CN201650993U - fixed structure - Google Patents

Abstract

A fixing structure includes a first shell, a second shell, screws and fixing pieces. The first casing includes a first hole and a second hole that are coaxial and communicated. The first hole includes a guiding section, a first receiving section and a first locking section, the guiding section is close to the outer surface of the first housing, and is provided with an inwardly protruding guiding block, the first locking section is adjacent to the second hole, The first receiving section is arranged between the guiding section and the first locking section. The second case includes a guide hole. The screw includes a threaded head and a shank. A guide groove is provided on the periphery of the head, and the guide groove cooperates with the guide block, so that the head cooperates with the first hole, and the rod part cooperates with the second hole and the guide hole to lock the first shell and the second shell body. The outer periphery of the fixing part is provided with a notch matching with the guide block, so that the fixing part is pressed between the head and the guide block, and the screw is prevented from loosening. The bottom of the first locking section is provided with a receiving groove near the side, which is used to accommodate the plastic crumbs generated during the locking of the head to the first locking section, so as to form a seal.

Description

fixed structure

technical field

The utility model mainly relates to a fixing structure, especially a screw fixing structure.

Background technique

Generally, an outdoor electronic product includes a first casing and a second casing, and the first casing and the second casing are locked by means of screws and washers or washers. Especially for electronic products with small external dimensions, washers or spacers can only be placed under the screw heads, so that the screw heads are usually exposed on the outer surface of the product, which affects the appearance of the product. Since the screw is screwed in and out in a rotating manner, the washer or spacer can be damaged during the rotation. Moreover, during use, the screws are easy to loosen, thereby affecting the performance of the product. Therefore, it is necessary to use a screw to lock the first shell and the second shell of the product, and to hide the head of the screw inside the product to ensure the appearance of the product, and to use a fixing piece to lock the product The screws are fixed to prevent the screws from loosening.

Utility model content

In view of this, it is necessary to provide a fixing structure for locking the first casing and the second casing of the electronic product, and has both aesthetic appearance and anti-loosening function.

A fixing structure provided in an embodiment of the present invention includes a first casing, a second casing, screws and fixing pieces. The first casing includes a first hole and a second hole that are coaxial and communicated, and the diameter of the first hole is larger than that of the second hole. The first hole includes a guiding section, a first receiving section and a first locking section. The guide section is close to the outer surface of the first housing, and is provided with at least one inwardly protruding guide block, the first locking section is adjacent to the second hole, and the first receiving section is located at the between the guiding section and the first locking section. The second case includes a guide hole. The screw includes a head and a shank provided with external threads. At least one guide groove is provided on the periphery of the head, and the guide groove cooperates with the guide block to put the screw into the first shell and the second shell, and make the The head is locked on the first locking section, and the rod is matched with the second hole of the first casing and the guide hole of the second casing to lock the first casing The body and the second housing are locked. At least one notch groove is provided on the periphery of the fixing piece, and the notch groove cooperates with the guide block to put the fixing piece into the first receiving section and make the fixing piece abut against the Between the head of the screw and the guide block to prevent the screw from loosening.

Preferably, the first casing, the second casing and the fixing piece are all made of plastic, and the screws are made of metal.

Preferably, the guide hole of the second casing includes a second receiving section and a second locking section connected coaxially, the diameter of the second hole is the same as that of the second receiving section, and the first The hole diameter of the second receiving section is larger than the hole diameter of the second locking section.

Preferably, the radius difference between the first receiving section and the first locking section is equal to the thread height of the head of the screw, and the radius difference between the second receiving section and the second locking section is equal to The thread height of the shank of the screw.

Preferably, the bottom of the first locking section is provided with a receiving groove close to the side, and the receiving groove is used to accommodate the plastic crumbs produced during the process of locking the head of the screw to the locking section .

Preferably, the fixing member is elastic.

Compared with the prior art, the fixing structure of the present invention adopts screw locking, and the head of the screw is accommodated in the first locking section of the first housing, which has a simple structure and ensures the aesthetic appearance of the product. At the same time, during the locking process, the tapping of the head of the screw cuts the inner wall of the locking section of the first housing to produce plastic crumbs, which fill the receiving groove to form a seal and have a waterproof function. Moreover, a fixing piece is installed on the head of the screw to prevent the screw from loosening, which further ensures the sealing between the first shell and the second shell.

Description of drawings

Fig. 1 is a schematic diagram of the unlocked state of the fixing structure of the present invention.

Fig. 2 is a structural schematic diagram of the screw of the present invention.

Fig. 3 is a schematic structural view of the fixing part of the present invention.

Fig. 4 is a schematic diagram of the locking state of the fixing structure of the present invention.

Description of main component symbols

Detailed ways

Fig. 1 is a schematic diagram of the unlocked state of the fixing structure of the present invention. The fixing structure of the present utility model includes a first shell 10 , a second shell 20 and screws 30 . The first housing 10 is made of plastic, and includes a first hole 101 and a second hole 102 that are coaxial and communicated. The diameter of the first hole 101 is larger than the diameter of the second hole 102 . The first hole 101 includes a guiding section 1010 , a first receiving section 1012 and a first locking section 1013 . The guiding segment 1010 is near the outer surface of the first casing 10 and is provided with at least one guiding block 1011 protruding inward. The first locking section 1013 is adjacent to the second hole 102 . The first receiving section 1012 is disposed between the guiding section 1010 and the first locking section 1013 , and the first receiving section 1012 has the same hole diameter as the guiding section 1010 and is slightly larger than the first locking section 1013 . A receiving groove 1014 is formed at the bottom of the first locking section 1013 near the side.

In this embodiment, the second housing 20 is also made of plastic parts, including the guide hole 201 . The guide hole 201 includes a second receiving section 2012 and a second locking section 2013 connected coaxially, the second receiving section 2012 is adjacent to the second hole 102 of the first housing 10 , and the second locking section 2013 is adjacent to the guiding hole 201 bottom of. The aperture diameter of the second receiving section 2012 is larger than the aperture diameter of the second locking section 2013 .

FIG. 2 is a structural schematic diagram of a screw 30 of the present invention. The screw 30 is a self-tapping screw made of metal for locking the first housing 10 and the second housing 20 . The screw 30 includes a head 301 with external threads and a stem 303 . At least one guiding groove 302 is formed on the periphery of the head 301 of the screw 30 . In this embodiment, the diameter of the guide section 1010 and the first receiving section 1012 is not smaller than the outer diameter of the head 301, and the radius difference between the first receiving section 1012 and the first locking section 1013 is equal to that of the head 301 of the screw 30. Thread height. The diameter of the second hole 102 is the same as the diameter of the second receiving section 2012 and adapted to the outer diameter of the rod portion 303 . In this embodiment, the radius difference between the second receiving section 2012 and the second locking section 2013 is equal to the thread height of the rod portion 303 .

Fig. 3 is a schematic structural view of the fixing part of the present invention. The fixing structure of the present utility model also includes a fixing piece 40 . The fixing part 40 has the same shape as the head 301 of the screw 30, is also made of plastic and has elasticity. The outer periphery 401 of the fixing member 40 is provided with at least one notch 402 .

Fig. 4 is a schematic diagram of the locking state of the fixing structure of the present invention. The guide groove 302 of the screw 30 cooperates with the guide block 1011 of the first housing 10 to install the screw 30 into the first housing 10 and the second housing 20 . The head 301 of the screw 30 is accommodated in the first accommodation section 1012 of the first hole 101 , and the rod 303 of the screw 30 is accommodated in the second accommodation section 2012 of the second casing 20 (as shown in FIG. 1 ). In this way, the head of the screw 30 will be embedded in the first casing 10, thereby beautifying the appearance of the product. Use a tool to tighten the screw 30, lock the head 301 of the screw 30 into the first locking section 1013 of the first hole 101, and the rod 303 is connected to the second hole 102 of the first housing 10 and the first locking section of the second housing 20. The two receiving sections 2012 cooperate with the second locking section 2013 to lock the first casing 10 and the second casing 20 .

Since the head 301 of the screw 30 has a self-tapping thread, in the process of tightening the screw 30, the head 301 will tap the inner wall of the first locking section 1013 of the first hole 101, and the screw 30 will tap during the tapping process. That is, it is tightly combined with the first hole 101 , and at the same time, plastic crumbs 50 will be generated, and these plastic crumbs 50 will finally fall into the receiving groove 1014 . When the tapping is close to the end, the head 301 of the screw 30 squeezes the plastic crumbs 50, so as to produce a sealing effect and have a waterproof function.

In order to prevent the screw 30 from loosening and affecting the performance of the product, after the screw 30 is locked, a fixing member 40 is installed between the head 301 of the screw 30 and the guide block 1011 . The notch 402 of the fixing part 40 cooperates with the guide block 1011 of the first casing 10 to install the fixing part 40 into the first receiving section 1012 of the first casing 10 . After being assembled, the fixing member 40 abuts between the head 301 of the screw 30 and the guide block 1011 to prevent the screw 30 from loosening and further ensure the sealing between the first casing 10 and the second casing 20 .

The fixing structure of the utility model is simple in structure, and the first casing 10 and the second casing 20 and the receiving groove 1014 are used to lock the first casing 10 and the second casing 20 with self-tapping screws 30 to accommodate the plastic crumbs 50 produced in the process of locking the screws 30, The sealing performance of the first casing 10 and the second casing 20 is guaranteed, and it has a waterproof function. Moreover, a fixing member 40 is added to the fixing structure of the present utility model to prevent the screw 30 from loosening to ensure the performance of the whole product, and further ensure the sealing performance of the fixing structure of the present utility model.

Claims (6)

1. a fixed structure comprises first housing, second housing and the screw of lock described first housing and second housing, it is characterized in that:

Described first housing comprises first hole and second hole coaxial and that communicate, the aperture in described first hole is greater than the aperture in described second hole, described first hole comprises guiding section, first section of accommodating and the first locking section, described guiding section is near the described first housing outer surface place, and be provided with the guiding block of at least one convex, contiguous described second hole of the described first locking section, described first section of accommodating is located between described guiding section and the described locking section;

Described second housing comprises guide hole;

Described screw comprises externally threaded head and the bar portion of being provided with, the periphery of described head is provided with at least one guide slot, described guide slot cooperates with described guiding block, in described screw is packed into described first housing and described second housing, and make described head be locked in the first locking section in described first hole, described bar portion cooperates with second hole of described first housing and the guide hole of described second housing, with described first housing and the locking of described second housing; And

Described fixed structure also comprises fixed block, the periphery of described fixed block is provided with at least one gap slot, described gap slot cooperates with described guiding block, in described first section of accommodating that described fixed block is packed into, and described fixed block is resisted against between described screw head and the described guiding block, loosening to prevent screw.

2. fixed structure as claimed in claim 1 is characterized in that, described first housing, described second housing and described fixed block are made by plastic parts, and described screw is made of metal.

3. fixed structure as claimed in claim 2, it is characterized in that, the guide hole of described second housing comprises the coaxial second continuous section of accommodating and the second locking section, the aperture in described second hole is identical with the aperture of described second section of accommodating, and the aperture of described second section of accommodating is greater than the aperture of the described second locking section.

4. fixed structure as claimed in claim 3, it is characterized in that, the semidiameter of described first section of accommodating and the described first locking section equals the thread height of the head of described screw, and the semidiameter of described second section of accommodating and the described second locking section equals the thread height of the bar portion of described screw.

5. fixed structure as claimed in claim 2 is characterized in that, the bottom of the described first locking section is provided with accepting groove near side edge, and the head that described accepting groove is used for accommodating described screw is locked in the described locking section plastic cement that process produced bits grain.

6. fixed structure as claimed in claim 2 is characterized in that described fixed block has elasticity.

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