Dot Matrix Handle of a Thermal Therapy Apparatus

Abstract

The present invention provides a dot matrix handle for a thermal therapy instrument, which relates to the technical field of treatment handles of thermal therapy instruments used in the medical or beauty industry. The dot matrix handle includes a handle housing, a lamp shade, a dot matrix head, a circuit board, a sleeve, and an LED lamp. The handle housing is detachably and fixedly connected to the lamp shade. The circuit board is installed inside the handle housing. The sleeve is installed inside the handle housing and is electrically connected to the circuit board. A slot hole is provided on the sleeve. The dot matrix head includes a cylinder body and an electrode. The cylinder body is fixedly inserted through the lamp shade, and the cylinder body is conductively inserted into the slot hole of the sleeve. The electrode is telescopically and conductively inserted into the cylinder body through an elastic buffer member. An electrode head is provided at the end of the electrode. The LED lamp is installed inside the handle housing and is electrically connected to the circuit board. The cylinder body is fixedly connected to a support plate, and multiple electrodes form a whole. When replacing the dot matrix head, all electrodes are replaced, avoiding the mixed use of about-to-be-eliminated electrodes and new electrodes, which may affect the effect.

Description

Technical Field

[0001] The present invention relates to the technical field of treatment handles of thermal treatment apparatuses, and more specifically to the technical field of treatment handles of thermal treatment apparatuses for the medical or beauty industries. Background Art

[0002] A thermal treatment apparatus is a beauty instrument that can achieve a stretching and tightening effect on the skin, has high safety, and does not cause wounds. The principle of the thermal treatment apparatus is to stimulate the dermis layer through radio frequency current, promote the synthesis of autologous collagen, improve skin quality, and can quickly remove wrinkles on the skin, making the skin firm and smooth. The action principle of radio frequency current is different from the selective photothermal principle of laser. Radio frequency current is converted into heat energy under the influence of resistance to produce a therapeutic effect. The human body is a current conductor. When radio frequency current acts on the human body, due to the impedance of the skin and subcutaneous tissues to electromagnetic waves, the water molecules in the tissue cells vibrate, rotate and rub at a speed of millions of times per second to generate heat. The heat energy acts on the target tissue, thereby destroying cells, or vaporizing cells, or contracting tissues. The dermis layer of adult skin mainly contains type I collagen, which is composed of 3 peptide chains connected by hydrogen bonds and in a helical shape. The collagen molecules are further cross-linked covalently to form stable collagen fibers. After being heated, the volume of the collagen fibers in the dermis layer increases and the collagen fiber septa disappear. The heat-sensitive hydrogen bonds are destroyed and curled, causing some collagen fibers to fuse with each other, thereby causing an immediate contraction of the collagen fibers. In addition, tissue thermal damage can also initiate a wound healing response, that is, stimulate the activity of fibroblasts, release cytokines and growth factors, and the latter promote the formation of collagen and elastin; after 12 weeks, the regularly arranged elastin and collagen fibers in the superficial dermis replace the original elastic tissue, thereby producing a continuous skin tightening effect. The currently common thermal treatment apparatuses have the following deficiencies: First, when a traditional microcurrent beauty instrument is in treatment, the contact part between the electrode and the skin is oppressed by the electrode, and the blood circulation of the skin here is not smooth, and the repair function of cells cannot be fully stimulated, so the thermal treatment effect is not very ideal; Second, after the microcurrent beauty instrument is used for a long time, the electrode will be worn and needs to be replaced. When replacing the electrode of the traditional current beauty instrument, the entire handle of the beauty instrument needs to be disassembled, and the operation is very troublesome. Summary of the Invention

[0003] The present invention provides a dot matrix handle for a thermal treatment apparatus, which solves the problems that the thermal treatment effect of the existing microcurrent beauty instrument is not very ideal and the electrode replacement operation is troublesome.

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

[0005] A dot matrix handle of a thermal therapy instrument, comprising a handle housing, a lamp shade, a dot matrix head, a circuit board, a sleeve and an LED lamp. The handle housing is detachably and fixedly connected to the lamp shade. The circuit board is installed inside the handle housing. The sleeve is installed inside the handle housing and is electrically connected to the circuit board. A slot hole is provided on the sleeve. The dot matrix head includes a cylinder body and an electrode. The cylinder body is fixedly penetrated through the lamp shade, and the cylinder body is conductively inserted into the slot hole of the sleeve. The electrode is telescopically and conductively inserted into the cylinder body through an elastic buffer member. An electrode head is provided at the end of the electrode. The LED lamp is installed inside the handle housing and is electrically connected to the circuit board.

[0006] Further, a central frustum is provided at the end of the electrode head, and pyramids distributed in a ring shape are further provided at the end of the electrode head, and the pyramids surround the outer periphery of the central frustum.

[0007] Further, the dot matrix head further includes a support plate. The support plate is detachably and fixedly connected to the lamp shade. A positioning sleeve is provided on the support plate. The cylinder body is penetrated through the positioning sleeve and is fixedly welded to the positioning sleeve. The cylinder bodies on the support plate are arranged in a regular hexagon dot matrix. A plate body is provided inside the lamp shade, and a guiding hole is provided on the plate body. The cylinder body is penetrated through the guiding hole.

[0008] Further, the elastic buffer member includes a first compression spring and a second compression spring. A first limiting block is provided on the electrode located inside the cylinder body. A first step surface for preventing the first limiting block from slipping out of the cylinder body is provided inside the cylinder body. The first compression spring is sleeved on the electrode, and two end portions of the first compression spring respectively abut against the first step surface and one end surface of the first limiting block. A limiting portion is provided inside the cylinder body. The second compression spring is located inside the cylinder body, and two end portions of the second compression spring respectively abut against the limiting portion and the other end surface of the second limiting block.

[0009] Further, a vibration mechanism is further included. The vibration mechanism includes a cylinder, a motor, a connecting rod, a seat plate, an eccentric wheel and a push rod. The cylinder is movably inserted into the cylinder body. A second limiting block is provided on the cylinder located inside the cylinder body. A second step surface for preventing the second limiting block from slipping out of the cylinder body is provided inside the cylinder body. The limiting portion is the end surface of the second limiting block. The motor is installed inside the handle housing and is electrically connected to the circuit board. The eccentric wheel is fixedly connected to the output shaft of the motor. The push rod is fixedly connected to the seat plate. The push rod is movably inserted into the slot hole of the sleeve and abuts against the end of the cylinder. One end of the connecting rod is hinged to the eccentric position of the eccentric wheel, and the other end of the connecting rod is hinged to the seat plate.

[0010] Further, a first pin shaft is provided at the eccentric position of the eccentric wheel, a second pin shaft is provided on the seat plate, connecting sleeves are respectively provided at two end portions of the connecting rod. The connecting sleeve at one end portion of the connecting rod is sleeved on the first pin shaft through a first bearing, and the connecting sleeve at the other end portion of the connecting rod is sleeved on the second pin shaft through a second bearing.

[0011] Further, it further includes a cable which is fixedly passed through the handle housing by a cable anti-bending head. A wire clip is provided in the handle housing, and the cable is clamped on the wire clip. One end of the cable is electrically connected to the circuit board, and an aviation plug is provided at the other end of the cable.

[0012] Further, it further includes a conductive elastic sheet. A groove is provided on the inner side wall of the sleeve slot hole. The conductive elastic sheet is located in the groove and fixedly connected to the sleeve. The conductive elastic sheet is electrically connected to the circuit board, and the conductive elastic sheet elastically presses against the cylinder body inserted in the slot hole.

[0013] Further, a male stop is provided on the handle housing, and a boss is provided on the male stop. A female stop is provided on the lamp shade, and a notch is provided on the female stop. The lamp shade is snap-fitted with the male stop of the handle housing through the female stop and is buckled outside the boss through the notch.

[0014] The beneficial effects that can be achieved by the present invention adopting the above technical solutions are as follows:

[0015] 1. While performing thermal treatment through the electrode head, the vibration mechanism can drive the electrode and the electrode head to perform high-frequency reciprocating vibration, playing a role in massaging the skin to promote blood circulation, thereby significantly improving the beauty or physiotherapy effect.

[0016] 2. When the electrode head needs to be replaced, detach the support plate from the lamp shade, then pull the dot matrix head outward from the lamp shade, and pull out the cylinder body from the guide hole, through hole and slot hole to complete the disassembly of the dot matrix head. Then, install the support plate of the new dot matrix head on the lamp shade and insert the cylinder body of the new dot matrix head into the guide hole, through hole and slot hole, and the rapid replacement of the electrode head can be completed. The operation is very convenient and fast, saving time and effort. Moreover, the cylinder body is fixedly connected to the support plate, and multiple electrodes form an integral body. When replacing the dot matrix head, all electrodes are replaced, avoiding the mixing of the electrodes about to be eliminated and the new electrodes from affecting the effect.

[0017] 3. The cylinder bodies are arranged in a regular hexagon dot matrix on the support plate. Compared with the arrangements of other shapes, the regular hexagon arrangement can accommodate more electrode heads under the same area, and the distribution of the electrode heads diverges layer by layer from the center to the periphery, with a more reasonable distribution. At the same time, a central cone is provided at the end of each electrode head, and pyramids are distributed around the periphery of the central cone, so that the contact points between the electrode heads and the skin are more evenly distributed, effectively improving the treatment effect.

[0018] 4. An LED lamp is provided in the handle housing. When performing treatment, the light emitted by the LED lamp irradiates out through the lamp shade, which can play a certain lighting effect, facilitating the staff to observe the skin condition and accurately position the treatment position on the skin, further improving the treatment effect. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the present invention;

[0021] Figure 2 For Figure 1 Partial enlarged schematic view at A in

[0022] Figure 3 For Figure 2 Partial enlarged schematic view at B in

[0023] Figure 4 Top cross-sectional view of the present invention;

[0024] Figure 5 For Figure 2 Partial enlarged schematic view at C in

[0025] Figure 6 For Figure 5 Partial enlarged schematic view at M in

[0026] Figure 7 For Figure 5 Partial enlarged schematic view at N in

[0027] Figure 8 For Figure 5 Partial enlarged schematic view at V in

[0028] Figure 9 For Figure 5 Partial enlarged schematic view at S in

[0029] Figure 10 For Figure 5 Z-Z cross-sectional view of

[0030] In the drawings, the components corresponding to the reference numerals are as follows:

[0031] 1 - Handle housing, 2 - Lamp shade, 3 - Circuit board, 4 - Sleeve, 5 - LED lamp, 6 - Bracket, 7 - Through hole, 8 - Guide hole, 9 - Cylinder, 10 - Electrode head, 11 - Electrode, 12 - Support plate, 13 - Plate body, 14 - Cylinder body, 15 - First compression spring, 16 - Second compression spring, 17 - First limit block, 18 - First step surface, 19 - Second limit block, 20 - Second step surface, 21 - Motor, 22 - Connecting rod, 23 - Seat plate, 24 - Eccentric wheel, 25 - Push rod, 26 - Output shaft, 27 - First pin shaft, 28 - Second pin shaft, 29 - Connecting sleeve, 30 - First bearing, 31 - Second bearing, 32 - Cable, 33 - Wire clamp, 34 - Conductive elastic sheet, 35 - Groove, 36 - Male stop, 37 - Boss, 38 - Female stop, 39 - Notch, 40 - Support, 41 - Slot hole, 42 - Central frustum, 43 - Pyramid, 44 - Positioning sleeve, 45 - Cable anti - folding head, 46 - Aviation plug. Detailed implementation mode

[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] Refer to Figure 1 、 Figures 4 to 8 , a dot - matrix handle of a thermal therapy instrument, comprising a handle housing 1, a lamp shade 2, a dot - matrix head, a circuit board 3, a sleeve 4, an LED lamp 5, a vibration mechanism, a cable 32 and a conductive elastic sheet 34. The handle housing 1 and the lamp shade 2 are detachably and fixedly connected. The specific connection relationship between the handle housing 1 and the lamp shade 2 is as follows: Refer to Figure 9 , a male stop 36 is provided on the handle housing 1, a boss 37 is provided on the male stop 36, a female stop 38 is provided on the lamp shade 2, a notch 39 is provided on the female stop 38. The lamp shade 2 is snap - connected to the male stop 36 of the handle housing 1 through the female stop 38 and is buckled outside the boss 37 through the notch 39. The handle housing 1 is made of ABS - acrylonitrile - butadiene - styrene copolymer resin material, opaque, with a streamlined appearance transition. The lamp shade 2 is made of PC - polycarbonate resin material, showing a semi - transparent effect and having a unique appearance shape.

[0034] The circuit board 3 is fixedly installed in the handle housing 1 through a bracket 6. The sleeve 4 is installed in the handle housing 1 and is electrically connected to the circuit board 3. In this embodiment, the sleeve 4 is fixedly installed on the circuit board 3. A slot 41 is provided on the sleeve 4, and a through hole 7 corresponding to the sleeve 4 is provided on the circuit board 3. The dot matrix head includes a cylinder body 9, an electrode 11, and a support plate 12. The cylinder body 9 is fixedly inserted through the lamp shade 2. The specific connection relationship between the cylinder body 9 and the lamp shade 2 is as follows: The support plate 12 is detachably and fixedly connected to the lamp shade 2, such as by bolt connection or snap connection, etc. A positioning sleeve 44 is provided on the support plate 12. The cylinder body 9 is inserted into the positioning sleeve 44 and is fixedly welded to the positioning sleeve 44. The cylinder bodies 9 on the support plate 12 are arranged in a regular hexagon dot matrix. A plate body 13 is provided in the lamp shade 2, and a guiding hole 8 is provided on the plate body 13. The cylinder body 9 is inserted through the guiding hole 8. The cylinder body 9 passes through the through hole 7 and is conductively inserted into the slot 41 of the sleeve 4. The specific electrical connection relationship between the cylinder body 9 and the sleeve 4 is as follows: A groove 35 is provided on the inner side wall of the slot 41 of the sleeve 4. A conductive elastic sheet 34 is located in the groove 35 and is fixedly connected to the sleeve 4. The conductive elastic sheet 34 is electrically connected to the circuit board 3. The conductive elastic sheet 34 is elastically pressed against the cylinder body 9 inserted into the slot 41.

[0035] The electrode 11 is telescopically and conductively inserted into the cylinder body 9 through an elastic buffer member. An electrode head 10 is provided at the end of the electrode 11. Refer to Figure 2 and Figure 3 , a central frustum 42 is provided at the end of the electrode head 10, and a pyramid 43 distributed in a ring shape is further provided at the end of the electrode head 10. The pyramid 43 surrounds the outer circumference of the central frustum 42. The specific structure of the elastic buffer member and its specific connection relationship with the electrode 11 and the cylinder body 9 are as follows: The elastic buffer member includes a first compression spring 15 and a second compression spring 16. A first limit block 17 is provided on the electrode 11 located in the cylinder body 9. A first step surface 18 for preventing the first limit block 17 from slipping out of the cylinder body 9 is provided in the cylinder body 9. The first compression spring 15 is sleeved on the electrode 11. The two end portions of the first compression spring 15 are respectively abutted against the first step surface 18 and one end surface of the first limit block 17. A limiting portion is provided in the cylinder body 9. The second compression spring 16 is located in the cylinder body 9. The two end portions of the second compression spring 16 are respectively abutted against the limiting portion and the other end surface of the second limit block 19.

[0036] Refer to Figure 5 and Figure 10The vibration mechanism includes a column 14, a motor 21, a connecting rod 22, a seat plate 23, an eccentric wheel 24 and a push rod 25. The column 14 is movably inserted in the cylinder 9. A second limit block 19 is provided on the column 14 located in the cylinder 9. A second step surface 20 is provided in the cylinder 9 to prevent the second limit block 19 from escaping from the cylinder 9. The limiting portion is the end surface of the second limit block 19. The motor 21 is fixedly installed in the handle housing 1 through a support 40, the motor 21 is electrically connected to the circuit board 3, the eccentric wheel 24 is fixedly connected to the output shaft 26 of the motor 21, the push rod 25 is fixedly connected to the seat plate 23, the push rod 25 is movably inserted in the slot 41 of the sleeve 4, and abuts against the end of the column 14, one end of the connecting rod 22 is hinged to the eccentric position of the eccentric wheel 24, and the other end of the connecting rod 22 is hinged to the seat plate 23, and the specific connection relationship between the connecting rod 22 and the eccentric wheel 24 and the seat plate 23 is as follows: a first pin shaft 27 is provided at the eccentric position of the eccentric wheel 24, a second pin shaft 28 is provided on the seat plate 23, and connecting sleeves 29 are respectively provided at both ends of the connecting rod 22, the connecting sleeve 29 at one end of the connecting rod 22 is sleeved on the first pin shaft 27 through a first bearing 30, and the connecting sleeve 29 at the other end of the connecting rod 22 is sleeved on the second pin shaft 28 through a second bearing 31.

[0037] The LED lamp 5 is installed in the handle housing 1. In this embodiment, the LED lamp 5 is fixedly installed on the circuit board 3 and electrically connected to the circuit board 3. After the LED lamp 5 is lit, the light is emitted through the lampshade 2. The cable 32 is fixedly inserted into the handle housing 1 through the cable anti-bending head 45. A wire clip 33 is provided in the handle housing 1. The cable 32 is clamped on the wire clip 33. One end of the cable 32 is electrically connected to the circuit board 3. An aviation plug 46 is provided at the other end of the cable 32. The cable 32 adopts high-quality twisted pair wire and is sheathed with a cotton yarn + PET encrypted braided mesh wire protection sleeve. It is resistant to high temperature, corrosion, and bending, has a long service life, and has very good insulation. The aviation plug 46 adopts a waterproof aviation plug SP13, which has strong sealing performance, which can ensure that oil and water stains will not enter the interior along the cable during use, causing a short circuit at the joint.

[0038] When the dot matrix handle of the thermal therapy instrument of the present invention is in use, it is electrically connected to the host of the thermal therapy instrument through an aviation plug 46. The staff holds the handle housing 1, contacts the electrode head 10 with the human skin, and the control circuit board 3 of the thermal therapy instrument host generates a specific voltage and current to form a safe and reliable high-frequency electric field. The current is conducted to the electrode head 10 through the sleeve 4, the cylinder body 9, and the electrode 11, and acts on the human epidermis through the electrode head 10 to generate a warming effect, realizing thermal therapy and achieving the effects of beauty treatment or physical therapy. During the thermal therapy, the electrode 11 and the electrode head 10 can be driven by a vibration mechanism to reciprocate, playing a massage role on the skin to promote blood circulation, thereby significantly improving the effects of beauty treatment or physical therapy. The principle of the vibration mechanism driving the electrode 11 and the electrode head 10 to reciprocate is as follows: The eccentric wheel 24 is driven to rotate by the motor 21, and then the seat plate 23 and the push rod 25 are driven to reciprocate along the slot hole 41 of the sleeve 4 through the connecting rod 22. The column body 14 is quickly pushed back and forth by the push rod 25, and then the reciprocating motion is transmitted to the electrode 11 through the second compression spring 16, thereby driving the electrode 11 and the electrode head 10 to vibrate at a high frequency and quickly, realizing the massage function of the electrode head 10. It should be noted that in order to ensure that the column body 14 can effectively transmit the reciprocating motion to the electrode 11 through the second compression spring 16, when selecting the stiffness coefficients of the first compression spring 15 and the second spring 16, the stiffness coefficient of the second spring 16 needs to be greater than that of the first compression spring 15. After the dot matrix handle of the thermal therapy instrument of the present invention is used for a long time, the electrode head 10 of the dot matrix head will be worn to a certain extent. When the electrode head 10 needs to be replaced due to wear to a certain extent, the support plate 12 can be detached from the lamp shade 2, and then the dot matrix head is pulled outwards from the lamp shade 2, and the cylinder body 9 is pulled out from the guide hole 8, the through hole 7, and the slot hole 41 to complete the disassembly of the dot matrix head. Then, the support plate 12 of the new dot matrix head is installed on the lamp shade 2, and the cylinder body 9 of the new dot matrix head is inserted into the guide hole 8, the through hole 7, and the slot hole 41, and the rapid replacement of the electrode head 10 can be completed.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dot matrix handle of a thermal treatment instrument, characterized in that, It includes a handle housing (1), a lamp shade (2), a dot matrix head, a circuit board (3), a sleeve (4) and an LED lamp (5). The handle housing (1) is detachably and fixedly connected to the lamp shade (2). The circuit board (3) is installed inside the handle housing (1). The sleeve (4) is installed inside the handle housing (1) and is electrically connected to the circuit board (3). A slot hole (41) is provided on the sleeve (4). The dot matrix head includes a cylinder body (9) and an electrode (11). The cylinder body (9) is fixedly inserted through the lamp shade (2), and the cylinder body (9) is conductively inserted into the slot hole (41) of the sleeve (4). The electrode (11) is telescopically and conductively inserted into the cylinder body (9) through an elastic buffer member. An electrode head (10) is provided at the end of the electrode (11). The LED lamp (5) is installed inside the handle housing (1) and is electrically connected to the circuit board (3). The elastic buffer member includes a first compression spring (15) and a second compression spring (16). A first limit block (17) is provided on the electrode (11) located inside the cylinder body (9). A first step surface (18) for preventing the first limit block (17) from coming out of the cylinder body (9) is provided inside the cylinder body (9). The first compression spring (15) is sleeved on the electrode (11), and the two end portions of the first compression spring (15) are respectively abutted against the first step surface (18) and one end surface of the first limit block (17). It further includes a vibration mechanism. The vibration mechanism includes a cylinder (14), a motor (21), a connecting rod (22), a seat plate (23), an eccentric wheel (24) and a push rod (25). The cylinder (14) is movably inserted into the cylinder body (9). A second limit block (19) is provided on the cylinder (14) located inside the cylinder body (9). A second step surface (20) for preventing the second limit block (19) from coming out of the cylinder body (9) is provided inside the cylinder body (9). The motor (21) is installed inside the handle housing (1). A limiting portion is provided inside the cylinder body (9). The limiting portion is the end surface of the second limit block (19). The second compression spring (16) is located inside the cylinder body (9), and the two end portions of the second compression spring (16) are respectively abutted against the limiting portion and the other end surface of the second limit block (19). The motor (21) is electrically connected to the circuit board (3). The eccentric wheel (24) is fixedly connected to the output shaft (26) of the motor (21). The push rod (25) is fixedly connected to the seat plate (23). The push rod (25) is movably inserted into the slot hole (41) of the sleeve (4) and abuts against the end of the cylinder (14). One end of the connecting rod (22) is hinged to the eccentric position of the eccentric wheel (24), and the other end of the connecting rod (22) is hinged to the seat plate (23).

2. The dot matrix handle of a thermal therapy instrument according to claim 1, characterized in that, A central frustum (42) is provided at the end of the electrode head (10). A pyramid (43) distributed in a ring shape is further provided at the end of the electrode head (10), and the pyramid (43) surrounds the outer circumference of the central frustum (42).

3. The dot matrix handle of a thermal therapy instrument according to claim 1, characterized in that, The dot matrix head further includes a support plate (12), which is detachably and fixedly connected to the lamp cover (2). A positioning sleeve (44) is provided on the support plate (12). The cylinder body (9) is inserted into the positioning sleeve (44) and fixedly connected to the positioning sleeve (44) by welding. The cylinder bodies (9) on the support plate (12) are arranged in a regular hexagon dot matrix. A plate body (13) is provided in the lamp cover (2), and a guiding hole (8) is provided on the plate body (13). The cylinder body (9) is inserted into the guiding hole (8).

4. The dot matrix handle of a thermal treatment instrument according to claim 1, characterized in that, A first pin shaft (27) is provided at the eccentric position of the eccentric wheel (24). A second pin shaft (28) is provided on the seat plate (23). Connecting sleeves (29) are respectively provided at both ends of the connecting rod (22). The connecting sleeve (29) at one end of the connecting rod (22) is sleeved on the first pin shaft (27) through a first bearing (30), and the connecting sleeve (29) at the other end of the connecting rod (22) is sleeved on the second pin shaft (28) through a second bearing (31).

5. The dot matrix handle of a thermal treatment instrument according to claim 1, characterized in that, It further includes a cable (32). The cable (32) is fixedly inserted into the handle housing (1) through a cable anti-bending head (45). A wire clip (33) is provided in the handle housing (1). The cable (32) is clamped on the wire clip (33). One end of the cable (32) is electrically connected to the circuit board (3), and an aviation plug (46) is provided at the other end of the cable (32).

6. The dot matrix handle of a thermal treatment instrument according to claim 1, characterized in that, It further includes a conductive elastic sheet (34). A groove (35) is provided on the inner side wall of the slot hole (41) of the sleeve (4). The conductive elastic sheet (34) is located in the groove (35) and fixedly connected to the sleeve (4). The conductive elastic sheet (34) is electrically connected to the circuit board (3), and the conductive elastic sheet (34) elastically presses against the cylinder body (9) inserted into the slot hole (41).

7. The dot matrix handle of a thermal therapy instrument according to claim 1, characterized in that, A male stop port (36) is provided on the handle housing (1), and a boss (37) is provided on the male stop port (36). A female stop port (38) is provided on the lamp cover (2), and a notch (39) is provided on the female stop port (38). The lamp cover (2) is snap-connected to the male stop port (36) of the handle housing (1) through the female stop port (38) and buckled on the outside of the boss (37) through the notch (39).

Images