Squeezing toothpaste type toothbrush

Abstract

The present invention discloses a toothpaste squeezing type toothbrush. When in use, the rear cover is pressed, and the rear cover spring is compressed, driving the piston rod and the one-way piston connected to the piston rod to squeeze the toothpaste forward. The forward pressure of the toothpaste causes the switch plug to move forward and the switch spring to be compressed. The switch plug is misaligned with the toothpaste outlet, and the toothpaste passes through the toothpaste outlet to the position of the toothbrush bristles. The forward movement of the one-way piston creates a negative pressure at the rear end position of the one-way piston, and the toothpaste between the one-way piston and the toothpaste baffle quickly moves forward to make up the position. After the toothpaste overflows, the pressure of the one-way piston squeezing the toothpaste disappears, and the switch spring causes the switch plug to block the toothpaste outlet again. When the rear cover is released, the rear cover spring resets, driving the piston rod to move backward and opening the pressure relief port of the one-way piston. Due to the pressure difference, the toothpaste quickly replenishes from the pressure relief port of the one-way piston to the front end of the one-way piston, and the one-way piston resets without reverse resistance. The beneficial effects of the present invention are: it can automatically open and close the toothpaste outlet, and can squeeze out a fixed amount of toothpaste by blindly pressing with one hand.

Description

Technical Field

[0001] The invention relates to the technical field of toothbrushes, and in particular to a toothbrush that pushes toothpaste. Background Art

[0002] The toothpaste and toothbrush commonly used now are separate items, which are inconvenient to carry when traveling. Therefore, toothbrushes with built-in toothpaste have appeared. Existing toothbrushes with built-in toothpaste have complex structures, large sizes, poor user experience, are not easy to popularize, and the toothpaste outlet is not tightly closed, which can easily cause secondary contamination of the toothpaste. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new pressing and pushing structure, which has the following characteristics: simple structure, suitable size, safety and hygiene, and is suitable for use by people with hand defects, the blind and normal people in places with insufficient light.

[0004] The technical solution of the present invention is as follows:

[0005] A push-type toothbrush for toothpaste, comprising a toothbrush head and a toothbrush handle, wherein the toothbrush head comprises a toothbrush head rod and toothbrush bristles fixed on the toothbrush head rod, wherein a first cavity is arranged inside the toothbrush head rod, and a toothpaste outlet connected to the first cavity is arranged at the top thereof at the bottom of the toothbrush bristles, wherein a second cavity is arranged inside the toothbrush handle, wherein the toothbrush head rod is fixed to the front end of the toothbrush handle, wherein the first cavity and the second cavity are connected, and the aperture of the second cavity is larger than that of the first cavity, and wherein the push-type toothbrush for toothpaste further comprises a switch spring, a switch plug, a switch limiting ring and a paste pushing structure, wherein the switch spring is arranged at the The front end of the first cavity, the switch plug is slidably arranged in the first cavity, and the switch plug is located at the rear side of the switch spring, the switch limit ring is fixedly arranged in the first cavity, and the switch limit ring is located at the rear side of the switch plug, in the initial state, the switch spring is in a compressed state, one end of the switch spring is pressed against one end of the switch plug, the other end of the switch plug is pressed against the switch limit ring, and the switch plug blocks the toothpaste outlet, the outer diameter of the switch plug is larger than the inner diameter of the switch limit ring, and smaller than the outer diameter of the switch limit ring, the paste pushing structure is installed at the rear end of the toothbrush handle, and the paste pushing structure The toothbrush comprises a rear cover, a rear cover spring, a piston rod, a one-way piston, a piston cylinder, a toothpaste stopper and a rear fixing ring. The rear cover is slidably sleeved on the rear end of the toothbrush handle. The second inner cavity comprises a tapered section, a piston cylinder and a toothpaste stopper movable section which are connected in sequence. The tapered section is connected to the first cavity. The one-way piston is slidably arranged in the piston cylinder and connected to the front end of the piston rod. The rear end of the piston rod is fixed to the rear cover. The piston rod is placed in the second cavity. The rear cover spring is sleeved on the piston rod. One end of the rear cover spring is fixed to the rear cover and the other end is fixed to the rear fixing ring. The rear fixing ring is fixed to the toothbrush handle. The rear end of the brush handle is sleeved on the piston rod, the toothpaste baffle is located in the second inner cavity and sleeved on the piston rod, and the toothpaste baffle is located between the one-way piston and the rear fixing ring, the middle cavity of the one-way piston is connected to the second cavity, the front and rear ends of the one-way piston are respectively provided with a one-way piston pressure relief port and a piston rod guide opening hole connected to the middle cavity, the piston rod is inserted into the piston rod guide opening hole, the front end cross-section of the piston rod is a T-shaped head, the T-shaped head is located between the one-way piston pressure relief port and the piston rod guide opening hole, and the front end diameter of the T-shaped head is larger than the aperture of the one-way piston pressure relief port and the aperture of the piston rod guide opening hole.

[0006] A preferred embodiment of the present invention: the switch plug is in gap fit with the first cavity, the switch plug can slide in the first cavity, when the switch plug moves forward, the toothpaste outlet is automatically opened, and when it is reset, it blocks the toothpaste outlet again by itself.

[0007] A preferred embodiment of the present invention: the switch limit ring is interference fit with the first cavity.

[0008] A preferred embodiment of the present invention is that the inner ring of the toothpaste stopper is clearance-matched with the piston rod.

[0009] A preferred embodiment of the present invention: the outer ring of the toothpaste stopper is gap-matched with the second inner cavity.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) Each time the rear cover is pressed, a fixed amount of toothpaste can be pushed out and the toothpaste outlet can be automatically opened and closed.

[0012] (2) The one-way piston pushes the toothpaste forward, so that negative pressure is formed at the rear end of the one-way piston. The toothpaste between the rear end of the one-way piston and the toothpaste baffle quickly moves forward, and the toothpaste drives the toothpaste baffle to move forward as a whole. This prevents toothpaste from remaining in the second cavity and causing waste;

[0013] (3) It should be simple in structure, of appropriate size, safe and sanitary, and suitable for use by people with hand defects, the blind, and normal people in places with insufficient light. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the pushing toothpaste type toothbrush of the present invention in the initial state.

[0016] Figure 2 for Figure 1 A partial enlarged view of point A in the figure.

[0017] Figure 3 for Figure 1 A partial enlarged view of point B in FIG.

[0018] Figure 4 for Figure 1 A partial enlarged view of point C in the figure.

[0019] Figure 5 It is a structural schematic diagram of a toothbrush head rod and a toothbrush handle of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the push toothpaste type toothbrush of the present invention, in which the rear cover is pressed and the piston rod closes the piston pressure relief port.

[0021] Figure 7 This is a schematic structural diagram of a pushing toothpaste-type toothbrush of the present invention. When the rear cover is continuously pressed, the piston rod pushes the one-way piston forward, the toothpaste thrust pushes the switch plug to drive the switch spring to be compressed, and the toothpaste overflows from the toothpaste outlet.

[0022] Figure 8 The invention discloses a push-type toothbrush for squeezing toothpaste. After the toothpaste overflows, the pressure of the one-way piston pushing the toothpaste disappears, the switch spring is reset, and the switch plug is driven to block the toothpaste outlet.

[0023] Fig. 9 The invention is a schematic structural diagram of a push-type toothbrush for toothpaste, in which the rear cover is loosened, the rear cover spring is reset, and the one-way piston is driven to reset.

[0024] Fig.10 It is a structural schematic diagram of the one-way piston in the present invention.

[0025] Fig.11 It is a schematic diagram of the combined structure of the one-way piston and the piston rod in the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In order to illustrate the technical solution of the present invention, a specific embodiment is provided below for illustration.

[0028] Example 1

[0029] like Figures 1 to 6 as well as Fig.10 and Fig.11As shown, the push toothpaste type toothbrush of this embodiment includes a toothbrush head 1 and a toothbrush handle 2, wherein the toothbrush head 1 includes a toothbrush head rod 11 and toothbrush bristles 12 fixed on the toothbrush head rod 11, wherein a first cavity 13 is provided inside the toothbrush head rod 11, and a toothpaste outlet 14 connected to the first cavity 13 is provided at the top thereof at the bottom of the toothbrush bristles 12, wherein a second cavity 21 is provided inside the toothbrush handle 2, and the aperture of the second cavity 21 is larger than the aperture of the first cavity 13, wherein the toothbrush head rod 11 is fixed at the front end of the toothbrush handle 2, wherein the first cavity 13 is connected to the second cavity 21, and the toothbrush head rod 11 and the toothbrush handle 2 may be integrated or may be two components assembled together.The pushing toothpaste toothbrush also includes a switch spring 3, a switch plug 6, a switch limit ring 4 and a paste pushing structure 5, wherein the switch spring 3 is arranged at the front end of the first cavity 13, the switch plug 6 is slidably arranged in the first cavity 13, and the switch plug 6 is located at the rear side of the switch spring 3, the switch limit ring 4 (the switch limit ring 4 is used to limit the position of the switch plug 6 to move toward the rear end, and the middle of the switch limit ring 4 is through for toothpaste to pass through) is fixedly arranged in the first cavity 13, and the switch limit ring 4 is located at the rear side of the switch plug 6. In the initial state, it is preferred that the switch spring 3 is in a compressed state, one end of the switch spring 3 is pressed against one end of the switch plug 6, and the other end of the switch plug 6 is pressed against The switch limit ring 4 is squeezed and abutted, and the switch plug 6 blocks the toothpaste outlet 14 (the length direction of the switch plug 6 is longer than the length of the toothpaste outlet 14). The outer diameter of the switch plug 6 is larger than the inner diameter of the switch limit ring 4 and smaller than the outer diameter of the switch limit ring 4. The paste pushing structure 5 is installed at the rear end of the toothbrush handle 2. The paste pushing structure includes a rear cover 51, a rear cover spring 52, a piston rod 53, a one-way piston 54, a piston cylinder 55, a toothpaste baffle 56 and a rear fixed ring 57. The rear cover 51 is slidably sleeved on the rear end of the toothbrush handle 2. The second inner cavity 21 includes a tapered section 22, a piston cylinder 55 and a toothpaste baffle movable section 23 which are connected in sequence. The tapered section 22 is connected to the first cavity 13. The one-way piston 54 is slidably arranged The piston rod 53 is in the piston cylinder 55 and connected to the front end of the piston rod 53. The rear end of the piston rod 53 is fixed to the rear cover 51. The piston rod 53 is placed in the second cavity 21. The rear cover spring 52 is sleeved on the piston rod 53, one end of which is fixed to the rear cover 51, and the other end is fixed to the rear fixing ring 57. The rear fixing ring 57 is fixed to the rear end of the toothbrush handle 2 and sleeved on the piston rod 53. The toothpaste stopper 56 is located in the second inner cavity 21 and sleeved on the piston rod 53, and the toothpaste stopper 56 is located between the one-way piston 54 and the rear fixing ring 57. The middle cavity 543 of the one-way piston 54 is connected to the second cavity 21. The front and rear ends of the one-way piston 54 are respectively provided with a connecting middle cavity 543. The one-way piston pressure relief port 541 and the piston rod guide opening hole 542 of the intermediate cavity 543, the piston rod 53 is inserted into the piston rod guide opening hole 542 (since the one-way piston 54 is made of elastic material, such as plastic, the piston rod 53 can be inserted from the opening position of the piston rod guide opening hole 542. After being inserted, the piston rod guide opening hole 542 can guide the linear motion of the piston rod 53), the front end cross-section of the piston rod 53 is a T-shaped head 531, the T-shaped head 531 is located between the one-way piston pressure relief port 541 and the piston rod guide opening hole 542, and the front end diameter of the T-shaped head 531 is larger than the aperture of the one-way piston pressure relief port 541 and the aperture of the piston rod guide opening hole 542.

[0030] When assembling the push-type toothbrush of the present invention, the switch spring 3, the switch plug 6, and the switch fixing ring 4 are first installed in sequence, wherein the switch plug 6 is preferably transitionally matched with the first cavity 13, and the switch fixing ring 4 is interference-fitted with the first cavity 13. A tool is required to press the switch fixing ring 4 into the first cavity 13. Figure 1 then pour the toothpaste into the first cavity 13 and the second cavity 21, and then sequentially load the one-way piston 54 and the piston rod assembly 53, the toothpaste baffle 56, the rear fixing ring 57, the rear cover spring 52, the rear cover 51.

[0031] First, when the push-to-pull toothpaste type toothbrush is in the initial state, Figure 1 When in use, the rear cover 51 is pressed, the rear cover spring 52 is compressed and stores rebound energy, and the rear cover 51 drives the piston rod 53 fixed thereto to move forward until the front end of the piston rod 53 abuts against the one-way piston pressure relief port 541 and blocks the one-way piston pressure relief port 541, as shown in FIG. Figure 6 As shown. Continue to press the back cover 51, the piston rod 53 pushes the one-way piston 54 to move forward, and the one-way piston 54 pushes the toothpaste forward, pushing the toothpaste forward through the tapered section 22 and the first cavity 13, and the toothpaste forms a forward pressure through the switch fixing ring 4, squeezing the switch plug 6 and forcing the switch plug 6 to move forward, while the switch spring 3 is compressed and stores rebound energy, the switch plug 6 is misaligned with the toothpaste outlet 14, and the toothpaste passes through the toothpaste outlet 14 to the position of the toothbrush bristles 12, as shown. Figure 7 The forward movement of the one-way piston 54 forms a negative pressure at the rear end of the one-way piston 54, and the toothpaste between the one-way piston 54 and the toothpaste stopper 56 quickly moves forward, and the toothpaste stopper 56 moves forward with the toothpaste between the one-way piston 54 and the toothpaste stopper 56 (because the toothpaste is sealed by the toothpaste stopper 56). Figure 8 As shown. After the toothpaste overflows, the pressure of the one-way piston 54 pushing the toothpaste disappears, the switch spring 3 is reset, and the switch plug 6 blocks the toothpaste outlet 14; the rear cover 51 is loosened, the rear cover spring 52 is reset, and the piston rod 53 moves to the rear end and opens the one-way piston pressure relief port 541. Due to the pressure difference, the toothpaste is quickly replenished from the position between the piston rod 53 and the one-way piston 54 to the front end of the one-way piston 54. There is no reverse resistance when the one-way piston 54 is reset, and the piston rod 53 continues to move until the piston rod 53 abuts against the piston rod guide opening hole 542, and then the piston rod 53 pulls the one-way piston 54 to reset, as shown in FIG. Fig. 9 shown.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A push-type toothbrush for toothpaste, comprising a toothbrush head (1) and a toothbrush handle (2), wherein the toothbrush head (1) comprises a toothbrush head rod (11) and toothbrush bristles (12) fixed to the toothbrush head rod (11), a first cavity (13) is provided inside the toothbrush head rod (11), a toothpaste outlet (14) communicating with the first cavity (13) is provided at the top thereof at the bottom of the toothbrush bristles (12), a second cavity (21) is provided inside the toothbrush handle (2), the toothbrush head rod (11) is fixed to the front end of the toothbrush handle (2), the first cavity (13) and the second cavity (21) are communicated, Features: The aperture of the second cavity (21) is larger than the aperture of the first cavity (13). The pushing toothpaste type toothbrush further comprises a switch spring (3), a switch plug (6), a switch limiting ring (4) and a paste pushing structure (5). The switch spring (3) is arranged at the front end of the first cavity (13). The switch plug (6) is slidably arranged in the first cavity (13), and the switch plug (6) is located at the rear side of the switch spring (3). The switch limiting ring (4) is fixedly arranged in the first cavity (13), and the switch limiting ring (4) is located at the rear side of the switch plug (6). In the initial state, one end of the switch spring (3) abuts against one end of the switch plug (6), and the switch plug (6) is in a closed position. ) blocks the toothpaste outlet (14); the outer diameter of the switch plug (6) is larger than the inner diameter of the switch limit ring (4) and smaller than the outer diameter of the switch limit ring (4); the paste pushing structure (5) is installed at the rear end of the toothbrush handle (2); the paste pushing structure comprises a rear cover (51), a rear cover spring (52), a piston rod (53), a one-way piston (54), a piston cylinder (55), a toothpaste blocking piece (56) and a rear fixing ring (57); the rear cover (51) is slidably sleeved on the rear end of the toothbrush handle (2); the second cavity (21) comprises a tapered section (22), a piston cylinder (55) and a toothpaste blocking piece movable section (23) which are connected in sequence; the tapered section (22) is connected to the first cavity (13); the one-way The piston (54) is slidably arranged in the piston cylinder (55) and connected to the front end of the piston rod (53); the rear end of the piston rod (53) is fixed to the rear cover (51); the piston rod (53) is placed in the second cavity (21); the rear cover spring (52) is sleeved on the piston rod (53); one end of the rear cover spring is fixed to the rear cover (51); the other end of the rear cover spring is fixed to the rear end of the toothbrush handle (2) and sleeved on the piston rod (53); the toothpaste blocking sheet (56) is located in the second cavity (21) and sleeved on the piston rod (53); and the toothpaste blocking sheet (56) is located between the one-way piston (54) and the rear cover spring. The middle cavity (543) of the one-way piston (54) is connected to the second cavity (21) between the fixed ring (57), and the front end and rear end of the one-way piston (54) are respectively provided with a one-way piston pressure relief port (541) and a piston rod guide opening hole (542) connected to the middle cavity (543). The piston rod (53) is inserted into the piston rod guide opening hole (542). The front end cross section of the piston rod (53) is a T-shaped head (531). The T-shaped head (531) is located between the one-way piston pressure relief port (541) and the piston rod guide opening hole (542). The front end diameter of the T-shaped head (531) is larger than the aperture of the one-way piston pressure relief port (541) and the aperture of the piston rod guide opening hole (542).

2. The push-type toothbrush according to claim 1, Features: The switch plug (6) is clearance-matched with the first cavity (13).

3. The push-type toothbrush according to claim 1, Features: The switch limiting ring (4) is interference-fitted with the first cavity (13).

4. The push-type toothbrush according to claim 1, Features: The inner ring of the toothpaste blocking piece (56) is clearance-matched with the piston rod (53).

5. The push-type toothbrush according to claim 1, Features: The outer ring of the toothpaste blocking piece (56) is clearance-matched with the second cavity (21).

6. The push-type toothbrush according to claim 1, Features: The other end of the switch plug (6) abuts against the switch limit ring (4).

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