CN221094575U

CN221094575U - Protection switch and hair bulb trimmer

Info

Publication number: CN221094575U
Application number: CN202322912689.2U
Authority: CN
Inventors: 杜干平
Original assignee: Shenzhen Koala Mom Technology Co ltd
Current assignee: Shenzhen Koala Mom Technology Co ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-06-07
Anticipated expiration: 2033-10-27

Abstract

The utility model relates to the technical field of fabric treatment tools, in particular to a protection switch, which comprises a first elastic piece, a second elastic piece, a first switch, a second switch and a switch bracket; pushing the first switch towards the protrusion can press and bend the first elastic sheet downwards; the second switch is pushed upwards to press and bend the second elastic sheet upwards; the first elastic sheet and the second elastic sheet can be contacted with each other when being bent at the same time, and only one switch elastic sheet in the two can not be contacted with the other switch elastic sheet when being bent. The hair bulb trimmer also comprises a middle frame, a hair bulb bin, a knife head cover and the protection switch, wherein the hair bulb bin can be abutted with the first switch and push the first switch towards the protrusion when being installed; the cutter head cover can be abutted with the second switch and push the second switch upwards when being installed. The utility model can break the circuit when the cutter head cover or the hair bulb bin of the hair bulb trimmer falls off, thereby improving the use safety of the hair bulb trimmer.

Description

Protection switch and hair bulb trimmer

Technical Field

The utility model relates to the technical field of fabric treatment tools, in particular to a protection switch and a hair bulb trimmer.

Background

It is well known that there are some garments that are pilled up during use of the garment, and that the garment after pilling not only has a significantly reduced appearance value, but also affects the feel of the garment. So most of the time, people use the hair bulb trimming product.

A hair bulb trimmer is a common household appliance for removing hair bulbs from clothing, fabrics, etc. It is usually composed of a rotating blade and a protective net, which shears off the protruding fabric when the blade rotates, restoring the smoothness of the clothing. Although such electronic devices are convenient to use, safety issues need to be considered during use. For example, when the device falls down to enable the cutter head cover or the hair bulb bin to fall off, the device is still in a working state, so that great potential safety hazards are brought to a user.

Disclosure of utility model

Accordingly, it is an object of the present utility model to provide a protection switch that can open a circuit when a head cover or a hair bulb compartment of a hair bulb trimmer is detached, thereby improving the safety of the hair bulb trimmer.

Another object of the present utility model is to provide a hair bulb trimmer including the above-mentioned protection switch

In order to achieve the first object, the present utility model provides the following technical solutions:

A protection switch comprises a first elastic piece, a second elastic piece, a first switch, a second switch and a switch bracket;

The first elastic piece and the second elastic piece are respectively arranged at two ends of the switch bracket, and one ends of the first elastic piece and the second elastic piece, which are close to each other, are arranged at intervals up and down; the first elastic sheet is provided with an upward protrusion, the first switch is in sliding contact with one side of the protrusion, and the first switch is pushed towards the protrusion to press and bend the first elastic sheet downwards; the second switch is abutted to the bottom of the second elastic sheet, and the second switch is pushed upwards to press and bend the second elastic sheet upwards;

one end of the first elastic piece and one end of the second elastic piece, which are close to each other, can be contacted with each other when the first elastic piece and the second elastic piece are bent at the same time, and when only one switch elastic piece is bent, the switch elastic piece cannot be contacted with the other switch elastic piece.

According to the technical scheme, the first elastic piece and the second elastic piece are respectively connected with the positive electrode and the negative electrode of the power supply of the hair bulb trimmer, and the first switch and the second switch are respectively connected with the hair bulb bin and the cutter head cover of the hair bulb trimmer, so that the first switch can be respectively pushed towards the protrusion and the second switch can be pushed upwards when the hair bulb bin and the cutter head cover are installed, the first switch presses the first elastic piece downwards through extrusion protrusion, and the second switch moves upwards to press the second elastic piece. After the hair bulb bin and the cutter head cover are normally arranged on the hair bulb trimmer, the two elastic sheets are simultaneously bent, and one ends of the two elastic sheets, which are close to each other, can be contacted with each other, so that a circuit of the hair bulb trimmer is communicated, and the hair bulb trimmer works normally; when the hair bulb trimmer falls off to enable the cutter head cover or the hair bulb bin to fall off, as only one switch elastic piece is bent, the switch elastic piece cannot be contacted with the other switch elastic piece, so that a circuit of the hair bulb trimmer is disconnected, and damage to a user is avoided. Compared with the prior art, the utility model can break the circuit when the tool bit cover or the hair bulb bin of the hair bulb trimmer falls off, thereby improving the use safety of the hair bulb trimmer.

Alternatively, the first switch includes a movable lever and a spring; the movable rod is arranged in a transversely moving way, and one end of the movable rod is provided with a push block which is abutted with the protrusion; a guide column is arranged on one side surface of the push block, and the spring is sleeved on the guide column; one end of the spring is connected with the pushing block, and the other end of the spring is connected with the switch bracket.

Alternatively, the protrusion is triangular, and a chamfer abutting against an inclined plane of the protrusion is arranged at the bottom edge of the push block, and the inclination angles of the abutted chamfer and the inclined plane of the protrusion are the same.

As an alternative scheme, the push block is provided with a positioning block, the switch bracket is correspondingly provided with a positioning groove, and the positioning block is movably arranged in the positioning groove.

As an alternative scheme, the upper end of the second switch is convexly provided with a strip-shaped abutting part, and the abutting part abuts against the lower surface of the second elastic sheet.

As an alternative scheme, two fixing columns are fixedly arranged at two ends of the switch support respectively, and the first elastic sheet and the second elastic sheet are fixedly sleeved on the corresponding two fixing columns respectively.

In order to achieve the second object, the present utility model provides a hair bulb trimmer comprising a middle frame, and a hair bulb bin and a cutter head cover which are respectively detachably arranged at two ends of the middle frame; in addition, the protective switch is arranged in the middle frame; the hair bulb bin can be abutted with the first switch and push the first switch towards the protrusion when being installed; the cutter head cover can be abutted with the second switch and push the second switch upwards when being installed.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a protection switch according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a protection switch according to the embodiment of FIG. 1;

Fig. 3 is a perspective sectional view of a hair bulb trimmer in a closed state of a protection switch according to an embodiment of the present utility model.

Reference numerals: 1. a first elastic sheet; 11. a protrusion; 2. a second spring plate; 3. a first switch; 31. a movable rod; 32. a spring; 33. a pushing block; 331. chamfering; 34. a guide post; 35. a positioning block; 4. a second switch; 41. an abutting portion; 5. a switch bracket; 51. a positioning groove; 52. fixing the column; 6. a middle frame; 61. a hair bulb bin; 62. a cutter head cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only 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 the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical"

The orientation or positional relationship indicated by "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description and to simplify the description, and does not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the 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.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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.

Referring to fig. 1 and 2, in an embodiment of a protection switch provided by the present utility model, the protection switch includes a first elastic sheet 1, a second elastic sheet 2, a first switch 3, a second switch 4, and a switch bracket 5:

The first elastic sheet 1 and the second elastic sheet 2 are respectively arranged at two ends of the switch bracket 5 and are respectively used for connecting the anode and the cathode of a power supply. One end of the first elastic sheet 1 and one end of the second elastic sheet 2, which are close to each other, are arranged at intervals up and down; the first elastic sheet 1 is provided with an upward protrusion 11, the first switch 3 is in sliding contact with one side of the protrusion 11, and the first switch 3 is pushed towards the protrusion 11 to press and bend the first elastic sheet 1 downwards; the second switch 4 is abutted to the bottom of the second elastic sheet 2, and the second elastic sheet 2 can be bent upwards by pushing the second switch 4 upwards. When the first elastic sheet 1 and the second elastic sheet 2 are bent at the same time, one ends of the first elastic sheet 1 and the second elastic sheet 2, which are close to each other, can be contacted with each other, so that a circuit is communicated; and only one of the two switch elastic sheets is pressed and bent, the switch elastic sheet can not be contacted with the other switch elastic sheet, namely, the open circuit state is kept. That is, only if the first switch 3 is pushed to bend the first elastic piece 1 downward and the second switch 4 is pushed to bend the second elastic piece 2 upward, the first elastic piece 1 and the second elastic piece 2 can be contacted to connect the circuit. In a specific embodiment, the distance between the first elastic piece 1 and the second elastic piece 2 in the natural state can be set to be larger than the distance between one elastic piece and the other elastic piece when the other elastic piece is bent to the maximum deformation, so that the switch elastic piece cannot be contacted with the other switch elastic piece when the one switch elastic piece is bent within the range of the maximum deformation.

In this embodiment, when in use, the first elastic sheet 1 and the second elastic sheet 2 are respectively connected with the positive electrode and the negative electrode of the power supply of the hair bulb trimmer, the first switch 3 and the second switch 4 are respectively connected with the hair bulb compartment 61 and the cutter head cover 62 of the hair bulb trimmer, so that the first switch 3 can be respectively pushed towards the protrusion 11 and the second switch 4 can be pushed upwards when the hair bulb compartment 61 and the cutter head cover 62 are installed, the first switch 3 presses and bends the first elastic sheet 1 downwards through the extrusion protrusion 11, and the second switch 4 moves upwards to press and bend the second elastic sheet 2. After the hair bulb bin 61 and the cutter head cover 62 are normally arranged on the hair bulb trimmer, the two elastic sheets are simultaneously bent, and one ends of the two elastic sheets, which are close to each other, can be contacted with each other, so that a circuit of the hair bulb trimmer is communicated, and the hair bulb trimmer works normally; when the hair bulb trimmer falls off to enable the cutter head cover 62 or the hair bulb bin 61 to fall off, only one switch elastic piece is bent, and the switch elastic piece cannot be contacted with the other switch elastic piece, so that a circuit of the hair bulb trimmer is disconnected, and damage to a user is avoided.

Specifically, the first switch 3 may be provided to include the movable lever 31 and the spring 32; the movable rod 31 is transversely arranged in a moving way, and one end of the movable rod 31 is coaxially and fixedly connected with a push block 33 which is abutted against the protrusion 11; the push block 33 is cuboid, the section size of the push block 33 is slightly larger than that of the movable rod 31, a guide post 34 is fixedly connected to the center of one side surface of the push block 33, which is opposite to the movable rod 31, the spring 32 is sleeved on the guide post 34, and the guide post 34 can prevent the movable rod 31 from deviating caused by bending of the spring 32; one end of the spring 32 is connected with the push block 33, the other end of the spring 32 is connected with the switch bracket 5, and the spring 32 is preferably a pressure spring and plays a role in buffering and resetting the movable rod 31.

Further, the protrusion 11 may be triangular, the bottom edge of the push block 33 is provided with a chamfer 331 abutting against a slope of the protrusion 11, and the inclination angles of the abutted chamfer 331 and the slope of the protrusion 11 are the same, so that moving the movable rod 31 transversely towards the protrusion 11 can make the push block 33 relatively move on the slope of the protrusion 11, so as to press the protrusion 11 to bend the first elastic sheet 1 downwards.

Further, the push block 33 may be provided with a positioning block 35, and a positioning groove 51 is formed at a corresponding position on the top of the switch bracket 5, where the positioning groove 51 is elongated and extends along the length direction of the movable rod 31, and the positioning block 35 moves along the positioning groove 51 when the movable rod 31 is pushed laterally. Here, the positioning groove 51 restricts the positioning block 35 from moving circumferentially and plays a guiding role in the movement of the positioning block 35, preventing the push block 33 from being separated from the protrusion 11 due to the rotation of the movable rod 31, so that the movable rod 31 is pushed more stably.

Specifically, a strip-shaped abutting portion 41 may be convexly disposed at the upper end of the second switch 4, the cross-sectional dimension of the abutting portion 41 is smaller than that of the second switch 4, and the abutting portion 41 abuts against the lower surface of the second elastic sheet 2, so that the contact area between the second switch 4 and the second elastic sheet 2 is reduced, and the second elastic sheet 2 is easier to be bent by reducing the stress area of the second elastic sheet 2, so that labor is saved. In addition, the top of the abutting portion 41 is preferably rounded, so that abrasion is not likely to occur when the second elastic sheet 2 is bent, and the service life is improved.

Specifically, two cross pads are fixedly connected to two ends of the switch support 5 respectively, a fixing column 52 is vertically and fixedly connected to the center of each cross pad, and the first elastic sheet 1 and the second elastic sheet 2 are fixedly sleeved on the corresponding two fixing columns 52 in a mode of locking screws or hot pressing respectively.

As shown in fig. 3, based on the protection switch provided in the above embodiment, the present utility model further provides a hair bulb trimmer, which includes a middle frame 6, a hair bulb compartment 61 and a cutter head cover 62, wherein the hair bulb compartment 61 is detachably disposed at one end of the middle frame 6 in an assembling manner, and the cutter head cover 62 is detachably disposed at the other end of the middle frame 6 in a threaded connection manner, which is a conventional structural design of the conventional hair bulb trimmer. Importantly, the protection switch is arranged in the middle frame 6, specifically, the switch bracket 5 is fixedly arranged in the middle frame 6, the movable rod 31 is transversely inserted into the handle end of the middle frame 6 provided with the hair bulb bin 61 in a moving way, one end of the movable rod 31, which is far away from the switch bracket 5, can be abutted with the hair bulb bin 61, and the first switch 3 can be transversely pushed towards the protrusion 11 when the hair bulb bin 61 is arranged; the second switch 4 is vertically movably inserted into the head end of the middle frame 6 provided with the cutter head cover 62, one end of the second switch 4 away from the switch bracket 5 can be abutted with the cutter head cover 62, and the cutter head cover 62 can push the second switch 4 upwards when being installed. Since the hair bulb trimmer employs the protection switch of the above-described embodiment, the hair bulb trimmer has the advantageous effects described above with reference to the above-described embodiment.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The protection switch is characterized by comprising a first elastic piece (1), a second elastic piece (2), a first switch (3), a second switch (4) and a switch bracket (5);

The first elastic piece (1) and the second elastic piece (2) are respectively arranged at two ends of the switch bracket (5), and one ends, close to each other, of the first elastic piece (1) and the second elastic piece (2) are arranged at intervals up and down; the first elastic sheet (1) is provided with an upward protrusion (11), the first switch (3) is in sliding contact with one side of the protrusion (11), and the first switch (3) is pushed towards the protrusion (11) to press and bend the first elastic sheet (1) downwards; the second switch (4) is abutted to the bottom of the second elastic sheet (2), and the second switch (4) is pushed upwards to press and bend the second elastic sheet (2) upwards;

One end, which is close to the other end, of the first elastic piece (1) and the second elastic piece (2) can be contacted with each other when the first elastic piece and the second elastic piece are bent at the same time, and only one switch elastic piece is not contacted with the other switch elastic piece when the first elastic piece and the second elastic piece are bent.

2. A protection switch according to claim 1, characterized in that said first switch (3) comprises a movable lever (31) and a spring (32); the movable rod (31) is transversely arranged in a moving way, and a pushing block (33) which is abutted with the protrusion (11) is arranged at one end of the movable rod (31); a guide column (34) is arranged on one side surface of the pushing block (33), and the spring (32) is sleeved on the guide column (34); one end of the spring (32) is connected with the pushing block (33), and the other end of the spring (32) is connected with the switch bracket (5).

3. A protection switch according to claim 2, wherein the protrusion (11) is triangular, and the bottom edge of the push block (33) is provided with a chamfer (331) abutting against an inclined surface of the protrusion (11), and the abutted chamfer (331) and the inclined surface of the protrusion (11) have the same inclination angle.

4. A protection switch according to claim 2 or 3, wherein the push block (33) is provided with a positioning block (35), the switch bracket (5) is correspondingly provided with a positioning groove (51), and the positioning block (35) is movably arranged in the positioning groove (51).

5. A protection switch according to claim 1, wherein the upper end of the second switch (4) is provided with a strip-shaped abutting portion (41) in a protruding manner, and the abutting portion (41) abuts against the lower surface of the second elastic sheet (2).

6. A protection switch according to claim 1, wherein two fixing columns (52) are fixedly arranged at two ends of the switch support (5), and the first elastic sheet (1) and the second elastic sheet (2) are fixedly sleeved on the corresponding two fixing columns (52) respectively.

7. The hair bulb trimmer comprises a middle frame (6), and a hair bulb bin (61) and a cutter head cover (62) which are respectively and detachably arranged at two ends of the middle frame (6); characterized in that it further comprises a protection switch according to any one of claims 1-6, said protection switch being arranged inside said central frame (6); the hair bulb bin (61) can be abutted with the first switch (3) when being installed and push the first switch (3) towards the protrusion (11); the cutter head cover (62) can be abutted with the second switch (4) when being installed, and pushes the second switch (4) upwards.