed sleeve (6).