JPS6324863Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a contact connection device for a vacuum cleaner.

In the commonly used vacuum cleaner, the suction hose is removably connected to the suction port of the dust collection case.
The dust collection case and the main case are detachably connected, and the handle of the suction hose is provided with a switch for turning the electric blower inside the main case on and off. The electric blower is connected to the changeover switch by connecting contact connecting devices provided at the connection between the dust collection case and the main body case and at the connection between the suction port and the suction hose. Here, an example of a conventional contact connection device at the connection part between the suction port and the suction hose is shown in FIGS. 1 and 2.
This will be explained based on the diagram. A suction port cover 3 having a suction port 2 and forming a part of the outer peripheral wall of the dust collection case 1 is fixedly attached to the front part of the dust collection case 1. On the hose insertion port 5 side of the suction hose 4, there is a clamp 7 that removably engages with the locking groove 6 of the suction port cover 3, and an electric blower (not shown).
A pin-shaped contact 10 connected to a changeover switch 9 provided on the handle 8 of the suction hose 4 is provided to drive the suction hose 4. The dust collection case 1
Inside, one end of an elastic contact plate 13 is clamped and fixed by the holding part 11 of the suction port cover 3 and the holding part 12 of the dust collection case 1. When the hose outlet 5 is inserted into the suction port 2, the contact 10 is inserted into the dust collection case 1 through the pin hole 14 of the suction port cover 3, and its tip is elastically connected to the contact plate 13. A part of the circuit connecting the electric blower and the changeover switch 9 is closed. In this way, since the contact 10 and the contact plate 13 are in point contact, dust may adhere to the tip of the contact 10 or the contact plate 13 may
If 3 is permanently deformed, it has the disadvantage of causing poor contact. Note that a similar contact connection device including a contact and a contact plate is provided at the connecting portion between the dust collection case 1 and the main body case 15.

This invention was devised in view of these points, and aims to provide a contact connection device for a vacuum cleaner that can prevent poor contact.

This invention was developed in a vacuum cleaner that cleans by removably connecting the main body case that houses the electric blower, the dust collection case that houses the filter, and the suction hose, etc., to one of the connected bodies. An electrical connection is made by joining the elastic contact plate provided on the other side with a pin-shaped contact provided on the other side, and as the contact plate flexes due to the bonding of the contact plate and the contact, the pressure contact force is increased and the pressure of the contact is increased. By forming a protruding piece on the contact plate to be joined to the side surface, the electrical connection between the contact and the contact plate can be made even more reliably, and poor contact can be reliably prevented.

An embodiment of this invention will be explained based on FIGS. 3 to 5. Note that the same parts as those described in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted. Inside the dust collection case 1, which is a connecting body, there is an elastic contact plate 16 whose one end is connected to the holding part 11,
12 in a clamped state. This contact plate 16 has a protruding piece 17 formed by cutting and raising a part of the contact plate 16. A pin-shaped contact 10 that can freely come into contact with and separate from the contact plate 16 and the protruding piece 17 is provided on the hose insertion port 5 side of the suction hose 4, which is a connecting body.

In such a configuration, when the hose insertion port 5 is inserted into the suction port 2, the contact 10 is inserted into the dust collection case 1 through the pin hole 14, and the tip thereof is inserted into the contact plate 1.
It is elastically joined to 6. By this joining, contact plate 1
6 is bent, and as the contact plate 16 is bent, the protruding piece 17 joins to the side surface of the contact 10 with increasing pressure. Therefore, the contact 10 and the contact plate 16 are joined at two points, and the protruding piece 17 is elastically deformed and joined to the contact 10, so that the contact 10
The contact between the contact plate 16 and the contact plate 16 is ensured, and poor contact is prevented.

In addition, in a vacuum cleaner in which the dust collection case 1 and the main body case 15 are removably connected, the above-mentioned contacts 10 and contact plate 16 are placed opposite to the connection part between the dust collection case 1 and the main body case 15. In addition, in a vacuum cleaner using a suction port housing a motor, the contact 10 and the contact plate 16 may be provided at the connection between the suction hose and the extension pipe, and between the extension pipe and the suction port. It may also be used for connection with.

This device forms a protruding piece on the contact plate as described above, so that when the contact and the contact plate are elastically joined, the protruding piece is pressed against the side of the contact as the contact plate bends. The electrical connection between the contacts and the contact plate can be made even more reliable, and poor contact between the contacts and the contact plate can be reliably prevented.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is an enlarged cross-sectional side view of the suction hose connected to the suction port, and Fig. 3 shows an embodiment of this invention. Figure 4 is an enlarged cross-sectional side view of the mouth part, Figure 4 is an enlarged side view of the suction port connected to the suction hose, and Figure 5 is a further enlarged perspective view of the contact plate. It is. 1... Dust collection case (connection body), 4... Suction hose (connection body), 10... Contact, 16... Contact plate,
17...Protruding piece.

Claims (1)

[Scope of utility model registration request] In a vacuum cleaner that cleans by removably connecting a main body case housing an electric blower, a dust collection case housing a filter, and a connecting body such as a suction hose to each other, at least one portion of the connecting bodies connected to each other is provided. An elastic contact plate having one end fixed to one end of the connecting portion and a contact contact surface formed at the other end is provided, and the contact plate is bent to the other end to elastically connect to the contact contact surface of the contact plate. A contact connection device for a vacuum cleaner, characterized in that a pin-shaped contact is provided, and a protruding piece protruding toward the insertion side of the contact is formed on the contact plate.