TWM534835U - Wall electric photographing device - Google Patents

Description

Wall electrical imaging device

The present invention relates to a wall electrical photographic device, and more particularly to a wall electrical photographic device mounted on a wall.

According to the wall socket and wall switch, the wall electrical device is widely used. The existing wall electrical device has limited functions and cannot provide the function of photography. When the user needs to use the camera device (such as a surveillance camera), it must be purchased separately, resulting in use. Inconvenience. However, surveillance cameras are widely used and can be installed in factories, dormitories, shops, buildings or community homes where entrances and exits, passages, etc. need to be monitored. The surveillance cameras can be used to record the current situation for later investigation and storage. Such as the use of certificates, in order to deter unscrupulous acts of unlawful behavior, and thus avoid the occurrence of harm to law and order.

In summary, the creator feels that the above defects can be improved, and he has devoted himself to research and cooperates with the application of academics, and finally proposes a design that is reasonable in design and effective in improving the above defects.

The technical problem to be solved by the present invention is to provide a wall electrical photographing device that enables the wall electrical device to have a photographing function to facilitate application and reduce the burden on the user to purchase the photographing device.

In order to solve the above technical problems, the present invention provides a wall electrical photography package. The device includes: at least one of a socket unit and a switch unit; and a camera module, the camera module includes a lens, and the camera module is disposed on the device body, the camera The module is electrically connected to the device body.

The beneficial effects of this creation:

The wall electrical photographic device of the present invention includes a device body and a photographic module. The device body is provided with at least one of a socket unit and a switch unit. The photographic module includes a lens, and the photographic module is disposed on the device body. The photographic module is electrically connected to the device body, so that the wall electrical device can have the function of photography, which can facilitate the application and reduce the burden on the user to purchase the photographic device.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and explanation, and are not intended to limit the creation.

1‧‧‧ device body

11‧‧‧Socket unit

12‧‧‧ Socket slot

13‧‧‧ accommodating slot

14‧‧‧Second electrical contact

15‧‧‧ Groove

17‧‧‧Loading board

18‧‧‧容盒

181‧‧‧ openings

2‧‧‧Photography module

21‧‧‧ lens

22‧‧‧Connector

23‧‧‧Connecting line

24‧‧‧Base

3‧‧‧Replaceable modules

31‧‧‧Module Ontology

32‧‧‧Connector unit

33‧‧‧First electrical contact

34‧‧‧Electronic devices

35‧‧‧Connecting seat

36‧‧‧Display device

37‧‧‧Modular lens

38‧‧‧ million socket

39‧‧‧Module switch

4‧‧‧Adapter

41‧‧‧Connector

42‧‧‧Connector

5‧‧‧Switch unit

1 is an exploded perspective view of a first embodiment of a wall electrical imaging device of the present invention.

Figure 2 is a perspective view of a first embodiment of the wall electrical imaging apparatus of the present invention.

Fig. 3 is an exploded perspective view showing a second embodiment of the wall electrical imaging apparatus of the present invention.

Figure 4 is a perspective view of a third embodiment of the wall electrical imaging apparatus of the present invention.

Figure 5 is a perspective view of a fourth embodiment of the wall electrical imaging apparatus of the present invention.

Fig. 6 is a perspective view showing a fifth embodiment of the wall electrical imaging apparatus of the present invention.

Fig. 7 is an exploded perspective view showing a sixth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 8 is a perspective view of a seventh embodiment of the wall electrical imaging apparatus of the present invention.

Figure 9 is a perspective view of an eighth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 10 is a perspective view of a ninth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 11 is a perspective exploded view of a tenth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 12 is a perspective view showing an eleventh embodiment of the wall electrical imaging apparatus of the present invention.

Figure 13 is an exploded perspective view showing a twelfth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 14 is a perspective exploded view of the thirteenth embodiment of the wall electrical imaging device of the present invention.

Figure 15 is an exploded perspective view showing a fourteenth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 16 is a perspective exploded view of the fifteenth embodiment of the wall electrical imaging device of the present invention.

Figure 17 is a perspective exploded view of a sixteenth embodiment of the wall electrical imaging apparatus of the present invention.

Figure 18 is a perspective view showing a seventeenth embodiment of the wall electrical imaging apparatus of the present invention.

[First Embodiment]

Referring to Figures 1 and 2, the present invention provides a wall electrical imaging device that can be applied to electrical devices such as wall sockets and wall switches, and can also be combined with the technology of the Internet of Things (IOT). This embodiment discloses that it is applied to a wall socket, and the wall electrical photographing apparatus includes the apparatus body 1 and the photographing module 2.

The shape of the apparatus body 1 is not limited, and may be a plate body, a block body or any of various shapes, and is not limited, and may be appropriately changed as needed. The device body 1 can be integrally formed or a two-piece, multi-piece combined construction. The device body 1 is provided with at least one of a socket unit and a switch unit. The device body 1 is provided with at least one socket unit 11. The specifications and types of the socket unit 11 are not limited, and can be various types of jacks. Or electrical connectors, etc. A suitable circuit (not shown) may be provided inside the apparatus body 1. Since the device body 1 and the socket unit 11 are prior art, and the present invention does not limit the type and structure of the device body 1 and the socket unit 11, it will not be described again.

The camera module 2 can be disposed on the device body 1, and the camera module 2 can be electrically connected to the device body 1 and the replaceable module 3, etc. The partial protruding device body 1 of the group 2. The embodiment of the present invention provides a camera module 2, which includes a lens 21, and each camera module 2 can be provided with one, two or more lenses 21 as needed. One lens 21, the lens 21 is exposed to the outside of the apparatus body 1.

The camera module 2 can be inserted or pivoted on the device body 1. In this embodiment, the camera module 2 is inserted into the device body 1, that is, on the side of the device body 1. The rim is further provided with a insertion slot 12, and the insertion slot 12 can be located at the top, the left side or the right side of the device body 1. In addition, the camera module 2 further includes a connector 22, which can be a USB connector, an IEEE1394 connector, an HDMI connector, an AV terminal or a DC terminal, and the like. The connector 22 and the lens 21 are electrically connected. Sexual connection. The photographic module 2 can be inserted into the insertion slot 12 to fix the photographic module 2 to the device body 1. The photographic module 2 can be electrically connected to the device body 1 and the replaceable module 3 by the connector 22, That is, the camera module 2 can be electrically connected to the internal circuit of the device body 1 and the internal circuit of the replaceable module 3 by the connector 22. The lens 21 of the photographic module 2 can be exposed at an edge (such as a top edge) of the apparatus body 1 to take an image with the lens 21.

Referring to FIG. 1 and FIG. 2 , in the embodiment, the wall electrical imaging device further includes a replaceable module 3 . The replaceable module 3 is detachably disposed on the device body 1 , and the replaceable module 3 is One or more are provided, and two or more are provided as needed. This embodiment discloses that a replaceable module 3 is provided. The replaceable module 3 has a module body 31 and at least one connector unit 32 disposed on the module body 31. The module body 31 may have a square or other shaped block, and its shape is not limited. The connector unit 32 may be various electrical connectors such as a USB connector, an IEEE 1394 connector, an HDMI connector, an AV terminal, or a DC terminal. One side (front side) of the apparatus body 1 may be provided with a receiving groove 13 corresponding to the replaceable module 3, and the replaceable module 3 is detachably (optionally) accommodated in the receiving groove 13. The replaceable module 3 can be further fixed to the device body 1 by screwing or snapping (not shown), the connector unit 32 exposing the device body 1, and the replaceable module 3 can be used as a charging module.

One or two or more first electrical contacts 33 may be disposed on the replaceable module 3 as an input end or an output end, which may be used to correspond to the second electrical contact 14 on the device body 1 . Contact each other. In this embodiment, the first electrical contact 33 is disposed on the sidewall of the replaceable module 3, the second electrical contact 14 is correspondingly disposed on the sidewall of the receiving slot 13, the first electrical contact 33 and the second The electrical contacts 14 are in contact to achieve an electrical connection. The second electrical contact 14 is disposed on the sidewall of the receiving slot 13 and is less likely to be exposed. Better security. In addition, at least one of the first electrical contact 33 and the second electrical contact 14 is a magnet, and the other is an iron piece or a magnet, so that the first electrical contact 33 and the second electrical property The contacts 14 can be magnetically fixed to each other, so that the replaceable module 3 can be positioned more stably in the accommodating groove 13. In addition, the first electrical contact 33 can also be disposed at the rear end of the replaceable module 3, and the second electrical contact 14 is correspondingly disposed at the rear end of the receiving slot 13, the first electrical contact 33 and the second The electrical contacts 14 are in contact to achieve an electrical connection.

The second electrical contact 14 of the device body 1 can be electrically connected to a circuit or the like inside the device body 1 to electrically connect the replaceable module 3 with the circuit inside the device body 1 to make the device body 1 Power or signals are transmitted to the replaceable module 3. The replaceable module 3 and the connector unit 32 can be used as an output or an input.

In this embodiment, the receiving slot 13 is disposed on one side (front side) of the device body 1 to expose the replaceable module 3 to one side of the device body 1, but is not limited, for example, when the replaceable module 3 is provided with multiple A part of the receiving groove 13 may also be disposed at the edge of the device body 1 to expose a portion of the replaceable module 3 to the edge of the device body 1. The edge of the replaceable module 3 can also be provided with a recess or a protrusion (not shown) to push the replaceable module 3 out of the receiving slot 13 by the tool, thereby facilitating the user to replace the replaceable module 3.

The module body 31 can be further provided with an electronic device 34. The electronic device 34 can be hidden or exposed to the module body 31. The electronic device 34 can be a transformer, a night light, a wireless charger, an emergency light, a wireless controller, Wireless AP, wireless module, timer, Ground Fault Circuit Interrupters (GFCI), wire take-up or sensor. The electronic device 34 can also be a motion detector that has a mobile object detection function. The electronic device 34 can also be a battery, so that the replaceable module 3 can also have the function of a mobile power source.

The edge of the replaceable module 3 can be provided with a connector 35 corresponding to the socket 12, and the connector 35 can be a USB connector, an IEEE1394 connector, an HDMI connector, an AV terminal or a DC terminal. Device. The connecting base 35 is disposed on a side of the replaceable module 3 adjacent to the insertion slot 12, so that the camera module 2 is inserted into the insertion slot. At 12 o'clock, the connector 22 of the camera module 2 can be inserted into the connector 35 to enable the camera module 2 to be electrically connected to the replaceable module 3 through the connector 22 and the connector 35, and the camera module 2 At the same time, the insertion of the insertion slot 12 and the connection seat 35 can provide a better fixing effect. Like the locking function, the camera module 2 and the replaceable module 3 can be more stably disposed on the device body 1.

The wall electrical photographic device of the present invention is provided with a device such as a socket unit 11 and a connector unit 32, and can provide a function of a wall socket, and is provided with a photographic module 2 for providing a photographic function, which can be used as a surveillance camera, so that the creation of the present Wall electrical photographic devices have many functions to facilitate application and reduce the burden on users to purchase photographic devices.

[Second embodiment]

Referring to FIG. 3 , in the embodiment, the type and configuration of the device body 1 and the replaceable module 3 are changed, and the insertion slot 12 is located on the left side or the right side (edge) of the device body 1 . The camera module 2 is disposed on the device body 1. The camera module 2 has a lens 21 and a connector 22. The lens 21 and the connector 22 are electrically connected by a connecting wire 23. The connector 35 is disposed on a side of the replaceable module 3 adjacent to the insertion slot 12, so that when the connector 22 of the camera module 2 is inserted into the slot 12, the connector 35 can be simultaneously inserted into the connector 35. The camera module 2 can be electrically connected to the replaceable module 3 through the connector 22 and the connector 35, and the connector 22 is simultaneously inserted into the insertion slot 12 and the connector 35. The lens 21 of the photographic module 2 is inserted into a groove 15 at the edge (such as the top edge) of the device body 1. The length of the groove 15 is not limited, and the groove 15 can be extended into a strip shape, so that the photographic module 2 The lens 21 can be adjusted to move left and right in the groove 15. The lens 21 of the camera module 2 can be combined or separated from the device body 1 so that the lens 21 of the camera module 2 can be separated from the device body 1 and placed at other appropriate positions, and the lens 21 of the camera module 2 can be photographed at an angle of shooting. Flexible changes.

[Third embodiment]

Referring to FIG. 4 , in the embodiment, the camera module 2 can be pivotally mounted on the device body 1 , and the camera module 2 includes a lens 21 , and the camera module 2 The lens 21 can be electrically connected to the device body 1 and the replaceable module 3 and the like by wires, guides or connectors. The camera module 2 can be pivoted up and down on the device body 1, so that the lens 21 of the camera module 2 can adjust different elevation angles, so that the shooting angle can be flexibly changed. The structure in which the photographing module 2 is pivotally mounted on the apparatus body 1 is not limited, and various conventional rotating shafts and pivoting structures can be utilized.

[Fourth embodiment]

Referring to FIG. 5 , in the embodiment, the camera module 2 includes a lens 21 and a base 24 . The lens 21 can be pivoted left and right on the base 24 , and the base 24 can be rotated up and down. The pivoting of the lens 21 of the camera module 2 can adjust different elevation angles, and can also adjust the angle by left and right rotations, so that the shooting angle can be flexibly changed. The lens 21 is pivotally mounted on the base 24, and the structure in which the base 24 is pivotally mounted on the apparatus body 1 is not limited, and various existing rotating shafts and pivotal structures can be utilized.

[Fifth Embodiment]

Referring to FIG. 6, in the embodiment, the device body 1 is pivotally connected to a carrier plate 17, so that the carrier plate 17 is reversibly connected to the device body 1. The configuration in which the carrier plate 17 is coupled to the apparatus body 1 is not limited, and various conventional rotating shafts, hinges, and pivotal structures can be utilized. The carrier plate 17 can be flipped open to place an electronic product. The carrier plate 17 can also be turned upside down when not in use to be stacked on the front side of the apparatus body 1.

[Sixth embodiment]

Referring to FIG. 7 , in the embodiment, the device body 1 is provided with a receiving box 18 , and the front side of the receiving box 18 has an opening 181 . A accommodating plate 17 is disposed in the accommodating case 18, and the carrier plate 17 can slide forward and backward in the accommodating case 18. The carrying plate 17 selectively extends from the opening 181 of the receiving box 18, that is, when the carrying board 17 slides forward, the opening 181 of the receiving box 18 can be extended to carry the electronic product. In this embodiment, the camera module 2 can be provided with two, and the two camera modules 2 can be disposed on the device body 1 by means of insertion or pivoting, and the camera modules 2 can be electrically Connected to the device body 1 and the replaceable module 3, etc., the camera modules 2 Selectively protrudes from the top of the device body 1.

[Seventh and Eightth Embodiments]

Referring to FIG. 8, in the embodiment, the socket unit 11 is a specification of an European standard (such as Germany). Referring to FIG. 9, in the present embodiment, the outlet unit 11 is a British (UK) specification. In addition, a switch unit 5 can be disposed on the device body 1 of the present invention. The switch unit 5 is electrically connected to the circuit of the device body 1 and can be used to control the switch of the device body 1. In another embodiment of the present invention, the socket unit 11 and the switch unit 5 and the like can also be replaced by a control electronic unit, that is, the device body 1 is provided with at least one of a socket unit, a switch unit and a control electronic unit. The control electronics unit can be used to control home appliances or other electronic products.

Ninth Embodiment

Referring to FIG. 10, in the embodiment, the replaceable module 3 is provided with a display device 36. The display device 36 can be a plurality of light emitting diodes, and the display device 36 can also be a liquid crystal display. The display device 36 is electrically connected to the replaceable module 3 . For example, the display device 36 can be electrically connected to the connector unit 32 . When the electronic product is electrically connected to the connector unit 32, it can be used to display the amount of current transmitted to the electronic product, for example, the greater the number of light-emitting diodes, the greater the amount of current delivered. The display device 36 can be used to display the magnitude of the voltage or the like in addition to the amount of current that can be displayed.

[Tenth and eleventh embodiments]

Referring to FIG. 11 and FIG. 12, the embodiment discloses that it is applied to a wall switch. The device body 1 can be provided with one, two or more switch units 5. The camera module 2 is disposed on the device body 1 , and the camera module 2 is electrically connected to the device body 1 . The device body 1 is provided with a receiving slot 13 for detachably receiving a replaceable module 3, and the replaceable module 3 is electrically connected to the device body 1.

As shown in FIG. 11, the device body 1 is provided with a connector 4, and the adapter 4 can have two connectors 41 and 42. The two connectors 41 and 42 are electrically connected, and the connector 42 is inserted. It is provided at the connection seat 35. The connector 22 of the photography module 2 is electrically connected The connector module 41 is connected to the module 22 so that the camera module 2 can be electrically connected to the replaceable module 3 through the connector 22 , the adapter 4 , and the connector 35 .

[Twelfth Embodiment]

Referring to FIG. 13 , the embodiment discloses that it is applied to a wall socket. In this embodiment, the outer shape of the device body 1 is a specification of the US standard, and the device body 1 may be provided with a socket unit 11 (or a switch unit). The replacement module 3 has a module body 31 and at least one connector unit 32. One side of the device body 1 is provided with a receiving slot 13 , and the replaceable module 3 is detachably received in the receiving slot 13 . The sidewall is provided with a first electrical contact 33. The sidewall of the receiving slot 13 is provided with a second electrical contact 14 . The first electrical contact 33 is in electrical contact with the second electrical contact 14 . The camera module 2 includes a lens 21 . The camera module 2 is disposed on the device body 1 , and the camera module 2 is electrically connected to the device body 1 . The camera module 2 is further provided with a connector slot 22, the camera module 2 further includes a connector 22, the connector 22 is electrically connected to the lens 21, and the camera module 2 is inserted into the insertion slot 12, and the camera module 2 is mounted. The connector body 22 is electrically connected to the device body 1 and the replaceable module 3.

[Thirteenth Embodiment]

Referring to FIG. 14 , the device body 1 is provided with a receiving slot 13 . The replaceable module 3 is detachably received in the receiving slot 13 . The electrical contacts 33 can be used to contact the second electrical contacts 14 corresponding to the device body 1. The replaceable module 3 can be a wireless charging module, a wireless control module, an intelligent power saving device, a switch module or a universal socket module.

[Fourteenth Embodiment]

Referring to FIG. 15, the embodiment discloses that the replaceable module 3 is provided with two.

[Fifteenth Embodiment]

Referring to FIG. 16 , the embodiment of the present invention discloses that the replaceable module 3 is a lens module, that is, the replaceable module 3 is provided with a module lens 37 for capturing images by using the module lens 37 .

[Sixteenth embodiment]

Referring to FIG. 17, the embodiment of the present invention discloses that the replaceable module 3 is a universal socket module, that is, the replaceable module 3 is provided with a universal socket 38.

[Seventeenth embodiment]

Referring to FIG. 18 , the replaceable module 3 is a switch module, that is, the replaceable module 3 is provided with a module switch 39 .

The wall electrical photographic device of the present invention includes a device body and a photographic module. The device body is provided with at least one of a socket unit and a switch unit. The photographic module includes a lens, and the photographic module is disposed on the device body. The camera module is electrically connected to the device body, so that the wall electrical device has the function of photographing, which can facilitate the application and reduce the burden on the user to purchase the photographing device.

The wall electrical photographic device of the present invention can be installed in an installation, a passage, a passage, and the like of a factory building, a dormitory, a store, a building, or a community house, thereby avoiding a situation that jeopardizes law and order. The wall electrical imaging device of the present invention can also be used for monitoring by a caregiver (such as an elderly person, an elderly person, a child or a patient, etc.) to ensure the health and safety of the caretaker.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of patent protection of the present invention. Therefore, the equivalent changes of the present specification and the contents of the drawings are all included in the scope of protection of the present invention. Within, combined with Chen Ming.

1‧‧‧ device body

11‧‧‧Socket unit

12‧‧‧ Socket slot

13‧‧‧ accommodating slot

14‧‧‧Second electrical contact

2‧‧‧Photography module

21‧‧‧ lens

22‧‧‧Connector

3‧‧‧Replaceable modules

31‧‧‧Module Ontology

32‧‧‧Connector unit

33‧‧‧First electrical contact

34‧‧‧Electronic devices

35‧‧‧Connecting seat

Claims (16)

A wall electrical photographic device includes: a device body, the device body is provided with at least one of a socket unit and a switch unit; and a photographic module, the photographic module includes a lens, and the photographic module is disposed on the device body The camera module is electrically connected to the device body. The wall electrical imaging device of claim 1, wherein the lens of the camera module is exposed to the outside of the device body, and the camera module is inserted or pivoted on the device body. The wall electrical imaging device of claim 1, wherein the edge of the device body is provided with a socket, the camera module further includes a connector, the connector is electrically connected to the lens, and the camera module is inserted. In the plugging slot, the camera module is electrically connected to the device body by the connector. The wall electrical photographic device of claim 3, further comprising a replaceable module, the replaceable module having a module body and at least one connector unit disposed on the module body, the device body One side is provided with a receiving slot, and the replaceable module is detachably received in the receiving slot. The side wall or the rear end of the replaceable module is provided with a first electrical contact, and the side wall or the rear end of the receiving slot is provided The second electrical contact is electrically connected to the second electrical contact. The wall electrical photographic device of claim 4, wherein the edge of the replaceable module is provided with a connector corresponding to the socket, the connector being disposed adjacent to the socket On one side, the connector of the camera module is inserted into the connector, so that the camera module is electrically connected to the replaceable module through the connector. The wall electrical imaging device of claim 4, wherein one of the first electrical contact and the second electrical contact is a magnet and the other is a piece of iron or a magnet to make the first electrical property. The contact and the second electrical contact are magnetically fixed to each other. The wall electrical photographic device of claim 1, wherein the photographic module further comprises The connector includes a connector, and the lens and the connector are electrically connected by a connecting wire. The lens of the camera module is inserted into a recess of the edge of the device body, and the camera module is electrically connected to the connector. Connected to the body of the device. The wall electrical imaging device of claim 1, wherein the camera module is pivotally mounted on the device body so that the lens of the camera module can adjust different elevation angles. The wall electrical photography device of claim 1, wherein the camera module further comprises a base, the lens being pivotable to the base and the right pivoting In the device, the lens of the camera module can be adjusted to different elevation angles, and the left and right rotations can be adjusted. The wall electrical photographic device of claim 1, wherein the device body is pivotally connected to a carrier plate that can be flipped upside down or flipped up over the front side of the device body. The wall electrical photographic device of claim 1, wherein the device body is provided with a receiving box, the front side of the accommodating box has an opening, and the carrying box is movably disposed with a carrying board, and the carrying board can be The accommodating case slides forward and backward, and the carrier plate selectively protrudes from the opening of the accommodating case. The wall electrical photographic device of claim 1, further comprising a replaceable module, the replaceable module having a module body and at least one connector unit disposed on the module body, the device body One side is provided with a receiving slot, and the replaceable module is detachably received in the receiving slot. The side wall or the rear end of the replaceable module is provided with a first electrical contact, and the side wall or the rear end of the receiving slot is provided The second electrical contact is electrically connected to the second electrical contact. The wall electrical imaging device of claim 12, wherein one of the first electrical contact and the second electrical contact is a magnet and the other is a piece of iron or a magnet to make the first electrical property. The contact and the second electrical contact are magnetically fixed to each other. The wall electrical photographic device of claim 1, further comprising a replaceable module, wherein one side of the device body is provided with a receiving slot, and the replaceable module is detachable The first electrical contact is disposed on the side wall or the rear end of the replaceable module, and the second electrical contact is disposed on the sidewall or the rear end of the receiving slot. The first electrical contact is disposed. The electrical connection is made by contacting the second electrical contact, and the replaceable module is provided with a module lens, a universal socket, a module switch or an electronic device. A wall electrical photographic device includes: a device body, the device body is provided with a control electronic unit; and a photographic module, the photographic module includes a lens, the photographic module is disposed on the device body, and the photographic module is electrically Connected to the body of the device. A wall electrical photographic device, comprising: a device body, the device body is provided with at least one of a socket unit, a switch unit and a control electronic unit, wherein one side of the device body is provided with a receiving slot; and a replaceable module The replacement module has a module body and at least one module lens disposed on the module body. The replaceable module is detachably received in the receiving slot, and the side wall or the rear end of the replaceable module is provided. The first electrical contact is provided with a second electrical contact on the sidewall or the rear end of the receiving slot, and the first electrical contact is in electrical contact with the second electrical contact.