CN221103792U - Self-locking connection mechanism and digital electroencephalograph - Google Patents

Abstract

The utility model relates to the technical field of connecting structures, in particular to a self-locking connecting mechanism and a digital electroencephalograph. When the first shell and the second shell are close to each other, the self-locking connecting mechanism is clamped into the pin groove along the slope through the pin and drives the sliding block to slide perpendicular to the assembling direction, so that the elastic piece deforms perpendicular to the assembling direction, and when the pin is clamped into the pin groove, the elastic piece rebounds to tightly push the pin in the pin groove to complete self-locking. The moving direction of the first shell and the second shell when assembled is vertical to the moving direction of the spring, and the deformation distance of the first shell and the second shell is parallel to the connected shell, so that the self-locking mechanism occupies a small thickness on the component shell, the self-locking connection of two components with small space is satisfied, and the application range is greatly increased.

Description

Self-locking connection mechanism and digital electroencephalograph

Technical Field

The utility model relates to the technical field of connecting structures, in particular to a self-locking connecting mechanism and a digital electroencephalograph.

Background

In the related art, in order to achieve locking and detachable assembly between two components, a latch hook is generally driven to move to a latch groove by a spring, so that the moving direction of the two components is generally parallel to the moving direction of the spring during assembly. For example, patent CN218631765U discloses a self-locking mechanism, including holding the reed, setting up the latch hook on holding the reed, through setting up heart locking piece on the guide arm, offer the locked groove on heart locking piece, set up the sliding chamber with heart locking piece adaptation on the base, when the casing is installed on the base, drive the latch hook through the reed along vertical direction and catch on the locked groove realization self-locking. Obviously, the mode that two parts are assembled and are parallel to the motion direction of the spring needs to keep a certain spring deformation distance in the assembly motion direction, and the method is only suitable for connecting columnar or longer parts, and the lock hook is easy to loosen.

Disclosure of utility model

The utility model aims to provide a self-locking connecting mechanism and a digital electroencephalograph, and the problem that a gap required by assembling two parts is overlarge is solved by arranging that the moving direction of a first shell and a second shell during assembling is perpendicular to the moving direction of a spring.

In order to solve the above technical problems, the present utility model provides a self-locking connection mechanism, comprising: the sliding block is arranged on the inner side of the first shell in a sliding way through the elastic piece; the pin is fixed on the sliding block and faces the first shell; the lock hook is positioned on the second shell, and the front end of the lock hook is inserted into the inner side of the first shell; the pin groove is positioned at the front end of the lock hook and is axially parallel to the pin; a ramp located at an opening edge of the pin slot; when the first shell and the second shell are close to each other, the pin is clamped into the pin groove along the slope and drives the sliding block to slide along the direction perpendicular to the direction in which the first shell and the second shell are close to each other, so that the elastic piece is deformed; when the pin is clamped into the pin groove, the elastic piece rebounds to tightly prop the pin in the pin groove so as to realize self-locking of the first shell and the second shell.

Further, a slider groove is provided on the inner side of the first housing to accommodate sliding of the slider along the inner side of the first housing.

Further, the sliding block is provided with a lock hook hole for accommodating the pin; the front end of the latch hook is inserted into the latch hook hole so that the pin is clamped into the pin groove.

Further, the sliding block groove is vertically arranged along the inner side of the first shell; the two ends of the elastic piece are respectively connected with the bottom of the sliding block and the bottom of the sliding block groove; the pin is horizontally fixed in the lock hook hole.

Further, the self-locking connecting mechanism also comprises a key; the key is fixed at the top of the sliding block, and the top of the key is exposed out of the outer side of the first shell; when the key is pressed, the sliding block drives the pin to move out of the pin groove and deform the elastic piece, and when the key is loosened, the pin slides out along a slope through rebound of the elastic piece, so that unlocking of the first shell and the second shell is realized.

Further, a key opening communicated with the top of the sliding block groove is formed in the top of the first shell so as to accommodate movement of the key in the vertical direction.

Further, the self-locking connection mechanism also includes a slider mounting piece, including: a plurality of screws fixedly mounted on the first housing; the waist-shaped screw holes are arranged on the sliding block; wherein, the screw is movable one by one and passes waist shape screw hole.

Further, the screw includes: the screw head, the first screw rod and the second screw rod are connected in sequence; wherein the second screw is fixed with the first shell; the first screw slides in the kidney-shaped screw hole, and the diameter of the screw head is larger than the width of the kidney-shaped screw hole.

The present utility model also provides a digital electroencephalograph comprising: the probe comprises a head box, a first shell, a probe, a second shell and a self-locking connecting mechanism, wherein the first shell is positioned outside the head box; when the head box is close to the probe, the first shell and the second shell self-lock or unlock the head box and the probe through the self-locking connecting mechanism.

The utility model has the beneficial effects that:

Through setting up slope and the pin groove of latch hook front end, realize that first shell and second shell are close to when assembling, the pin is gone into in the pin groove along the slope card and is driven the slider and slide in the assembly direction perpendicularly to make the elastic component produce the deformation of perpendicular to assembly direction, after the pin card was gone into the pin groove, the elastic component rebound tightly pushed up the pin and accomplish the auto-lock in the pin groove. According to the utility model, the moving direction of the first shell and the second shell is vertical to the moving direction of the spring during assembly, namely, the moving direction of the spring is parallel to the connected shells, and the deformation distance of the spring is parallel to the connected shells, so that the self-locking mechanism occupies only a small thickness on the component shells, the self-locking connection of two components with smaller space is satisfied, and the application range is greatly increased.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of a first housing of a self-locking connection mechanism of the present utility model;

FIG. 2 is a side cross-sectional view of the self-locking connection of the present utility model when the first housing is unlocked from the second housing;

FIG. 3 is a side cross-sectional view of the self-locking connection of the present utility model with the first housing self-locking with the second housing;

FIG. 4 is a schematic view of the first housing of the self-locking connection mechanism of the present utility model when a key is pressed;

FIG. 5 is a schematic view of the first housing of the self-locking attachment mechanism of the present utility model when the key is released;

FIG. 6 is a schematic diagram of the structure of a head box of the digital electroencephalograph of the present utility model;

Fig. 7 is a schematic structural view of a probe of the digital electroencephalograph according to the present utility model.

Icon:

1-a first shell, 11-a sliding block groove, 12-an elastic piece and 13-a key opening;

2-second housing, 21-latch hook, 211-ramp, 212-pin slot;

3-sliding blocks, 31-lock hook holes, 311-pins, 32-keys and 33-kidney-shaped screw holes;

4-screw, 41-screw head, 42-first screw, 43-second screw.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present utility model provides a self-locking connection mechanism, as shown in fig. 1 to 5, the self-locking connection mechanism of the present utility model includes: a slider 3 slidably disposed inside the first housing 1 through an elastic member 12; a pin 311 fixed to the slider 3 and facing the first housing 1; the latch hook 21 is located on the second housing 2, and its front end is inserted into the inside of the first housing 1. Wherein, latch hook 21 includes: a pin groove 212 located at the front end of the latch hook 21 and axially parallel to the pin 311; a ramp 211 located at the edge of the opening of the pin slot 212. Specifically, referring to fig. 2, when the first housing 1 and the second housing 2 are assembled, the first housing 1 and the second housing 2 may be manually or mechanically moved closer to each other in the left-right direction in fig. 2, and the pin 311 abuts against the slope 211 and slides down the slope 211 to the opening edge of the pin slot 212, and then is snapped into the pin slot 212, in which process, the pin 311 drives the slider 3 to slide in a direction perpendicular to the direction in which the first housing 1 and the second housing 2 are moved closer to each other (i.e., in a direction vertically downward in fig. 2), so that the elastic member 12 generates deformation and rebound force. Referring to fig. 3, after the pin 311 is snapped into the pin slot 212, the first housing 1 and the second housing 2 are released, and the elastic member 12 makes the pin 311 move upward and tightly push against the pin slot 212 by a repulsive force, so as to realize self-locking of the first housing 1 and the second housing 2.

As an alternative embodiment of the slider.

As shown in fig. 5, both ends of the elastic member 12 are connected to the bottom of the slider 3 and the bottom of the slider groove 11, respectively, in the vertical direction to slidably dispose the slider 3 inside the first housing 1. Alternatively, the elastic member 12 is a spring with a certain rigidity, and when the elastic member 12 is not compressed by force, the sliding block 3 thereon is supported and kept stationary and does not fall, or the elastic member 12 is compressed to a certain extent by the gravity of the sliding block 3, but is kept stationary after being compressed to the equilibrium position.

Preferably, as shown in fig. 1, the slider groove 11 is vertically provided along the inner side of the first housing 1, and its thickness matches the thickness of the slider 3, and its vertical height is not less than the sum of the height of the slider 3 and the length of the elastic member 12 in a normal state, so as to accommodate stable sliding of the slider 3 along the inner side of the first housing 1 in the vertical direction. In this embodiment, when the slider 3 moves downward under force, referring to fig. 4, the elastic member 12 is compressed, and the bottom of the slider 3 abuts against the elastic member 12 and approaches the lower edge of the slider groove 11; when the slider 3 is not stressed, referring to fig. 5, the elastic member 12 returns to the normal state, the slider 3 is rebounded upwards along the slider groove 11 to the top of the slider groove 11 and is abutted against the upper edge of the slider groove 11, and the slider 3 thereon is supported and kept stationary and does not fall due to the rigidity of the elastic member 12 itself.

Optionally, as shown in fig. 1, the sliding block 3 of the present embodiment is further provided with a flange parallel to the first housing 1 and protruding horizontally, so as to accommodate the device connection port. The slider groove 11 is also provided with a corresponding protruding portion, and the height of the protruding portion is not less than the sum of the height of the flange and the length of the elastic member 12 in a normal state, so as to accommodate the sliding of the slider 3, and the sliding is limited by the upper edge and the lower edge of the protruding portion when the slider 3 moves up and down, so that the sliding is more stable, the compression distance of the elastic member 12 is limited, and excessive deformation is prevented.

Preferably, with continued reference to fig. 1, the slider 3 is provided with a latch hook hole 31, the latch hook hole 31 is just sized to accommodate insertion of the front end of the latch hook 21 into the latch hook hole 31, and a horizontally fixed cylindrical pin 311 is disposed in the latch hook hole 31 for being snapped into the pin slot 212. Alternatively, the latch hook hole 31 may be a through hole or a slot with an opening facing the first housing 1, and the pin 311 faces the first housing 1, and a hole corresponding to the latch hook hole 31 is formed on the first housing 1, so that the latch hook 21 can be snapped into the latch hook hole 31 through the first housing 1.

As an alternative embodiment of the slider mount.

In this case, the slider 3 may be slidably disposed inside the first housing by a slider mount. Referring to fig. 1, the slider mounting member includes a plurality of kidney-shaped screw holes 33 formed in the slider 3, and a plurality of screws 4 fixedly mounted on the first housing 1 and corresponding to the kidney-shaped screw holes 33 one by one, wherein the screws 4 movably pass through the kidney-shaped screw holes 33. Specifically, the hole shape of the kidney-shaped screw hole 33 is a kidney shape with a long side parallel to the sliding direction of the sliding block 3, or may be a drop shape, an ellipse shape, a rectangle shape, etc. to accommodate the movable space of the screw 4 when the sliding block 3 slides; every two kidney-shaped screw holes 33 are a group which is symmetrically arranged left and right along the central line of the vertical direction of the sliding block 3, at least one group is arranged, and referring to fig. 1, three groups which are vertically arranged along the vertical direction of the sliding block 3 are arranged, namely six kidney-shaped screw holes 33 and corresponding screws 4, so that the connection stability of the sliding block 3 and the first shell 1 is improved; the screw 4 includes a screw head 41, a first screw rod 42, and a second screw rod 43 connected in sequence, the diameter of the screw head 41 is larger than the width of the short side of the kidney-shaped screw hole 33, the length of the first screw rod 42 is equal to the depth of the kidney-shaped screw hole 33, and the matching manner of the slider mounting member and the self-locking connection mechanism is described in detail below.

Optionally, with continued reference to fig. 1, the kidney-shaped screw hole 33 faces the first housing 1, and a kidney-shaped screw head limiting hole with a hole depth not smaller than the thickness of the screw head 41 is further provided at a side of the slider 3 facing away from the first housing 1. The mounting mode of the screw 4 is that the second screw 43 and the first screw 42 sequentially pass through the kidney-shaped screw hole 33 on the sliding block 3 along the direction perpendicular to the hole surface of the screw hole, then the second screw 43 and the first shell 1 are fixed, the first screw 42 is just positioned in the kidney-shaped screw hole 33, and the screw head 41 is abutted outside the kidney-shaped screw hole 33 and positioned in the screw head limiting hole. When the slider 3 slides, the kidney-shaped screw hole 33 moves relative to the first screw 42, and the screw head limiting hole moves relative to the screw head 41. Specifically, as shown in fig. 4, when the slider 3 moves to the bottom of the slider groove 11, the first screw rod 42 is propped against the upper edge of the kidney-shaped screw hole 33, and the screw head 41 is propped against the upper edge of the screw head limiting hole, as shown in fig. 5, when the slider 3 moves to the top of the slider groove 11, the first screw rod 42 is propped against the lower edge of the kidney-shaped screw hole 33, and the screw head 41 is propped against the lower edge of the screw head limiting hole, so that the deformation distance of the elastic member 12 is further limited, and meanwhile, the flange surface of the screw head 41 is propped against the outer side of the kidney-shaped screw hole 33, so that the slider 3 is always in the vertical direction and does not shake towards each angle in the relative movement process, the damage of the elastic member 12 and the friction between the slider 3 and the first housing 1 are reduced, and the self-locking and unlocking are smoother.

As an alternative embodiment of the latch hook.

As shown in fig. 7, the latch hook 21 is fixed to the second housing 2 with its front end for insertion into the latch hook hole 31 of the first housing 1. Wherein, the front end of the latch hook 21 is provided with a pin groove 212 axially parallel to the pin 311 to accommodate the pin 311, and a slope 211 at an opening edge of the pin groove 212. The foremost end of the latch hook 21 is set as a top (leftmost end in fig. 7) of the ramp 211, and the lower side (bottommost end in fig. 7) of the foremost end of the latch hook 21 is set as a pin groove 212, i.e., the other end of the ramp 211 is a bottom of the ramp, between which the ramp 211 is formed, the bottom of the ramp 211 being connected with an opening edge of the pin groove 212. In this embodiment, referring to fig. 2, when the latch hook 21 is aligned to the latch hook hole 31, the vertical position of the pin 311 is higher than the slope bottom, when the first housing 1 and the second housing 2 are close to each other, pressure is generated, the pin 311 is pressed against the slope top of the slope 211, because the latch hook 21 is fixed, the pin 311 slides down along the slope surface of the slope 211 to the slope bottom and enters into the pin slot 212, the process drives the slider 3 to compress the elastic member 12 to move down, as shown in fig. 3, wherein the compression degree of the elastic member 12 reaches the maximum value in the process when the pin 311 passes through the slope bottom position, the first housing 1 and the second housing 2 are released, the elastic member 12 rebounds after the pin 311 enters into the pin slot 212, the pin 311 is pressed up into the pin slot 212, the latch hook 21 is positioned in the latch hook hole 31, and the elastic member 12 returns to the normal state, and the self-locking of the first housing 1 and the second housing 2 is completed.

As an alternative embodiment of the key.

Referring to fig. 4 and 5, the top of the slider 3 is provided with a key 32 for directly applying pressure to the self-locking connection mechanism by the hand when the first and second housings 1 and 2 are unlocked, the key 32 is fixed with the slider 3 to achieve simultaneous movement, the top of the first housing 1 is provided with a key opening 13 communicating with the top of the slider groove 11 to accommodate movement of the key 32 in the vertical direction, and the top of the key 32 is exposed to the outside of the first housing 1 to be pressed. Referring to fig. 3 and 4, when the key 32 is pressed, the slider 3 moves downward along the slider groove 11 and compresses the elastic member 12, and drives the pin 311 on the slider 3 to disengage from the pin groove 212 downward; referring to fig. 2 and 5, when the key 32 is released, the elastic member 12 rebounds to move the slider 3 upwards, so as to drive the pin 311 to slide out along the slope 211 from the slope bottom of the slope 211, i.e. the latch hook 21 is separated from the latch hook hole 31, thereby unlocking the first housing 1 and the second housing 2. The pressing direction of the key 32 is consistent with the deformation direction of the elastic piece 12, so that force is conveniently applied, the pressure can be conducted to the elastic piece 12 through the sliding block 3, and then the elastic piece 12 is bounced to assist unlocking, so that the process is labor-saving and convenient.

Further, in the present case, the specific process of realizing self-locking or unlocking by the self-locking connection mechanism is as follows:

Referring to fig. 2 and 3, the first housing 1 and the second housing 2 are self-locked in the vertical direction in the following manner: the first shell 1 provided with the sliding block 3 and the sliding block mounting piece and the second shell 2 provided with the locking hook 21 are horizontally close to each other to generate pressure, the pin 311 slides along the slope surface from the slope top of the slope 211 under the pressure and drives the sliding block 3 to compress the elastic piece 12 until the sliding block 3 reaches the bottom of the sliding block groove 11, finally the pin 311 slides across the slope bottom and is tightly pressed in the pin groove 212 along with the rebound of the elastic piece 12, the locking hook 21 is clamped in the locking hook hole 31, the elastic piece 12 is restored to the normal state, the sliding block 3 returns to the top of the sliding block groove 11, and the self-locking is completed.

Referring to fig. 4 and 5, the first housing 1 and the second housing 2 are unlocked in the vertical direction in the following manner: the key 32 is vertically pressed, the sliding block 3 moves downwards along the sliding block groove 11 and compresses the elastic piece 12, and meanwhile, the pin 311 on the sliding block 3 is driven to be separated from the pin groove 212 downwards; then the key 32 is released, the elastic piece 12 rebounds to enable the sliding block 3 to move upwards, the pin 311 is driven to slide out along the slope surface of the slope 211 from the slope bottom of the slope 211, the lock hook 21 is separated from the lock hook hole 31, the elastic piece 12 is restored to the normal state, the sliding block 3 returns to the top of the sliding block groove 11, and the unlocking is completed.

For convenience of description, the embodiment is only illustrated in the vertical direction shown in fig. 2 and 3, and in actual operation, since the sliding block 3 is limited in the sliding block groove 11 and two ends of the elastic member 12 are fixedly connected with the sliding block 3 and the sliding block groove 11, the device with the self-locking connection mechanism of the utility model does not affect the assembly of the two shells perpendicular to the moving direction of the elastic member 12 to complete self-locking and the pressing of the key 32 parallel to the moving direction of the elastic member 12 to complete unlocking under any angle or direction.

Alternatively, as shown in fig. 6 and 7, the present utility model provides a digital electroencephalograph including: the probe comprises a head box, a first shell 1 positioned outside the head box, a probe, a second shell 2 positioned outside the probe and a self-locking connecting mechanism; when the head box is close to the probe, the first shell 1 and the second shell 2 self-lock or unlock the head box and the probe through the self-locking connecting mechanism. The utility model is suitable for connecting any part capable of accommodating the thickness of the sliding block 3 with any part capable of installing the locking hook 21, the mechanism occupies small space, the self-locking connection of two parts with smaller space is satisfied, the application range is wide, the space is reduced, the electric connection is facilitated, the release is not easy after the self-locking, and the unlocking is convenient and quick.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (9)

1. A self-locking connection mechanism, comprising:

The sliding block is arranged on the inner side of the first shell in a sliding way through the elastic piece;

The pin is fixed on the sliding block and faces the first shell;

the lock hook is positioned on the second shell, and the front end of the lock hook is inserted into the inner side of the first shell;

the pin groove is positioned at the front end of the lock hook and is axially parallel to the pin;

a ramp located at an opening edge of the pin slot; wherein the method comprises the steps of

When the first shell and the second shell are close to each other, the pin is clamped into the pin groove along the slope and drives the sliding block to slide along the direction perpendicular to the direction in which the first shell and the second shell are close to each other, so that the elastic piece is deformed;

When the pin is clamped into the pin groove, the elastic piece rebounds to tightly prop the pin in the pin groove so as to realize self-locking of the first shell and the second shell.

2. The self-locking attachment mechanism of claim 1, wherein,

The inner side of the first shell is provided with a sliding block groove for accommodating the sliding block to slide along the inner side of the first shell.

3. The self-locking attachment mechanism of claim 2, wherein,

The sliding block is provided with a lock hook hole for accommodating the pin;

The front end of the latch hook is inserted into the latch hook hole so that the pin is clamped into the pin groove.

4. The self-locking attachment mechanism of claim 3, wherein,

The sliding block groove is vertically arranged along the inner side of the first shell;

the two ends of the elastic piece are respectively connected with the bottom of the sliding block and the bottom of the sliding block groove;

The pin is horizontally fixed in the lock hook hole.

5. The self-locking attachment mechanism of claim 4, further comprising a key;

the key is fixed at the top of the sliding block, and the top of the key is exposed out of the outer side of the first shell;

When the key is pressed, the sliding block drives the pin to move out of the pin groove and deform the elastic piece, and when the key is released, the pin slides out along the slope through rebound of the elastic piece, so that unlocking of the first shell and the second shell is realized.

6. The self-locking attachment mechanism of claim 5, wherein,

The top of the first shell is provided with a key opening communicated with the top of the sliding block groove so as to accommodate movement of the key in the vertical direction.

7. The self-locking connection of claim 1, further comprising a slider mount;

The slider mount includes:

a plurality of screws fixedly mounted on the first housing;

the waist-shaped screw holes are arranged on the sliding block; wherein the method comprises the steps of

The screws are movably penetrated through the kidney-shaped screw holes one by one.

8. The self-locking attachment mechanism of claim 7,

The screw includes: the screw head, the first screw rod and the second screw rod are connected in sequence; wherein the method comprises the steps of

The second screw is fixed with the first shell;

the first screw slides in the kidney-shaped screw hole, and

The diameter of the screw head is larger than the width of the kidney-shaped screw hole.

9. A digital electroencephalograph, comprising:

A head cartridge and a first housing located outside the head cartridge;

a probe and a second housing located outside the probe; and

A self-locking connection as claimed in any one of claims 1 to 8;

When the head box is close to the probe, the first shell and the second shell self-lock or unlock the head box and the probe through the self-locking connecting mechanism.