CN214474937U

CN214474937U - Touch-control type detection pressure head

Info

Publication number: CN214474937U
Application number: CN202120509344.0U
Authority: CN
Inventors: 李�浩; 刘跃; 王俊
Original assignee: Suzhou HYC Technology Co Ltd
Current assignee: Suzhou HYC Technology Co Ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-22
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a touch-control formula detects pressure head, include: connecting blocks; the touch pressure head is connected with the connecting block through a universal structure; the elastic pieces are positioned between the connecting block and the touch pressure head and surround the outer side of the universal structure; the universal structure comprises a spherical bulge and a spherical groove cavity correspondingly matched with the spherical bulge; the end part of the spherical bulge is positioned in the spherical groove cavity, and a displacement cavity is arranged between the end part of the spherical bulge and the bottom end surface of the spherical groove cavity; the displacement cavity is configured to include a travel distance for the touch pressure head to move towards the direction close to the connecting block. The utility model discloses all leave out the adjustment space on two dimension directions of touch-control pressure head to guarantee can laminate completely between touch-control pressure head and product touch-control surface, improve the accuracy of test result.

Description

Touch-control type detection pressure head

Technical Field

The utility model relates to a display module assembly detects technical field. And more particularly, to a touch sensing indenter.

Background

With the development of science and technology and the increase of the use requirements of people, the display product with single-point touch is difficult to meet the use requirements of people. Therefore, a multi-point simultaneous touch product comes into operation. The multi-point touch product needs to identify touch information of multiple point locations at the same time, and before assembly, a multi-point touch test needs to be performed on the touch screen.

In the multi-touch detection, a product (a touch display module) is placed on a carrier, the touch display module is connected, and then a detection mechanism having a plurality of touch pressure heads is moved toward the display module until a touch surface of the touch display module is touched. Because the bottom surface of the touch pressure head is a plane, when the touch pressure head moves towards the touch surface of the display module, if the bottom surface of the touch pressure head is not parallel to the touch surface of the display module, an oblique angle is formed between the contact surface of the touch pressure head and the touch surface of the display module, so that the touch pressure head cannot be in good contact with the touch surface of the display module, and the problems of difficult test or inaccurate test, even product crushing and the like are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure head is detected to touch-control formula to guarantee touch-control pressure head and touch-sensitive screen good contact, improve the accuracy of test result.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a touch-control type detects pressure head, it includes to detect the pressure head:

connecting blocks;

the touch pressure head is connected with the connecting block through a universal structure; and

the elastic pieces are positioned between the connecting block and the touch pressure head and surround the outer side of the universal structure;

the gimbal structure includes:

the spherical groove cavity is correspondingly matched with the spherical bulge;

the end part of the spherical bulge is positioned in the spherical groove cavity, and a displacement cavity is arranged between the end part of the spherical bulge and the bottom end surface of the spherical groove cavity;

the displacement cavity is configured to include a travel distance for the touch pressure head to move towards a direction close to the connecting block.

In addition, preferably, when the elastic element is in an uncompressed state, a spacing distance is formed between the connecting block and the touch pressure head; the separation distance is no greater than the maximum travel distance that the displacement chamber can provide.

In addition, preferably, the detection pressure head further comprises at least two step screws, and the step screws are located between the connecting block and the touch pressure head; any one step screw is positioned between two adjacent elastic pieces.

In addition, the preferred scheme is that the first end of step screw with the touch-control pressure head is connected fixedly, and the second end activity is worn to locate on the connecting block, includes on the second end of this step screw that to be used for with the flange portion that the connecting block cooperation is fixed.

In addition, preferably, the connecting block comprises a through hole for a step screw to pass through; and a spacing space for the step screw to deflect in the axial direction is arranged between the inner wall of the through hole and the surface of the outer wall of the step screw.

In addition, preferably, a plurality of the elastic members are centrosymmetric relative to the axis of the touch pressure head;

or the elastic pieces are uniformly arranged along the circumferential direction of the touch pressure head.

In addition, preferably, the detection pressure head further comprises a connecting rod, and the connecting rod is located on one side of the connecting block, which is away from the touch pressure head;

the axis of the connecting rod is arranged along the crimping direction of the touch pressure head.

Furthermore, it is preferable that the urging direction of the elastic member is along the pressing direction of the touch indenter.

In addition, preferably, the universal structure is located at the center of the touch indenter.

In addition, preferably, the spherical protrusions are formed on the bottom surface of the connecting block, and the spherical groove cavities are formed on the top surface of the touch pressure head;

or the spherical bulge is formed on the top surface of the touch pressure head, and the spherical groove cavity is formed on the bottom surface of the connecting block.

The utility model has the advantages as follows:

in the multiple spot touch-control detects, when the product touch-control surface becomes non-vertically inclined position with the detection pressure head, the utility model provides a detect the pressure head and utilize all displacement chambeies that include between the bottom surface of spherical bellied tip and spherical vallecular cavity, can provide self-adaptation adjustment space simultaneously for detecting the pressure head on the direction of motion of touch-control pressure head and the contact surface place direction of touch-control pressure head, promptly all leave the adjustment space on two dimensions directions of touch-control pressure head to when guaranteeing that the touch-control pressure head pushes down, can laminate completely between touch-control pressure head and product touch-control surface, can not appear because work of work precision error and universal structure wearing and tearing, the condition of the product is hindered to the touch-control pressure head appearance jamming.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 shows the overall structure schematic diagram of the detection indenter provided by the present invention.

Fig. 2 shows an assembly schematic diagram of the detection indenter provided by the present invention.

Fig. 3 shows the utility model provides a structural section of detecting pressure head.

Fig. 4 shows a schematic diagram of a state when the detection indenter is vertically pressed against the product.

Fig. 5 shows a schematic diagram of a state when detecting a non-perpendicular pressure joint between a pressure head and a product.

Fig. 6 is a schematic diagram illustrating a state of a conventional touch detection indenter when the indenter is not vertically pressed against a product.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It can be known, because the product (for example touch display module assembly) of multiple spot touch-control is the capacitive screen usually, and the capacitive screen adopts the principle of electrostatic induction to produce touch reaction, consequently, usually the touch-control pressure head is made by conductive metal, or has plated a layer of conductive metal at the contact surface of touch-control pressure head, for example copper, gold etc. simultaneously, to the touch-control pressure head circular telegram, make it can produce touch reaction when contacting display module assembly. For solving the defect that prior art exists, the utility model provides a touch-control type detects pressure head, it is shown at first to combine fig. 1 to fig. 3, specifically, it includes to detect the pressure head: the touch control device comprises a connecting block 1, a touch control pressure head 2 connected with the connecting block 1 through a universal structure, and a plurality of elastic pieces 3 positioned between the connecting block 1 and the touch control pressure head 2, wherein the elastic pieces 3 surround the outer side of the universal structure; the touch pressure head 2 is located below the connecting block 1, and the acting force direction of the elastic piece 3 is along the crimping direction of the touch pressure head 2.

The universal structure comprises a spherical bulge 4 and a spherical groove cavity 5 correspondingly matched with the spherical bulge 4; the tip of spherical arch 4 is located in spherical vallecular cavity 5, among this technical scheme, connect through universal structural connection between connecting block 1 and the touch-control pressure head 2, so set up when the contact surface of touch-control pressure head 2 is not on a parallel with the product and carry out the crimping and detect, for example when touch-control pressure head 2 pushes down the product under the tilt state, the angle when the contact surface of touch-control pressure head 2 and product contact can be finely tuned under the effect of elastic component 3 to prevent to produce the hard contact between touch-control pressure head 2 and the product and cause the damage to the product. And under the effect of elastic component 3 after detecting the completion, can provide reset ability for the position of touch-control pressure head 2 for connecting block 1, ensure touch-control pressure head 2 reset effect and the initial horizontal degree under changeing the state. It should be noted that the universal structure described in this embodiment is similar to the principle of a universal joint, and the product includes, but is not limited to, a touch display module.

The existing touch detection pressure head structure is influenced by precision errors of processed products and abrasion of a universal structure, the touch pressure head is prone to poor jamming, at the initial detection stage, the contact surface of the touch pressure head is just contacted with the touch surface of a product and is influenced by jamming of the universal structure, and if the condition that the contact surface of the touch pressure head is not contacted and completely attached to the touch surface of the product exists, the product is extremely prone to being crushed by pressing the touch pressure head continuously at the moment.

In the detecting indenter structure provided by the present invention, as shown in fig. 3, a displacement cavity 6 is included between the end of the spherical protrusion 4 and the bottom end surface of the spherical cavity 5; the displacement cavity 6 is configured to include a travel distance for the touch ram 2 to move in a direction approaching the connection block 1. Utilize displacement chamber 6 that all include between the tip of spherical arch 4 and the bottom surface of spherical groove cavity 5 can be for touch pressure head 2 to the stroke distance that the direction removal of being close to connecting block 1 provided, utilize this stroke distance, can for touch pressure head 2 all reserves the adjustment space on two dimensions direction, specifically, when product touch surface becomes non-vertically slope crimping state with the detection pressure head, touch pressure head 2 and product touch surface initial stage when contacting, through the cooperation between displacement chamber 6 and elastic component 3, can provide certain self-adaptation's adjustment space for touch pressure head 2 and the complete laminating of product touch surface when touch pressure head 2 pushes down, along with the gradual push down of touch pressure head 2, the cooperation angle of the complete laminating of touch pressure head surface with the product can be sought automatically to the contact surface of touch pressure head 2 under the effect of elastic component 3. In addition, by utilizing the travel distance provided by the displacement cavity 6, the elastic element 3 can provide a downward pressure for the touch pressure head 2 within the travel distance, so as to ensure that the contact surface of the touch pressure head 2 is stably and completely attached to the touch surface of the product.

In a preferred embodiment, in order to protect a product and avoid damage to the product caused by excessive pressing of the touch pressure head 2, a spacing distance is provided between the connecting block 1 and the touch pressure head 2 when the elastic member 3 is in an uncompressed state; this spacing distance is not greater than the maximum travel distance that the displacement chamber 6 can provide. Thereby guarantee that touch-control pressure head 2 can remain the reaction force that receives elastic component 3 throughout in the specified stroke of pushing down.

In one embodiment, the detection pressure head further includes at least two step screws 7, and the step screws 7 are located between the connection block 1 and the touch pressure head 2; any one of the step screws 7 is positioned between two adjacent elastic members 3. It should be noted that, if the connection state is maintained between the connection block 1 and the touch pressure head 2 only through the elastic member 3, under the action of gravity of the touch pressure head 2, the elastic member 3 is always in a stretching state, which brings loss to the performance of the elastic member 3 itself, and the connection between the touch pressure head 2 and the connection block 1 is unreliable. In addition, compare in the technical scheme that the elastic component cover was established at the step screw, this scheme step screw 7 is located between two adjacent elastic components 3, mutually noninterfere between step screw 7 and the elastic component 3, has overcome the restriction influence of step screw to the elastic component, has increased the adjustment range that the elastic component was suitable for.

In the embodiment, as shown in the figure, the detection pressure head includes two step screws 7, and the two step screws 7 are centrosymmetric with respect to the axis of the touch pressure head 2. In other embodiments, the detection indenter may further include three or more step screws, and when three step screws are provided, the three step screws are arranged in an equilateral triangle on a horizontal plane. When setting up four step screws, four step screws are the quadrangle setting on the horizontal plane to this analogizes, the utility model discloses do not restrict to this.

As shown in fig. 2, a first end of the step screw 7 is fixedly connected to the touch pressure head 2, a second end of the step screw 7 movably penetrates through the connecting block 1, and a flange portion 71 for being fixed to the connecting block 1 in a matching manner is included at the second end of the step screw 7. In the present embodiment, the first end is a bottom end of the stepped screw 7, the second end is a top end of the stepped screw 7, and the flange portion 71 is formed at the top end of the stepped screw 7. The connecting block 1 comprises a through hole for a step screw 7 to pass through; and a spacing space for the step screw 7 to deflect in the axial direction is arranged between the inner wall of the through hole and the surface of the outer wall of the step screw 7. The spacing space enables the touch pressure head 2 to have a good movement trend relative to the connecting block 1, and the maximum deflection angle of the touch pressure head 2 relative to the horizontal plane can be limited by controlling the width distance of the spacing space.

Simultaneously, because the even arrangement of elastic component, can provide the direction in the crimping direction for the touch pressure head, consequently can increase the interval space distance between step screw and the through-hole as far as, the step screw can play the effect of connecting the location to can not appear the bite problem because of the direction.

Optionally, a plurality of the elastic members 3 are centrosymmetric with respect to the axis of the touch indenter 2; or, a plurality of the elastic members 3 are uniformly arranged along the circumferential direction of the touch pressure head 2. Specifically, when the number of the elastic members included in the detection indenter is an even number, such as two, four, six, etc., the plurality of elastic members may be centrosymmetric with respect to the axis of the touch indenter. When the number of the elastic pieces is odd numbers such as three, five, seven and the like, the elastic pieces can be uniformly arranged along the circumferential direction of the touch pressure head. In this embodiment, the detection pressure head includes four elastic members, and the four elastic members are centrosymmetric with respect to the axis of the touch pressure head.

In one embodiment, as shown in the figure, the detection pressure head further includes a connecting rod 8, and the connecting rod 8 is located on a side of the connecting block 1 facing away from the touch pressure head 2; the axis of the connecting rod 8 is arranged along the crimping direction of the touch pressure head 2. Connecting rod 8 can assemble connecting block 1 and touch-control pressure head 2 to check out test set as middle connecting piece and detect in order to realize carrying out touch-control formula crimping to the product. In order to ensure the fitting degree and the stress uniformity between the contact surface of the touch pressure head 2 and the touch surface of the product, the universal structure is positioned in the central position of the touch pressure head 2.

In this embodiment, the spherical protrusion 4 is formed on the bottom surface of the connecting block 1, and correspondingly matched with the spherical protrusion 4, the spherical groove cavity 5 is formed on the top surface of the touch pressure head 2. In other alternative embodiments, the spherical protrusion may also be formed on the top surface of the touch pressure head, and the spherical groove cavity is formed on the bottom surface of the connection block and correspondingly matched with the spherical protrusion.

As shown in fig. 6, fig. 6 is a schematic diagram illustrating a state of a conventional touch detection indenter when the indenter is not vertically pressed against a product. When the touch indenter 10 ' is not vertically pressed against the product due to the clamping effect of the universal structure or the elastic member, the contact area 100 ' and the non-contact area 101 ' formed at the edge are included between the contact surface of the touch indenter 10 ' and the touch surface of the product 20 ', and in order to form a complete contact and fit state between the touch indenter and the product, if the touch indenter 10 ' is continuously pressed, the pressure F applied to the touch surface of the product 20 by the contact surface of the touch indenter 10 ' at the contact area 100 ' will significantly increase the pressure to damage the product as the touch indenter 10 ' is further pressed.

The utility model provides an among the technical scheme, combine figure 4 to show, figure 4 shows the utility model provides a state schematic diagram when detecting pressure head 2 and the perpendicular crimping of product. When the product is parallel under the horizontality, between the touch surface of touch-control pressure head 2 and product, when detecting the pressure head and pushing down, can form perfect crimping laminating state between the touch surface of touch-control pressure head 2 and product.

Referring to fig. 5, fig. 5 is a schematic diagram of a state of the detection indenter and a product when the detection indenter is not vertically pressed. When the product 10 is horizontally deviated, the contact surface of the touch pressure head 2 and the touch surface of the product 10 are parallel, when the pressing head is pressed down, by utilizing the displacement cavity 6 between the end part of the spherical bulge 4 and the bottom end surface of the spherical groove cavity 5, the displacement cavity 6 can provide a travel distance for the touch pressing head 2 to move towards the direction close to the connecting block 1, and by utilizing the travel distance, an adjusting space can be reserved for the touch pressure head 2 in two dimension directions, when the touch pressure head 2 is initially contacted with the touch surface of the product 10, through the matching between the displacement cavity 6 and the elastic piece 3, can provide a certain self-adaptive adjusting space for the complete fit of the touch pressure head 2 and the touch surface of the product 10 when the touch pressure head is pressed down, and along with the gradual pressing down of the touch pressure head 2, the contact surface of the touch indenter 2 automatically searches for a matching angle completely attached to the touch surface of the product 10 under the action of the elastic element 3. And the elastic piece 3 can provide a downward pressure for the touch pressure head 2 within the travel distance by utilizing the travel distance provided by the displacement cavity 6, so as to ensure that the contact surface of the touch pressure head 2 is stably and completely attached to the touch surface of the product 10. Therefore, the situation that the touch pressure head is jammed and harms the product due to the precision error of a processed product and the abrasion of a universal structure or an elastic piece is avoided.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.

Claims

1. The utility model provides a touch-control formula detects pressure head which characterized in that, it includes to detect the pressure head:

connecting blocks;

the gimbal structure includes:

2. The touch sensing indenter of claim 1, wherein the connection block is spaced from the touch indenter when the resilient member is not compressed; the separation distance is no greater than the maximum travel distance that the displacement chamber can provide.

3. The touch-sensing pressure head according to claim 1, wherein the pressure head further comprises at least two step screws, and the step screws are located between the connecting block and the touch-sensing pressure head; any one step screw is positioned between two adjacent elastic pieces.

4. The touch detection indenter of claim 3, wherein a first end of the step screw is fixedly connected to the touch indenter, a second end of the step screw movably penetrates through the connecting block, and a flange portion for being fixed to the connecting block in a matching manner is included on the second end of the step screw.

5. The touch detection indenter of claim 3, wherein the connection block includes a through hole for a step screw to pass through; and a spacing space for the step screw to deflect in the axial direction is arranged between the inner wall of the through hole and the surface of the outer wall of the step screw.

6. The touch sensing indenter of claim 1, wherein the plurality of elastic members are centrosymmetric with respect to an axis of the touch indenter;

7. The touch-sensing indenter of claim 1, wherein the indenter further comprises a connecting rod, and the connecting rod is located on a side of the connecting rod facing away from the indenter;

8. The touch sensing indenter of claim 1, wherein the force direction of the elastic member is along the pressing direction of the touch indenter.

9. The touch sensing indenter of claim 1, wherein the gimbal is located at a center of the touch indenter.

10. The touch-sensitive detection indenter of claim 1, wherein the spherical protrusion is formed on a bottom surface of the connection block, and the spherical groove cavity is formed on a top surface of the touch-sensitive indenter;