CN212810101U

CN212810101U - Linking structure for linking button head and contact module

Info

Publication number: CN212810101U
Application number: CN202021450684.2U
Authority: CN
Inventors: 张伟; 双勇剑
Original assignee: Shanghai Tayee Electric Co Ltd
Current assignee: Shanghai Tayee Electric Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-03-26
Anticipated expiration: 2030-07-21

Abstract

The utility model relates to a linking structure for linking a button head and a contact module, which is a n-shaped structure and comprises an integrally formed upper end part and two side end parts arranged in parallel, wherein the upper end part of the linking structure is provided with a through hole matched with the lower end part of the button head in size, an elastic guide part with gradually enlarged ports from bottom to top is vertically extended upwards along the circumferential edge of the through hole, and a cavity matched with the shape of the upper end part of the contact module is formed between the two side end parts of the linking structure; the inner peripheral surface of elasticity guide part is provided with the recess of two symmetry formulas at least, turns round to be provided with on the outer peripheral face of head with recess assorted arch, turns round when inserting the through-hole on the linking structure downwards, protruding lock forms the back-off fastening in the recess. The utility model discloses a linking structure of linking button head and contact module dismantles and changes convenience, labour saving and time saving.

Description

Linking structure for linking button head and contact module

Technical Field

The utility model belongs to a switch button technical field, concretely relates to link up button head and contact module's linking structure.

Background

The switch knob (including knob and key knob) is a basic electric appliance suitable for interlocking use as control signal in the electric control circuit of AC or DC numerically-controlled machine tool, machinery, electric power, telecommunication, ship, metallurgy, chemical industry and other industries. A typical switch knob consists of a switch knob operator, a contact module, and a connecting bracket.

At present, the switch knob operators and the connecting brackets of the same kind of products are generally connected in the industry by adopting a traditional locking mode or a screw fastening mode. The screw fastening connection mode has the defects of complex connection, inconvenient disassembly and assembly, and extremely wasted labor hour when in later operation such as maintenance or replacement; the traditional locking mode is adopted to achieve the locking and loosening effects through plastic deformation, and the structure is influenced by factors such as the strength and toughness of materials, so that the locking structure is easy to break; and the connection is unreliable, and the connection can be loosened by slight external force, so that the contact is unreliable, and the use function is influenced.

Disclosure of Invention

In order to overcome the defects of complicated connection mode, inconvenient disassembly and assembly and unstable connection between the switch knob operator and the connecting bracket in the prior art, the utility model provides a connection structure for connecting the button head and the contact module, the button head and the contact module are firmly connected by designing a mechanical structure, and only one screwdriver needs to be pried by a lever at a corresponding position during disassembly and assembly, so that the button head and the contact module can be easily disassembled and replaced; in the case where the stopper is not provided as another component, it is possible to prevent malfunction of the instrument due to an unexpected external force action by the operator and damage due to an impact action such as dropping.

In order to achieve the purpose, the technical scheme of the application is as follows:

a linking structure for linking a button head and a contact module is of an n-shaped structure and comprises an integrally formed upper end part and two side end parts arranged in parallel, a through hole matched with the size of the lower end part of the button head is formed in the upper end part of the linking structure, an elastic guide part with a gradually enlarged port from bottom to top is vertically extended upwards along the circumferential edge of the through hole, the lower end of a twisting head is slidably inserted into and fixed in the middle through hole of the linking structure along the elastic guide part, a cavity matched with the shape of the upper end part of the contact module is formed between the two side end parts of the linking structure, and the upper end part of the contact module is arranged in the cavity and is in interference connection with the inner wall of the cavity;

the inner peripheral surface of elasticity guide part is provided with the recess of two symmetry formulas at least, turns round to be provided with on the outer peripheral face of head with recess assorted arch, turns round when inserting the through-hole on the linking structure downwards, protruding lock forms the back-off fastening in the recess.

The preferable technical scheme is as follows:

according to the structure for connecting the button head and the contact module, the upper end of the contact module is provided with the plurality of bulges which are perpendicular to the upper end face of the contact module and fixed, the bottom surface of the lower end part of the button head is provided with the slotted hole matched with the bulges, and the bulges are inserted into the slotted hole when the button head is inserted into the middle through hole of the connecting structure.

An engagement structure for engaging a button head with a contact module as described above, the mating relationship between the engagement structure and the contact module being one-to-one or one-to-many.

The structure for connecting a button head and a contact module as described above, wherein at least one slot is disposed at the bottom end of the side end of the connecting structure, a trapezoidal protrusion is disposed on the side end surface of the contact module, and the trapezoidal protrusion of the contact module is inserted into the slot of the connecting structure during assembly.

According to the connecting structure for the connecting button head and the contact module, the number of the clamping grooves in the connecting structure is 3, and the clamping grooves are arranged in parallel at equal intervals along the side end part of the connecting structure.

In the above engaging structure for engaging the button head with the contact module, the trapezoidal protrusion is a right-angled trapezoidal protrusion, and an edge of the trapezoidal protrusion facing the assembling direction of the engaging structure and the contact module is a bevel edge.

Has the advantages that:

the utility model discloses a link up structure of button head and contact module, through designing mechanical structure with button head and contact module firm linking, only need a screwdriver to prize through the lever of corresponding position during dismouting, then can easily dismantle the change, the later stage of being convenient for need overhaul or change, labour saving and time saving; meanwhile, under the condition that the connecting button does not have a stop block as other parts, the damage to the connecting button head and the contact module caused by impact action such as poor work, falling and the like of an instrument caused by rod misoperation due to unexpected external force action of an operator can be prevented.

Drawings

Fig. 1 is a schematic structural view of a connection structure of a connection button head and a contact module according to the present invention;

fig. 2 is an assembly view of an engagement structure of the engagement button head and the contact module according to the present invention;

fig. 3 is a schematic plan view of an engagement structure of an engagement button head and a contact module according to the present invention;

fig. 4 is a schematic view of a spring opening collar structure of an engagement button head and contact module according to the present invention;

wherein, 1-is a linking structure; 11-upper end portion; 12-side end; 13-a through hole; 14-a guide; 15-a card slot; 16-a groove; 17-a stripper plate; 2-twisting the head; 21-bulge; 3-a contact module; 31-a bump; 32-trapezoidal protrusions; 4-spring open collar.

Detailed Description

The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

As shown in fig. 1 and fig. 2, the connection structure of the connection button head and the contact module of the present invention, the connection structure 1 is a pi-shaped structure, and includes an integrally formed upper end portion 11 and two side end portions 12 arranged in parallel, the upper end portion of the connection structure 1 is provided with a through hole 13 matching with the size of the lower end portion of the button head 2, and an elastic guiding portion 14 extending upwards along the circumferential edge of the through hole and having an opening gradually enlarged from bottom to top is vertically extended upwards; the lower end of the twisting head 2 is inserted into and fixed in a middle through hole 13 of the connecting structure along the elastic guide part 14 in a sliding manner, a cavity matched with the shape of the upper end part of the contact module 3 is formed between the end parts 12 at two sides of the connecting structure, and the upper end part of the contact module 3 is arranged in the cavity and is in interference connection with the inner wall of the cavity;

as shown in fig. 3, in order to make the connection between the connection structure 1 and the twisting head 2 more secure, the inner circumferential surface of the elastic guide portion 14 is provided with at least two symmetrical grooves 16, and correspondingly, the outer circumferential surface of the twisting head 2 is provided with protrusions 21 matching with the grooves 16, when the twisting head 2 is inserted downwards into the through hole 13 on the connection structure 1, the elastic guide portion 14 is tightly matched with the twisting head 2, and the protrusions 21 are buckled in the grooves 16 to form a back-off fastening.

A ring of spring opening collars 4 for inwardly tightening the elastic guide parts 14 is arranged along the periphery of the elastic guide parts 14, and also plays a role in connecting and fastening the twisting head 2 with the engagement structure 1, wherein the structure of the spring opening collars 4 is shown in fig. 4.

In order to facilitate the torsion of the head 2 to be detached from the connecting structure 1, an elastic groove is formed at the joint of the end parts 12 at two sides of the connecting structure 1 and the upper end part 11, an extrusion plate 17 is arranged in the elastic groove, and the elastic action of the extrusion plate 17 is favorable for the detachment of the torsion head 2.

The upper end of the contact module 3 is provided with a plurality of protrusions 31 which are perpendicular to the upper end face of the contact module and are fixed, the bottom surface of the lower end part of the button head 2 is provided with a groove hole (not shown in the figure) matched with the protrusions, when the button head 2 is inserted into the middle through hole 13 of the linking structure, the protrusions are inserted into the groove hole, and the protrusions 31 and the groove hole are matched to prevent the contact module 3 from falling off.

More specifically, the side of the projection 31 is formed with a falling off preventive rib which blocks the projection 31 from being withdrawn from the slot hole.

At least one clamping groove 15 is formed in the bottom end of the side end portion 12 of the connection structure, a trapezoidal protrusion 32 is arranged on the side end face of the contact module, and the trapezoidal protrusion 32 of the contact module is inserted into the clamping groove of the connection structure during assembly.

The mating relationship between the engagement structure 1 and the contact module 3 is one-to-one or one-to-many. I.e. a plurality of contact modules 3 can be fitted under the adapter structure 1. More specifically, as shown in fig. 2, the number of the slots 15 on the engagement structure is 3, and the slots are arranged in parallel and equidistantly along the side end of the engagement structure; the trapezoidal protrusion 32 is a right-angled trapezoidal protrusion, and the edge of the trapezoidal protrusion facing the direction of assembly of the linking structure and the contact module is a hypotenuse. The purpose of this arrangement is to strengthen the connection between the joining structure 1 and the contact module 3, and to prevent the contact module 3 from falling off.

During installation, the button head 2 is installed in the middle through hole 13 of the connecting structure through the guiding function of the guiding part 14, and then the contact module 3 is correspondingly assembled;

when the button head is disassembled, a screwdriver or a hard thin cylindrical object can be used for prying the extrusion plate 17, and the button head 2 can be disassembled from the connecting structure 1; the contact module 3 is shaken from left to right to be taken out from the clamping groove 15.

Claims

1. A connection structure for connecting a button head and a contact module is characterized in that the connection structure is of an n-shaped structure and comprises an integrally formed upper end part and two side end parts arranged in parallel, the upper end part of the connection structure is provided with a through hole matched with the size of the lower end part of the button head, an elastic guide part with a gradually enlarged port from bottom to top is vertically extended upwards along the circumferential edge of the through hole, the lower end of a twisting head is slidably inserted into and fixed in the middle through hole of the connection structure along the elastic guide part, a cavity matched with the shape of the upper end part of the contact module is formed between the two side end parts of the connection structure, and the upper end part of the contact module is arranged in the cavity and is in interference connection with the inner wall of the cavity;

2. The structure of claim 1, wherein the contact module has a plurality of protrusions fixed perpendicular to the upper surface of the contact module at the upper end, and the bottom of the lower end of the button head has slots for engaging the protrusions, and the protrusions are inserted into the slots when the button head is inserted into the through hole of the engagement structure.

3. The engagement structure of an engagement button head and contact module as claimed in claim 1, wherein the mating relationship between the engagement structure and the contact module is one-to-one or one-to-many.

4. The structure of any one of claims 1 to 3, wherein at least one slot is formed at a bottom end of a side end of the engagement structure, and a trapezoidal protrusion is formed on a side end surface of the contact module, and the trapezoidal protrusion of the contact module is inserted into the slot of the engagement structure during assembly.

5. The structure of claim 4, wherein the number of the engaging grooves on the engaging structure is 3, and the engaging grooves are arranged in parallel and equidistantly along the side end of the engaging structure.

6. The structure of claim 4, wherein the protrusion is a right trapezoid protrusion, and the edge of the trapezoid protrusion facing the direction of assembling the engagement structure and the contact module is a bevel edge.